Backed Engineer

Soul Ai; Mumbai; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

Soul Ai in Mumbai seeks a Backend Engineer to architect and build scalable, secure APIs and services. You will work with frontend, DevOps, and product teams to deliver high-impact backend systems that power core features across our platform.

The ideal candidate has deep experience with backend frameworks, databases, API design, and cloud infrastructure, and knows how to build reliable systems that scale.

Qualifications

• Proficiency in one or more backend languages: Node.js, Python, Java, or Go.
• Experience with backend frameworks such as Express/NestJS, Django/FastAPI, Spring Boot, or Gin/Fiber.
• Strong understanding of relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) databases.
• Expertise in API design, including REST, GraphQL, pagination, versioning, and error handling.
• Familiarity with authentication protocols (JWT, OAuth2, sessions).
• Solid security practices including XSS, CSRF, SQL injection, secure password handling.
• Experience with Docker for containerization and deploying microservices.
• Understanding of caching (Redis, CDN), background processing (BullMQ/Celery), and job queues.

Responsibilities

• Design, build, and maintain robust, scalable RESTful or GraphQL APIs.
• Architect systems with clear data models and clean separation of concerns.
• Optimize database performance through indexing, query tuning, and caching strategies.
• Implement security best practices including authentication, authorization, rate limiting, and input validation.
• Write unit, integration, and end-to-end tests for reliability.
• Deploy, monitor, and maintain services using CI/CD pipelines and observability tools.
• Collaborate with frontend, DevOps, and product teams to ship high-quality features quickly.
• Troubleshoot performance bottlenecks, memory leaks, and outages in production.

Skills

Node.js

Python

Java

Go

Express/NestJS

Django/FastAPI

Spring Boot

Gin/Fiber

PostgreSQL

MySQL

MongoDB

Redis

API design (REST/GraphQL)

Pagination, versioning, error handling

JWT/OAuth2/session management

XSS/CSRF/SQL Injection security

Docker

Caching (Redis/CDN)

BullMQ/Celery

Git workflows

CI/CD (GitHub Actions/Jenkins/GitLab)

AWS/GCP/Azure

Kubernetes

Prometheus/Grafana/ELK/Datadog/Sentry

Kafka/RabbitMQ/pub-sub

WebSockets/Socket.io/Server-Sent-Event

Serverless (AWS Lambda/GCP Functions)

ETL pipelines

GenAI/ML inference integration

Education

Bachelor's or Master's in Computer Science, Software Engineering, or related technical discipline

Tools

Docker

Git

Job description

Role Overview:.

• We are looking for a Backend Engineer who can architect and build scalable, performant, and secure APIs and services.
• Youll work closely with frontend, DevOps, and product teams to deliver high-impact backend systems that power critical features across our platform.
• The ideal candidate has deep experience with backend frameworks, databases, API design, and cloud infrastructure \" and knows how to build reliable systems that scale.

Responsibilities.

• Design, build, and maintain robust, scalable RESTful or GraphQL APIs.
• Architect systems with clear data models and clean separation of concerns.
• Optimize database performance through effective indexing, query tuning, and caching strategies.
• Implement security best practices including authentication, authorization, rate limiting, and input validation.
• Write unit, integration, and end-to-end tests to ensure system correctness and reliability.
• Deploy, monitor, and maintain services in staging and production environments using CI/CD pipelines and observability tools.
• Collaborate with cross-functional teams including frontend, DevOps, and product to ship high-quality features fast.
• Troubleshoot performance bottlenecks, memory leaks, and outages in production environments.

Required Skills:

• Proficiency in one or more backend languagesNode.js (JavaScript/TypeScript), Python, Java, or Go.
• Experience with backend frameworks like Express/NestJS, Django/FastAPI, Spring Boot, or Gin/Fiber.
• Strong understanding of relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) databases.
• Expertise in API design, including REST, GraphQL, pagination, versioning, and error handling.
• Familiarity with authentication protocolsJWT, OAuth2, session handling.
• Solid grasp of security principlesXSS, CSRF, SQL Injection, secure password handling.
• Experience with Docker for containerization and deploying microservices.
• Understanding of caching (Redis, CDN), background processing (e.g., BullMQ, Celery), and job queues.
• Working knowledge of Git workflows and code review practices.
• Comfortable with CI/CD pipelines and automated deployments using tools like GitHub Actions, Jenkins, or GitLab CI.

Nice to Have.

• Experience with cloud platformsAWS (EC2, S3, RDS, Lambda), GCP, or Azure.
• Familiarity with Kubernetes or container orchestration for service scaling.
• Hands-on with monitoring/logging toolsPrometheus, Grafana, ELK stack, Datadog, Sentry.
• Experience building event-driven architectures using Kafka, RabbitMQ, or pub-sub systems.
• Exposure to real-time systems using WebSockets, Socket.io, or Server-Sent Events.
• Prior work on serverless architectures using AWS Lambda or GCP Functions.
• Basic experience working with ETL pipelines or streaming data.
• Integration experience with GenAI/ML inference layers is a plus.
• Educational Qualifications:
• Bachelors or Masters degree in Computer Science, Software Engineering, or a related technical discipline.
• Equivalent practical experience or contributions to open-source backend projects are also considered.