Summary
Senior Backend Developer and Infrastructure Architect with almost 20 years of experience building backend systems and the cloud infrastructure that runs them, for high-load, business-critical products. Scaled web systems to 1M+ concurrent users and a ride-hailing backend to 40K daily trips; built continuous delivery for 100+ microservices sustaining 600 deploys per day. Deep hands-on expertise in backend engineering, data processing, AWS, Infrastructure as Code, CI/CD. Takes end-to-end ownership in fast-moving startups: technical decisions under ambiguity, going beyond the role when the product needs it.
Core Skills
- Cloud & Infrastructure
- AWSLinuxNetworking KubernetesInfrastructure as CodeServerless
- Programming
- ClojurePythonGolang Java/KotlinCC++
- Databases
- RDBMS, NoSQL/schemaless, column storages, highly-available, highly-performant, consistent databases and storages.
- Architecture & Service Management
- Requirements gathering and solution design for business needs, service ownership and production readiness, incident and change management, vendor evaluation and coordination, stakeholder communication, team leadership.
Work Experience
Independent Infrastructure & Platform Consultant
2019 — presentWarsaw, PL (remote)
Long-form engagements for five clients across AAA gaming, networking, health-tech, public sector, and consumer mobile; currently building a clinical data platform and an AI-powered video-processing pipeline.
Backend Developer / Cloud Architect
2025 — presentClinical data platform for healthcare providers
Designing and building the platform end to end: ETL and data-processing pipelines for clinical data (HL7/FHIR), written in Clojure and Python, on AWS (Step Functions, ECS, Batch, Lambda, S3, RDS), with the full infrastructure lifecycle managed in Terraform.
Stack: Clojure, Python, Terraform, PostgreSQL, HL7/FHIR, AWS
Backend Developer / Infrastructure Engineer
2024+Teleprompter — AI-powered video-processing pipeline
Building a video-processing pipeline applying AI video tools, running on AWS EC2 with Spot instances; the API, pipeline orchestration, and scheduler are written in Clojure.
Stack: Clojure, Terraform, AWS (EC2, Spot)
Principal Site Reliability Engineer
2023 — 2025People Can Fly — AAA game developer
- Built and launched the foundation for a self-hosted online game platform serving 600+ developers across 4 new titles.
- Built the content pipeline for staging environments, cutting content developers' iteration time from days to minutes.
- Defined the target architecture with external game-hosting providers (Unity Multiplay, AWS GameLift) and coordinated implementation with their teams.
- Owned production readiness — deployments, observability, reliability requirements — and built the platform's CI/CD pipeline.
Stack: AWS, Terraform, Java, Kotlin, GitHub Actions, GameLift, Multiplay
Software Developer (part-time)
2022 — 2023Actmobile — wscp, a maximum-throughput network transfer tool
- Designed a dual-channel transfer model (UDP for data, TCP for retransmits) that outperformed standard TCP by 2–10× in bandwidth utilization on lossy links.
- Integrated LwIP, a userspace TCP/IP stack, into the company's C-based VPN product and stabilized it in production.
Stack: Linux, C, LwIP, TCP, UDP
Senior Backend Developer / Principal Infrastructure Engineer (part-time)
2021 — 2022Palta — health-tech startup incubator
- Designed and implemented a multi-tenant analytics event pipeline (API Gateway → Kinesis Firehose → S3 → SQS → Lambda → Snowflake) processing 50M events/day and absorbing 5× load spikes, at one-tenth the cost of Amplitude.
- Built an HTTP callbacks system with retries and guaranteed delivery; designed payments infrastructure for rapid load scaling.
Stack: PostgreSQL, Kafka, Snowflake, Terraform, Atlantis, Grafana, AWS
Software Developer
2019 — 2021Danish Ministry of Taxation (via Flexiana) — national property taxation system in Clojure/ClojureScript
- Sped up the CD pipeline 4–10× by introducing granular per-component deployments, and bridged the gap between developers and infrastructure engineers.
- Maintained and extended several Clojure services to eliminate performance bottlenecks.
Stack: Clojure, PostgreSQL, Jenkins, Terraform, Atlantis, AWS
Solo Backend Engineer (part-time)
2019Wanna Kicks — AR try-on mobile app
Built the catalog backend and an encrypted, multi-versioned, multi-tenant distribution system delivering 200GB of 3D assets over CloudFront, plus event collection and SQL analytics on Kinesis Firehose and Athena.
Stack: Python, Chalice, Terraform, AWS
Senior Software Developer & Principal Infrastructure Engineer
2015 — 2018Juno — NYC ride-sharing service, acquired by Gett · onsite in Minsk, BY
- Scaled from a fresh team to 40K daily trips in under one year in the highly competitive NYC market, serving millions of users.
- Built the infrastructure platform and deployment tooling in Clojure.
- Established continuous delivery of 100+ backend microservices, running several times a day and sometimes exceeding 600 deploys daily.
- Worked on capacity planning and fault tolerance, isolating parts of the computing cluster into separate shards.
- Led a team of 5 infrastructure engineers serving 40 core backend engineers and 15 QA engineers.
- Provided developers with tooling to inspect production logs and metrics and to maintain their own alert sets.
Stack: Linux, Clojure, Golang, Python, MySQL/InnoDB, PostgreSQL, MongoDB, Docker, GoCD, nginx, Elasticsearch, Kibana, Prometheus, Grafana, AWS (EC2, ECS, RDS, S3, ElastiCache, Route 53)
Earlier — Infrastructure & Backend Engineering
2007 — 2015Wargaming.net · Kontur · Dyn (via EPAM) · Iron.io
- Wargaming.net (World of Tanks) — built deployment tooling and the web infrastructure team; scaled web systems to 1M+ concurrent players across 5 regions (RU, EU, US, CN×2).
- Kontur, Inc. (GIS service provider) — built backend infrastructure for Kontur Platform Services (Kubernetes, Java, nginx).
- Dyn Inc. (DNS, via EPAM, acquired by Oracle) — designed an API bridging legacy and new DNS systems; built Docker + Chef + Jenkins pipelines.
- Iron.io (cloud platform; freelance, 2013 – 2015) — migrated MongoDB clusters, automated monitoring, extended deployment infrastructure.
Education
M.Sc. in Artificial Intelligence / Information System Security
2004 — 2009Belarusian State University of Informatics and Radioelectronics — Faculty of Information Systems and Management
Master's thesis: “Intellectual collection and analysis of Internet service statistics in real time under high load.”