Senior Backend Engineer (AWS, Java/Spring Boot, Python & Node.Js)Location: Bangalore [Hybrid]Experience: 10+ yearsAbout the RoleZeno 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 doArchitect, 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 (FastAPI/Flask), and Node.Js (Express)Own the design of the wallet/ledger subsystem — wallet balances, holds, and ledger entries — ensuring idempotent, auditable financial transaction processingDesign and scale ingestion pipelines that process high-volume vehicle and swap-station telemetry (UDP messages) into ClickHouse, including materialized views, hourly/daily rollups, and TTL-based data lifecycle policiesArchitect and manage deployment infrastructure on AWS (ECS, RDS, SQS, SNS, S3, Secrets Manager, IAM, CloudWatch, 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 costsDefine API contracts, service boundaries, and event-driven communication patterns (SQS/SNS) across microservicesDesign and review database schemas (PostgreSQL/RDS) for core domains — customers, vehicles, fleet partners, battery packs, swap stations, tariffs, and dashboard identity/RBACEstablish and maintain CI/CD pipelines (GitHub Actions, ECR) and infrastructure best practicesLead incident response and root-cause analysis, including design of dead-letter queue (DLQ)



handling for failed or incomplete transaction processingMentor mid-level and junior engineers, lead code reviews, and set backend engineering standardsCollaborate with product, frontend (Next.Js dashboard), and DevOps teams to translate business requirements into scalable technical designsOwn the performance, security and reliability of production services at scaleWhat you have10+ years of experience in backend software engineering, with a proven track record of designing and operating production systems at scaleStrong hands-on expertise in Java and Spring Boot for building production microservicesProficiency in Python and/or Node.Js for backend service developmentDeep experience with AWS cloud services — ECS, RDS, SQS, SNS, S3, IAM, CloudWatch, Secrets ManagerStrong understanding of relational databases (PostgreSQL) and time-series/columnar databases (ClickHouse or similar)Experience designing event-driven and message-queue-based architecturesSolid understanding of financial/ledger system design, idempotency, and transactional integrityExperience with containerization and orchestration (Docker, ECS/Kubernetes)Strong grasp of system design, scalability, and distributed systems principlesExperience with CI/CD pipelines and DevOps practices (GitHub Actions or similar)Excellent communication skills and experience mentoring engineering teamsNice to HaveExperience in IoT/telemetry-heavy domains (vehicle, industrial, or connected-device platforms)Familiarity with Redis for caching or low-latency data servingExperience with API gateways/service mesh (Envoy Proxy)Exposure to payment gateway integrations and wallet/ledger systemsAWS Solutions Architect Skilled certification (or equivalent)Experience in EV, mobility, or fleet management domainsWhat You'll GainOwnership of core backend architecture for a fast-growing EV mobility platformOpportunity to shape technical direction and mentor a growing engineering teamWork on complex, real-world distributed systems at scale — telemetry, payments, and fleet managementCompetitive compensation and leadership growth opportunities

📌 Back End Developer (Bengaluru)
🏢 Zeno
📍 Bengaluru