Fullstack Development & DevOps (Java, Java SE/EE, JS, TS, SpringBoot, Node.js, React, Docker, Kubernetes, Jenkins, Maven, Azure, AWS, SQL, PostgreSQL)
Aktualisiert am 28.04.2026
Profil
Mitarbeiter eines Dienstleisters
Remote-Arbeit
Verfügbar ab: 01.05.2026
Verfügbar zu: 100%
davon vor Ort: 30%
Skill-Profil eines fest angestellten Mitarbeiters des Dienstleisters
German
Verhandlungssicher
English
Verhandlungssicher
Czech
Fortgeschritten
Polish
Muttersprache

Einsatzorte

Einsatzorte

Deutschland
möglich

Projekte

Projekte

11 months
2024-10 - 2025-08

Cloud Architecture and ELK Platform Optimization for Logistics Systems

Software Architect Java 21 JUnit Spring Boot 3 ...
Software Architect
- Designed and optimized new and more efficient architecture and technical solutions for the package routing system 
- Designed architecture of the cloud based solutions for the Proof of Delivery document storage 
- Architected and scaled a centralized logging platform using the ELK stack to process 10TB+ of daily logs from microservices, improving query performance by half through index lifecycle management and hot-warm-cold architecture
Java 21 JUnit Spring Boot 3 Swagger / OpenAPI Kafka Kafka UI AWS EC2 AWS S3 AWS CloudFormation AWS CloudWatch AWS Lambda Kubernetes Jenkins Elasticsearch 8.x Logstash Kibana Beats
GLS
9 months
2024-01 - 2024-09

Microservices Enhancement for Social Impact Platform

Lead Software Engineer Java 21 Spring Boot 3 Spring Cloud ...
Lead Software Engineer
- Developed new features and lead the team for the non-profit migrant and
low- income household supporting application
- Adjusted and extended processes and functions
- Maintained and improved the existing microservices
Java 21 Spring Boot 3 Spring Cloud Spring Security Swagger / OpenAPI JUnit AWS EC2 AWS S3 AWS CloudFormation AWS CloudWatch AWS RDS Kubernetes Jenkins Ansible Keycloak 17 RabbitMQ Git GitHub Copilot RESTful Services & APIs Microservices Architecture JSON XML Docker Maven Atlassian JIRA XRAY for Jira Zephyr for Jira
KNAPPSCHAFT
10 months
2023-03 - 2023-12

Authentication and 2FA Enhancement for Sales Application

Senior Software Engineer Java 17 Spring Boot Spring Cloud ...
Senior Software Engineer
- Worked on a sales authentication/authorization system with DevOps support
- Adjusted and extended the security mechanisms and 2FA codebase
- Maintained and improved the existing microservices
Java 17 Spring Boot Spring Cloud JUnit Groovy Spock OpenAPI WildFly Flyway Kubernetes OAuth2 Keycloak OWASP Top 10 RESTful Services & APIs Git Jenkins Docker Microservices Architecture JSON XML Maven
ORANGE POLAND
10 months
2022-06 - 2023-03

Remote Fueling Platform Development with Multinational Team Coordination

Senior Software Engineer Java 17 Kotlin Spring Boot ...
Senior Software Engineer
- Developed new features for the remote fueling application
- Adjusted and extended pipelines and functions
- Collaboratively maintained and improved the NodeJS-based microservices
- Had close and strong cooperation with diverse multinational teams and
overcame outsourcing challenges such as complex bug fixing and missing
documentation within available business capabilities
Java 17 Kotlin Spring Boot Spring WebFlux Spring Cloud Sleuth OpenFeign JUnit Groovy Spock Swagger / OpenAPI Azure Kubernetes Service Azure DevOps Azure Functions Azure Event Grid Azure Event Hubs Azure Cosmos DB NodeJS 16 TypeScript HapiJS Git GitHub Copilot RESTful Services & APIs Microservices Architecture Docker JSON XML Maven
CIRCLE K
1 year
2021-07 - 2022-06

Machine Learning Integration and Microservices Optimization for Core Product

Senior Software Engineer Java 8 Groovy Scala ...
Senior Software Engineer
- Used and improved Machine Learning algorithms for the core product
- Developed Proof of Concepts and worked with multiple teams on advanced
domain systems implementation, including the security team and
vulnerabilities heuristics
- Decoupled microservices to promote good separation of concerns in order to
meet client expectations
- Service deployment and orchestration
Java 8 Groovy Scala Spring Boot Microservices Feign Camunda BPM JBoss Drools RabbitMQ Docker Kubernetes KubeFlow Apache Zookeeper Apache Mesos HashiCorp Vault Marathon HAProxy Elastic Search Kibana Grafana Keycloak JSON XML Machine Learning / ML LLM RESTful Services & APIs Git GitHub Copilot
WORKFUSION
1 year 2 months
2020-05 - 2021-06

Embedded Systems and IoT Development for Smart Home Entertainment

Senior Software Engineer Java 7 ReactJS Google Web Toolkit / GWT ...
Senior Software Engineer
- Coded new features of and tuning the firmware / middleware on
embedded systems
- Involved in IoT / Internet of Things development of smart home
entertainment solutions
- Motivated help for juniors to grow based on trust and reputation and
preparing high-level internal training
- Conducted performance analysis and performance tuning in the
production environment
Java 7 ReactJS Google Web Toolkit / GWT Apache Kafka Apache Zookeeper MongoDB Spring WebFlux IntelliJ IDEA Git GitHub Copilot RESTful Services & APIs JSON XML Microservices Architecture
ORANGE POLAND
5 months
2019-12 - 2020-04

Credit Risk Management Platform Development and Performance Optimization

Senior Software Engineer Java 7 Java EE EJB ...
Senior Software Engineer
- Developed new features of and tuning the credit risk management
financial products running on low latency Linux systems
- Involved in building and debugging the features with focus on the analytics
and project management side according to the industry regulations and
business requirements / standards compliance
- Communicated and proactively followed up on the solutions, maintaining
partnerships with the management / customer representatives from the
finance sector
- Conducted performance analysis and performance tuning
- Wrote and updated technical documentation for improved customer experience
- Participated in the digital transformation innovation of the company.
- Remote work experience in a dynamic environment.
Java 7 Java EE EJB JMS JDBC JSP Servlets RMI SOA Spring 4 JavaScript CSS ExtJS Atlassian JIRA Apache Ant SVN SQL RESTful Services & APIs IntelliJ IDEA Git Docker JSON XML
E.STRADIS GMBH
5 months
2019-08 - 2019-12

Big Data Scheduling and Performance Reporting Solutions for Global Enterprises

Senior Software Engineer Java 8 JDBC Apache Tomcat ...
Senior Software Engineer
- Programmed a Big Data driven scheduling application loading data into a global
application designed to support the sales process using cloud architectures /
cloud computing / distributed computing and relational databases / data
warehouse
- Delivered together with external vendors a high-quality customers performance
reporting application analyzing and reporting operational logistics performance
from a global to facility level including the target transit time
- Worked on a highly scalable enterprise software generating daily / weekly call
plans
Java 8 JDBC Apache Tomcat Spring Boot Oracle 12g Ehcache HikariCP Teradata Vantage MyBatis SQL Loader AWS S3 AWS SDK Red Hat Enterprise Linux 7 RESTful Services & APIs JSON XML Maven Git
DHL INTERNATIONAL GMBH
5 months
2019-04 - 2019-08

Mainframe Product Innovation and Front-End Modernization with CI/CD

Software Engineer Java 8 Lombok Mockito ...
Software Engineer
- Conducted innovative research and development of the new mainframe
products and their APIs
- Developed a modern Cucumber End To End integration testing suite
- Effectively creating a Jenkins Continuous Integration build pipeline including
front- end validation
- Made impact on the technical debt and major deficiencies in the Reactfront end,
enabling the project delivery and for the product to enter the MVP lifecycle
phase
- Led the front-end development and mentored / trained the junior team
members, including code reviews and technical knowledge / technical skills
transfer.
Java 8 Lombok Mockito Spring Boot SLF4J JUnit Jacoco Jersey Guava Apache Velocity Apache Commons SonarQube Endevor IBM z/OS Git Cucumber JVM Selenium Robot Framework Playwright eslint React RESTful Services & APIs JSON XML GitHub Copilot Jenkins Atlassian JIRA XRAY for Jira Zephyr for Jira
BROADCOM INC.
1 year 1 month
2018-04 - 2019-04

AI-Enhanced Bidding Platform and Financial Systems Optimization

Software Engineer Java 11 Maven Spring MVC ...
Software Engineer
- Developed a collaborative bidding platform
- Developed a competitive and user-supporting system with Artificial
Intelligence capabilities
- Used Machine Learning algorithms and data structures / design patterns,
e.g., Strategy pattern, according to proactive business analysis
- Improved the existing system according to Clean Code best practices and
technical requirements / performance requirements
- Extended and troubleshoot the root cause of the problems of the existing web
services used by mobile applications
- Developed an automation script for parsing and collaborating with banking
clients for data migration reasons using flexible banking-specific frameworks.
- Familiarity with financial engineering and trading systems through
consulting services.
Java 11 Maven Spring MVC JUnit Mockito Hibernate / JPA PostgreSQL Angular 7 Protractor Playwright NG-ZORRO Node.js Red Hat Enterprise Linux 7 Microsoft Azure Python 2.7 Murex MX.3 OpenHFT FIX Git RESTful Services & APIs JSON XML Machine Learning / ML LLM GitHub Copilot
AMARIS CONSULTING

Aus- und Weiterbildung

Aus- und Weiterbildung

1 year 1 month
2021-09 - 2022-09

IT Project Management, Postgraduate Studies

Warsaw School Of Computer science
Warsaw School Of Computer science
3 years 10 months
2014-09 - 2018-06

Computer Science, Bachelor of science

Warsaw School Of Computer science
Warsaw School Of Computer science

Position

Position

Experienced Senior Software Engineer and Technical Lead with over 8 years of expertise in backend development,
cloud infrastructure, and microservices architecture. Proficient in Java (7?21), Spring ecosystem, and cloud platforms
like AWS and Azure, with hands-on DevOps practices using Kubernetes, Jenkins, and Docker. Proven track record in
delivering scalable, secure, and high-performance systems across telecom, finance, and enterprise sectors. Strong
collaborator with cross-functional teams, mentoring experience, and a passion for clean code and automation.

Kompetenzen

Kompetenzen

Schwerpunkte

Java
Experte
Java SE/EE
Experte
JavaScript
Experte
TypeScript
Experte
Spring Boot
Experte
Node.Js
Experte
React
Experte
Docker
Experte
Kubernetes
Experte
Jenkins
Experte
Git
Experte
GitLab
Experte
AWS
Experte
Azure
Experte
SQL
Experte
PostgreSQL
Experte
Postman / Soap UI
Experte
Kotlin
Fortgeschritten
Python
Fortgeschritten
.NET
Fortgeschritten
GCP
Fortgeschritten
Cucumber
Fortgeschritten
Playwright
Fortgeschritten
Selenium
Fortgeschritten
Grafana
Fortgeschritten

Branchen

Branchen

Telecom, finance, and enterprise sectors.

Einsatzorte

Einsatzorte

Deutschland
möglich

Projekte

Projekte

11 months
2024-10 - 2025-08

Cloud Architecture and ELK Platform Optimization for Logistics Systems

Software Architect Java 21 JUnit Spring Boot 3 ...
Software Architect
- Designed and optimized new and more efficient architecture and technical solutions for the package routing system 
- Designed architecture of the cloud based solutions for the Proof of Delivery document storage 
- Architected and scaled a centralized logging platform using the ELK stack to process 10TB+ of daily logs from microservices, improving query performance by half through index lifecycle management and hot-warm-cold architecture
Java 21 JUnit Spring Boot 3 Swagger / OpenAPI Kafka Kafka UI AWS EC2 AWS S3 AWS CloudFormation AWS CloudWatch AWS Lambda Kubernetes Jenkins Elasticsearch 8.x Logstash Kibana Beats
GLS
9 months
2024-01 - 2024-09

Microservices Enhancement for Social Impact Platform

Lead Software Engineer Java 21 Spring Boot 3 Spring Cloud ...
Lead Software Engineer
- Developed new features and lead the team for the non-profit migrant and
low- income household supporting application
- Adjusted and extended processes and functions
- Maintained and improved the existing microservices
Java 21 Spring Boot 3 Spring Cloud Spring Security Swagger / OpenAPI JUnit AWS EC2 AWS S3 AWS CloudFormation AWS CloudWatch AWS RDS Kubernetes Jenkins Ansible Keycloak 17 RabbitMQ Git GitHub Copilot RESTful Services & APIs Microservices Architecture JSON XML Docker Maven Atlassian JIRA XRAY for Jira Zephyr for Jira
KNAPPSCHAFT
10 months
2023-03 - 2023-12

Authentication and 2FA Enhancement for Sales Application

Senior Software Engineer Java 17 Spring Boot Spring Cloud ...
Senior Software Engineer
- Worked on a sales authentication/authorization system with DevOps support
- Adjusted and extended the security mechanisms and 2FA codebase
- Maintained and improved the existing microservices
Java 17 Spring Boot Spring Cloud JUnit Groovy Spock OpenAPI WildFly Flyway Kubernetes OAuth2 Keycloak OWASP Top 10 RESTful Services & APIs Git Jenkins Docker Microservices Architecture JSON XML Maven
ORANGE POLAND
10 months
2022-06 - 2023-03

Remote Fueling Platform Development with Multinational Team Coordination

Senior Software Engineer Java 17 Kotlin Spring Boot ...
Senior Software Engineer
- Developed new features for the remote fueling application
- Adjusted and extended pipelines and functions
- Collaboratively maintained and improved the NodeJS-based microservices
- Had close and strong cooperation with diverse multinational teams and
overcame outsourcing challenges such as complex bug fixing and missing
documentation within available business capabilities
Java 17 Kotlin Spring Boot Spring WebFlux Spring Cloud Sleuth OpenFeign JUnit Groovy Spock Swagger / OpenAPI Azure Kubernetes Service Azure DevOps Azure Functions Azure Event Grid Azure Event Hubs Azure Cosmos DB NodeJS 16 TypeScript HapiJS Git GitHub Copilot RESTful Services & APIs Microservices Architecture Docker JSON XML Maven
CIRCLE K
1 year
2021-07 - 2022-06

Machine Learning Integration and Microservices Optimization for Core Product

Senior Software Engineer Java 8 Groovy Scala ...
Senior Software Engineer
- Used and improved Machine Learning algorithms for the core product
- Developed Proof of Concepts and worked with multiple teams on advanced
domain systems implementation, including the security team and
vulnerabilities heuristics
- Decoupled microservices to promote good separation of concerns in order to
meet client expectations
- Service deployment and orchestration
Java 8 Groovy Scala Spring Boot Microservices Feign Camunda BPM JBoss Drools RabbitMQ Docker Kubernetes KubeFlow Apache Zookeeper Apache Mesos HashiCorp Vault Marathon HAProxy Elastic Search Kibana Grafana Keycloak JSON XML Machine Learning / ML LLM RESTful Services & APIs Git GitHub Copilot
WORKFUSION
1 year 2 months
2020-05 - 2021-06

Embedded Systems and IoT Development for Smart Home Entertainment

Senior Software Engineer Java 7 ReactJS Google Web Toolkit / GWT ...
Senior Software Engineer
- Coded new features of and tuning the firmware / middleware on
embedded systems
- Involved in IoT / Internet of Things development of smart home
entertainment solutions
- Motivated help for juniors to grow based on trust and reputation and
preparing high-level internal training
- Conducted performance analysis and performance tuning in the
production environment
Java 7 ReactJS Google Web Toolkit / GWT Apache Kafka Apache Zookeeper MongoDB Spring WebFlux IntelliJ IDEA Git GitHub Copilot RESTful Services & APIs JSON XML Microservices Architecture
ORANGE POLAND
5 months
2019-12 - 2020-04

Credit Risk Management Platform Development and Performance Optimization

Senior Software Engineer Java 7 Java EE EJB ...
Senior Software Engineer
- Developed new features of and tuning the credit risk management
financial products running on low latency Linux systems
- Involved in building and debugging the features with focus on the analytics
and project management side according to the industry regulations and
business requirements / standards compliance
- Communicated and proactively followed up on the solutions, maintaining
partnerships with the management / customer representatives from the
finance sector
- Conducted performance analysis and performance tuning
- Wrote and updated technical documentation for improved customer experience
- Participated in the digital transformation innovation of the company.
- Remote work experience in a dynamic environment.
Java 7 Java EE EJB JMS JDBC JSP Servlets RMI SOA Spring 4 JavaScript CSS ExtJS Atlassian JIRA Apache Ant SVN SQL RESTful Services & APIs IntelliJ IDEA Git Docker JSON XML
E.STRADIS GMBH
5 months
2019-08 - 2019-12

Big Data Scheduling and Performance Reporting Solutions for Global Enterprises

Senior Software Engineer Java 8 JDBC Apache Tomcat ...
Senior Software Engineer
- Programmed a Big Data driven scheduling application loading data into a global
application designed to support the sales process using cloud architectures /
cloud computing / distributed computing and relational databases / data
warehouse
- Delivered together with external vendors a high-quality customers performance
reporting application analyzing and reporting operational logistics performance
from a global to facility level including the target transit time
- Worked on a highly scalable enterprise software generating daily / weekly call
plans
Java 8 JDBC Apache Tomcat Spring Boot Oracle 12g Ehcache HikariCP Teradata Vantage MyBatis SQL Loader AWS S3 AWS SDK Red Hat Enterprise Linux 7 RESTful Services & APIs JSON XML Maven Git
DHL INTERNATIONAL GMBH
5 months
2019-04 - 2019-08

Mainframe Product Innovation and Front-End Modernization with CI/CD

Software Engineer Java 8 Lombok Mockito ...
Software Engineer
- Conducted innovative research and development of the new mainframe
products and their APIs
- Developed a modern Cucumber End To End integration testing suite
- Effectively creating a Jenkins Continuous Integration build pipeline including
front- end validation
- Made impact on the technical debt and major deficiencies in the Reactfront end,
enabling the project delivery and for the product to enter the MVP lifecycle
phase
- Led the front-end development and mentored / trained the junior team
members, including code reviews and technical knowledge / technical skills
transfer.
Java 8 Lombok Mockito Spring Boot SLF4J JUnit Jacoco Jersey Guava Apache Velocity Apache Commons SonarQube Endevor IBM z/OS Git Cucumber JVM Selenium Robot Framework Playwright eslint React RESTful Services & APIs JSON XML GitHub Copilot Jenkins Atlassian JIRA XRAY for Jira Zephyr for Jira
BROADCOM INC.
1 year 1 month
2018-04 - 2019-04

AI-Enhanced Bidding Platform and Financial Systems Optimization

Software Engineer Java 11 Maven Spring MVC ...
Software Engineer
- Developed a collaborative bidding platform
- Developed a competitive and user-supporting system with Artificial
Intelligence capabilities
- Used Machine Learning algorithms and data structures / design patterns,
e.g., Strategy pattern, according to proactive business analysis
- Improved the existing system according to Clean Code best practices and
technical requirements / performance requirements
- Extended and troubleshoot the root cause of the problems of the existing web
services used by mobile applications
- Developed an automation script for parsing and collaborating with banking
clients for data migration reasons using flexible banking-specific frameworks.
- Familiarity with financial engineering and trading systems through
consulting services.
Java 11 Maven Spring MVC JUnit Mockito Hibernate / JPA PostgreSQL Angular 7 Protractor Playwright NG-ZORRO Node.js Red Hat Enterprise Linux 7 Microsoft Azure Python 2.7 Murex MX.3 OpenHFT FIX Git RESTful Services & APIs JSON XML Machine Learning / ML LLM GitHub Copilot
AMARIS CONSULTING

Aus- und Weiterbildung

Aus- und Weiterbildung

1 year 1 month
2021-09 - 2022-09

IT Project Management, Postgraduate Studies

Warsaw School Of Computer science
Warsaw School Of Computer science
3 years 10 months
2014-09 - 2018-06

Computer Science, Bachelor of science

Warsaw School Of Computer science
Warsaw School Of Computer science

Position

Position

Experienced Senior Software Engineer and Technical Lead with over 8 years of expertise in backend development,
cloud infrastructure, and microservices architecture. Proficient in Java (7?21), Spring ecosystem, and cloud platforms
like AWS and Azure, with hands-on DevOps practices using Kubernetes, Jenkins, and Docker. Proven track record in
delivering scalable, secure, and high-performance systems across telecom, finance, and enterprise sectors. Strong
collaborator with cross-functional teams, mentoring experience, and a passion for clean code and automation.

Kompetenzen

Kompetenzen

Schwerpunkte

Java
Experte
Java SE/EE
Experte
JavaScript
Experte
TypeScript
Experte
Spring Boot
Experte
Node.Js
Experte
React
Experte
Docker
Experte
Kubernetes
Experte
Jenkins
Experte
Git
Experte
GitLab
Experte
AWS
Experte
Azure
Experte
SQL
Experte
PostgreSQL
Experte
Postman / Soap UI
Experte
Kotlin
Fortgeschritten
Python
Fortgeschritten
.NET
Fortgeschritten
GCP
Fortgeschritten
Cucumber
Fortgeschritten
Playwright
Fortgeschritten
Selenium
Fortgeschritten
Grafana
Fortgeschritten

Branchen

Branchen

Telecom, finance, and enterprise sectors.

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

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

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