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 (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 processing
Design 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 policies
Architect 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 costs
Define API contracts, service boundaries, and event-driven communication patterns (SQS/SNS) across microservices
Design and review database schemas (PostgreSQL/RDS) for core domains — customers, vehicles, fleet partners, battery packs, swap stations, tariffs, and dashboard identity/RBAC
Establish and maintain CI/CD pipelines (GitHub 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 DevOps 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, CloudWatch, Secrets Manager
Strong understanding of relational databases (PostgreSQL) and time-series/columnar databases ( ClickHouse 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)
Robust grasp of system design, scalability, and distributed systems principles
Experience with CI/CD pipelines and DevOps practices (GitHub Actions or similar)
Excellent communication skills and experience mentoring engineering teams

Nice to Have
Experience in IoT/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