Senior Platform Engineer

European marketplace for refurbished electronics with over 5 million customers in 11 markets. Part of the platform team that runs the infrastructure, CI/CD and core backend services behind ~25 Go microservices.

• Built backend services in Go: REST and gRPC API, third-party integrations, features and performance work.
• Managed Google Cloud infrastructure with Terraform and the Kubernetes platform on GKE, including cluster upgrades and Helm deployments across environments.
• Owned the GitLab CI/CD setup with a self-hosted swarm of runners and optimised container builds.
• Managed the production PostgreSQL database, including a zero-downtime major-version upgrade and query performance tuning.
• Managed monitoring and alerting for the platform with Grafana and Prometheus.
• Used agentic coding in daily work, with custom agents, skills and MCP integrations for the codebase and infrastructure.

Senior Founding Engineer

Founding engineer at CAST AI, now a unicorn valued at over $1 billion, building multi-cloud and cost optimisation products for Kubernetes clusters with the US-based founders from day one. Backend service API, Terraform infrastructure and continuous delivery, with a focus on cloud provider integrations and extending cluster functionality.

• Integrations with all major clouds: AWS, GCP, Azure.
• Kubernetes operators and in-cluster agents that extend cluster functionality, working close to Kubernetes internals.
• REST and gRPC API, messaging, a large number of third-party integrations.
• Infrastructure as code with Terraform and GitOps, continuous delivery, automated testing.
• Developed and maintained the product's Terraform provider (public contributions on GitHub).

Senior Backend Developer

Ad-tech startup founded by two German entrepreneurs. Designed the backend architecture and the development and testing practices, delivered the first system and started the second. In parallel, delivered a customised DSP system for a group of entrepreneurs from Belgium.

• Agile delivery with about 3 teams of 5 senior engineers each.
• AWS, Docker, Spring Cloud microservices, CI/CD, messaging and many external integrations.

Software Developer

eProcurement and invoice handling systems used by many clients, Nordea being the main one. Distributed agile teams across Sweden, Romania and Lithuania. Collaborated with architects on technical decisions, supported team members on technical and domain problems, improved development and testing processes, and built test automation.

Software Developer

International projects for the leading telecom operator in the Nordics, in distributed agile teams across Norway, Finland, Czechia, Latvia and Lithuania. E-commerce system, web development, microservices and integrations.