MERN Full Stack Developer

Role Overview

We are looking for a hands-on engineering leader who can own technical design and drive end-to-end development of scalable, high-quality systems. This role requires strong architectural depth, coding excellence, and the ability to mentor engineers while building production-grade applications in a fast-paced agile environment.

You will lead by example — designing systems, writing clean code, solving complex problems, and ensuring engineering best practices across the stack.

Key Responsibilities

• Lead technical design and architecture discussions (HLD & LLD).
• Build scalable, modular, and testable systems with strong engineering fundamentals.
• Own complex features end-to-end — design, development, testing, and optimization.
• Write high-quality, production-ready code with strong unit test coverage.
• Ensure clean code practices (SOLID principles, modular design, reusability).
• Drive engineering quality within CI/CD environments.
• Debug and resolve complex issues across distributed systems and APIs.
• Mentor engineers and elevate overall code quality standards.
• Collaborate effectively within agile teams and move with delivery velocity.

Core Technical Requirements

• 8+ years of hands-on software development experience.
• Strong proficiency in:
• Java
• Node.js
• Angular (6+)
• JavaScript / TypeScript
• SQL & MongoDB
• Deep understanding of system design, architecture patterns, and scalable application development.
• Strong debugging capabilities across:
• Distributed services
• API integrations
• UI state management
• Database query performance
• Experience working in CI/CD-driven engineering environments.

GenAI & AI Stack Expertise

• Hands-on experience with GenAI frameworks and LLM integrations.
• Familiarity with:
• LangChain ecosystem
• Hugging Face
• Prompt chaining & orchestration
• Understanding of AI cost optimization strategies.
• Ability to debug AI pipelines and optimize model interactions.

Engineering Expectations

• Strong ownership mindset.
• Ability to design independently and lead technical direction.
• Exceptional problem-solving and debugging skills.
• High attention to detail.
• Comfortable working in fast-paced agile/scrum setups.
• Strong communication and collaboration skills.
• Ability to mentor and guide other engineers.

Educational Qualification

• Bachelor’s degree in Computer Science / Engineering / related field
• or
• Master’s degree in Computer Science / Computer Applications

About Us

21 Knots is a design, engineering, and consulting firm providing services to the global maritime and oil & gas industry. In an industry constantly evolving due to dynamic regulations, economic fluctuations, and climate change mandates, we strive to deliver cutting-edge solutions with an unwavering commitment to excellence. Our comprehensive services are designed to create value for our esteemed clients while enabling them to achieve their business goals.

The Role

We’re looking for a skilled and motivated Software Developer to join our team at 21 Knots. Someone with backend development with a working knowledge of frontend technologies. The ideal candidate will have a strong command of backend frameworks such as Django, FastAPI, or Flask, and familiarity with frontend tools like HTML, CSS, JavaScript, and optionally React, Angular, or Vue. You will play a key role in building, maintaining, and optimizing scalable software solutions while collaborating with a team

Responsibilities

• Develop,test, and maintain backend services using Django, FastAPI, or Flask.
• Design and implement RESTful APIs for web and internal tools.
• Work with relational and non-relational databases such as PostgreSQL, MySQL, or MongoDB.
• Optimize application performance and implement backend security best practices.
• Collaborate with frontend developers, designers, and cross-functional teams to deliver high-quality solutions.
• Write clean, maintainable, and well-documented code.
• Support basic frontend development tasks using HTML, CSS, and JavaScript.
• Work with modern frontend frameworks like React.js, Angular, or Vue (good to have).

What You’ll Need

Experience:

• 1–4 years of hands-on experience in backend development.
• Exposure to full-stack development environments.
• Experience working with RESTful APIs, databases, and cloud integration is a plus.

Education:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.

Tools & Software Proficiency:

• Proficiency in Django, FastAPI, or Flask.
• Familiarity with PostgreSQL, MySQL, or MongoDB.
• Basic knowledge of frontend technologies: HTML, CSS, JavaScript.
• Exposure to Bootstrap or Tailwind CSS for responsive UI design.
• Good to have: experience with React, Angular, or Vue.
• Familiarity with cloud platforms (AWS, Azure, or GCP) and Agile/Scrum methodologies is an added advantage.

Skills & Competencies:

• Strong problem-solving and debugging skills.
• Understanding of RESTful architecture and secure coding practices.
• Ability to collaborate in a cross-functional environment.
• Good verbal and written communication skills.

1. Responsibilities 

   • • Collaborate with the core team building a state-of-the-art blockchain based SaaS. 
   • • Building front-end web applications using latest technologies. 
   • • Suggest and ideate high- and low-level design and architecture requirements for implementation of features. 
   • • Apply comprehensive knowledge and a thorough understanding of concepts, principles, and technical capabilities to perform varied tasks and projects. 
   • • Backend RESTful API Design and server-side development for web and mobile apps. 
   • • Develop and design database schemas on MongoDB. 
   • • Perform code reviews and unit tests to ensure code consistency and maintainability. 
   • • Setup alerts, monitoring & metrics, provision and manage resources on AWS Cloud. 

    

   Minimum Qualifications 

   • • Passion to solve complex problems of agriculture in a dynamic start-up environment 
   • • Flexible, curious, exploratory, and can-do attitude 
   • • Great sense of ownership and ability to work with very limited supervision 
   • • Bachelor's degree in Computer Science, related technical field, or equivalent practical experience. 
   • • 2-5 years of hands-on coding expertise in software engineering. 
   • • Experience with JavaScript, HTML, CSS. 
   • • Ability to speak English fluently. 

    

   Preferred Qualifications 

   • • Strong programming experience of 2+ years with Node.js, Express.js, MongoDB and Angular stack. 
   • • Strong problem solving/troubleshooting skills. 
   • • Experience with software design and architecture for building highly efficient and scalable systems. 
   • • Experience with MongoDB Atlas for database hosting and storage. 
   • • Experience with SDLC in an Agile work environment using tools like Jira and GitHub. 
   • • Experience with AWS Services like ECS, EKS, EC2, S3, Lambda, Load Balancing, Route 53, API Gateway along with Infrastructure provisioning and optimization. 
   • • Knowledge and experience of NoSQL Databases is a must. 
   • • Experience with DevOps, CI/CD pipelines on Jenkins, GitHub Actions, etc. 
   • • Experience with containerization environments like Docker & Kubernetes. 
   • • Experience with Material Design is an advantage. 
   • • Experience with TDD is an advantage. 
   • • Experience or familiarity of blockchain protocols like Hyperledger Fabric a big advantage. 

Responsibilities:

• Collaborate with cross-functional teams to design, develop, and deliver robust and scalable web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js).

• Translate user requirements and wireframes into ecient and responsive front-end components while ensuring high performance and usability.

• Develop and maintain server-side logic using Node.js and Express.js, ensuring smooth integration with the front-end components.

• Design and implement data models, schemas, and queries for MongoDB, and manage database interactions effectively.

• Write reusable, testable, and efficient code following best practices and coding standards.

• Perform unit and integration testing of both front-end and back-end components to ensure reliability and quality of the application.

• Troubleshoot, debug, and resolve issues that arise during development, testing, and deployment phases.

• Stay up-to-date with industry trends and technologies, and proactively suggest improvements to enhance application performance, security, and maintainability.

• Participate in code reviews, provide constructive feedback, and mentor junior developers when necessary.

• Contribute to the continuous improvement of development processes, tools, and methodologies.

DevDarshan is a devotional platform launched by IIT graduates to promote the teachings of Indian culture and the Hindu way of life in India around the world. In the 21st century, where everything around is digitized then why not temples. That’s the idea behind DevDarshan.We’ve built a community of devotees from multiple Countries, through our Mobile Application that connects Temples and Devotees, have successfully raised seed investment and also started to generate revenue for the temples and Priests associated with us.Right now we are looking to grow our team and build new exciting features for devotees all around the world.

This is where you come in.

We are looking for a passionate and self-motivated individual to help our Web frontend too.

Requirements:

• Strong Design and User Experience. Have worked on building High Quality Web experiences and extremely focussed on coding for the best User Experience
• Experience in any frontend framework like ReactJS, VueJs
• Good understanding and experience of NoSQL and SQL Databases, which to be used when.
• Experience with CI/CD Systems like Jenkins, Github Actions.
• Some Experience with Realtime Databases/Systems or Socket based applications would be preferred.
• Some Experience with building Algorithms, Social Apps is preferred.
• Any experience with Handling Video Delivery like ffmpeg/HLS/WebRTC is preferred but not mandatory.

The Role

• You will be involved at all stages of the product development process, from design to development and deployment.
• You possess a passion for improving techniques, processes, tracking, and continuously improve our engineering practices and would work on a daily basis towards that

              Job location: Pune 

              Shift Time- 02pm-11pm 

• Seven years of relevant software development experience
• 3 or more years using data interchange methods, including XML, JSON, RESTful, and SOAP
• 4 or more years of experience developing software in Java, Python that interacts with relational databases
• Two or more years of experience with HTML, HTML5, CSS, JavaScript, and mobile development
• Two or more years of business and systems analysis experience
• Understanding/leveraging Machine Learning algorithms for Projects is a big plus
• Minimum one year of experience in ReactJS/NodeJS.
• Experience working in Projects with Agile principles and methodologies like Scrum Full stack development experience

• Experience in software / web application architecture, estimates, design and development experience
• Knowledge of formal methods and techniques in software development
• Experience / Knowledge in the following technologies/languages/libraries/frameworks:
  • Primary Experience in C#, NodeJS and React JS.
  • Add on experience in HTML5, CSS, jQuery, JSON, API, Angular JS, AWS / Azure.
  • Experience with Version Control Software (GIT)

As a senior full-stack developer, you will contribute to our end-to-end supply chain platform. You'll work with all key stakeholders to deliver scalable, maintainable code and deliver amazing user experiences. We are building a design and process-centric culture where you'll play a key role in the implementation of the foundation of all our systems. Up for a challenge?

You are:

• A self-starter with a sense of what it takes to be successful as a team
• An agile - welcome change, do as little as possible and embrace continuous delivery
• Conscious about how quality is carried through from the UI to all layers underneath
• Passionate about design as a foundation of great user experience
• Opinionated, but flexible to accommodate the big picture

• Analyze requirements, provide estimates and deliver code in an agile setup
• Stay on top of all owned work and raise red flags as early as possible
• Define the architecture, best practices, and coding standards for a full-stack development
• Support continuous technical improvement by investigating alternatives and technologies and present them for architectural review 
• Motivate team members, coach junior members, and extend goodwill to other employees

Must have

• Prior startup experience, preferably with war stories to share
• 3-5 years of software industry experience
• Solid understanding of software design, development, testing, and problem-solving 
• Expertise in coding efficient, high quality, and modularized software 
• Expertise in React.js and related ecosystem
• Experience with GraphQL and other modern JS ecosystems
• Expertise in common design patterns and anti-patterns Javascript
• Experience with service-oriented architecture and microservices
• Expertise in relational and non-relational databases and expertise in at least one database system
• Experience with planning, execution, and maintenance of test infrastructure for backend workflows
• Knowledge of AWS
• Knowledge of Unix shell and source control systems and tools such as git 
• Strong technical leadership skills
• Strong communication skills
• Technical mentoring skills

Great to have

• Experience with CI/CD and setting up a monitoring infrastructure
• Experience with Flutter
• Interest in blockchain and computer vision-related ML systems
• Experience working on high traffic systems
• Bachelor’s degree in Computer Science or a related discipline

Do you want to develop products and experiences that mean the world to your clients and their users? Do you want to work on transformative projects as opposed to minor tweaks to a product? Do you want to be exposed to work ranging from startups to Fortune 500 enterprises to global non-profits?

We are Finiteloop, a growing design and technology studio in Bangalore. We work hard to build grounded and exhilarating experiences for our customers and their users. Our design work dives deep into Design Thinking, Experience design, and Service design. On the technology side, we work on Solution architecture of large enterprise applications and, cutting-edge explorations on new technologies like Machine Learning and Blockchain.

We strive for client success and push our clients into thinking and doing more for their customer's experiences. All of us are self-driven individuals passionate about building products that deliver great experiences at scale. Our team is currently working on a wide variety of projects: communication design for safety culture on board cargo ships, mobile app for seafarer community, transforming how public radio can integrate with the digital world and, simplifying the user experience of oil and gas explorers.

We are looking for a person with excellent visual sensibilities with an ability to code jaw-dropping designs that make people feel like a part of the future. We want to look towards you as our Usability champion, especially when designing for accessibility. You will have to be self-driven, understand your brief and think more on it before executing it as per schedule. You will juggle couple of projects at the same time and we will create a space you follow your creative processes within these project constraints.

We have an extremely open culture that promotes questioning, honest critique and, quirky thinking. Over and above everything, we only can work with people who will do anything to follow the highest ethics of business and teamwork and a dedication to their craft.

Applications we want to work with you on:

• Digital applications and media (web or Mobile)
• Detailed component-level reusable UI libraries
• Applying micro interactions and creating components for the same.
• Developing user friendly, interactive, responsive web and mobile apps.

Things we would love to surprise us with:

• Independently design & develop new user-facing features
• Build reusable code and libraries for future use
• Optimise application for maximum speed and scalability on front-end side
• Collaborate with team members and key stakeholders
• Ensures latest technology standards, guidelines are utilized for development
• Assess & analyse web performance, come with resolution & causes and guide the team in implementation
• Guide and mentor team members
• Image authoring tools, to be able to crop, resize, or perform small adjustments on an image
• Enable and use automation tools to fast track development

Technologies & Tools we would want you to work on:

• ReactJS
• Angular
• HTML, CSS, CSS Pre-Processors
• NodeJS
• SEO, Accessibility
• Automated Unit & End-End tests
• React Native, Flutter

Some of our projects which you will get to work on: COVID-19 response | Service design exercise for reorganizing a $200mil company | Creating UX experience for products using Blockchain technology | Speculative design exercises for imagining the future | Creating an award-winning marketing website | Reimagining public radio digital experience

Write to us with any samples of work and a small note on why you would be interested to work with us.