Senior Backend Engineer (AWS, Java/Spring Boot, Python & Node.js)

Location: Bangalore [Hybrid]

Experience: 10+ years

About the Role

Zeno is building the backend platform that powers our EV battery-swapping ecosystem — covering vehicle telemetry, swap station orchestration, wallet & payment transactions, fleet partner management, and dashboard identity/RBAC. We're looking for a Senior Backend Engineer to own the architecture and lead development of our core microservices, deployed on AWS, using Java/Spring Boot, Python, and Node.js.

What you'll do

Architect, design, and lead development of core backend microservices — Vehicle Service, Swap Station Service, Transaction Management Service, and Wallet Management Service — using Java/Spring Boot, Python (Quick API/Flask), and Node.js (Express) Own the design of the wallet/ledger subsystem — wallet balances, holds, and ledger entries — ensuring idempotent, auditable financial transaction processing Design and scale ingestion pipelines that process high-volume vehicle and swap-station telemetry (UDP messages) into Click House, including materialized views, hourly/daily rollups, and TTL-based data lifecycle policies Architect and manage deployment infrastructure on AWS (ECS, RDS, SQS, SNS, S3, Secrets Manager, IAM, Cloud Watch, WAF, Route 53) Drive the use of Redis for low-latency live data serving, including optimizing placement within the VPC to reduce cross-AZ/network data transfer costs Define API contracts, service boundaries, and event-driven communication patterns (SQS/SNS) across microservices Design and review database schemas (Postgre SQL/RDS) for core domains — customers, vehicles, fleet partners, battery packs, swap stations, tariffs, and dashboard identity/RBAC Establish and maintain CI/CD pipelines (Git Hub Actions, ECR) and infrastructure best practices Lead incident response and root-cause analysis, including design of dead-letter queue (DLQ)



handling for failed or incomplete transaction processing Mentor mid-level and junior engineers, lead code reviews, and set backend engineering standards Collaborate with product, frontend (Next.js dashboard), and Dev Ops teams to translate business requirements into scalable technical designs Own the performance, security and reliability of production services at scale What you have

10+ years of experience in backend software engineering, with a proven track record of designing and operating production systems at scale Strong hands-on expertise in Java and Spring Boot for building production microservices Proficiency in Python and/or Node.js for backend service development Deep experience with AWS cloud services — ECS, RDS, SQS, SNS, S3, IAM, Cloud Watch, Secrets Manager Strong understanding of relational databases (Postgre SQL) and time-series/columnar databases (Click House or similar) Experience designing event-driven and message-queue-based architectures Solid understanding of financial/ledger system design, idempotency, and transactional integrity Experience with containerization and orchestration (Docker, ECS/Kubernetes) Strong grasp of system design, scalability, and distributed systems principles Experience with CI/CD pipelines and Dev Ops practices (Git Hub Actions or similar) Excellent communication skills and experience mentoring engineering teams Nice to Have

Experience in Io T/telemetry-heavy domains (vehicle, industrial, or connected-device platforms) Familiarity with Redis for caching or low-latency data serving Experience with API gateways/service mesh (Envoy Proxy) Exposure to payment gateway integrations and wallet/ledger systems AWS Solutions Architect Professional certification (or equivalent) Experience in EV, mobility, or fleet management domains What You'll Gain

Ownership of core backend architecture for a fast-growing EV mobility platform Opportunity to shape technical direction and mentor a growing engineering team Work on complex, real-world distributed systems at scale — telemetry, payments, and fleet management Competitive compensation and leadership growth opportunities

📌 Back End Developer (Bengaluru)
🏢 Zeno
📍 Bengaluru