Senior Frontend Engineer

Responsibilities Design, develop, and maintain backend services and APIs Participate in architecture and design discussions; write and review technical design documents Write clean, maintainable, well-tested code with comprehensive unit and integration test coverage Optimize database schemas and queries; ensure performance and reliability under load Build event-driven and asynchronous workflows using message brokers Monitor, troubleshoot, and improve production systems; take part in incident response and post-mortems Contribute to CI/CD pipelines, infrastructure-as-code, and engineering best practices Perform code reviews and mentor Middle and Junior engineers Collaborate with Product, Design, Frontend, QA, and DevOps to deliver features end to end Maintain clear API and technical documentation ABOUT THE TEAM You will join a product engineering team of backend, frontend, QA, and DevOps engineers working closely with Product and Design. The team owns its services end to end: from design and implementation to deployment, monitoring, and on-call support. Typical Tech Stack: Language: Go Databases: PostgreSQL, MySQL, Redis Messaging: Kafka, RabbitMQ, or NATS APIs: REST, gRPC, OpenAPI (Swagger) Authentication & Authorization: OAuth 2.0 / OIDC Infrastructure: Docker, Kubernetes, CI/CD (GitLab CI or similar) Observability: Metrics, centralized logging, distributed tracing, alerting Nice to have Required: 5+ years of commercial backend development experience Strong proficiency in Go: idiomatic code, concurrency patterns, performance profiling Solid understanding of relational databases (PostgreSQL or MySQL): schema design, indexing, query optimization, migrations Experience with Redis or similar caching solutions Experience designing and implementing REST APIs (gRPC is a plus) and documenting them with OpenAPI/Swagger Understanding of microservices architecture and distributed systems trade-offs (consistency, availability, failure modes) Experience with message brokers (Kafka, RabbitMQ, NATS, or similar) and event-driven design Experience with Docker and a good understanding of Kubernetes basics Proficiency with Git and CI/CD practices Solid experience with automated testing (unit, integration) Understanding of application security fundamentals (OWASP Top 10, secure handling of secrets and user data, authentication and authorization basics) Good written and spoken English Preferred: Experience with observability tooling (Prometheus, Grafana, ELK/Graylog, OpenTelemetry) Experience with high-load systems and performance profiling Experience with cloud platforms (GCP, AWS, or Azure) and infrastructure-as-code Experience with NoSQL databases (MongoDB or similar) Experience leading technical initiatives or mentoring engineers Experience in gaming, e-commerce, fintech, or payments domains Practical, up-to-date experience with modern AI tools (e.g. Claude, Copilot, Cursor) for code generation, review, and accelerating day-to-day engineering work