Mern Stack Developer

Job Title: Full Stack Developer (Node.js + React.js)

📍 Location: Gurgaon (On-site)

🕒 Experience: 5+ Years

🕒 Working Days: 5 Days(Mon-fri)

Job Summary:

We are hiring a passionate and experienced Full Stack Developer proficient in Node.js and React.js for our client. The ideal candidate should have solid experience in designing scalable systems, writing optimized code, implementing role-based access control, handling task prioritization, and building robust web applications.

Key Responsibilities:

• Design scalable user management systems with role-based access and authentication.
• Develop backend services and REST APIs using Node.js.
• Build dynamic and optimized front-end applications using React.js and Redux.
• Handle async operations, task queues, and implement retry and prioritization logic.
• Optimize React components for performance using hooks and memoization.
• Ensure secure and scalable system design with proper error handling and authorization flows.
• Apply JavaScript concepts like closures, event loop, and async patterns in real-world scenarios.
• Collaborate with DevOps for basic CI/CD and deployment processes.

Mandatory Technical Skills:

• Frontend: React.js, Redux, JavaScript (ES6+)
• Backend: Node.js, Express.js
• Authentication & Authorization: JWT, OAuth2, Role-Based Access Control (RBAC)
• Task Management: Async/Await, Promises, Retry Mechanisms
• Database: MongoDB or PostgreSQL
• Version Control: Git

Soft Skills:

• Strong problem-solving and system design skills
• Ability to work independently and in a collaborative team
• Clear communication of technical ideas
• Ownership of tasks and components end-to-end

Focus Areas:

• System Design (User Management, Fault Tolerance, Load Distribution)
• JavaScript Core Concepts (Closures, Scope, Event Loop)
• React Optimization & Hooks
• Node.js Architecture & Async Programming
• Task Prioritization and Retry Logic

Your Opportunity Join our dynamic team as a Full Stack Software Dev, where you'll work at the intersection of innovation and leadership. You'll be part of a passionate group of engineers dedicated to building cutting-edge SaaS solutions that solve real customer challenges. This role is perfect for an experienced engineer who thrives on managing teams, collaborating with leadership, and driving product development. You’ll work directly with the CEO and senior architects, ensuring that our products meet the highest design and performance standards.

Key Responsibilities

• Lead, manage, and mentor a team of engineers to deliver scalable, high-performance solutions.
• Coordinate closely with the CEO and product leadership to align on goals and drive the vision forward.
• Collaborate with distributed teams to design, build, and refine core product features that serve a global audience.
• Stay hands-on with coding and architecture, driving key services and technical initiatives from end to end.
• Troubleshoot, debug, and optimize existing systems to ensure smooth product operations.
• Requirements & Technical Skills
• Bachelor's/Master’s/PhD in Computer Science, Engineering, or related fields (B.Tech, M.Tech, B.CA, B.E./M.E).
• 4 to 8 years of hands-on experience as a software developer, ideally in a SaaS environment.
• Proven track record in developing scalable, distributed systems and services.
• Solid understanding of the Software Development Lifecycle (SDLC).
• Strong programming experience in Spring & Hibernate with Kotlin, React, Nest.js, Python, and Shell scripting.
• Expertise in Unix-based systems, container technologies, and virtual machines.
• Knowledge of both relational and non-relational databases (MySQL, PostgreSQL, MongoDB, DocumentDB). Preferred Qualifications
• Familiarity with Agile methodologies.
• Experience working on both structured and unstructured data sources. Soft Skills
• Strong leadership, coaching, and mentoring capabilities to inspire and guide a team of engineers.
• Excellent communication skills, with the ability to present complex technical concepts clearly to non-technical stakeholders.
• Adaptable to new technologies in a fast-paced environment.

Full Stack Developer Responsibilities:

• Developing front end website architecture.
• Designing user interactions on web pages.
• Developing back-end website applications.
• Creating servers and databases for functionality.
• Ensuring cross-platform optimization for mobile phones.
• Ensuring responsiveness of applications.
• Working alongside graphic designers for web design features.
• Seeing through a project from conception to finished product.
• Designing and developing APIs.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.

Requirements

• Degree in computer science.
• Experience with ( React+Node ) Or ( react + Angular) Or ( Node + Angular)
• Strong organizational and project management skills.
• Proficiency with fundamental front-end languages such as HTML, CSS, and JavaScript.
• Familiarity with JavaScript frameworks
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• Familiarity with database technology such as MySQL, Oracle, and MongoDB.
• Excellent verbal communication skills.
• Good problem-solving skills.
• Attention to detail.

We are looking for a highly capable Node.js developer to optimize our web-based application performance. You will be collaborating with our front-end application developers, designing back-end components, and integrating data storage and protection solutions.

To ensure success as a Node.js developer, you should possess extensive knowledge of Node.Js-based services and experience in a similar role. An accomplished Node.js developer will be someone whose expertise results in the stable, fast, and secure exchange of data between servers and end-users.

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:

• At least two 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.

About the Position

We are looking for a passionate and experienced software engineer to join our team at Mumbai. In this role, your primary responsibilities will be to take ownership of developing user facing applications and features in an agile manner. You will design and implement scalable and performant front-end solutions from scratch, while also taking a hard look at the existing ones.

What you will do at QI?

• Design, develop and deliver new user-facing apps and feature and improve existing ones
• Take ownership of product(s), and contribute to dev cycles and sprints planning
• Ensure technical feasibility of UI/UX design, share inputs with other teams including product, design and QA
• Optimize applications for performance, user experience and SEO
• Build reusable code and libraries. Contribute to open source projects.
• Stay up-to-date with new technologies with an eye of constantly adapting and improving our systems and methods.

Basic Job requirements

• 2 years + work experience in a similar role
• Strong experience in HTML5, CSS, DOM and front-end tooling ecosystem (Gulp,Grunt, Webpack)
• Excellent concepts and command over JavaScript
• Strong concepts and commercial experience in Vue.js
• Solid foundation in software development ( algorithm design, data structure, SDLC)
• Good concepts of unit testing and automation testing for UI components
• Good understanding of web app performance including Google Core Web Vitals metrics.

Location - Remote 

Good to have

• Basic knowledge of REST API and relational databases
• Basic understanding of browser internals
• Familiarity with web components and shadow DOM
• Exposure to progressive web app design.

About QuantInsti®

QuantInsti® was started in 2010, by the founders from iRage – a leading quant and algo trading firm in India.  From its early days focused on bridging the industry knowledge gap in the field of high-frequency trading, we have come a long way in the last decade. Today, we have a user base from 180+ countries with a growth rate much over 50% year-on-year.

At QuantInsti®, we swear by our goal of revolutionizing the way people approach the financial markets by empowering individuals and institutions with bleeding edge education and technologies. We offer high quality https://www.quantinsti.com/epat">learning experience and best-in-class https://quantra.quantinsti.com/">courses geared towards a global audience in quantitative trading and investing. Our in-house developed technology aims to bring institutional grade tools and https://quantra-blueshift.quantinsti.com/">platforms to democratize systematic and quantitative trading.

We achieve this by putting technology at the core of our business. We have a complex ecosystem of microservices and applications deployed over a fully cloud-based infrastructure. Our tech stack includes Node.js, Vue.js, Python and Docker. The team is driven by user experience, with strong focus on delivering scalable software solutions to complex and evolving business goals.

Why you should join us?

At QuantInsti, we work at the cutting edge of FinTech and EdTech offerings. We work with the newest technologies with a goal of delivering best experience to our users in a scalable manner, with high-performance and availability. If you love to be challenged intellectually, rest assured we have plenty of them for you. We follow an open and free work culture, where you are encouraged to ask questions, learn and teach. We offer a fast-paced environment where you take ownership of what you design and deliver. If you are looking for a move where you will find a reason to wake up every morning and rush to work, come join us.

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The ValidateMe Online platform enables the users to securely store and share their employment, educational and personal documents. ValidateMe uses blockchain technology to maintain the privacy of the documents and ensures that only the owners have the authority to view or share the documents. It acts as a common platform for users and organizations, educational institutes and universities to complete the background process seamlessly and quickly.

What You Will Do

• Lead the delivery of high quality, innovative, flexible, and scalable technical solutions that meet business requirements
• Perform hands-on development and provide thoughtful code reviews
• Mentor and lead development team members to continuously improve quality and productivity to achieve business results
• Design, develop, test and support applications and services using React, NodeJS, mongoDB, blockchain and others.
• Engage in requirements analysis and product engineering discussions, leading to delivery of high-quality user stories and acceptance criteria.
• Conduct Proof of Concepts for testing business ideas.
• Recommend ways to improve reliability, maintenance, efficiency, and quality.
• Follow SCRUM Agile Development methodology
  
  

What You Will Need

• 6+ years of relevant experience
• Advanced knowledge of software development methodology, techniques & standards.
• Strong understanding of software design concepts, patterns, tools and best practices.
• Must have full stack experience using NodeJS, React and NoSQL Databases.
• Must have worked on at least one cloud platform.
• Should have built and used a REST API.
• Experience with mongoDB is a plus.
• Experience with blockchain technology is a plus.
• Background building container using docker and deploying using Kubernetes is a plus.
  
  

Who You Are?

• One with excellent communication and prioritization skills.
• Owns success – Takes responsibility for the successful delivery of the solutions.
• Strong desire to improve upon one’s skills in software development, frameworks and technologies

What We Offer

• Limitless growth and learning opportunities.
• A collaborative and positive culture — Your team will be as smart and driven as you.
• Outstanding compensation, including attractive Employee Stock Options.
• A chance to make an impact — Your work will contribute directly to our strategy.