Backend Engineer, Golang, SQL/NoSQL, Docker, Kubernates, AI, OAuth 2.0, JWT, JSON, UML, GCP
Aktualisiert am 15.07.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 01.07.2025
Verfügbar zu: 100%
davon vor Ort: 100%
Golang
SQL
Docker
Kubernetes
NoSQL
Linux
English
Fluent
Russian
Muttersprache
German
Beginner

Einsatzorte

Einsatzorte

Maintal (+50km) Hanau (Deutschland) (+50km) Frankfurt am Main (+50km)
Deutschland
möglich

Projekte

Projekte

8 months
2025-04 - now

Architected and developed a scalable IoT solution

CTO and Backend Engineer
CTO and Backend Engineer
  • Architected and developed a scalable IoT solution integrating wireless LoRaWAN devices and automation controllers for 100K+ data points by applying event-driven architecture based on NATS and Google Pub/Sub
cosy.green
Frankfurt Rhine-Main Metropolitan Area, Germany (remote)
6 months
2024-10 - 2025-03

Developed an identity solution enabling user authentication

Backend Engineer
Backend Engineer
  • Developed an identity solution enabling user authentication across 4 apps using Firebase (Golang, OAuth 2.0)
  • Reduced troubleshooting time to minutes by adding correlation ID to system monitoring based on Datadog
Parship Group
Dresden, Germany (remote)
9 months
2024-01 - 2024-09

Architected and developed a scalable IoT solution

CTO and Backend Engineer
CTO and Backend Engineer
  • Architected and developed a scalable IoT solution integrating wireless LoRaWAN devices and automation controllers for 100K+ data points by applying event-driven architecture based on NATS and Google Pub/Sub
cosy.green
1 year 2 months
2022-12 - 2024-01

Built an internal tool

Backend Engineer
Backend Engineer
  • Built an internal tool with essential features that optimized microservice workflows for daily engineering tasks
  • Developed a real-time chat with 10K+ daily messages between tutors and students (Twilio, Golang, Pulsar)
  • Migrated 10+ microservices to gRPC for better performance and ensuring API backward compatibility (Golang)
  • Automated gRPC models generation, helping 30+ developers avoid version conflicts and standardize tool usage
GoStudent
Vienna, Austria (remote)
1 year 3 months
2021-10 - 2022-12

Designed a RESTful API

Golang Developer
Golang Developer
  • Designed a RESTful API to integrate Talon.One with third-party services (Golang, Postgres, Docker, OAS 3.x)
  • Extended the 3rd-party API with asynchronous callbacks for real-time data processing (Postgres, worker pool)
  • Led and delivered 6 integrations with 3rd-party systems by implementing custom APIs (Golang, REST APIs)
  • Reduced troubleshooting time to minutes by adding correlation ID to system monitoring based on Datadog
Talon.One
Berlin, Germany (remote)
19 years 10 months
2002-03 - 2021-12

Key projects

  • Successfully implemented a complete AAA solution based on the RADIUS protocol, supporting EAP-TTLS/PAP and EAP-TTLS/MSCHAPv2 authentication protocols. Supported connectivity to open and closed WiFi networks
  • Developed a workflow management and analytics system for a recycling facility in Armenia (OpenAI API, RAG)
  • Architected and implemented a software licensing protection system using RSA and DSA cryptographic algorithms, ensuring secure key validation, tamper resistance, and developed the related back-office (Golang)
  • Developed a new B2B PSIM & BMS product, Alphalogic, served as CDO and Product Owner, managing full product lifecycle and stakeholder requirements (Protobuf, MySQL, Java, C++, Python)
Earlier career

Position

Position

  • Backend Engineer
  • Golang Specialist (5+ years)
  • System Architect (10+ years)

Kompetenzen

Kompetenzen

Top-Skills

Golang SQL Docker Kubernetes NoSQL Linux

Produkte / Standards / Erfahrungen / Methoden

Best practices

OWASP, TDD, DDD, EDA, Integration Testing, Caching Strategies, Rate Limiting, Distributed tracing, Load balancing


Networking

TCP, UDP, HTTP 1.1/2/3, gRPC/Protobuf, REST, NATS/JetStream, Google Pub/Sub, MQTT, Kafka, Websockets


Cloud platforms & DevOps

GCP, Heroku, Digital Ocean, Neon, Sentry, Jira, Datadog, Grafana, Prometheus, Firebase, Twilio, ArgoCD, Kubernetes


AI/ML Tools

OpenAI API, Mistral LLM, Retrieval-Augmented Generation (RAG), Cursor, Prompt engineering


Developer tools

git, GitLab CI/CD, Magefile, GitHub Actions, Docker, Goland, Podman


Standards & Protocols

OpenAPI, OAuth 2.0, JWT, JSON, UML, RSA, ED, CBOR, RADIUS

Betriebssysteme

Debian
Centos
Ubuntu
Systemd
Windows
Shell scripting
System administration

Programmiersprachen

Golang/Go
SQL (T-SQL)
Markdown
Dart/Flutter
CSS
HTML 5
Typescript

Datenbanken

PostgreSQL
SQLite
Database migration
Spanner
Scylla
MongoDB
NoSQL
Query Performance tuning

Einsatzorte

Einsatzorte

Maintal (+50km) Hanau (Deutschland) (+50km) Frankfurt am Main (+50km)
Deutschland
möglich

Projekte

Projekte

8 months
2025-04 - now

Architected and developed a scalable IoT solution

CTO and Backend Engineer
CTO and Backend Engineer
  • Architected and developed a scalable IoT solution integrating wireless LoRaWAN devices and automation controllers for 100K+ data points by applying event-driven architecture based on NATS and Google Pub/Sub
cosy.green
Frankfurt Rhine-Main Metropolitan Area, Germany (remote)
6 months
2024-10 - 2025-03

Developed an identity solution enabling user authentication

Backend Engineer
Backend Engineer
  • Developed an identity solution enabling user authentication across 4 apps using Firebase (Golang, OAuth 2.0)
  • Reduced troubleshooting time to minutes by adding correlation ID to system monitoring based on Datadog
Parship Group
Dresden, Germany (remote)
9 months
2024-01 - 2024-09

Architected and developed a scalable IoT solution

CTO and Backend Engineer
CTO and Backend Engineer
  • Architected and developed a scalable IoT solution integrating wireless LoRaWAN devices and automation controllers for 100K+ data points by applying event-driven architecture based on NATS and Google Pub/Sub
cosy.green
1 year 2 months
2022-12 - 2024-01

Built an internal tool

Backend Engineer
Backend Engineer
  • Built an internal tool with essential features that optimized microservice workflows for daily engineering tasks
  • Developed a real-time chat with 10K+ daily messages between tutors and students (Twilio, Golang, Pulsar)
  • Migrated 10+ microservices to gRPC for better performance and ensuring API backward compatibility (Golang)
  • Automated gRPC models generation, helping 30+ developers avoid version conflicts and standardize tool usage
GoStudent
Vienna, Austria (remote)
1 year 3 months
2021-10 - 2022-12

Designed a RESTful API

Golang Developer
Golang Developer
  • Designed a RESTful API to integrate Talon.One with third-party services (Golang, Postgres, Docker, OAS 3.x)
  • Extended the 3rd-party API with asynchronous callbacks for real-time data processing (Postgres, worker pool)
  • Led and delivered 6 integrations with 3rd-party systems by implementing custom APIs (Golang, REST APIs)
  • Reduced troubleshooting time to minutes by adding correlation ID to system monitoring based on Datadog
Talon.One
Berlin, Germany (remote)
19 years 10 months
2002-03 - 2021-12

Key projects

  • Successfully implemented a complete AAA solution based on the RADIUS protocol, supporting EAP-TTLS/PAP and EAP-TTLS/MSCHAPv2 authentication protocols. Supported connectivity to open and closed WiFi networks
  • Developed a workflow management and analytics system for a recycling facility in Armenia (OpenAI API, RAG)
  • Architected and implemented a software licensing protection system using RSA and DSA cryptographic algorithms, ensuring secure key validation, tamper resistance, and developed the related back-office (Golang)
  • Developed a new B2B PSIM & BMS product, Alphalogic, served as CDO and Product Owner, managing full product lifecycle and stakeholder requirements (Protobuf, MySQL, Java, C++, Python)
Earlier career

Position

Position

  • Backend Engineer
  • Golang Specialist (5+ years)
  • System Architect (10+ years)

Kompetenzen

Kompetenzen

Top-Skills

Golang SQL Docker Kubernetes NoSQL Linux

Produkte / Standards / Erfahrungen / Methoden

Best practices

OWASP, TDD, DDD, EDA, Integration Testing, Caching Strategies, Rate Limiting, Distributed tracing, Load balancing


Networking

TCP, UDP, HTTP 1.1/2/3, gRPC/Protobuf, REST, NATS/JetStream, Google Pub/Sub, MQTT, Kafka, Websockets


Cloud platforms & DevOps

GCP, Heroku, Digital Ocean, Neon, Sentry, Jira, Datadog, Grafana, Prometheus, Firebase, Twilio, ArgoCD, Kubernetes


AI/ML Tools

OpenAI API, Mistral LLM, Retrieval-Augmented Generation (RAG), Cursor, Prompt engineering


Developer tools

git, GitLab CI/CD, Magefile, GitHub Actions, Docker, Goland, Podman


Standards & Protocols

OpenAPI, OAuth 2.0, JWT, JSON, UML, RSA, ED, CBOR, RADIUS

Betriebssysteme

Debian
Centos
Ubuntu
Systemd
Windows
Shell scripting
System administration

Programmiersprachen

Golang/Go
SQL (T-SQL)
Markdown
Dart/Flutter
CSS
HTML 5
Typescript

Datenbanken

PostgreSQL
SQLite
Database migration
Spanner
Scylla
MongoDB
NoSQL
Query Performance tuning

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