Fullstack Developer (Golang & React)

Senior Fullstack Engineer — Job Requirements

Requirements:

• Minimum 5+ years of professional experience as a Fullstack Engineer / Software Engineer.
• Strong hands-on experience with Go (Golang) for developing and maintaining production-grade backend services and microservices.
• Strong proficiency in TypeScript and React / React Native for frontend and cross-platform application development.
• Solid experience with REST APIs, gRPC, and Protocol Buffers for service-to-service communication.
• Strong experience with PostgreSQL and MongoDB , including database design, indexing, query optimization, and performance tuning.
• Good understanding of SQL query analysis, EXPLAIN plans, N+1 query elimination, batching, and database performance optimization .
• Hands-on experience with Redis , including caching strategies, TTL, deduplication, and high-traffic data access patterns.
• Experience designing and implementing transactional systems , particularly order, payment, fulfilment, inventory, or other high-throughput business processes.
• Strong understanding of asynchronous processing, retries, idempotency, and event-driven architecture .
• Experience integrating third-party services and payment or delivery aggregator APIs .
• Experience developing offline-first applications , including local data storage, store-and-forward synchronization, and conflict resolution, is highly preferred.
• Familiarity with RabbitMQ or other message brokers and event-driven processing is a plus.
• Experience with Docker, Kubernetes, and CI/CD pipelines such as GitLab CI.
• Familiarity with observability and monitoring tools , such as OpenTelemetry and Prometheus, is a plus.
• Experience with SQLite or embedded databases and offline POS/edge applications is a plus.
• Familiarity with React Native + Expo and Electron-based desktop applications is a plus.
• Experience in F&B, QSR, POS, retail, ERP, or other transactional business systems is highly preferred.
• Strong understanding of clean architecture / hexagonal architecture and ability to work effectively within an existing complex codebase.
• Able to work independently with minimal onboarding and take ownership of end-to-end feature delivery.
• Strong experience with Git, code review, debugging, testing, and Agile/Scrum development practices .
• Comfortable working with AI-assisted development tools , such as Claude Code or similar AI coding agents, including effective prompting and critically reviewing AI-generated code.

Nice to Have

• Experience with QSR, F&B, retail, POS, or ERP platforms .
• Experience implementing offline-first / edge computing patterns , including Outbox, Store-and-Forward, and conflict resolution.
• Experience with payment gateway and delivery aggregator integrations .
• Experience with RabbitMQ or similar messaging systems.
• Experience with React Native, Expo, and Electron .
• Experience with OpenTelemetry, Prometheus, Kubernetes, and continuous profiling .
• Hands-on experience using Claude Code or other agentic AI development tools in day-to-day engineering workflows.

Key Responsibilities

• Design, develop, and maintain end-to-end features across Go backend services and cross-platform POS clients.
• Build reliable transactional workflows covering ordering, payment, fulfilment, and inventory .
• Develop offline-first POS capabilities , including local-first data, synchronization, and conflict handling.
• Integrate third-party, payment, and delivery services using reliable integration patterns.
• Optimize application performance through database tuning, caching, query optimization, and endpoint hardening .
• Contribute to master data, inventory, reporting, and ERP-level capabilities .
• Develop and maintain automated tests, including unit, integration, and E2E testing .
• Participate in code reviews, technical discussions, and sprint-based delivery .
• Work independently within a complex production codebase and deliver solutions with minimal supervision.