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Backend-розробник
- Considering positions:
- Backend-розробник, Програміст Golang
- City:
- Lviv
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ROMAN BYDREVUCH
Lviv, Ukraine (GMT+3) | [open contact info ](look above in the "contact info" section) | [open contact info ](look above in the "contact info" section)
SUMMARY
Results-oriented software engineer with 4+ years of experience building and scaling high-performance
applications in B2B SaaS startups serving top-tier clients and B2C FoodTech.
Successfully led the development of a high-traffic project for Deliveroo, supporting over 1.2 million
daily active users. Previously contributed to a complex B2B SaaS LQA platform.
TECHNICAL SKILLS
Programming Languages: Golang, Python, basic C/C++ & Rust understanding
Databases: PostgreSQL, CockroachDB, MySQL, MongoDB, Redis, Dragonfly, Cassandra, ScyllaDB,
Clickhouse
Tools: gRPC, NATS, Kafka, RabbitMQ, AWS (EC2, S3, SQS, SES), Docker, Kubernetes, CI/CD,
Prometheus + Grafana, Solana/Anchor
Architecture and Practices: Microservices, DDD, CQRS, OAuth2, JWT
WORK EXPERIENCE
Software Engineer 04/2023 – 02/2025
Deliveroo | United Kingdom, London
● Contributed to designing and maintaining Golang-based microservices handling real-time order
logistics and customer notifications, supporting 1.2M+ DAU with 99.9% uptime.
● Led performance tuning for PostgreSQL queries and gRPC service calls, cutting average
response time from 300ms to under 120ms and slashing p95 latency across key APIs.
● Worked closely with DevOps to implement autoscaling and service observability (Prometheus +
Grafana), reducing on-call incidents by 40% during high-load events.
● Improved system resilience by adding circuit breakers and retries using Hystrix-like patterns,
significantly decreasing failures in cross-service communication.
Software Engineer 03/2021 – 01/2023
ContentQuo | Tallinn, Estonia
● Contributed to the "Plan" microservice for translation evaluations, helping win Spotify as a client.
● Led integration of Smartcat TMS — TikTok's top requirement — enabling automated translation
data importsand.
● Built and maintained the Market Reach service to improve platform usage insights.
● Boosted performance by cutting redundant API calls and optimizing SQL queries time by 25%.
RELEVANT EXPERIENCE AND PROJECTS
● Developed lightweight, expressive error handling library go-errx that provides error codes,
context, and a fluent builder API.
● Developed a caching library with TTL expiration and a built-in cleanup worker go-stash
EDUCATION
Lviv Polytechnic National University | Cybersecurity
Lviv, Ukraine (GMT+3) | [
SUMMARY
Results-oriented software engineer with 4+ years of experience building and scaling high-performance
applications in B2B SaaS startups serving top-tier clients and B2C FoodTech.
Successfully led the development of a high-traffic project for Deliveroo, supporting over 1.2 million
daily active users. Previously contributed to a complex B2B SaaS LQA platform.
TECHNICAL SKILLS
Programming Languages: Golang, Python, basic C/C++ & Rust understanding
Databases: PostgreSQL, CockroachDB, MySQL, MongoDB, Redis, Dragonfly, Cassandra, ScyllaDB,
Clickhouse
Tools: gRPC, NATS, Kafka, RabbitMQ, AWS (EC2, S3, SQS, SES), Docker, Kubernetes, CI/CD,
Prometheus + Grafana, Solana/Anchor
Architecture and Practices: Microservices, DDD, CQRS, OAuth2, JWT
WORK EXPERIENCE
Software Engineer 04/2023 – 02/2025
Deliveroo | United Kingdom, London
● Contributed to designing and maintaining Golang-based microservices handling real-time order
logistics and customer notifications, supporting 1.2M+ DAU with 99.9% uptime.
● Led performance tuning for PostgreSQL queries and gRPC service calls, cutting average
response time from 300ms to under 120ms and slashing p95 latency across key APIs.
● Worked closely with DevOps to implement autoscaling and service observability (Prometheus +
Grafana), reducing on-call incidents by 40% during high-load events.
● Improved system resilience by adding circuit breakers and retries using Hystrix-like patterns,
significantly decreasing failures in cross-service communication.
Software Engineer 03/2021 – 01/2023
ContentQuo | Tallinn, Estonia
● Contributed to the "Plan" microservice for translation evaluations, helping win Spotify as a client.
● Led integration of Smartcat TMS — TikTok's top requirement — enabling automated translation
data importsand.
● Built and maintained the Market Reach service to improve platform usage insights.
● Boosted performance by cutting redundant API calls and optimizing SQL queries time by 25%.
RELEVANT EXPERIENCE AND PROJECTS
● Developed lightweight, expressive error handling library go-errx that provides error codes,
context, and a fluent builder API.
● Developed a caching library with TTL expiration and a built-in cleanup worker go-stash
EDUCATION
Lviv Polytechnic National University | Cybersecurity
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The candidate's resume is posted at https://www.work.ua/resumes/13877110/