MERN 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:

Optimo Capital is a newly established NBFC founded by Prashant Pitti, who is also a co-founder of EaseMyTrip (a billion-dollar listed startup that grew profitably without any funding).

Our mission is to serve the underserved MSME businesses in India with their credit needs. With less than 15% of MSMEs having access to formal credit, we aim to bridge this credit gap by employing a phygital model (physical branches + digital decision-making).

As a technology and data-first company, tech and data enthusiasts play a crucial role in building the infrastructure at Optimo, and help the company thrive.

What we offer:

Join our dynamic startup team as a Full Stack Developer and play a crucial role in web application & API developments, customer journeys, tech integrations, building robust credit risk and underwriting decision engines, cloud infrastructure, and more.

This is an exceptional opportunity to learn, grow, and make a significant impact in a fast-paced startup environment. We believe that the freedom and accountability to make decisions in technology, software, system architecture, and other design aspects bring out the best in you and help us build the best for the company.

This environment will not only offer you a steep learning curve but also allow you to experience the direct impact of your technological contributions. In addition, we offer industry-standard compensation.

What we look for:

We are looking for individuals with strong proficiency in Python, React, and Django. Any experience in a startup, front-end/back-end development, tech-integrations, or open-source contributions will be highly valued.

We focus not only on your skills but also on your attitude and your hunger to learn, grow, lead, and thrive—both as an individual and as part of a team. We encourage taking on challenges, learning new technologies, understanding, building, and implementing them within a short period of time. Your willingness to put in the extra effort to build the best systems will be highly appreciated.

Skills:

Excellent proficiency with the ability to write clean, robust, production-level code. Experience in designing, developing, and maintaining web apps and rule engines is required. At least one year of experience as a developer in any engineering / software-based role is required.

1) Frontend Development

• JavaScript: Strong proficiency in JavaScript, including ES6+ features
• React: Experience building complex user interfaces using React and its ecosystem (e.g., Redux, Context API)
• HTML/CSS: Solid understanding of HTML5 and CSS3 for creating responsive and accessible web pages

2) Backend Development

• Python: Proficiency in Python for server-side development
• Django: Working knowledge in Django, Django Rest Framework
• Flask (or FastAPI): Experience building RESTful APIs using Flask or FastAPI is a plus

3) REST APIs: A strong understanding of APIs is required, along with prior experience in API development or integration. Writing REST APIs from scratch is highly desirable.

4) Databases: A basic understanding of both relational (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB) databases is required. Basic knowledge of database management, optimization, and query design is expected.

5) Git: Proficiency in Git is essential, with experience in branching, merging, pull requests, and conflict resolution. Experience in collaborative projects using Git is highly valued.

6) Good to have: 

• Basic understanding of data pipelines/ETLs, dashboarding, and AWS is beneficial but not required.
• Experience in building WhatsApp chat/flow journeys, Working with maps, and creating data layers (e.g., Google Maps API, Mapbox) is highly valued. (not mandatory)

What you'll be working on:

1. Design and build systems focused on creating straight-through processes for lending (specifically property loans), from customer onboarding to disbursement, with an emphasis on accurate and efficient credit and risk assessment.
2. Take projects from ideation to production, including web applications, rule engines, third-party API integrations, and other technology developments.
3. Take initiative and ownership of engineering projects, ensuring a seamless user experience.
4. Manage and coordinate the cloud infrastructure and application setup, including source code repositories, CI/CD pipelines, servers, and deployments.

Other Requirements:

1. Availability for full-time work in Bangalore. Advantage for immediate joiners.
2. Strong passion for technology and problem-solving.
3. Ability to translate requirements into intuitive interfaces is highly appreciated 
4. At least 1 year of industry experience in a technical role specifically as a developer is a must.
5. Self-motivated and capable of working both independently and collaboratively.

If you are ready to embark on an exciting journey of growth, learning, and innovation, apply now to join our pioneering team in Bangalore.

Job description

• Hands-on experience in C#, http://asp.net/">ASP.NET, MVC, Web API, SQL Server.
• Experience in latest .Net framework versions (4/4.5/.Net Core 2.0 Frameworks), SQL Server 2008/2012.
• Experience in OOPS, HTML5, Bootstrap,CSS, AJAX/ JavaScript/ JQuery/ AngularJS and Angular 2.0 and web development.
• Excellent communication, analytical and interpersonal skills.
• .NET Full Stack (C#, MVC / .Net Core, WEB API, JSON, REST, JavaScript, Ajax)
• Good knowledge on Angular development, Angular JS
• knowledge in Azure cloud solutions.
• Developing and Hosting REST API Swagger and integration with angular.

Required Candidate profile Qualifications

• 5 – 8 years and above of professional software development experience.
• Improving system quality by identifying issues and common patterns and developing standard operating procedures.
• Enhancing applications by identifying opportunities for improvement, making recommendation and designing and implementing systems.

Job Title: Senior Full Stack Engineer

Location: Bangalore

About threedots:

At threedots, we are committed to helping our customers navigate the complex world of secured credit financing. Our mission is to facilitate financial empowerment through innovative, secured credit solutions like Loans Against Property, Securities, FD & More. Founded by early members of Groww, we are a well funded startup with over $4M in funding from India’s top investors.

Role Overview:

The Senior Full Stack Engineer will be responsible for developing and managing our web infrastructure and leading a team of talented engineers. With a solid background in both front and back-end technologies, and a proven track record of developing scalable web applications, the ideal candidate will have a hands-on approach and a leader's mindset.

Key Responsibilities:

• Lead the design, development, and deployment of our Node and ReactJS-based applications.
• Architect scalable and maintainable web applications that can handle the needs of a rapidly growing user base.
• Ensure the technical feasibility and smooth integration of UI/UX designs.
• Optimize applications for maximum speed and scalability.
• Implement comprehensive security and data protection.
• Manage and review code contributed by the team and maintain high standards of software quality.
• Deploy applications on AWS/GCP and manage server infrastructure.
• Work collaboratively with cross-functional teams to define, design, and ship new features.
• Provide technical leadership and mentorship to other team members.
• Keep abreast with the latest technological advancements to leverage new tech and tools.

Minimum Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• Minimum 3 years of experience as a full-stack developer.
• Proficient in Node.js and ReactJS.
• Experience with cloud services (AWS/GCP).
• Solid understanding of web technologies, including HTML5, CSS3, JavaScript, and responsive design.
• Experience with databases, web servers, and UI/UX design.
• Strong problem-solving skills and the ability to make sound architectural decisions.
• Proven ability to lead and mentor a tech team.

Preferred Qualifications:

• Experience in fintech
• Strong knowledge of software development methodologies and best practices.
• Experience with CI/CD pipelines and automated testing.
• Familiarity with microservices architecture.
• Excellent communication and leadership skills.

What We Offer:

• The opportunity to be part of a founding team and shape the company's future.
• Competitive salary with equity options.
• A creative and collaborative work environment.
• Professional growth opportunities as the company expands.
• Additional Startup Perks

Responsibilities

• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

Skills

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (such as Flux or Redux)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools such as Git, SVN, and Mercurial

Responsibilities

• Strong knowledge of MERN stack (MongoDB, Express JS, React JS, Node JS, HTML5, CSS3, jQuery, Bootstrap, SASS)
• Develop user interfaces for modern rich internet applications with the latest front-end technologies
• Developing features to enhance the user experience.
• Should have excellent in-depth knowledge on Nodejs and MongoDB
• Hands-on experience working with Object-Oriented JavaScript (OOJS), JavaScript libraries and their practical uses in building complex interactive experiences
• Building reusable code for future use
• Writing tested code and its documention

• 1+ years of experience in front end development and backend development is must
• Thorough knowledge of HTML5, CSS3 (LESS/SASS),React, Nodejs and Mongodb
• Solid understanding of JavaScript and the ability to pick up any framework quickly
• Strong Experience in back-end frameworks used to develop dynamic web pages (REST, GraphQL, WebSocket/socket.io)
• Expertise in developing and testing across multiple browsers, platforms, DOM implementations, etc.
• Strong experience in React, React Hooks, Redux, Thunk | Saga, ES6, Typescript, ESLint, Nodejs, GraphQL, Redis, AWS, Git, Github, Docker

Bonus but not mandatory

• UI/UX designs
• AWS
• Git
• CI/CD

What you must have: