Software engineer profile · 2026
Vladislav Khorunzhiy
Software engineer: production backend, data, and product interfaces.
Experience6+ yearsFintech, telemetry, mining infrastructure
BackendGoAPIs, microservices, queues, high-load systems
ProductTypeScriptNext.js, React, frontend architecture
SystemsRustTools, learning, open source
Experience
Production systems
HeadFrame
Golang developer
Bitcoin mining infrastructure: Stratum Relay, virtual hashrate, pool integrations, and observability.
- Identified why the hashrate metric falsely appeared to drop across the Redis → collector → Grafana chain.
- Improved the relay handshake, preventing first-message blocking and the mining.subscribe timeout.
- Unified the rates from 5 external pools behind a common interface for profitability comparison.
Go · PostgreSQL · Redis · Kafka · ClickHouse · Prometheus · Grafana · Loki
Delimobil
Golang developer
High-load telemetry for a fleet of more than 30,000 vehicles.
- Built a Go and React telemetry emulator, reducing test-scenario setup from 30 minutes to a few seconds.
- Automated packet validation for new CAN providers.
- Contributed to migrating the telemetry stack to gRPC and Kafka.
Go · gRPC · PostgreSQL · Redis · ClickHouse · Kafka · Kubernetes
Halyk Bank
Golang developer
High-load B2C internet banking services and integrations with payment systems.
- Developed an incoming-payments service with idempotent operation processing.
- Reduced PostgreSQL load by 30% with Redis and asynchronous processing through Kafka.
- Optimized the GraphQL gateway for mobile clients with batching.
Go · PostgreSQL · Redis · Kafka · gRPC · GraphQL · GitLab CI
Competency system
From runtime to user flows
Backend
Go, REST, gRPC, GraphQL, WebSocket, CQRS, concurrency
Data
PostgreSQL, Redis, Kafka, ClickHouse, MySQL, Elasticsearch
Reliability
Prometheus, Grafana, Loki, ELK, tracing, incident analysis
Frontend
TypeScript, React, Next.js, WebGL, accessibility, browser QA
Infrastructure
Linux, Git, Docker, Kubernetes, Helm, Nginx, GitLab CI
Languages
Russian — native · English — B2
Education
MTUCI · Technical University of Communications and Informatics
Fundamental Computer Science and Information Technologies · software development engineering.