Veszprém, Veszprém, Hungary
Software engineer with 10+ years of experience building backend, integration-heavy, and cloud-based systems across SaaS, enterprise, and real-time environments. My recent focus lies in Python- and AWS-based event-driven platforms, enterprise CRM integrations, CI/CD automation, and reliable delivery in microservice ecosystems. To complement my traditional architecture skills, I am currently deep-diving into LLM Engineering, focusing on production-ready RAG pipelines, autonomous AI Agents, and Vector Databases. I work best on operationally complex systems where maintainability, release safety, and modern developer velocity (including Codex-driven agentic workflows) matter. Core Tech Stack & Competencies: - Backend & Logic: Python, Node.js/TypeScript, REST APIs, GraphQL - Cloud & Infra (IaC): AWS (Lambda, SQS, DynamoDB, CloudWatch), OpenTofu, Terragrunt, Docker, GCP - AI & Engineering Velocity: LLM Integration, Agentic Workflows, RAG Architecture - DevOps & Quality: CI/CD Automation (GitHub Actions), Observability (Sentry), Monorepos As a professional and a father, I thrive in remote-first or highly flexible hybrid environments that value a mature asynchronous engineering culture, clear documentation, and sustainable delivery. I am highly comfortable moving between product, platform, and integration concerns to reduce operational pain points. Currently Open to New Opportunities: I am looking for my next challenge as a Senior Backend / Platform / AI Application Engineer. I am fully open to permanent employee positions.
- Build and maintain a Python-based, AWS Lambda-driven event platform supporting enterprise CRM and tenant-specific integrations. - Develop and maintain microservices and shared modules in a monorepo environment, improving maintainability and delivery reliability. - Handle infrastructure and service wiring using OpenTofu and Terragrunt. - Improve CI/CD automation for build, packaging, and deployment workflows. - Strengthen production reliability through metrics, checkpointing, error handling, and Sentry-based monitoring. - Use AWS services, including Lambda, SQS, DynamoDB, and CloudWatch, in day-to-day engineering work. - Participate in on-call support and production troubleshooting. - Integrated Codex AI agents into the development lifecycle, streamlining feature implementation and boosting engineering velocity.
Project: Real-time 3D point cloud and map-based web application. - Contributed to the design and delivery of a real-time 3D point cloud and map-based application, focusing on performance, maintainability and release safety. - Helped identify and address performance bottlenecks in a complex legacy codebase. - Reworked a slow and unreliable CI/CD pipeline, introduced review requirements and improved delivery quality through automated testing. - Introduced unit and end-to-end testing for both legacy and newly developed parts of the system. - Mentored junior engineers through code reviews and hands-on guidance in Docker and clean-code practices. - Participated in software design and architecture discussions within the team.
- Built backend features and integrations for a multi-tenant SaaS platform, including payment-related flows and cloud-based data processing for reporting and charts. - Worked with GCP services such as Cloud Functions, BigQuery and Pub/Sub in production use cases. - Contributed to billing-related integration work, including Stripe-based payment flows. - Extended GraphQL schemas, resolvers and backend APIs across microservice-based services. - Improved CI/CD workflows to support more reliable automated testing and safer releases. - Delivered new product features in a multi-tenant environment with a focus on maintainability and service integration.
- Supported team delivery as Scrum Master in a software product environment. - Improved Agile workflow and adapted Scrum/Scrumban processes to better match team and project needs. - Helped maintain backlog quality, ceremonies and collaboration across development and testing.
- Delivered customer-facing features including camera connection visibility, video streaming and chat-related capabilities. - Built and supported cloud-hosted mediator services in .NET for real-time communication use cases. - Introduced CI/CD pipelines in Azure DevOps and improved engineering workflow for a mixed legacy and modern codebase. - Modernized parts of the platform by introducing JWT-based authentication for legacy Perl-based systems. - Improved developer experience through internal tooling and engineering workflow enhancements. - Worked across Angular, Node.js, Python, C#, ASP.NET Core and legacy components in a complex product environment.
- Collaborated directly with end users (military personnel) to gather feedback, reproduce reported issues, and clarify requirements. - Investigated and resolved software defects, ensuring high reliability in mission-critical simulation systems. - Conducted on-site testing and validation of fixes within operational environments. - Managed secure transfer and deployment of software to restricted military testing facilities, adhering to strict import/export protocols.
- Maintained and extended a production engineering desktop application used for industrial drive commissioning. - Worked on new features, maintenance and safety-related functionality in a long-lived C++/MFC codebase. - Collaborated with German colleagues in an international engineering environment. - Tested features on real drives and control units, gaining hands-on exposure to reliability-sensitive software delivery.