Technical Lead specializing in Java & Spring Boot, delivering scalable web apps, aligning stakeholders, and ensuring high-quality, performant solution
Aktualisiert am 04.05.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 10.05.2026
Verfügbar zu: 100%
davon vor Ort: 10%
Java 21
Spring Boot
AI engineering
Spring Security
Spring Data
Hibernate
Kotlin
Microservices
REST API
Kafka
RabbitMQ
PostgreSQL
Oracle PL/SQL
Kubernetes
Docker
AWS
Azure DevOps
GitLab CI/CD
SAP Integration
Camunda BPM
Apache Spark
Snowflake
OpenTelemetry
English
fluent
Romanian
native

Einsatzorte

Einsatzorte

Iasi (+200km) Romania (+50km)
Available also for work on side till the trust is build.
möglich

Projekte

Projekte

4 months
2026-01 - now

Vision-based, Natural-Language E2E Testing

AI Developer Python Java Vision models ...
AI Developer
  • Designed and built a vision-based interaction layer so the agent acts on what it visually detects on screen - eliminating DOM-bound flakiness from hidden or detached elements that traditional Selenium-style tools suffer from, and producing far more predictable test execution.
  • Implemented a natural-language scenario runner that turns plain-English test cases into executable flows, making existing test cases reusable and letting non-technical users (QA, PMs, business) author new ones without writing code.
  • Integrated the agent into CI/CD pipelines with support for on-demand and scheduled overnight executions; shipped native GitLab CI/CD support and built an extensibility layer for Azure DevOps (the target stack at Biotronik) and other CI/CD tools.
  • Packaged the solution for on-premise deployment and integration with customers' existing toolchains, ensuring no sensitive data leaves the client environment.
  • Built low-level hooks that let the agent call internal endpoints and query databases directly, so test-data preparation stays fast and reliable when a pure UI path is too slow or brittle.
  • Developed an automatic failure-triage module that assesses failed runs, files bugs with full test tracing and pins each report to the exact step that broke, dramatically shortening time-to-root-cause.
  • Added multi-LLM provider support (OpenAI, Google Gemini, Anthropic Claude and others) through corporate accounts, preserving data privacy and compliance requirements.
  • Implemented a ?regeneration mode? that captures successful executions as references and replays them on subsequent runs, reducing reliance on LLM decisions, lowering cost and improving reliability.
  • Built an insight dashboard surfacing granular run-level metrics - API calls, token usage, cost per run, execution time, pass/fail trends - making it easy to spot regressions and tune spend. 
Python Java Vision models OpenAI / Anthropic / Gemini APIs LLM orchestration Playwright-like execution layer REST SQL GitLab CI/CD Azure DevOps Docker Kubernetes
Heaven Solutions | AI / Test Automation
5 years 1 month
2021-01 - 2026-01

Billing System - High-Volume Invoice Processing (?500M+/month)

Senior Software Developer & Technical Lead Java Spring Boot Spring Security ...
Senior Software Developer & Technical Lead
  • Enabled seamless processing of ?500M+ invoices per month with high availability and scalability across a microservices architecture of 50+ services.
  • Designed and implemented synchronization between the microservices platform and SAP, ensuring real-time data accuracy across SAP and PostgreSQL.
  • Introduced a shared Swagger-based interface repository across services, reducing API mismatches and accelerating cross-team integration.
  • Developed high-volume REST APIs for efficient and secure data processing, and moved heavy operations to async processing to protect system throughput.
  • Built a bidirectional SOAP interface to SAP that collapsed end-of-month load from millions of requests to hundreds.
  • Led cross-team feature delivery - partner contract changes, government discount schemes, train route cancellations - from specification to rollout.
  • Optimized database performance through partitioning, indexing and custom PL/pgSQL functions, improving query efficiency and overall scalability.
  • Owned five core services end-to-end, proactively identifying and resolving bottlenecks.
  • Partnered with business analysts to align technical solutions with business objectives and drive continuous improvement.
  • Implemented an alerting dashboard covering both technical faults and business anomalies, speeding up production triage. 
Java Spring Boot Spring Security Spring Data Angular ActiveMQ SAP integration PostgreSQL Kubernetes ArgoCD Grafana
Heaven Solutions | Rail Transportation Services
Iasi, Romania
1 year 1 month
2020-01 - 2021-01

Border Control System - National Security & Conference Access Control

Senior Software Developer Java Spring Boot Spring Security ...
Senior Software Developer
  • Delivered a critical solution for border authorities to assess passenger risk, strengthen national security and reduce airline penalties for denied entries.
  • Led end-to-end service development - from data ingestion to real-time risk profiling, integrating Interpol and other security databases.
  • Designed a microservices-based, asynchronous queue architecture for fast, scalable and resilient data processing.
  • Developed Neo4j-based concepts for graph-driven risk assessment.
  • Built the initial integration with airline companies pushing passenger data, and shared integration components for Interpol systems (including binding logic for each gray-list country).
  • Contributed to Angular UI features streaming real-time risk-profile entries.
  • Added OpenTelemetry support across all services, defined a custom audit-log stream and routed sensitive logs to a dedicated Loki instance via OTLP agent rules.
  • Ensured compliance with security standards and supported audit readiness and regulatory adherence.
  • Performed code reviews and architectural enhancements, improving modularity and maintainability.
  • Built Grafana dashboards for real-time insights and proactive issue resolution, and authored initial Portainer/Docker Swarm deployment scripts. 
Java Spring Boot Spring Security Spring Data Angular Camunda BPM PostgreSQL Neo4j RabbitMQ Docker Swarm OpenTelemetry Hibernate Elasticsearch Keycloak Azure DevOps Grafana
Heaven Solutions | Security & Identity Management
6 months
2019-10 - 2020-03

HR Management Platform

Software Developer Java Spring Boot Spring Data ...
Software Developer
  • Automated HR operations end-to-end, including auto-generation of 25+ hiring/firing documents and an integrated document management system per employee.
  • Built candidate pipelines with automated status emails, weekly goals, client requirements tracking and a customizable departmental performance dashboard.
  • Designed a fine-grained role-based access system with Spring Security and Hibernate.
  • Implemented asset assignment, timesheet tracking, custom client reports/invoices, and project forecasting to cover incoming workorders.
  • Integrated with S3 for per-user document storage and built an AI chatbot trained on internal data to speed up onboarding.
  • Added a statistics component to follow up on in-platform surveys.
  • Added a new functionality that allow hr department to manage the assets (generate QR codes for each new asset) and assign them to employees
  • Another teacher that i proposed and implemented was integrated annual feedbacks directly into the platform
  • Integrated document storage on amazon s3 or azure blob 
Java Spring Boot Spring Data Spring Security Tomcat Hibernate S3 ArgoCD GitLab SonarQube MariaDB ActiveMQ Linux Keycloak Okta Kubernetes Jira Agile
Heaven Solutions | Information Technology & Services
1 year 1 month
2019-01 - 2020-01

Data Platform - Pipelines for Business-Driven Decisions

Senior Software Developer Java 11 Spring Boot Spring Data ...
Senior Software Developer
  • Defined and built data pipelines across multiple sources (Jira, Chargebee, ITAM, Google) from ingestion to delivery, spanning cloud and lakehouse platforms.
  • Shaped the first normalization process - handling missing data, outliers and inconsistencies through validation and cleaning.
  • Designed robust data schemas to guarantee correct structure, formats and types across all consuming systems.
  • Orchestrated end-to-end pipelines with Apache Airflow and accelerated transformations with dbt.
  • Implemented monitoring, logging and alerting to track pipeline health and performance, and documented each pipeline for long-term maintainability.
Java 11 Spring Boot Spring Data Spring Security Spring Cloud Tomcat Hibernate Maven RabbitMQ Airflow Airbyte dbt Snowflake Apache Spark Apache Flink JUnit Mockito Swagger Docker Docker Compose Jira Confluence Postman Agile
Heaven Solutions | Information Technology & Services
1 year 1 month
2018-01 - 2019-01

Enterprise B2B Gaming Platform

Software Developer Java 11 Spring Boot Spring Data ...
Software Developer
  • Built scalable backend services for a configurable B2B gaming platform managing customer profiles, game catalogs and payout logic.
  • Optimized game-logic components, improving transaction-flow stability and performance.
  • Supported on-premises deployments and resolved client-side technical issues across multiple datacenters.
  • Led the migration from CrateDB to Cassandra and created v2 of the Apache Camel-based API gateway.
  • Streamlined the production release process based on recurring incident patterns.
  • Rebuilt tenant onboarding as a single form, eliminating repetitive and error-prone manual steps.
  • Improved logs and metrics gathering and introduced dashboards to drive data-informed decisions on game UX. 
Java 11 Spring Boot Spring Data Hibernate Actuator MongoDB Cassandra Apache Camel Jenkins Consul CrateDB
Heaven Solutions | Information Technology & Services
10 months
2017-06 - 2018-03

Medical Software - New Analysis & Reporting Features

Software Developer Java Eclipse Hibernate ...
Software Developer
  • Added a PDF-export feature for analysis results and extended the software's capacity for complex mathematical calculations.
  • Built advanced reporting, including PDFs with 3D models and custom restoration files.
  • Implemented widget-based export and time-based simulation export with configurable parameters.
  • Wrote unit tests to ensure consistent quality of delivered software.
Java Eclipse Hibernate LaTeX XML PDF JUnit Git Bitbucket Kanban Linux
Heaven Solutions | Medical Technology
11 months
2016-07 - 2017-05

File Classification & Threat Detection

Software Developer Java Eclipse Hibernate ...
Software Developer
  • Part of a team building new software to classify potentially malicious files, analyzing PE (Windows) and ELF (Linux) executable formats.
  • Contributed to the pipeline that tests, classifies and persists files - identifying viruses, adware, trojans, polymorphic threats and unknown entities at scale.
  • Implemented static-analysis modules for PE/ELF parsing (section headers, imports/exports, entropy checks and embedded signatures) that fed downstream classification rules.
  • Built storage and metadata indexing so the detection service could scale to millions of samples without losing throughput or traceability.
  • Added logging and telemetry around detection results, making it easier to triage misclassifications and iterate on detection rules.
  • Worked closely with threat-research engineers to translate newly discovered detection patterns into production code within tight release cycles.
  • Developed internal tooling to evaluate classification accuracy against known-good and known-bad datasets, helping reduce false positives.
  • Contributed to better process definition for the team's internal workflows - sharper sprint planning, clearer code-review expectations and tighter QA handoff. 
Java Eclipse Hibernate PE ELF Scrum Linux Jira Confluence Agile
Comodo | Security

Aus- und Weiterbildung

Aus- und Weiterbildung

2 years 1 month
2017-09 - 2019-09

Master's Degree

Master of Science in Information Security and Distributed Systems, Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering
Master of Science in Information Security and Distributed Systems
Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering
4 years 1 month
2013-09 - 2017-09

Bachelor's Degree

Bachelor of Computer Science, Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering
Bachelor of Computer Science
Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering

Position

Position

Senior Software Developer and Technical Lead with 10 years of experience delivering complex, high
throughput systems across billing, border security, medical technology, gaming and data platforms.
Comfortable owning a feature end-to-end - from architecture discussions with business analysts,
through implementation and code review, to production monitoring and tuning.
Currently also active as an AI Developer, building a vision-based test automation agent that turns
natural-language scenarios into reliable, self-healing end-to-end tests - running in CI/CD and on client
premises.
Recognized for strong analytical reasoning, pragmatic problem-solving and a calm, collaborative style
that works well in international, multi-team environments.

Kompetenzen

Kompetenzen

Top-Skills

Java 21 Spring Boot AI engineering Spring Security Spring Data Hibernate Kotlin Microservices REST API Kafka RabbitMQ PostgreSQL Oracle PL/SQL Kubernetes Docker AWS Azure DevOps GitLab CI/CD SAP Integration Camunda BPM Apache Spark Snowflake OpenTelemetry

Produkte / Standards / Erfahrungen / Methoden

Profile Summary

  • Senior Software Developer and Technical Lead with 10 years of experience delivering complex, high-throughput systems across billing, border security, medical technology, gaming and data platforms. Comfortable owning a feature end-to-end - from architecture discussions with business analysts, through implementation and code review, to production monitoring and tuning.
  • Currently also active as an AI Developer, building a vision-based test automation agent that turns natural-language scenarios into reliable, self-healing end-to-end tests - running in CI/CD and on client premises.
  • Recognized for strong analytical reasoning, pragmatic problem-solving and a calm, collaborative style that works well in international, multi-team environments. 


Highlights

?500M+ monthly throughput

Technical Lead on a rail-transport billing platform of 50+ microservices, integrated bidirectionally with SAP - cut end-of-month SAP load from millions of calls to a few hundred while keeping real-time accuracy across SAP and PostgreSQL. 


AI Test Automation Agent

Currently building a vision-based QA agent (for enterprise clients such as Biotronik): reads the screen, runs tests written in plain English, files bugs with full traces, and self-heals via a regeneration mode - deployable on-prem and provider-agnostic across OpenAI, Claude and Gemini. 


Mission-critical national security

Delivered a border-control risk-profiling service for a government authority, integrating Interpol databases and airline feeds in real time - reduced airline penalties for denied entries and met strict audit / compliance requirements. 


Enterprise data platform

Architected ingestion-to-delivery pipelines across Jira, Chargebee, ITAM and Google on Airflow, dbt, Snowflake, Spark and Flink - defined the first data normalization process and standard schemas powering business decisioning.


Core Competencies

Frameworks & Libraries

Spring Boot, Spring Security, Spring Data, Spring Cloud, Hibernate / JPA, Apache Camel, JWT, JMS, REST, Jackson, Apache POI, JUnit, Mockito, Cucumber, Behave (BDD / TDD) 


Data & Messaging

PostgreSQL, Oracle (PL/SQL), MySQL, MariaDB, MongoDB, Cassandra, Neo4j, Redis, Elasticsearch, H2, Liquibase, RabbitMQ, ActiveMQ, Kafka-style async patterns 


Data Engineering

Apache Spark, Apache Flink, Snowflake, dbt, Airflow, Airbyte


DevOps & Cloud

Docker, Kubernetes, AWS, Azure DevOps, GitLab CI/CD, Jenkins, TeamCity, ArgoCD, Artifactory, Consul, Keycloak, Okta, OpenTelemetry, Grafana, Linux, Networking 


Architecture & Practices

Microservices, Event-driven, REST/SOAP, Camunda BPM, XML/XSLT/XSD, CI/CD, Agile / Scrum / Kanban


AI & Automation

LLM integrations (OpenAI, Anthropic Claude, Google Gemini), Vision-based UI automation, AI test agents, Prompt engineering, RAG patterns 

Programmiersprachen

Java
8 ? 21
Kotlin
SQL
PL/SQL
TypeScript
Python

Branchen

Branchen

  • Information Technology & Services
  • Rail Transportation & Logistics
  • Medical Technology
  • Security & Identity Management
  • Gaming

Einsatzorte

Einsatzorte

Iasi (+200km) Romania (+50km)
Available also for work on side till the trust is build.
möglich

Projekte

Projekte

4 months
2026-01 - now

Vision-based, Natural-Language E2E Testing

AI Developer Python Java Vision models ...
AI Developer
  • Designed and built a vision-based interaction layer so the agent acts on what it visually detects on screen - eliminating DOM-bound flakiness from hidden or detached elements that traditional Selenium-style tools suffer from, and producing far more predictable test execution.
  • Implemented a natural-language scenario runner that turns plain-English test cases into executable flows, making existing test cases reusable and letting non-technical users (QA, PMs, business) author new ones without writing code.
  • Integrated the agent into CI/CD pipelines with support for on-demand and scheduled overnight executions; shipped native GitLab CI/CD support and built an extensibility layer for Azure DevOps (the target stack at Biotronik) and other CI/CD tools.
  • Packaged the solution for on-premise deployment and integration with customers' existing toolchains, ensuring no sensitive data leaves the client environment.
  • Built low-level hooks that let the agent call internal endpoints and query databases directly, so test-data preparation stays fast and reliable when a pure UI path is too slow or brittle.
  • Developed an automatic failure-triage module that assesses failed runs, files bugs with full test tracing and pins each report to the exact step that broke, dramatically shortening time-to-root-cause.
  • Added multi-LLM provider support (OpenAI, Google Gemini, Anthropic Claude and others) through corporate accounts, preserving data privacy and compliance requirements.
  • Implemented a ?regeneration mode? that captures successful executions as references and replays them on subsequent runs, reducing reliance on LLM decisions, lowering cost and improving reliability.
  • Built an insight dashboard surfacing granular run-level metrics - API calls, token usage, cost per run, execution time, pass/fail trends - making it easy to spot regressions and tune spend. 
Python Java Vision models OpenAI / Anthropic / Gemini APIs LLM orchestration Playwright-like execution layer REST SQL GitLab CI/CD Azure DevOps Docker Kubernetes
Heaven Solutions | AI / Test Automation
5 years 1 month
2021-01 - 2026-01

Billing System - High-Volume Invoice Processing (?500M+/month)

Senior Software Developer & Technical Lead Java Spring Boot Spring Security ...
Senior Software Developer & Technical Lead
  • Enabled seamless processing of ?500M+ invoices per month with high availability and scalability across a microservices architecture of 50+ services.
  • Designed and implemented synchronization between the microservices platform and SAP, ensuring real-time data accuracy across SAP and PostgreSQL.
  • Introduced a shared Swagger-based interface repository across services, reducing API mismatches and accelerating cross-team integration.
  • Developed high-volume REST APIs for efficient and secure data processing, and moved heavy operations to async processing to protect system throughput.
  • Built a bidirectional SOAP interface to SAP that collapsed end-of-month load from millions of requests to hundreds.
  • Led cross-team feature delivery - partner contract changes, government discount schemes, train route cancellations - from specification to rollout.
  • Optimized database performance through partitioning, indexing and custom PL/pgSQL functions, improving query efficiency and overall scalability.
  • Owned five core services end-to-end, proactively identifying and resolving bottlenecks.
  • Partnered with business analysts to align technical solutions with business objectives and drive continuous improvement.
  • Implemented an alerting dashboard covering both technical faults and business anomalies, speeding up production triage. 
Java Spring Boot Spring Security Spring Data Angular ActiveMQ SAP integration PostgreSQL Kubernetes ArgoCD Grafana
Heaven Solutions | Rail Transportation Services
Iasi, Romania
1 year 1 month
2020-01 - 2021-01

Border Control System - National Security & Conference Access Control

Senior Software Developer Java Spring Boot Spring Security ...
Senior Software Developer
  • Delivered a critical solution for border authorities to assess passenger risk, strengthen national security and reduce airline penalties for denied entries.
  • Led end-to-end service development - from data ingestion to real-time risk profiling, integrating Interpol and other security databases.
  • Designed a microservices-based, asynchronous queue architecture for fast, scalable and resilient data processing.
  • Developed Neo4j-based concepts for graph-driven risk assessment.
  • Built the initial integration with airline companies pushing passenger data, and shared integration components for Interpol systems (including binding logic for each gray-list country).
  • Contributed to Angular UI features streaming real-time risk-profile entries.
  • Added OpenTelemetry support across all services, defined a custom audit-log stream and routed sensitive logs to a dedicated Loki instance via OTLP agent rules.
  • Ensured compliance with security standards and supported audit readiness and regulatory adherence.
  • Performed code reviews and architectural enhancements, improving modularity and maintainability.
  • Built Grafana dashboards for real-time insights and proactive issue resolution, and authored initial Portainer/Docker Swarm deployment scripts. 
Java Spring Boot Spring Security Spring Data Angular Camunda BPM PostgreSQL Neo4j RabbitMQ Docker Swarm OpenTelemetry Hibernate Elasticsearch Keycloak Azure DevOps Grafana
Heaven Solutions | Security & Identity Management
6 months
2019-10 - 2020-03

HR Management Platform

Software Developer Java Spring Boot Spring Data ...
Software Developer
  • Automated HR operations end-to-end, including auto-generation of 25+ hiring/firing documents and an integrated document management system per employee.
  • Built candidate pipelines with automated status emails, weekly goals, client requirements tracking and a customizable departmental performance dashboard.
  • Designed a fine-grained role-based access system with Spring Security and Hibernate.
  • Implemented asset assignment, timesheet tracking, custom client reports/invoices, and project forecasting to cover incoming workorders.
  • Integrated with S3 for per-user document storage and built an AI chatbot trained on internal data to speed up onboarding.
  • Added a statistics component to follow up on in-platform surveys.
  • Added a new functionality that allow hr department to manage the assets (generate QR codes for each new asset) and assign them to employees
  • Another teacher that i proposed and implemented was integrated annual feedbacks directly into the platform
  • Integrated document storage on amazon s3 or azure blob 
Java Spring Boot Spring Data Spring Security Tomcat Hibernate S3 ArgoCD GitLab SonarQube MariaDB ActiveMQ Linux Keycloak Okta Kubernetes Jira Agile
Heaven Solutions | Information Technology & Services
1 year 1 month
2019-01 - 2020-01

Data Platform - Pipelines for Business-Driven Decisions

Senior Software Developer Java 11 Spring Boot Spring Data ...
Senior Software Developer
  • Defined and built data pipelines across multiple sources (Jira, Chargebee, ITAM, Google) from ingestion to delivery, spanning cloud and lakehouse platforms.
  • Shaped the first normalization process - handling missing data, outliers and inconsistencies through validation and cleaning.
  • Designed robust data schemas to guarantee correct structure, formats and types across all consuming systems.
  • Orchestrated end-to-end pipelines with Apache Airflow and accelerated transformations with dbt.
  • Implemented monitoring, logging and alerting to track pipeline health and performance, and documented each pipeline for long-term maintainability.
Java 11 Spring Boot Spring Data Spring Security Spring Cloud Tomcat Hibernate Maven RabbitMQ Airflow Airbyte dbt Snowflake Apache Spark Apache Flink JUnit Mockito Swagger Docker Docker Compose Jira Confluence Postman Agile
Heaven Solutions | Information Technology & Services
1 year 1 month
2018-01 - 2019-01

Enterprise B2B Gaming Platform

Software Developer Java 11 Spring Boot Spring Data ...
Software Developer
  • Built scalable backend services for a configurable B2B gaming platform managing customer profiles, game catalogs and payout logic.
  • Optimized game-logic components, improving transaction-flow stability and performance.
  • Supported on-premises deployments and resolved client-side technical issues across multiple datacenters.
  • Led the migration from CrateDB to Cassandra and created v2 of the Apache Camel-based API gateway.
  • Streamlined the production release process based on recurring incident patterns.
  • Rebuilt tenant onboarding as a single form, eliminating repetitive and error-prone manual steps.
  • Improved logs and metrics gathering and introduced dashboards to drive data-informed decisions on game UX. 
Java 11 Spring Boot Spring Data Hibernate Actuator MongoDB Cassandra Apache Camel Jenkins Consul CrateDB
Heaven Solutions | Information Technology & Services
10 months
2017-06 - 2018-03

Medical Software - New Analysis & Reporting Features

Software Developer Java Eclipse Hibernate ...
Software Developer
  • Added a PDF-export feature for analysis results and extended the software's capacity for complex mathematical calculations.
  • Built advanced reporting, including PDFs with 3D models and custom restoration files.
  • Implemented widget-based export and time-based simulation export with configurable parameters.
  • Wrote unit tests to ensure consistent quality of delivered software.
Java Eclipse Hibernate LaTeX XML PDF JUnit Git Bitbucket Kanban Linux
Heaven Solutions | Medical Technology
11 months
2016-07 - 2017-05

File Classification & Threat Detection

Software Developer Java Eclipse Hibernate ...
Software Developer
  • Part of a team building new software to classify potentially malicious files, analyzing PE (Windows) and ELF (Linux) executable formats.
  • Contributed to the pipeline that tests, classifies and persists files - identifying viruses, adware, trojans, polymorphic threats and unknown entities at scale.
  • Implemented static-analysis modules for PE/ELF parsing (section headers, imports/exports, entropy checks and embedded signatures) that fed downstream classification rules.
  • Built storage and metadata indexing so the detection service could scale to millions of samples without losing throughput or traceability.
  • Added logging and telemetry around detection results, making it easier to triage misclassifications and iterate on detection rules.
  • Worked closely with threat-research engineers to translate newly discovered detection patterns into production code within tight release cycles.
  • Developed internal tooling to evaluate classification accuracy against known-good and known-bad datasets, helping reduce false positives.
  • Contributed to better process definition for the team's internal workflows - sharper sprint planning, clearer code-review expectations and tighter QA handoff. 
Java Eclipse Hibernate PE ELF Scrum Linux Jira Confluence Agile
Comodo | Security

Aus- und Weiterbildung

Aus- und Weiterbildung

2 years 1 month
2017-09 - 2019-09

Master's Degree

Master of Science in Information Security and Distributed Systems, Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering
Master of Science in Information Security and Distributed Systems
Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering
4 years 1 month
2013-09 - 2017-09

Bachelor's Degree

Bachelor of Computer Science, Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering
Bachelor of Computer Science
Technical University "Gheorghe Asachi" of Ia?i, Faculty of Automatic Control and Computer Engineering

Position

Position

Senior Software Developer and Technical Lead with 10 years of experience delivering complex, high
throughput systems across billing, border security, medical technology, gaming and data platforms.
Comfortable owning a feature end-to-end - from architecture discussions with business analysts,
through implementation and code review, to production monitoring and tuning.
Currently also active as an AI Developer, building a vision-based test automation agent that turns
natural-language scenarios into reliable, self-healing end-to-end tests - running in CI/CD and on client
premises.
Recognized for strong analytical reasoning, pragmatic problem-solving and a calm, collaborative style
that works well in international, multi-team environments.

Kompetenzen

Kompetenzen

Top-Skills

Java 21 Spring Boot AI engineering Spring Security Spring Data Hibernate Kotlin Microservices REST API Kafka RabbitMQ PostgreSQL Oracle PL/SQL Kubernetes Docker AWS Azure DevOps GitLab CI/CD SAP Integration Camunda BPM Apache Spark Snowflake OpenTelemetry

Produkte / Standards / Erfahrungen / Methoden

Profile Summary

  • Senior Software Developer and Technical Lead with 10 years of experience delivering complex, high-throughput systems across billing, border security, medical technology, gaming and data platforms. Comfortable owning a feature end-to-end - from architecture discussions with business analysts, through implementation and code review, to production monitoring and tuning.
  • Currently also active as an AI Developer, building a vision-based test automation agent that turns natural-language scenarios into reliable, self-healing end-to-end tests - running in CI/CD and on client premises.
  • Recognized for strong analytical reasoning, pragmatic problem-solving and a calm, collaborative style that works well in international, multi-team environments. 


Highlights

?500M+ monthly throughput

Technical Lead on a rail-transport billing platform of 50+ microservices, integrated bidirectionally with SAP - cut end-of-month SAP load from millions of calls to a few hundred while keeping real-time accuracy across SAP and PostgreSQL. 


AI Test Automation Agent

Currently building a vision-based QA agent (for enterprise clients such as Biotronik): reads the screen, runs tests written in plain English, files bugs with full traces, and self-heals via a regeneration mode - deployable on-prem and provider-agnostic across OpenAI, Claude and Gemini. 


Mission-critical national security

Delivered a border-control risk-profiling service for a government authority, integrating Interpol databases and airline feeds in real time - reduced airline penalties for denied entries and met strict audit / compliance requirements. 


Enterprise data platform

Architected ingestion-to-delivery pipelines across Jira, Chargebee, ITAM and Google on Airflow, dbt, Snowflake, Spark and Flink - defined the first data normalization process and standard schemas powering business decisioning.


Core Competencies

Frameworks & Libraries

Spring Boot, Spring Security, Spring Data, Spring Cloud, Hibernate / JPA, Apache Camel, JWT, JMS, REST, Jackson, Apache POI, JUnit, Mockito, Cucumber, Behave (BDD / TDD) 


Data & Messaging

PostgreSQL, Oracle (PL/SQL), MySQL, MariaDB, MongoDB, Cassandra, Neo4j, Redis, Elasticsearch, H2, Liquibase, RabbitMQ, ActiveMQ, Kafka-style async patterns 


Data Engineering

Apache Spark, Apache Flink, Snowflake, dbt, Airflow, Airbyte


DevOps & Cloud

Docker, Kubernetes, AWS, Azure DevOps, GitLab CI/CD, Jenkins, TeamCity, ArgoCD, Artifactory, Consul, Keycloak, Okta, OpenTelemetry, Grafana, Linux, Networking 


Architecture & Practices

Microservices, Event-driven, REST/SOAP, Camunda BPM, XML/XSLT/XSD, CI/CD, Agile / Scrum / Kanban


AI & Automation

LLM integrations (OpenAI, Anthropic Claude, Google Gemini), Vision-based UI automation, AI test agents, Prompt engineering, RAG patterns 

Programmiersprachen

Java
8 ? 21
Kotlin
SQL
PL/SQL
TypeScript
Python

Branchen

Branchen

  • Information Technology & Services
  • Rail Transportation & Logistics
  • Medical Technology
  • Security & Identity Management
  • Gaming

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

Das Freelancer-Portal

Direktester geht's nicht! Ganz einfach Freelancer finden und direkt Kontakt aufnehmen.