SDE - III (Backend) Department: Global Analytics and Technology Employment Type: Permanent - Full Time Location: India Description Job location: Gurgaon/Mumbai/Remote About the role: Our backend systems process millions of transactions, serve enterprise customers across industries, and must perform flawlessly under pressure. We are scaling fast — and the decisions made at the architecture level today will define how the platform operates for years. We are hiring a Lead Backend Engineer to own that responsibility. This is a technical leadership role with real weight. You will set the architectural direction for core backend services, resolve ambiguity in complex distributed systems, engage directly with Product and DevOps leadership as a peer, not a downstream implementer and be the person the team turns to when things go wrong in production. Your decisions will have a measurable impact on system reliability, engineering velocity, and the careers of the engineers you mentor. We are looking for an engineer who has operated at this level before — someone who understands that senior engineering skill and technical leadership are not the same thing, and who is ready to take on both with full ownership. What you will be expected to do The key responsibilities of the role will be as follows Own backend features end-to-end: requirements, design, implementation, testing, and production rollout Produce technical design documents for assigned features; present and defend them in design reviews Write production-quality Java and Spring Boot code that meets the team’s standards for performance, maintainability, and test coverage Identify and address edge cases, failure modes, and scalability constraints at the design stage — not after the fact Deliver features on schedule with a consistent track record of quality and low post-release defect rates Build and maintain microservices with a focus on reliability, scalability, and clean service boundaries Design and optimise interactions with PostgreSQL and MongoDB; write performant queries and schema migrations Implement Kafka-based event-driven workflows: consume, produce, and handle failure scenarios correctly Use Elasticsearch for search features; understand indexing, mapping, and query construction Instrument services with appropriate logging, metrics, and alerting from day one Participate in on-call rotations and respond to production incidents with urgency and structure Conduct root cause analysis on incidents related to your features and drive preventive improvements Proactively monitor system health; surface degradation or risk to the Lead Engineer before it becomes an incident Contribute to operational runbooks, post-mortems, and reliability improvement initiatives Conduct thorough, constructive code reviews for junior engineers; elevate review quality on the team Mentor junior engineers on technical approach, debugging discipline, and engineering best practices Collaborate closely with the Lead Engineer on architecture decisions; contribute well-reasoned technical opinions Partner with QA, DevOps, and Product to ensure features are delivered with full operational readiness You might be a strong candidate if you have/are Bachelor’s degree in Computer Science, Engineering, or equivalent experience. 5+ years of experience building and maintaining backend systems in production environments. Strong proficiency in Java with hands-on experience in Spring Boot–based microservices. Solid understanding of data structures, algorithms, and backend problem solving. Strong experience with PostgreSQL or other relational databases in high-scale systems. Experience building and consuming RESTful APIs and working with asynchronous systems. Strong debugging and troubleshooting skills in live production systems. Good understanding of software engineering best practices, including testing, code reviews, CI/CD, and release management. Clear communication skills and ability to collaborate effectively within a team. Hands-on experience with Kafka or similar messaging/event-streaming platforms. Exposure to distributed systems, microservices architecture, and scaling strategies. Experience with Docker and Kubernetes in production environments Cloud platform experience (AWS, Azure, or GCP) Caching with Redis: cache-aside, TTL strategies, cache invalidation patterns Resilience engineering: Circuit Breaker, Bulkhead, Retry, Rate Limiting patterns Great to have: Experience using Redis, Elasticsearch, and MongoDB in production systems. Exposure to SRE or platform engineering practices Experience contributing to or leading engineering hiring processes What Sun King offers Professional growth in a dynamic, rapidly expanding, high-social-impact industry An open-minded, collaborative culture made up of enthusiastic colleagues who are driven by the challenge of innovation towards profound impact on people and the planet. A truly multicultural experience: you will have the chance to work with and learn from people from different geographies, nationalities, and backgrounds. Structured, tailored learning and development programs that help you become a better leader, manager, and professional through the Sun King Center for Leadership.