dmsus
Senior Backend Engineer (Go)
Backend engineer with 12+ years building high-throughput distributed systems in Go, including hands-on production work on Web3 infrastructure — smart-contract development in Solidity and a live Ethereum↔Polygon cross-chain bridge. Strong track record on database and service performance at scale (5,000+ RPS at sub-50ms p95 latency, 12x report-time reductions) and on cutting operating cost through caching and rate-limiting design (-40% paid API spend). Recently stepped into a Tech Lead role coordinating an 8-person cross-functional team. Comfortable working async across time zones; fluent English, currently building conversational Mandarin.
Experience: 11 years
Yearly salary: $100,000
Hourly rate: $50
Nationality: 🌏 Remote
Residency: Worldwide
Experience
Go Developer
MTS Digital 2024 - 2025
Designed a 5-microservice architecture (Go, gRPC) for an LLM-based competency assessment system. Built an LLM Gateway with Redis caching, rate limiting, and a circuit breaker, cutting paid LLM API calls by 40%. Tuned PostgreSQL (connection pooling, indexing, partitioning) to sustain 5,000 RPS at <50ms p95 latency. Set up CI/CD (GitHub Actions) and observability (Prometheus, Grafana); kept unit-test coverage at 85%.
Go Developer
MTS Digital 2024 - 2025
Designed a 5-microservice architecture (Go, gRPC) for an LLM-based competency assessment system. Built an LLM Gateway with Redis caching, rate limiting, and a circuit breaker, cutting paid LLM API calls by 40%. Tuned PostgreSQL to sustain 5,000 RPS at <50ms p95 latency. Set up CI/CD and observability; kept unit-test coverage at 85%.
Go Developer
S-Soft 2023 - 2024
Built Lock-and-Mint smart contracts (Solidity) and a Go backend orchestrator for event monitoring and transaction management. Added multi-signature approval for critical operations and an alerting system; supported 100+ cross-chain transactions/hour. Built a Go + Apache Airflow ETL pipeline processing 1M+ events/day. Re-modeled ClickHouse schema and queries (partitioning, materialized views), cutting analytical report runtime 12x. Built an async integration service using worker pools, exponential-backoff retries, and a PostgreSQL-backed dead-letter queue.
Go Developer
S-Soft 2023 - 2024
Built Lock-and-Mint smart contracts (Solidity) and a Go backend orchestrator for event monitoring and transaction management. Added multi-signature approval for critical operations and an alerting system; supported 100+ cross-chain transactions/hour. Built a Go + Apache Airflow ETL pipeline processing 1M+ events/day. Re-modeled ClickHouse schema and queries, cutting analytical report runtime 12x. Built an async integration service using worker pools, exponential-backoff retries, and a PostgreSQL-backed dead-letter queue.
Go Developer
AdMortgage 2020 - 2023
Built the core mortgage-application processing engine, integrating with credit bureaus and legacy ERP systems. Built OCR-based document validation, rate-calculation, and PDF report-generation modules. Optimized SQL queries and schema, cutting processing time for key operations by 25%.
Go Developer
AdMortgage 2020 - 2023
Built the core mortgage-application processing engine, integrating with credit bureaus and legacy ERP systems. Built OCR-based document validation, rate-calculation, and PDF report-generation modules. Optimized SQL queries and schema, cutting processing time for key operations by 25%.
Go Developer
Weir Minerals 2018 - 2020
Designed and built the backend for an analytics platform, integrating with SAP via RFC/BAPI interfaces. Cut complex report-generation time by 35% through query optimization and parallel processing.
Go Developer
Weir Minerals 2018 - 2020
Designed and built the backend for an analytics platform, integrating with SAP via RFC/BAPI interfaces. Cut complex report-generation time by 35% through query optimization and parallel processing.
Backend Developer
Trident Seafoods 2013 - 2018
Built ETL pipelines consolidating Oracle DB data across 8 regional markets. Built REST APIs for sales-metrics access; automation cut data-prep time by 40%.
Backend Developer
Trident Seafoods 2013 - 2018
Built ETL pipelines consolidating Oracle DB data across 8 regional markets. Built REST APIs for sales-metrics access; automation cut data-prep time by 40%.
Skills
docker
ethereum
golang
grafana
graphql
kubernetes
polygon
postgres
redis
solidity
tech-lead
web3
english
russian