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