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