Senior Full Stack Developer (GoLang + React)

ABOUT OOLIO: Oolio is a leading B2B SaaS platform transforming how hospitality venues operate and grow. Trusted by more than 22,000 venues, we power mission-critical POS, payments, online ordering, kiosks, loyalty, kitchen management, and real-time insights — all within one connected ecosystem.

We are building the operating system for modern hospitality — simplifying complex operations, accelerating service, and unlocking smarter, data-driven decisions. Built by hospitality professionals with decades of industry experience, we understand the realities of every shift, every service rush, and every guest interaction. From cafés and quick-service restaurants to pubs, multi-site groups, and stadiums, Oolio enables venues to operate seamlessly at scale. With next-business-day settlements, powerful third-party integrations, and 24/7 real human support, we go beyond software — we become long-term partners in growth.

As a rapidly scaling product-led organisation, we’re shaping the future of hospitality technology. We build the technology backbone that powers modern hospitality businesses to perform, compete, and thrive at scale.

JOB DESCRIPTION: At Oolio, Full Stack Developers are product builders who take ownership of systems that power mission-critical B2B SaaS platforms. You will design and build end - end highly scalable, resilient, and performance-driven features across frontend and backend layers in a fast-growing, scale-up environment.

You will collaborate closely with Product, Design, and Engineering teams to translate business requirements into elegant, scalable, and reliable solutions—balancing user experience, system performance, and long-term technical excellence.

RESPONSIBILITIES: Own end-to-end feature development—from frontend UI implementation to backend services, deployment, observability, and production reliability. Design and build scalable backend services using Golang and/or Node.js with strong emphasis on performance, concurrency, and maintainability. Develop responsive, performant, and intuitive user interfaces using React.js, ensuring excellent UX across devices and environments. Architect and evolve microservices and event-driven systems using async messaging, queues, pub/sub, and streaming patterns. Build and optimize RESTful, GraphQL, and/or gRPC APIs powering web, mobile, and third-party integrations. Design systems that support offline-first capabilities, ensuring reliable data synchronization and consistency across unreliable networks. Develop cloud-native applications deployed on AWS, leveraging Kubernetes and Docker for containerized infrastructure. Ensure application performance, scalability, and reliability as product usage and customer scale increase. Implement comprehensive testing strategies including unit, integration, UI, contract, and performance testing. Drive observability best practices including structured logging, monitoring, metrics, tracing, and alerting. Participate in code reviews and actively contribute to improving engineering standards, frontend architecture, and backend design patterns. Troubleshoot complex production issues, perform root cause analysis, and implement long-term systemic fixes. Collaborate with cross-functional stakeholders to deliver secure, scalable, and user-centric product solutions.

REQUIREMENTS: Role:

Senior Full Stack Developer -

but final role will depend on candidate experience, credentials and interview outcomes Experience:

5 – 9 Years (strong hands-on full stack engineering experience) Education:

Preferred – B.Tech/B.E/M.Tech/M.E/MCA/M.S Technology Stack:

Golang, React.js (Next.js), Node.js, Microservices, Event-driven Architecture, Distributed Systems, AWS, Kubernetes, Docker, SQL & NoSQL databases, API Design, HLD, LLD, Performance Optimization, Testing Frameworks, RabbitMQ, Kafka, GraphQL, SSR (Server Side Rendering)

Other Requirements: Strong hands-on experience building production-grade full stack systems in SaaS or product-based organisations. Good understanding of frontend architecture including component design, state management, performance optimization, and frontend security best practices. Strong backend fundamentals including API design, concurrency concepts, data modeling, and distributed systems thinking. Decent experience with PostgreSQL and/or DynamoDB including schema design, indexing, and query optimization. Hands-on experience with Kubernetes, container orchestration, and cloud infrastructure (preferably AWS). Experience implementing CI/CD pipelines and DevOps best practices. Good understanding of data consistency models, concurrency control, and fault-tolerant system design. Experience working in high-scale or high-transaction environments (POS, payments, fintech, etc. is a plus, not mandatory).