44,671 Back End Developer jobs in India

Back End Developer:

Exp: 6-8 yrs

Location: Bangalore

Skills:

1) Graduate with 6-8 years of experience working as a Backend Developer NodeJs, AWS

2) Excellent knowledge on PythonPySpark, Node.js and AWS services – Serverless Arch - Lambdas, DynamoDB, S3, SNS, SQS, RDS

Designation: Back-end Engineer — NestJS / TypeScript (1–3 yrs)

Job Location: Permanent Work from Home (The office location is in Bangalore, but Permanent Work from Home is being provided to all employees. Candidates anywhere in India can apply.)

Experience: 1 - 3 years

Notice period: Immediate joiner or a maximum of 30 days

Role summary:

Own APIs, integrations, and background jobs powering OPTIMAS’s portals. You’ll build services in NestJS + TypeScript with Postgres (Prisma) , Redis (BullMQ) , and S3/R2 , integrate SSO and third-party vendors, and keep the system observable and secure.

What you’ll do:

• Build NestJS services (REST/GraphQL), modules, guards, interceptors; generate OpenAPI .
• Model data in Postgres (Prisma); implement caching and BullMQ workers in Redis .
• Implement SSO (OIDC with Okta/Azure AD) , RBAC, audit logs, rate-limits.
• Integrate vendor systems & webhooks : Disprz (LMS) , ticketing (e.g., Zendesk/Freshdesk), CRM, ERP (NetSuite).
• Implement exports (PDF/XLS), notifications, and secure file pipelines (pre-signed S3/R2).
• Add observability (logs/metrics/traces), error handling, and idempotency.
• Collaborate with FE/mobile; maintain API contracts in a monorepo package.

Must-have skills

• 1–3 years with Node.js + TypeScript ; hands-on NestJS (modules/guards).
• SQL schema design; Prisma /TypeORM; performance/query basics.
• Redis for cache/queues; BullMQ workers; job retries/backoff.
• Secure file handling (pre-signed URLs), pagination, validation, error shapes.
• AuthN/AuthZ concepts: OIDC/JWT/opaque tokens, role/permission checks.
• Good Git/GitHub hygiene, testing mindset, readable docs.

Nice-to-haves

• Fastify adapter, OpenTelemetry, structured logging.
• Vector/full-text search (pgvector/OpenSearch ).
• PDF generation (Puppeteer) and Excel exports.
• Basic security (OWASP, rate-limits, input sanitization).

About Posium

Posium is an AI startup developing state-of-the-art AI agents that automate end-to-end software testing. We are backed by top global investors, including Sequoia, and our team comprises talented individuals from Georgia Tech, IIT, Uber, and Microsoft. We operate as a fully distributed organization built around a high-performance culture and an inclusive, collaborative team.

Location - Bangalore

Experience - 3 to 5 years

We are looking for a Senior Software Engineer - Backend. We are looking for engineers who work like owners as you will be tasked with leading the development of one of our 5 major components of the Posium platform. You will work with experienced engineers on a modern serverless stack built using Javascript (React and Node) and Golang with an in-house real-time data analytics engine on Postgres and Elasticsearch among others.

Responsibilities

· Develop new features and enhance existing features.

· Design, code and manage automated test scripts, continuous builds and deployment. At Posium, you are responsible for testing the features you develop.

· Self-document development processes.

· Help your fellow DevOps and junior engineers working on our cloud infrastructure and other product components to ensure code quality and robust architecture.

Requirements and Qualifications

· BE/BTech in Computer Science and Engineering

· Experience with backend development (at least 3 years)

· Hands-on experience with Go/Java/Node

· Understanding of GraphQL

· Understanding of AWS and cloud-native technologies is preferred

· Strong problem-solving, service architecture, and coding skills

About the Role

We’re looking for a Senior Backend Engineer with deep expertise in Golang , and experience in Ruby , to help us build and scale reliable, high-performance backend systems. As a key member of our engineering team, you’ll contribute to the architecture, development, and operations of mission-critical services that support our platform. You’ll be part of a collaborative environment where clean code, solid engineering practices, and strong computer science fundamentals are deeply valued. You’ll be be building an open financial system that brings the world together.

Responsibilities:

• Design, build, and maintain scalable backend services and APIs using Golang
• Ruby or Ruby on Rails experience is a plus.
• Contribute to the architecture and evolution of our service-oriented / microservices backend.
• Write clean, testable, and efficient code with a strong emphasis on quality.
• Collaborate with product managers, frontend engineers, and other stakeholders to deliver high-impact features.
• Improve performance, monitoring, and observability of backend services.
• Participate in design discussions, code reviews, and technical planning.
• Troubleshoot and resolve production issues with a focus on reliability and root-cause analysis.

Qualifications:

• 5+ years of software engineering experience, preferably in high-scale backend systems.
• Strong proficiency in Golang is required with Ruby or Ruby on Rails experience .
• Solid foundation in computer science fundamentals — algorithms, data structures, and system design.
• Proven experience building and scaling distributed systems , APIs, or backend platforms in a production environment.
• Familiarity with DevOps practices , monitoring tools , and cloud infrastructure (e.g., AWS, GCP, Docker, Kubernetes) is a bonus.
• Comfortable working in a fast-paced, agile environment with a collaborative mindset.
• Strong problem-solving skills and a passion for building high-quality software.

Our company:

A fast-growing start-up headquartered in San Francisco, CA, USA in the heart of Silicon Valley. We recruit worldwide as our customer base is global. All employees outside San Francisco headquarter work remotely.

Elife is a Startup developing innovative technology in the passenger transport industry, providing any type of ground transportation worldwide, including Group/event transportation, NEMT transportation, senior and disability transportation, pet relocation, bilingual driver for non-English speak clients.

Our market is the world. Our customers are everywhere. Our platform and apps are built on the cloud. We have endless exciting problems to solve and we only use the best and latest technology.

Vision: Reliable ground transportation services globally with all types of vehicles.

Mission: Empower high-quality local fleets.

Job Title: Senior Backend Python Developer

Responsibilities:

• Design, develop, and maintain backend applications for customers worldwide.
• Collaborate with cross-functional teams, including frontend, backend, testing, and application design, to deliver integrated solutions.
• Build and optimize Python/MySQL backends hosted on Amazon Web Services (AWS).
• Enhance, maintain, and troubleshoot existing software applications to ensure performance and reliability.
• Write clean, highly scalable, and testable code following best practices.
• Identify, analyze, and resolve programming bugs and performance bottlenecks.
• Contribute to technical documentation and knowledge sharing across the team.

What We’re Looking For:

• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
• 5+ years of experience in backend development, particularly with web and mobile applications.
• Strong expertise in Python and MySQL, with proven experience building scalable applications.
• Hands-on experience with AWS cloud services.
• Solid understanding of software development lifecycle (SDLC), version control, and CI/CD practices.
• Strong analytical and problem-solving skills with attention to detail.
• Ability to manage time effectively and deliver in a fast-paced, global environment.
• A proactive, can-do attitude and the ability to learn quickly.
• Strong teamwork and communication skills, with a collaborative mindset.
• Understanding of ML fundamentals, Building APIs/services to serve ML models

Our Apps

• Single-page web app running on both PC and mobile devices.
• Python/MySQL backend hosted on Amazon Web Services.
• Our customers and markets are worldwide in North America, South America, Asia, Europe, and Africa.

Back-end developer

Lead the server-side development that powers our web, iOS, and Android apps. You will design secure, scalable APIs, manage data, integrate payments, and support real-time features across e-commerce, social, trivia/gaming, and AI-driven products.

Key Responsibilities

1. API & Microservice Development

• Build and maintain REST (and optional GraphQL) endpoints in Node.js (Express or NestJS).
• Write Firebase Cloud Functions for real-time logic when appropriate.

1. Data & Security

• Design schemas in Firestore / SQL / NoSQL as required.
• Implement authentication, authorization, and role-based access.
• Ensure data privacy, rate limiting, and secure payment handling.

1. Payment & External Integrations

• Integrate payment gateways for one-time, subscription, and coupon flows.
• Connect to third-party AI services (chat, vision, etc.) and other external APIs.

1. Deployment & Monitoring

• Automate CI/CD, use Docker or cloud builds, deploy to Firebase, GCP, AWS, or comparable.
• Set up logging, alerting, and performance monitoring.

1. Collaboration & Release Support

• Work closely with React and Flutter engineers to define contracts and return structures.
• Participate in app release cycles, ensuring backend readiness and versioning.
• Organise tasks and documentation in Notion ; attend stand-ups and code reviews.

Required Skills & Experience

• 5+ years building production back-end systems with Node.js .
• Solid experience with Firebase (Auth, Firestore, Cloud Functions) or equivalent serverless stacks.
• Strong database design skills (document, relational, and caching strategies).
• Proven payment-integration experience (checkout, subscriptions, refunds).
• Deep understanding of RESTful principles, web security, and scalability patterns.
• Experience deploying and operating services in a public cloud environment.
• Familiar with CI/CD pipelines, Git workflows, and automated testing.
• Fluent English communication; comfortable documenting in Notion and explaining architecture to the team.