Ruslan Ismailov

Summary

Senior backend developer with 9 years of experience building high-load systems in PHP/Laravel and Go. I design resilient APIs, optimise PostgreSQL and Redis, build microservices and set up CI/CD processes. I combine product thinking with engineering rigour: reliability, observability and maintainable code come first.

Work experience

1. Senior Backend Engineer

   2022 — present

   FinTech platform (payments and billing)

   • Designed a payment gateway with idempotent transaction handling; reduced the share of disputed charges to near zero.
   • Extracted billing into a separate Go service, cutting the p99 latency of critical operations by 3x.
   • Introduced queues and background jobs with retries and deduplication, improving the reliability of integrations.

2. Backend Engineer

   2019 — 2022

   Marketplace / data aggregator

   • Optimised key PostgreSQL queries and eliminated mass N+1 issues, speeding up the catalogue several times over.
   • Designed a versioned REST API with OpenAPI documentation for mobile and web clients.
   • Set up Redis caching and invalidation, offloading the database during peak hours.

3. PHP / Laravel Developer

   2017 — 2019

   Product web studio

   • Developed business logic in Laravel: from models and access policies to background jobs.
   • Containerised applications in Docker and automated deployment through CI/CD pipelines.
   • Covered critical code with tests, reducing regressions between releases.

Skills

More about my experience with each technology is in the “Technologies” section.

Education and growth