Senior Java Backend Engineer

Category: Technology Location: We're looking for a Senior Backend Engineer with deep expertise in Java to build resilient, high-throughput, low-latency distributed systems capable of handling tens of thousands of concurrent requests. You'll own end-to-end supplier integrations, working directly with external suppliers to implement REST API and webhooks integrations.The role requires strong product intuition and a deep understanding of the full passenger lifecycle, from bookings and order creation to modifications and cancellations, as well as how these workflows operate reliably across a multi-tenant platform. - Own the supplier integrations process from gathering requirements and API design through production deployment and ongoing partner relationships. - Integrate with supplier APIs (RESTful/webhooks) by implementing secure, reliable connections that handle authentication, rate limiting, retries, and complex error scenarios. - Build event-driven microservices that process high-volume transactions with strict latency requirements across a multi-tenant architecture. - Deploy and operate production services on AWS with monitoring and observability, maintaining 99.99% uptime SLA. Requirements - 5+ years backend engineering experience with ownership of production systems serving at least 10,000+ daily active users. - Ability to gather requirements from suppliers, analyse integration specifications, and communicate effectively with key stakeholders throughout the integration lifecycle. - Expert in Java, with extensive experience writing concurrent, multithreading, and asynchronous code for high-performance systems. - Deep expertise with Spring ecosystem (Spring Boot/Data/Security), building scalable APIs and microservices. - Proven ability to integrate and operate RESTful APIs with third-party suppliers, handling authentication, rate limiting, and error scenarios. - Strong understanding of distributed systems: event-driven patterns, messaging brokers (eg. RabbitMQ, Kafka, AWS SQS/SNS), and resilient design (idempotency, circuit breakers). - Proven experience with both SQL (Postgres/MySQL) and NoSQL (MongoDB), knowing when to use each technology. - Skilled in AWS infrastructure, Docker, CI/CD, infrastructure as code, and production monitoring. - Mentor team members when required through code reviews and architectural guidance while communicating technical decisions to stakeholders. Benefits - Above-market base salary (location-adjusted) + meaningful equity (3-year vesting schedule). - Fully remote. - Travel perks, events, and hands-on access to Arcube’s ancillary products including lounges, eSIMs, car rentals, and more. - Early-stage well-funded startup with real ownership and impact on the company's success. Details Originally posted on Himalayas