MERN Stack Developer

Job Overview:

We are seeking a Senior Backend Developer with 5+ years of hands-on experience in Node.js and Python, strong TypeScript knowledge, and advanced skills in AWS cloud services. You will lead backend engineering efforts and provide architectural and client-facing solutions, especially for international clients in the USA, UK, and Australia.

The ideal candidate must be deeply skilled in data structures, object-oriented programming, system design, and authentication standards (OAuth, SAML, etc.). This role also includes team leadership, cloud-native solution architecture, and direct client interaction for translating business requirements into technical deliverables.

Responsibilities:

• Design, build, and maintain scalable backend systems using Node.js (TypeScript) and Python
• Architect and implement cloud-based solutions on AWS and optionally on other cloud providers (GCP/Azure)
• Develop, secure, and integrate APIs (REST, GraphQL, SOAP) and WebSocket services
• Lead the backend development team: code reviews, mentoring, and enforcing engineering best practices
• Work directly with clients from USA, UK, and Australia to gather requirements and present solutions
• Implement authentication and authorization mechanisms (OAuth 2.0, SAML, JWT, custom auth flows)
• Follow design principles and OOP patterns to ensure code scalability and maintainability
• Apply strong understanding of data structures and algorithms to optimize backend performance
• Create and manage infrastructure components such as:
• IAM, EC2, S3, RDS, Lambda, CloudWatch
• SQS, SNS, ElastiCache, Route53, API Gateway
• VPCs, NAT Gateways, Internet Gateways, ALB/NLB
• Use Docker and Kubernetes (EKS preferred) for containerization and orchestration
• Integrate with relational and non-relational databases including MySQL, PostgreSQL, SQL Server, MongoDB, DynamoDB
• Implement search capabilities using Elasticsearch



Required Skills:

Programming & Architecture:

• Strong in Node.js (TypeScript) and Python
• Deep knowledge of data structures, algorithms, and system design
• Expert in object-oriented programming (OOP) and design patterns
• Experience with software architecture and microservices

Authentication & Security:

• Deep understanding of OAuth 2.0, SAML, JWT, API key, and custom authentication mechanisms
• Experience implementing secure, scalable identity & access controls

Cloud Infrastructure (AWS):

• Hands-on with full stack of AWS: IAM, EC2, S3, RDS, Lambda, CloudWatch, SQS, SNS, ElastiCache, VPC, NAT Gateway, ALB/NLB, Route53, API Gateway
• Proficiency with Docker, Kubernetes, and cloud-native CI/CD pipelines

Databases & Search:

• SQL: MySQL, PostgreSQL, SQL Server
• NoSQL: MongoDB, DynamoDB
• Search: Elasticsearch

APIs & Integration:

• REST, GraphQL, SOAP, WebSockets

Soft Skills:

• Excellent English communication (verbal, written, presentation)
• Experience working with international clients (USA, UK, Australia)
• Strong problem-solving and solution architecture skills
• Able to lead a team and deliver client-ready solutions independently

Preferred Qualifications:

• AWS Certified (e.g., Solutions Architect or DevOps Engineer)
• Experience with hybrid or multi-cloud environments
• Exposure to CI/CD tools, monitoring, logging, and performance tuning

What We Offer:

• Global exposure with direct client interaction
• Strong engineering culture with mentorship and learning opportunities
• High-impact projects with modern cloud-native architecture

What we are looking

• You must have experience in Python, including development of microservices using flask/fastapi/sanic.
• You hold knowledge of at least one Python web frameworks
• You have experience in NoSQL databases such as MongoDB
• You are familiar with relational databases and unstructured data.
• You are familiar with some ORM (Object Relational Mapper) libraries.
• You have prior exposure to code versioning tools such as Git.
• You understand fundamental design principles behind a scalable application

Good to have

• Experience in cloud services such as AWS
• Knowledge of user authentication and authorization between multiple systems, servers, and environments
• Understanding of the threading concepts in Python and multi-process architecture

What you'll do

• Create database schemas that represent and support business processes
• Integrate multiple data sources and databases into one system.
• Develop and integrate RESTful APIs and services for business use cases
• Perform unit and integration tests on developed modules

Experience: 6 to 10 Years

Must have:

• Experience in leading teams and handling communication among engineers and product managers,and have worked with mobile teams and product teams.
• Experience working on RFC documentation.
• Experience in architecting the software, estimating tasks, breaking down into subtasks, prioritizing tasks as per need, and timely delivery.

Responsibilities:

• Designing and developing mobile-first applications.
• Creating and maintaining clean and clear front-end code and backend APIs for our web and mobile applications.
• Automation and Deployments of builds - Frontend and Backend.
• Application Performance And Error Monitoring and Automation
• Maintaining excellent test coverage for our code base.
• Follow best practices while reviewing pull requests
• Working with our shared services and field teams to identify application bottlenecks and make relevant architectural decisions.
• Working with our front-end application developers to optimize performance across our system.
• Designing administrative tools for our shared services and business development teams
• Constantly optimizing our code bases with an eye for modularity and legibility.
• Writing documentation for our external and internal APIs.

Requirements:

• Strong understanding of RESTful JSON web API design principles.
• Demonstrable experience with NodeJS, Express. JS, PostgreSQL, MongoDB
• Familiarity with popular NodeJS packages (e. g. express, socket-io).
• Must have experience with test driven development(TDD).
• Experience in JavaScript development.
• Experience in backend web development.
• Containerisation experience working with Docker/ Kubernetes/ Docker Swarm
• Familiarity with multiple additional programming languages/stacks.
• Experience with NoSQL databases, ideally MongoDB.
• Experience with RDBMS databases like MySQL/PostgreSQL.
• An excellent understanding of distributed systems and their tradeoffs.
• Excellent documentation skills.
• Ability to clearly articulate technical problems, design and implementation choices to a broad range of stakeholders (e. g. sales team, users, security experts).
• Experience working with web sockets.
• Familiarity with the AWS stack.
• Experience in application security testing.
• Familiarity with client-side JavaScript frameworks and best practices.
• Familiarity with CI/CD Pipeline.
• Contributions to open source communities.

Perks and Benefits

• Work from anywhere
• Competitive salary and bonus program
• Annual company retreats to fantastic places
• Unlimited Vacation Policy
• Great healthcare coverage
• Professional development allowance
• Internet Allowance
• Customised CMMversary rewards on your 1,3,5,7 and 10-year work anniversaries
• Career Enablement – We meld your upskilling initiatives with organization’s strategic planning
• Take your Birthday Off

Node.js Developer Responsibilities:

• Developing and maintaining all server-side network components.
• Ensuring optimal performance of the central database and responsiveness to front-end requests.
• Collaborating with front-end developers on the integration of elements.
• Designing customer-facing UI and back-end services for various business processes.
• Developing high-performance applications by writing testable, reusable, and efficient code.
• Implementing effective security protocols, data protection measures, and storage solutions.
• Running diagnostic tests, repairing defects, and providing technical support.
• Documenting Node.js processes, including database schemas, as well as preparing reports.
• Recommending and implementing improvements to processes and technologies.
• Keeping informed of advancements in the field of Node.js development.

Node.js Developer Requirements:

• Bachelor's degree in computer science, information science, or similar.
• At least 4 years' experience as a Node.js developer.
• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
• Knowledge of front-end technologies such as HTML5 and CSS3.
• Superb interpersonal, communication, and collaboration skills.
• Exceptional analytical and problem-solving aptitude.
• Great organizational and time management skills.
• Availability to resolve urgent web application issues outside of business hours.

Node.js and frameworks available for it - Express, StrongLoop, etc
Understanding the nature of asynchronous programming and its quirks and workarounds
Integration of user-facing elements developed by front-end developers

front-end technologies - HTML5, and CSS3
Writing scalable, reusable, testable, and efficient code