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Thomas Varga

@thomasvarga1

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Senior software engineer building microservices and AI-driven features for enterprise SaaS at scale.

Hungary

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What I'm looking for

I’m looking for a role where I can build scalable microservices and event-driven systems, ship AI (LangChain/RAG) features, and own production-grade backend/frontend work with strong CI/CD in an Agile, remote-friendly culture.

I’m a Senior Software Engineer with 10+ years building full-stack systems across Python, Rust, Node.js, C#, Java, and Go for enterprise SaaS platforms. I specialize in microservices and event-driven architecture, with a strong focus on AI-driven features.

I’ve delivered production systems that process high volumes of data across distributed engineering teams. On the AI side, I integrate OpenAI API and build RAG pipelines with LangChain, including vector search, embeddings, and prompt engineering.

I work hands-on with AWS, Docker, Kubernetes, and CI/CD in fast-moving Agile environments. I lead code reviews, drive technical discussions, and mentor engineers—while collaborating with product managers and designers to refine AI workflows sprint by sprint.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

DevTechStudio LLC

May 2023 - Present (3 years 1 month)

Built Python and Go backend services with REST APIs and microservices to support internal workflows and AI pipelines. Integrated OpenAI API with LangChain, implemented RabbitMQ/Redis messaging and caching, and led code reviews/mentoring for a team of 6 engineers.

Python Go fastAPI Microservices REST APIs Lang Chain Docker Kubernetes CI CD

FullStack Engineer

Bits Kingdom

Apr 2019 - Apr 2023 (4 years)

Developed Node.js and Java microservices and REST APIs, including asynchronous tasks and enterprise data-processing workflows. Implemented authentication/authorization with RBAC, optimized PostgreSQL/MongoDB performance, and set up CI/CD pipelines with GitHub Actions and Docker.

Node.Js Java REST APIs Microservices React Angular RBAC PostgreSQL MongoDB CI CD NodeJS

FullStack Developer

Seon

Aug 2016 - Mar 2019 (2 years 7 months)

Created ASP.NET Core and PHP/Node.js backend functionality including REST APIs and data-processing workflows, and supported Angular/React frontend integration. Maintained and optimized MySQL databases, improved authentication and security, and contributed to architectural discussions with a team of 12.