MERN Stack Developer

Role & Responsibilities

We are currently seeking a Senior Engineer to join our Financial Services team, contributing to the design and development of scalable system.

The Ideal Candidate Will Be Able To-

• Take ownership of delivering performant, scalable and high quality cloud based software, both frontend and backend side.
• Mentor team members to develop in line with product requirements.
• Collaborate with Senior Architect for design and technology choices for product development roadmap.
• Do code reviews.

Ideal Candidate

• Strong Software Engineer fullstack profile using NodeJS / Python and React
• Mandatory (Experience) - Must have 6+ YOE in Software Development using Python OR NodeJS (For backend) & React (For frontend)
• Mandatory (Core Skills 1): Must have strong experience in working on Typescript
• Mandatory (Core Skills 2): Must have experience in message based systems like Kafka, RabbitMq, Redis
• Mandatory (Core Skills 3): Databases - PostgreSQL & NoSQL databases like MongoDB
• Mandatory (Company) - Product Companies Only
• Mandatory (Education) - B.Tech or Dual degree (Btech and Mtech or Integrated Msc/MS) from Tier 1 Engineering Institutes. Candidates from other institutions will not be considered unless they come from top-tier product companies
• Mandatory (Note) : This role is a hybrid role (2 days WFO)
• Preferred (Experience): Experience in Fin-Tech, Payment, POS and Retail products is highly preferred
• Preferred (Mentoring): Experience in mentoring, coaching the team.

• Job Summary:

We are seeking a skilled MERN Stack Developer to join our dynamic development team. The ideal candidate will have hands-on experience in building modern web applications using MongoDB, Express.js, React.js, and Node.js. You will be responsible for designing and developing scalable, high-performance web applications and collaborating with cross-functional teams to deliver top-tier solutions.

Key Responsibilities:

• Develop and maintain responsive web applications using the MERN stack.
• Design, build, and maintain RESTful APIs and integrate third-party services.
• Collaborate with UI/UX designers, product managers, and other developers to deliver seamless user experiences.
• Optimize applications for performance and scalability.
• Write clean, maintainable, and efficient code.
• Participate in code reviews and provide constructive feedback.
• Debug and troubleshoot issues across the full stack.
• Implement security and data protection best practices.

Job Title:

Senior Full Stack Developer

Experience: 5 to 7 Years. Minimum 5yrs FSD exp mandatory

Location: Bangalore (Onsite)

About ProductNova:

ProductNova is a fast-growing product development organization that partners with ambitious companies to build, modernize, and scale high-impact digital products. Our teams of product leaders, engineers, AI specialists, and growth experts work at the intersection of strategy, technology, and execution to help organizations create differentiated product portfolios and accelerate business outcomes.

Founded in early 2023, ProductNova has successfully designed, built, and launched 20+ large-scale, AI-powered products and platforms across industries. We specialize in solving complex business problems through thoughtful product design, robust engineering, and responsible use of AI.

What We Do

Product Development

We design and build user-centric, scalable, AI-native B2B SaaS products that are deeply aligned with business goals and long-term value creation.

Our end-to-end product development approach covers the full lifecycle:

● Product discovery and problem definition

● User research and product strategy

● Experience design and rapid prototyping

● AI-enabled engineering, testing, and platform architecture

● Product launch, adoption, and continuous improvement

From early concepts to market-ready solutions, we focus on building products that are resilient, scalable, and ready for real-world adoption. Post-launch, we work closely with customers to iterate based on user feedback and expand products across new use cases, customer segments, and markets.

Growth & Scale

For early-stage companies and startups, we act as product partners—shaping ideas into viable products, identifying target customers, achieving product-market fit, and supporting go-to-market execution, iteration, and scale.

For established organizations, we help unlock the next phase of growth by identifying opportunities to modernize and scale existing products, enter new geographies, and build entirely new product lines. Our teams enable innovation through AI, platform re-architecture, and portfolio expansion to support sustained business growth.

Role Overview

We are looking for a Senior Full Stack Developer with strong expertise in frontend development using React JS, backend microservices architecture in C#/Python, and hands-on experience with AI-enabled development tools. The ideal candidate should be comfortable working in an onsite environment and collaborating closely with cross-functional teams to deliver scalable, high-quality applications.

Key Responsibilities:

• Develop and maintain responsive, high-performance frontend applications using React JS

• Design, develop, and maintain microservices-based backend systems using C#, Python

• Experienced in building Data Layer and Databases using MS SQL, Cosmos DB, PostgreSQL

• Leverage AI-assisted development tools (Cursor / GitHub Copilot) to improve coding

efficiency and quality

• Collaborate with product managers, designers, and backend teams to deliver end-to-end

solutions

• Write clean, reusable, and well-documented code following best practices

• Participate in code reviews, debugging, and performance optimization

• Ensure application security, scalability, and reliability

Mandatory Technical Skills:

• Strong hands-on experience in React JS (Frontend Coding) – 3+ yrs

• Solid experience in Microservices Architecture C#, Python – 3+ yrs

• Experience building Data Layer and Databases using MS SQL – 2+ yrs

• Practical exposure to AI-enabled development using Cursor or GitHub Copilot – 1yr

• Good understanding of REST APIs and system integration

• Experience with version control systems (Git), ADO

Good to Have:

• Experience with cloud platforms (Azure)

• Knowledge of containerization tools like Docker and Kubernetes

• Exposure to CI/CD pipelines

• Understanding of Agile/Scrum methodologies

Why Join ProductNova

● Work on real-world, high-impact products used at scale

● Collaborate with experienced product, engineering, and AI leaders

● Solve complex problems with ownership and autonomy

● Build AI-first systems, not experimental prototypes

● Grow rapidly in a culture that values clarity, execution, and learning

If you are passionate about building meaningful products, solving hard problems, and shaping the future of AI-driven software, ProductNova offers the environment and challenges to grow your career.

When life gives you lemons and you can code both front and back with equal zest, you’re probably a Full Stack Developer we’d love on our team.

At Lemon Yellow, we’re looking for someone who thrives on building end-to-end web solutions using the MERN stack. From crafting intuitive front-ends to developing efficient, scalable back-end systems, you’ll be involved in shaping digital products from the ground up. If turning design mockups into pixel-perfect, high-performance applications excites you, we’re ready to build with you.

1. Core Responsibilities

• Build and maintain end-to-end web applications using the MERN stack.
• Act as a bridge between design and development to bring ideas to life with clean, scalable code.
• Support digital campaigns through intuitive and functional tech implementations.
• Design, develop, and deploy scalable front-end and back-end components.
• Write clean, maintainable code while collaborating with designers, marketers, and other developers.
• Translate product requirements and UI/UX wireframes into fully functional digital solutions.

2. API & Integration Management

• Implement RESTful APIs and connect third-party tools and services.
• Ensure smooth data exchange across platforms through secure integrations.
• Manage user authentication and authorization using mechanisms like JWT or OAuth.

3. Code Quality & Optimization

• Debug, profile, and optimize applications for performance and reliability.
• Maintain unit and integration test coverage for code robustness.
• Conduct code reviews and help improve internal coding standards.

4. Agile Collaboration

• Actively participate in agile activities: daily stand-ups, sprint planning, retros, and demos.
• Contribute to task estimation and cross-functional problem-solving.
• Stay responsive to project shifts and quick delivery needs.

5. Continuous Learning & Innovation

• Stay up to date with the latest development trends, tools, and practices.
• Share learnings and explore creative solutions for technical challenges.
• Experiment with emerging technologies and suggest process improvements.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Minimum 1 year of hands-on experience building production-ready web applications using MongoDB, Express.js, React.js, and Node.js.
• Strong command of JavaScript (ES6+), HTML5, and CSS3.
• Experience with Git and version control systems
• Familiarity with RESTful API design, JSON, and authentication mechanisms (JWT, OAuth)
• Familiarity with cloud platforms (AWS, Azure, or GCP) and containerization (Docker).
• Basic understanding of CI/CD pipelines and automated testing.
• Strong analytical and problem-solving mindset.
• Detail-oriented with a passion for clean, maintainable code.
• Collaborative attitude with good verbal and written communication skills.

What are we offering?

Experience

• A chance for you to work in a thriving and growing environment. We foster a culture where growth is harmonious and creativity is always appreciated - you grow and you encourage others to do the same.

Exposure

• If you believe in your work, we believe in you. If you think your designs have the power to change the world, we'll help you bring your vision to life and give you the platform to prove it.

Empathy

• We have a carefully curated culture that promotes 2 things: fun & fulfilment. Your welfare - personal, professional, mental, and physical - becomes our responsibility. From Fitness Thursdays to learning sessions, we try to make you laugh & learn.

Who are we?

Lemon Yellow LLP is a user-centered UI/UX design agency, based out of Thane, Maharashtra. With international operations, an experienced mentorship, and a passionate team, we aim to design digital happiness.

How do you reach us?

Well, after you send in your application, it takes us 2-3 weeks to review it. Sometimes, not often, we might delay just a bit beyond that. This happens when our mailbox is flooded with applications.

We promise we won’t ghost you, you’ll definitely hear from us. In the meantime, feel free to explore our official website.

Brandzzy is a forward-thinking technology company dedicated to building innovative and scalable Software-as-a-Service (SaaS) solutions. We are a passionate team focused on creating products that solve real-world problems and deliver exceptional user experiences. Join us as we scale our platform to new heights.

Role Summary:

We are seeking an experienced and visionary Senior Full Stack Developer to lead the technical design and development of our core SaaS platform. In this role, you will be responsible for making critical architectural decisions, mentoring other engineers, and ensuring our application is built for massive scale and high performance. You are not just a coder; you are a technical leader who will shape the future of our product and drive our engineering culture forward.

Key Responsibilities:

• Lead the architecture and design of highly scalable, secure, and resilient full-stack web applications.
• Take ownership of major features and system components, from technical strategy through to deployment and long-term maintenance.
• Mentor and guide junior and mid-level developers, conducting code reviews and fostering a culture of technical excellence.
• Drive technical strategy and make key decisions on technology stacks, frameworks, and infrastructure.
• Engineer and implement solutions specifically for SaaS scalability, including microservices, containerization (Docker, Kubernetes), and efficient cloud resource management.
• Establish and champion best practices for code quality, automated testing, and robust CI/CD pipelines.
• Collaborate with product leadership to translate business requirements into concrete technical roadmaps.
• 
  

Skills & Qualifications:

• 5+ years of professional experience in full-stack development, with a proven track record of building and launching complex SaaS products.
• Deep expertise in both front-end (React, Angular, Vue.js) and back-end (Node.js, Python, Java, Go) technologies.
• Expert-level knowledge of designing and scaling applications on a major cloud platform (AWS, Azure, or GCP).
• Proven, hands-on experience architecting for scale, including deep knowledge of microservices architecture, message queues, and database scaling strategies (e.g., sharding, replication).
• In-depth understanding of database technologies (both SQL and NoSQL) and how to choose the right one for the job.
• Expertise in implementing and managing CI/CD pipelines and advocating for DevOps principles.
• Strong leadership and communication skills, with the ability to articulate complex technical ideas to both technical and non-technical stakeholders.
• A passion for solving complex problems and a proactive, self-starter attitude.

We are looking for LAMP-Stack developers. Someone with a minimum of 3 years of experience.
Must have:

• Strong verbal and written communication skills, analytical skills and the ability to learn quickly
• Creative approach to problem-solving with the ability to focus on details while maintaining the "big picture" view
• Proven experience of working on/with Composer,  PHP7, CodeIgniter, MySQL.
• Experience with creating and consuming APIs.
• Knowledge of wordpress, Python, Elasticsearch, Redis, RabbitMQ, Cloudflare would be a HUGE PLUS.
• Any other experience with languages like NODE will be appreciated (but must NOT be your primary skill)

The Job responsibilities would include:

• Create new features to existing web apps.
• Maintain & enhance current features based on requirements.

You must have the ability to work independently once you are made familiar with the code/project. We need someone who can make good logical decisions without compromising the quality of code. 

• 5+ years of working experience in the technologies like Angular6 or higher, NodeJS & MySQL, AWS Cloud Services
• Strong Hands-on with any Enterprise Programming Language (Python/.Net) in past
• Experience with architecting, designing, and debugging MEAN, full-stack based enterprise software
• Should have expertise in designing relational database tables & writing SQL Queries, Stored Procedures, and Functions.
• Ability to handle small teams and mentor them.
• Ability to analyze, design, and build object-oriented, component-based applications.
• Extensive experience in the design, planning, and implementation of complex large-scale enterprise solutions using distributed teams within process-oriented organizations.
• Experience developing and deploying applications on Linux based operating systems
• Willingness to experiment with new and latest tools and technologies.
• Experience in Banking, Credit Card Payments, and Gateways domain would be an advantage. ·

• Design and develop solutions to complex technical problems spanning the development of product features, quality validation, and deployment to customers
• Build highly scalable web applications that are designed for high performance
• Lead design and code reviews
• Work closely with senior management, Product Manager, and our team of developers.
• Contribute visibly to product quality, innovation, and customer-centric design across the engineering organization
• Lead, motivate and direct team members to build high-quality software in a fast-paced agile environment
• Actively hire the engineering & product team, & develop the existing team
• Share experiences and skills to aid team members in enhancing their professional skills and career

• 4+ years of experience building large scalable systems
• Strong experience in agile methodologies and test-driven development (TDD)
• Experience in software development using open source technologies
• Knowledge in domain-driven design, design patterns, and enterprise integration patterns
• Must have experience in delivering software via complete Continuous Integration and Continuous Delivery (CI/CD) pipeline

• A history of working on side/hobby projects or contributing to open source projects is a plus
• You have worked in a startup before

Most importantly: Be excited to learn what you don’t already know!

About the role 

We are looking for a strong full stack engineer who has experience building web and mobile applications for enterprise and consumers. You will help design, build and maintain scalable applications and build the API infrastructure that can be used across all client products.

Responsibilities:

• Building applications that are responsive, performant, and accessible Produce high quality HTML/CSS pages from mock ups.
• Collaborating with other disciplines across engineering, UX, and Product to help develop front end solutions.
• Using our Micro service stack to integrate front end into the development lifecycle.
• Build high availability and extremely reliable transactional systems.
• Own and manage all phases of the software development lifecycle (planning, design, implementation, deployment and support)
• Design, build and maintain API infrastructure that allows for standard integration methodology between applications and third party services
• Collaborate effectively with the rest of the team to design and launch new features
• Deliver on rapid implementation schedules to build web functionality that is fast, scalable, and upholds smart development goals and principles
• Work on all things front-end and backend including web and mobile
• Maintain code integrity, quality and ensure responsiveness of applications.

Requirements:

• 3+ year track record of relevant work experience and a Computer Science or a related technical discipline is required.
• Proficient in HTML 5, CSS, and JavaScript frameworks, like React, Vue.js, NodeJS among others.
• Experience working with graphic designers and converting designs to visual elements using JavaScript, HTML and CSS.
• Strong knowledge  and experience with server-side web of building restful APIs for internal and external products using Node.js
• Doesn’t shy away from testing and code review.
• Good knowledge of OOPS Concept and Data Structure like Queue, Stack, Tree, Linked List.
• Knowledge of code versioning tool - Git.
• knowledge of cloud computing platforms, like Amazon Web Services
• Strong Knowledge of database systems like Mysql.
• Interest and ability to learn new technology stacks as needed.
• Good problem solving skills and Willing to learn new technology.
• Passion for developing awesome user experiences
• Independent, dedicated, and able to deliver production ready code with minimal guidance.