Senior Go Developer

Accountabilities:: Design, develop, and maintain robust, scalable, and reliable backend services aligned with evolving product and business requirements. Lead technical research, architecture design, and implementation of backend services and new functionality. Design solutions for high-load distributed systems while balancing performance, reliability, scalability, and maintainability. Work with synchronous and asynchronous service communication, including gRPC and message brokers, while considering delivery guarantees, idempotency, and load-balancing trade-offs. Design and optimize data models, database schemas, queries, indexes, replication, partitioning, and other scaling strategies. Implement and maintain caching strategies and distributed caching solutions using technologies such as Redis. Own backend services throughout their production lifecycle, including deployment, monitoring, troubleshooting, maintenance, and continuous improvement. Establish and maintain observability capabilities covering metrics, logging, dashboards, distributed tracing, alerting, and Go profiling. Participate actively in code reviews and architectural discussions while helping improve the overall technical quality of backend services. Collaborate with engineers and other teams to deliver cohesive and effective technical solutions. Mentor and guide other engineers, sharing best practices and promoting high standards for software development. Write clean, maintainable, and testable code supported by appropriate unit and integration test coverage. Requirements: 5+ years of commercial backend engineering experience in production environments. Strong professional experience with Go, including concurrency, synchronization primitives, context propagation, goroutine lifecycle management, and graceful shutdown patterns. Proven experience building and supporting high-load distributed systems. Recent experience developing products with complex business logic and frequently evolving requirements. Strong SQL and data modeling skills, including schema design, joins, aggregations, composite indexes, data type selection, query analysis, replication, partitioning, and sharding. Hands-on experience with MySQL or PostgreSQL. Strong understanding of caching strategies, including Redis, cache-aside patterns, cache warm-up, and background refresh. Experience with synchronous and asynchronous inter-service communication, including gRPC and message brokers, delivery guarantees, idempotency, and load-balancing considerations. Deep understanding of microservice architecture patterns, client-server interactions, and their respective trade-offs and limitations. Hands-on experience with observability practices, including metrics, logging, distributed tracing, alerting, and Go profiling with pprof. Understanding of non-functional requirements, including SLA, SLO, and SLI concepts. Experience with Docker, Kubernetes, CI/CD pipelines, and cloud platforms. Strong commitment to writing maintainable, testable code with solid unit and integration test coverage. Proficiency with Git and modern code review workflows. Ability to explain architecture and technical decisions at different levels of depth. Strong problem-solving skills and the ability to turn ambiguous requirements into clear solutions and actionable workloads. Experience with event-driven architectures using Kafka, NATS, RabbitMQ, or similar technologies is a plus. Familiarity with infrastructure-as-code tools, advanced Go performance optimization using pprof and trace, and AI-assisted development tools is beneficial. Intermediate English proficiency, with the ability to communicate effectively during regular client interactions. Ability to work as a B2B contractor in the country of current residence. Benefits: Fully remote contract position. B2B contract structure with one contract and one monthly invoice. Rate negotiated according to seniority and client budget. Monthly payment aligned with the client payment schedule, typically within 30 days. Contract governed by the applicable laws of your country of residence. Administrative support for client-side documentation, including MSA, NDA, and invoicing. Opportunity to work on a large-scale mobility and urban services product. Exposure to high-load distributed systems, modern cloud infrastructure, Go, Kubernetes, Redis, and SQL. Opportunity to contribute to architecture, technical standards, observability, and engineering best practices. Collaboration with distributed engineering teams in a product-focused environment.