MERN Stack Developer

About Nirmitee.io

Nirmitee.io is a fast-growing product engineering and IT services company building world-class products across healthcare and fintech. We believe in engineering excellence, innovation, and long-term impact. As a Tech Lead, you’ll be at the core of this journey — driving execution, building scalable systems, and mentoring a strong team.

• What You’ll DoLead by Example:

Be a hands-on contributor — writing clean, scalable, and production-grade code.

Review pull requests, set coding standards, and push for technical excellence.

• Own Delivery:

Take end-to-end ownership of sprints, architecture, code quality, and deployment.

Collaborate with PMs and founders to scope, plan, and execute product features.

• Build & Scale Teams:

Mentor and coach engineers to grow technically and professionally.

Foster a culture of accountability, transparency, and continuous improvement.

• Drive Process & Best Practices:

Implement strong CI/CD pipelines, testing strategies, and release processes.

Ensure predictable and high-quality delivery across multiple projects.

• Architect & Innovate:

Make key technical decisions, evaluate new technologies, and design system architecture for scale and performance.

Help shape the engineering roadmap with future-proof solutions.

• What We’re Looking For10+ years of experience in software development with at least 2 years in a lead/mentorship role.
• Strong hands-on expertise in MERN Stack or Python/Django/Flask, or GoLang/Java/Rust.
• Experience with AWS / Azure / GCP, containerization (Docker/Kubernetes), and CI/CD pipelines.
• Deep understanding of system design, architecture patterns, and performance optimization.
• Proven track record of shipping products in fast-paced environments.
• Strong communication, leadership, and ownership mindset.
• Believes in delivering what is committed, has a show-up attitude

• Nice to HaveExposure to healthcare or fintech domains.
• Experience in building scalable SaaS platforms or open-source contributions.
• Knowledge of security, compliance, and observability best practices.

• Why Nirmitee.ioWork directly with the founding team and shape product direction.
• Flat hierarchy — your ideas will matter.
• Ownership, speed, and impact.
• Opportunity to build something historical.

We're looking for an experienced Full-Stack Engineer who can architect and build AI-powered agent systems from the ground up. You'll work across the entire stack—from designing scalable backend services and LLM orchestration pipelines to creating frontend interfaces for agent interactions through widgets, bots, plugins, and browser extensions.

You should be fluent in modern backend technologies, AI/LLM integration patterns, and frontend development, with strong systems design thinking and the ability to navigate the complexities of building reliable AI applications.

Note: This is an on-site, 6-day-a-week role. We are in a critical product development phase where sthe peed of iteration directly determines market success. At this early stage, speed of execution and clarity of thought are our strongest moats, and we are doubling down on both as we build through our 0→1 journey.

WHAT YOU BRING:

You take ownership of complex technical challenges end to end, from system architecture to deployment, and thrive in a lean team where every person is a builder. You maintain a strong bias for action, moving quickly to prototype and validate AI agent capabilities while building production-grade systems. You consistently deliver reliable, scalable solutions that leverage AI effectively — whether it's designing robust prompt chains, implementing RAG systems, building conversational interfaces, or creating seamless browser extensions.

You earn trust through technical depth, reliable execution, and the ability to bridge AI capabilities with practical business needs. Above all, you are obsessed with building intelligent systems that actually work. You think deeply about system reliability, performance, cost optimization, and you're motivated by creating AI experiences that deliver real value to our enterprise customers.

WHAT YOU WILL DO:

Your primary responsibility (95% of your time) will be designing and building AI agent systems across the full stack. Specifically, you will:

• Architect and implement scalable backend services for AI agent orchestration, including LLM integration, prompt management, context handling, and conversation state management.
• Design and build robust AI pipelines — implementing RAG systems, agent workflows, tool calling, and chain-of-thought reasoning patterns.
• Develop frontend interfaces for AI interactions including embeddable widgets, Chrome extensions, chat interfaces, and integration plugins for third-party platforms.
• Optimize LLM operations — managing token usage, implementing caching strategies, handling rate limits, and building evaluation frameworks for agent performance.
• Build observability and monitoring systems for AI agents, including prompt versioning, conversation analytics, and quality assurance pipelines.
• Collaborate on system design decisions around AI infrastructure, model selection, vector databases, and real-time agent capabilities.
• Stay current with AI/LLM developments and pragmatically adopt new techniques (function calling, multi-agent systems, advanced prompting strategies) where they add value.

BASIC QUALIFICATIONS:

• 4–6 years of full-stack development experience, with at least 1 year working with LLMs and AI systems.
• Strong backend engineering skills: proficiency in Node.js, Python, or similar; experience with API design, database systems, and distributed architectures.
• Hands-on AI/LLM experience: prompt engineering, working with OpenAI/Anthropic/Google APIs, implementing RAG, managing context windows, and optimizing for latency/cost.
• Frontend development capabilities: JavaScript/TypeScript, React or Vue, browser extension development, and building embeddable widgets.
• Systems design thinking: ability to architect scalable, fault-tolerant systems that handle the unique challenges of AI applications (non-determinism, latency, cost).
• Experience with AI operations: prompt versioning, A/B testing for prompts, monitoring agent behavior, and implementing guardrails.
• Understanding of vector databases, embedding models, and semantic search implementations.
• Comfortable working in fast-moving, startup-style environments with high ownership.

PREFERRED QUALIFICATIONS:

• Experience with advanced LLM techniques: fine-tuning, function calling, agent frameworks (LangChain, LlamaIndex, AutoGPT patterns).
• Familiarity with ML ops tools and practices for production AI systems.
• Prior work on conversational AI, chatbots, or virtual assistants at scale.
• Experience with real-time systems, WebSockets, and streaming responses.
• Knowledge of browser automation, web scraping, or RPA technologies.
• Experience with multi-tenant SaaS architectures and enterprise security requirements.
• Contributions to open-source AI/LLM projects or published work in the field.

WHAT WE OFFER:

• Competitive salary + meaningful equity.
• High ownership and the opportunity to shape product direction.
• Direct impact on cutting-edge AI product development.
• A collaborative team that values clarity, autonomy, and velocity.

Job Title: MERN Stack Developer (Node.js & React.js Expert)

Experience: 5 – 7 Years

Location: Bangalore

Work Mode : Hybrid

Employment Type: Full Time

Job Summary:

We are seeking a highly skilled MERN Stack Developer with a strong background in Node.js and React.js to join our dynamic team. The ideal candidate should have 5–7 years of hands-on experience building scalable, secure, and high-performance web applications. You will play a critical role in the architecture, design, development, and deployment of end-to-end solutions using the MERN stack.

Key Responsibilities:

• Design, develop, and maintain full-stack applications using MongoDB, Express.js, React.js, and Node.js
• Build RESTful APIs and ensure integration with front-end components
• Optimize components for maximum performance across a vast array of web-capable devices and browsers
• Write clean, modular, and reusable code with proper documentation and testing
• Troubleshoot and debug issues across the stack
• Collaborate with UI/UX designers, product managers, and other developers to deliver high-quality products
• Participate in code reviews, architectural discussions, and continuous improvement of development processes
• Ensure secure coding practices and compliance with best standards
• Manage deployments and maintain CI/CD pipelines

Required Skills and Qualifications:

• 5–7 years of professional experience in full-stack web development with a focus on Node.js and React.js
• Deep understanding of JavaScript, ES6+, and asynchronous programming
• Strong experience in building scalable backend services using Node.js and Express
• Proficient in building rich UI components using React.js, Redux/Context API, and modern front-end tooling (Webpack, Babel, etc.)
• Experience with MongoDB and Mongoose, and understanding of NoSQL database design
• Hands-on experience with API design, JWT/Auth, and third-party integrations
• Familiarity with Git, Docker, and modern DevOps practices
• Knowledge of performance optimization and security best practices
• Experience with testing frameworks (Jest, Mocha, Cypress, etc.)

Nice to Have:

• Exposure to TypeScript
• Experience with GraphQL
• Familiarity with cloud platforms like AWS, Azure, or GCP
• Knowledge of CI/CD tools like Jenkins, GitHub Actions, etc.

Note : Immediate & Serving Notice period candidates are prefered

key skills : mern

Requirements:

• Academics (10th, 12th and Bachelors) > 80%
• Highly proficient in JS (EReactJS, NodexpressJS)
• Basic knowledge of PostgreSQL/MongoDB is a plus
• Should have expertise in developing data driven, responsive, modern web applications
• Aptitude to continuously learn new languages/concepts. Breadth of knowledge is required
• Strong fundamentals in programming concepts
• Knowledge of web development concepts and databases
• A really strong passion to towards technology
• Entrepreneurial attitude

Roles and Responsibilities:

• Develop, deploy and maintain IIoT platform used by the whole of Company
• Roll out similar IoT systems across the globe
• Understanding the functional domain deeply.

Who are we?  

Whatfix is the #1 Digital Adoption Platform (DAP) for Enterprises. We are disrupting the way Learning, Training and Application Support content is consumed. We provide large enterprises with a SaaS platform that helps accelerate product adoption and reduce support & training efforts by providing contextual and step by step guidance inside any web application at the exact time a task is being performed. The product has redefined the way companies onboard, train, and provide support to users. 

What sets us apart from the rest?

With over 100 of the Fortune 500 companies already onboard as customers, Whatfix has been named among the top 20 B2B tech companies alongside the likes of Adobe, PayPal, and Cisco.

With a YoY growth of 300%, we have also been recognized among the top 50 fastest growing SaaS companies worldwide in the SaaS 1000 list and as a Market Leader by Gartner in the Digital Adoption space. 

We are pleased to have an Employee rating of 4.6 on Glassdoor and our Customer obsession can be seen in our reviews on platforms like G2 Crowd & Gartner Peer Insights.

The employees are happy, the customers are happy, but what about the investors? Take a look for yourself - Sequoia Capital || Stellaris || Cisco || Eight Roads || Helion Ventures

“Hustle Mode ON” is something we live by.

We are looking for a skilled Web Developer to join our growing team. As a Web Developer, you will be responsible for designing and developing responsive and dynamic web applications using PHP, HTML, CSS, JavaScript, and various front-end technologies.

Responsibilities:

• Design and develop dynamic and responsive web applications using PHP, HTML, CSS, JavaScript, and various front-end technologies.
• Work closely with cross-functional teams to define, design, and ship new features.
• Write clean, maintainable, and efficient code.
• Ensure the performance, quality, and responsiveness of web applications.
• Debug and troubleshoot issues, and fix bugs in a timely manner.
• Write unit tests to ensure code quality and stability.
• Use strong problem-solving skills to tackle complex technical challenges.
• Stay up-to-date with the latest industry trends and technologies.

Requirements:

• Bachelor's degree in Computer Science or a related field.
• 2 to 4 years of experience in full-stack web development.
• Strong knowledge of HTML, CSS, JavaScript, wordpress add PHP.
• Strong problem-solving and analytical skills.
• Ability to work in a fast-paced and dynamic environment.
• Excellent communication and interpersonal skills.
• Good to have AWS knowledge

We are an equal-opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Required Skills:

• .NET Core 
• C#
• Web API
• Aware of Microservice concepts
• MongoDB 
• Excellent communication
  
  

Docker, Kubernetes, and Linux knowledge is desirable. Having worked in a product development environment is desirable. Having worked in the finance and banking domain is desirable.

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 Web development.

Requirements:

• Bachelor's degree in computer science, information science, or similar.
• At least One year of experience as a Full Stack developer.
• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
• Should have hands on experience in using sockets, express, SQL query builder.
• Should have worked on database like SQL, MYSQL, MongoDB.
• 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.

Regarding the job role: 

The Senior Developer is responsible for running the day to day operations of a group of developer/s. The individual should exhibit proven experience on our technology stack and product. Our technology stack is primarily written in React, Node + Express with Apollo, GraphQL, Typescript and MySQL on AWS Cloud Services.

Responsibilities:

• Contribute at a senior level to the development process.
• Own the product development lifecycle with the team.
• Work closely with the subordinates both at the technical as well as troubleshooting and problem solving.
• Manage developer allocations on tasks to best utilise time and resources.
• Work with Product Managers and the team to ensure that commitments are met.
• Responsible for the quality of work completed.
• Ability to do code reviews and maintain the quality standards. 
• Ability to conduct manual server deployments and automate the same. 
• Mentor and stimulate team member career growth.

Qualification:

BE/ME in Computer Science, Information Technology or a related subject, MCA, MSc(IT) or equivalent degree.

Required Skills:

• 4-6 years of proven software development experience with React, Node/Express, CSS/Bootstrap, HTML5 and MySQL or any RDBMS Server.
• Experience in TypeScript, GraphQL, TypeORM, styled components.
• Familiarity with Webpack and bundling the web applications for server deployment.
• Experience using AWS Toolchain or any other public cloud providers.
• Familiarity with shell scripting to automate deployment processes. 
• Ability to write robust, maintainable applications.
• Ability to build and work with distributed, high-volume backend services.
• Have a great understanding of system design, data structures, object-oriented programming and software engineering principles.
• You should have experience in identifying, debugging and resolving complex production issues.
• Awareness of continuous deployment tools such as Jenkins or other DevOps tools will be an advantage.
• Well versed with agile methodologies and continuous development / integration approaches. 
• People management/mentoring experience is required.

Seeking passionate and senior software engineers having 5+ years of experience in Ruby on Rails.

You are a full-stack engineer with an innate passion for writing elegant, idiomatic & pragmatic code.

• Excellent verbal & written communication skills. And you enjoy collaborating with others
• 5+ years of experience with Ruby on Rails or other Ruby frameworks
• Sound knowledge of object-oriented programming concepts and design patterns
• Strong knowledge of relational database concepts, PostgreSQL, MySQL, etc.
• Working knowledge of Javascript, DOM, CSS, HTML
• Strong experience with Git versioning system, PR review process, and Code quality metrics
• You understand the importance of concepts like "Test Driven Development" and utilize them to bring more stability & predictability in applications. We are a heavy user of RSpec, Unit Testing, Continuous Integration (CI) & Continuous Deployments (CD)

• Experience with modern Javascript libraries, frameworks & its ecosystem will be a huge plus. Example: React.js / Ember.js / Angular.js / Vue.js etc.
• Working knowledge or understanding of the SaaS ecosystem will be a plus
• Experience with Micro-service Architecture, Service Oriented Architecture (SOA), GraphQL, and REST APIs will be a huge plus
• Knowledge of Sidekiq, Redis, Solr, Heroku, AWS will be a huge plus
• Experience working with Payment Gateways like Chargify, or Stripe will be a plus
• Contribution to open source projects, have participated in some technical community or meetups or interest group or have written or spoken in public about their technical ideas
• Inclination to develop your own gems or reusable components or libraries
• Exposure to cloud deployment on Amazon or deployment on Heroku or standalone virtual servers etc. (or exposure to PaaS)
• Inclination to develop your own gems or reusable components or libraries

• We're a remote-friendly and calm company
• We use the latest and powerful hardware for software development
• We are heavy on extreme programming and agile methodology. Our DNA is engineering practices like TDD, CI, CD, Code reviews, Pair programming, etc
• We love to collaborate and contribute to open source projects (check: https://www.github.com/kiprosh">Kiprosh Github)
• We encourage and help you to blog about your development experience with the rest of the world. (check: https://blog.kiprosh.com/">Kiprosh Engineering Blogs)
• Our dedicated CoE (Center of Excellence) group ensures that company-wide we all achieve excellence in the area of our interest, learn the latest and greatest, and keep sharing product & technology topics regularly across the organization
• Company-wide, we conduct monthly events to have fun together as a One Kiprosh team.
• We are big on rewards and recognition. We celebrate spotlight awards every quarter. We have yearly award ceremonies and celebrations. (check: https://www.linkedin.com/company/kiprosh">Kiprosh Linkedin Page)
• We have company-wide outings twice a year (but pause for a year since March 2020 due to Covid19 pandemic)
• We are a passionate group of humble, kind, and fun-loving individuals

• Must have knowledge in Angular or React frontend and Node JS
• Write reusable, testable, efficient code
• Knowledge of creating front-end applications using HTML5, CSS, and Javascript.
• Candidates should have Knowledge of recent Angular versions and should be comfortable working independently.
• Should have working experience with database modeling, ability to plan DB schema and write queries with ease(MongoDB, MYSQL, Redis)
• Implementation of security and data protection
• Comfortable working with Git/Github
• Ability and willingness to manage multiple projects and tasks.