Backend architecture
Design and implementation of robust services, monolith decomposition, API design, and performance-sensitive backend systems.
What I do
I help companies build the parts of the system that are hard to fake.
I am a senior independent engineer focused on backend architecture, data engineering, cloud infrastructure, and operational reliability. I work best on systems that need to scale, stay observable, and survive real-world load.
20+ years across backend engineering, data platforms, cloud infrastructure, and production operations.
Services
Data engineering
ETL pipelines, Spark workloads, Iceberg-based platforms, Parquet lakehouse ingestion, and migration of legacy data stacks.
Platform & DevOps
Kubernetes, Terraform, CI/CD, AWS and Hetzner deployments, authentication integration, and production operations.
Technical leadership
System design, delivery ownership, mentoring, code review, and engineering direction for teams shipping critical software.
Selected experience
Recent roles and representative work
Senior Software Engineer · Touch4IT
Built scalable data platforms using Apache Spark, Apache Iceberg, Kubernetes, and S3-backed Parquet ingestion. Managed infrastructure with Terraform, Skaffold, and Kustomize, and orchestrated workloads with Airflow and KubernetesExecutor.
Senior Staff Software Engineer · SentinelOne
Worked on high-performance user behavior detection systems built with Java, Spring Boot, Redis, and Kubernetes, with an emphasis on seamless horizontal scalability.
Lead Software Engineer · GoHealth Slovakia
Designed ETL pipelines, integrated third-party systems, migrated legacy pipelines to Databricks, and helped deploy AWS-based data infrastructure with DLT, PySpark, and CI/CD pipelines.
Senior Java Software Engineer · Reside Admissions
Led backend architecture work, drove monolith-to-microservice refactoring on AWS ECS, improved observability, and reduced cloud costs by more than half.
Earlier work across Java, Rust, C#, and embedded systems
Delivered backend and systems software in domains including cryptocurrency infrastructure, industrial measurement, automotive, energy distribution, and internal enterprise platforms.
Contact
Available for freelance backend, data, and infrastructure work.
If you need a senior engineer who can move from system design to implementation to production operations, this page is intentionally the short version.
Email: hello@masterminds.sk
Location: Bratislava, Slovakia
Work mode: Remote, hybrid, contract
Email me