G2A
2022 → now
Senior Backend Engineer · B2B
Marketplace pricing and distributed systems under real production traffic: Rust services, pricing paths, recommendations, messaging, Redis data models and Kubernetes deployments.
Engineering
Rust Backend Engineer · distributed systems · performance · production ownership
I build backend systems, mostly in Rust. At G2A I work on pricing, recommendations, messaging and Redis-heavy paths under real marketplace traffic. I usually take a problem from profiling and architecture through implementation, deployment and production support.
My strongest work sits at the boundary between correctness and performance: bounded concurrency, idempotency, failure-aware delivery, explicit contracts and measurable runtime behaviour. I use Go, TypeScript and frontend tooling when the system needs them. Rust is the part I am strongest in.
Experience
10+ yearsVizlib
2021 → 2022
Backend Engineer · B2B
Architected and developed a smart query engine for a BI platform operating against data warehouses, including query generation, schema modelling and APIs.
Neurosys
2019 → 2021
Backend Engineer · B2B
Built event-driven microservices for an IoT smart-home platform and a communication hub integrating multiple content and QA systems.
SIENN + Mitron
2015 → 2019
Software Engineer
High-traffic scheduling and management systems, external integrations and operational web applications for railway and metro systems.
Systems I care about
Correctness
Atomic state, idempotency, explicit contracts and deterministic side effects.
Performance
Profiling, latency, batching, memory, throughput and removing unnecessary work.
Reliability
Backpressure, leases, retries, recovery, observability and incident follow-up.
Ownership
Architecture → implementation → deployment → production support.
Own product · Open source · Rust
CrowdRelay
A self-hosted production backend that turns rented attention into an owned fan relationship: signup → referral → city demand → rewards → tickets → admission.
I use it as a systems lab: PostgreSQL-authoritative state, transactional outbox delivery, capability boundaries, audited side effects and exact-release contracts across the surrounding product ecosystem.
Why it is technically interesting
- Atomic state. Business data, idempotency result and outbox event commit together in PostgreSQL.
- Failure-aware. At-least-once delivery, leases, bounded retries and dead-item recovery without pretending networks are reliable.
- Capability-driven. Public, fan, staff, admin, commerce and internal authorities are deliberately separated.
- Exact releases. Git/OCI revision identity plus executable cross-repo contracts keep the backend, mobile app, site and game aligned.
Open source · Rust · Tauri 2 · Leptos
Virya Signal
Mobile fan and staff client with a deliberate native trust boundary: Stronghold-backed credentials, encrypted local state, bounded network access, latest-wins refreshes and serialized mutations.
Open source · Rust · Axum · PostgreSQL
CrowdRelay Control Plane
Tenant provisioning and operations plane with crash-recoverable leases, separate host provisioner, tenant-scoped credentials, runtime freshness, rollback-aware deployment and exact-release verification.
Open source · Rust + Godot · performance
Synesthesia
Interactive album runtime with a narrow Godot↔Rust boundary, bounded preload and memory budgets, adaptive quality degradation, mobile/Web release contracts and immutable artifact promotion.
Stack I use
RustTokioAxumSQLxGoRabbitMQKafkaRedisPostgreSQLKubernetesDockerAWSTypeScriptAstro
Selected impact
- 60–70 → 15–30 msPricing path · production marketplace traffic. Reworked the full call chain by profiling end-to-end, changing data flow and removing unnecessary requests.
- ~40% faster cartCart + product bundles · G2A. Built a Rust recommendation service, reducing cross-service work and improving conversion and revenue.
- Up to ~40k msg/sMessaging workers · benchmarked bounded RabbitMQ model. Added backpressure, explicit ack/nack behaviour, reconnect control and graceful shutdown. Read the note →
- ~2× lower latencyRedis-heavy backend paths. Reduced latency with thinner records, search indexes, batching, pipelining and fewer network round-trips. Read the note →
- Production ownershipCritical services · design → deployment → observability → incident analysis → follow-up changes. I own the system beyond the implementation step.
Music work
Selected guitar, composition and production projects
Seed Of Doubt
Seed Of Doubt symbolizes the beginning of distrust—a single moment, word, or gesture that plants uncertainty in the mind. It starts small, almost invisible, but once it's there, it grows. Like a weed in a garden, it slowly twists around everything that was once pure, honest, and strong.
Unmasked
Unmasked is one of Virya's early singles and part of the band's debut album, Echoes Of The Modern Mind. Groovy guitars, heavy drums and the contrast between harsh and choir vocals make it one of the clearest snapshots of Virya's modern-metal sound.
