Fullstack Engineer

Senior Software Engineer — JavaScript Full-Stack

Experience: 4–6 years Location: Ahmedabad (Work from Office)

About the Role

We're hiring a senior engineer who can own systems end-to-end on live, production JavaScript/TypeScript applications. You'll work across React frontends, Node backends, and the databases behind them — you don't need to be the deepest expert in every layer, but you should be strong across the stack and able to make architectural calls that hold up.

This role involves real client interaction, technical decision-making, and shipping into production — not just executing tickets. You'll also be someone the mid-level and junior engineers learn from.

What You'll Do

• Design, build, and maintain scalable full-stack applications running in production
• Own technical decisions on architecture, data modeling, deployments, and performance trade-offs
• Debug live issues across the stack, identify bottlenecks, and improve performance
• Participate in client conversations: scoping, technical discussions, demos, and updates
• Review code and raise the team's bar — including the judgment to catch when AI-generated code is subtly wrong, overengineered, or a poor fit
• Mentor junior and mid-level engineers and contribute to team engineering standards
• Continuously evaluate and adopt tools and practices that improve delivery
• Work in an Agile / Scrum setup with regular delivery cycles

Must-Have

• 4–6 years building and shipping production JavaScript/TypeScript applications
• Strong full-stack ability — genuinely comfortable owning both React frontends and Node backends; can architect a feature from UI to data layer
• Deep JavaScript and TypeScript — language fundamentals, async patterns, typing discipline, and the ability to teach these to less experienced engineers
• Strong React — advanced hooks, state management, performance optimization, component architecture, and structuring large apps
• Strong Node backend — REST (and ideally some GraphQL or real-time) APIs, auth, error handling, and integrating third-party services; experience with Express, Nest, or similar
• Solid SQL and NoSQL — data modeling across relational and document paradigms; able to pick the right store for the problem and design schemas that hold up under load and change (PostgreSQL, MySQL, MongoDB, or similar)
• Hands-on AWS — deploying and operating applications, comfortable picking up new services, and debugging issues in production cloud environments
• System design fundamentals — caching (Redis/Memcache), queues, REST/API design, and an understanding of scaling and reliability trade-offs
• Track record on live production systems — operating, supporting, and evolving systems, not only greenfield builds or POCs
• Git workflows in a team — branching, reviews, conflict resolution
• Day-to-day use of AI coding tools (Cursor, GitHub Copilot, Claude Code, or similar) and a point of view on where they help vs. hurt
• Strong communication — can explain technical decisions to clients and non-technical stakeholders
• Independence — breaks down ambiguous problems, designs solutions, and ships without hand-holding

Strong Plus (one or more)

Architecture & Scale

• Microservices, API gateways, event-driven patterns
• Caching strategies, queue-based processing, eventual consistency
• Real-time systems (WebSockets, SSE)

Frontend Depth

• Next.js (SSR/SSG), advanced performance work, design systems
• Accessibility and cross-platform/responsive expertise
• React Native

DevOps / Platform

• CI/CD pipelines, Docker, infrastructure-as-code
• Observability and production monitoring

AI Engineering

• LLM-powered features: RAG, agentic workflows, tool use
• Vector databases (Pinecone, Weaviate, Qdrant, pgvector)
• Prompt engineering, evals, and observability for LLM apps

Nice to Have

• Automated testing depth (unit, integration, e2e)
• Security fundamentals: auth flows, secrets management, OWASP basics
• 
  

Job Title - MERN Stack Developer

Experience Range – 3 to 6 Years

Location- Mumbai (Andheri East)

Mode- 5 Days working from office

Some specific Requirements:

• You have prior experience developing and working on consumer-facing web/app products
• Hands-on experience in JavaScript. Exceptions can be made if you’re really good at any other language with experience in building web/app-based tech products
• Expertise in Node.JS and Experience in at least one of the following frameworks - Express.js, Koa.js, Socket.io .
• Good knowledge of async programming using Callbacks, Promises, and Async/Await
• Hands-on experience with Frontend codebases using HTML, CSS, and AJAX
• Working knowledge of MongoDB, Redis, MySQL
• Good understanding of Data Structures, Algorithms, and Operating Systems
• You've worked with AWS services in the past and have experience with EC2, ELB, AutoScaling, CloudFront, S3
• Experience with Frontend Stack would be added advantage (HTML, CSS)
• You might not have experience with all the tools that we use but you can learn those given the guidance and resources
• Experience in Vue.js would be plus

As a Development Lead, you will oversee and lead a team of software developers. Your primary goal is to guide the team towards successful development of high-quality software, while fostering a collaborative and productive environment.

Responsibilities:

• Oversee the development of scalable, reliable, and cost-effective software solutions

with an emphasis on quality, best-practice coding standards, and cost-effectiveness.

• Build rapid technical prototypes for early validation of new technologies.

• Rapidly identify and resolve technical incidents as they emerge.

• Collaborate effectively with other application teams to help building the right offerings

for our client delivery platform.

• Collaborate with product owners to translate complex business requirements into

technical solutions, providing leadership in the design and architecture processes.

• Stay informed about the latest technology and methodology by participating in industry

forums, having an active peer network, and engaging actively with customers.

• Cultivate a team environment focused on continuous learning, where innovative

technologies are developed and refined through collaborative effort.

Salary is not a constraint and right candidates will be paid up to 28 Lakhs

Key Skills:

• 7+ years of experience as a lead in leading and managing software development teams.

• Proficiency in Backend and Frontend technologies (NodeJS and ReactJS).

• Knowledge of best practices for API development in distributed environments;

• Coding complex modules.

• Code review and enforcing best practices.

• Impeccable written and verbal communication skills with the ability to present, explain

and defend design concepts in team and stakeholder meetings.

• Demonstrated ability to prioritize tasks effectively, delivering work with speed and high

quality.

• Hands-on experience with engineering principles and design patterns.

• Passionate about writing clean, reusable and maintainable code.

• Building a knowledge base of the latest programming trends, best practices, and

methodologies.

Key Responsibilities:

• Frontend Development: Build responsive, modern, and engaging user interfaces using React.js, ensuring a seamless user experience across all devices.
• Backend Development: Design and implement RESTful APIs, manage databases, and handle business logic using Node.js and Express.js.
• Database Management: Build and manage MongoDB databases, including schema design, data modeling, and query optimization.
• Cross-functional Collaboration: Work closely with UX/UI designers, product managers, and other developers to deliver high-quality, performant web portals.
• Performance Optimization: Implement best practices for performance tuning, scalability, and reliability across both frontend and backend.
• Code Quality: Write clean, maintainable, and efficient code, adhering to best practices, and conduct code reviews for your peers.
• Testing and Debugging: Write unit and integration tests, and debug issues to ensure stability, security, and quality in production.

Qualifications:

• Proven experience (3+ years) in full-stack web development using the MERN stack (MongoDB, Express.js, React.js, Node.js).
• Strong understanding of HTML5, CSS3, and JavaScript (ES6+), along with modern JavaScript frameworks and libraries.
• Experience with state management in React (e.g., Redux, Context API).
• Solid understanding of RESTful API design, asynchronous programming, and Node.js server-side development.
• Hands-on experience with MongoDB and integrating databases with Node.js.
• Familiarity with modern development tools and workflows such as Git, CI/CD pipelines, and containerization (Docker).
• Strong problem-solving abilities and an eye for detail.
• Ability to work in an agile development environment, with a focus on continuous delivery and iterative improvement.
• Excellent communication skills and the ability to collaborate effectively with cross-functional teams.

Preferred Qualifications:

• Familiarity with additional frontend technologies such as TypeScript, GraphQL, or Next.js.
• Experience with cloud platforms (AWS, Azure, GCP) and serverless architectures.
• Knowledge of performance optimization techniques and scalability best practices.
• Understanding of DevOps processes, containerization, and microservices architecture.

Why Join Us?

• Innovative Projects: Work on cutting-edge, high-impact projects that challenge your technical skills and creativity.
• Collaborative Culture: Join a team of talented professionals who are passionate about technology, learning, and continuous improvement.
• Career Growth: We offer opportunities for mentorship, skill development, and career advancement.
• Flexible Work Environment: Enjoy a healthy work-life balance with options for remote work, flexible hours, and more.

Full-stack Developer

CAST is the market leader in Software Intelligence. Its unique technology thoroughly examines the structure of complex software systems, with MRI-like precision. It delivers accurate, actionable, and automated views of software architecture, critical flaws, quality grades, sizing metrics, open source usage, and cloud readiness levels. Hundreds of companies rely on CAST for greater objectivity in crucial business decisions, faster application modernization for Cloud, raising the quality and security of their custom software. CAST operates globally with offices in North America, Europe, India, China.

Title: Software Developer

Location: Bangalore

Job definition

Working at CAST R&D means being an important part of a highly-talented, fast-paced, multicultural and Agile team based in Paris (France) and Bangalore (India). The team builds sophisticated source code analysis platform leveraging parsing, control flow, data flow and others mechanisms to fully understand the inner structure of the complex IT Systems developed and used by the Fortune 500 companies.

You, working as individual contributor, will be integrated in Dashboard Teams working on web portals of CAST AIP. Your teammates will be located in India and in France and you will have the opportunity to travel to France every year.
You will collaborate to writing and designing new features and improve existing ones. You will write unit tests and drive code reviews. You will participate into best practices definition and technology watch. Depending on will, skills and experience, you will have the opportunity to take technical lead on topics or projects.

While the domain of CAST is a niche, the position will propose you to work on software that dedicate to company Dashboards and control software, focusing on technical and creative skills.

Profile

• Experience : 3-6 years
• Experience in developing front-end/full stack applications at scale

• Should have experience in any of the front-end framework like React, Angular, BackboneJS, Ext etc and HTML/CSS/Bootstrap .
• Experience in backend technologies like GOLANG, NodeJS, Python, REST web services and Java(OOPS, Collections, DB Access) or any other technology.

• Hands on experience in JavaScript Concepts (OO-JS, Closures, Unit Testing, Module Patterns etc)

• Good to have skills like REST, Bootstrap, UI Components, CI/CD, NoSQL based DB is added advantage.

• Experience with advanced CSS programming using LESS or SASS is a plus.
• Expertise in of server side technologies and SQL/NoSQL is a plus.
• Experience of JavaScript testing frameworks like Karma, Mocha, Jest etc.

• It involves design the software system, Select algorithms, theories or technologies that will be used for BUSINESS Applications
• Contribute to software development design discussions for new features and new product development
• Strong Problem solving skills and ability to troubleshoot applications & environment issues.
• Adaptability, ability to learn faster, Independent, responsible and diligent.
• Good team spirit and interpersonal skills, Excellent Written, Verbal, communication skills, Analytical skills & Business Thinking.

The candidate should have a passion for technology and a flexible, creative approach to problem solving. You are autonomous and take responsibility for your work.

Ideally, you know how to write unit tests and maybe even better write them in TDD. You have knowledge in agile methodologies such as Scrum. You know about GIT and the use of continuous integration tools. You have developed single page JS applications end to end.

Candidate should have a bachelor or Master technical degree or equivalent experience. Strong knowledge in software engineering. Proactive Self Starter, creative thinker in designing, developing and supporting applications. Work as part of cross functional, passionate agile project teams to ensure quality is driven into the heart of the development process.

Full Stack /Node. JS/ React.js Developer:

We are looking for  Developers responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements into the application. You will also be responsible for building rich UI components with React.

Skills: Node.js, React.js, MongoDB, Express JS, HTML, CSS.

Requirements:

• Should have experience on Node.js and frameworks available for it, such as Express or StrongLoop. Preferably Express.
• Should have experience in building Rich UI components with React.js.
•  Should have hands on experience on MongoDB.  
• Strong understanding of JavaScript, its quirks and workarounds.
• Knowledge of ES6, ES7 and Object-oriented and functional programming.
• Understanding the nature of asynchronous programming and its quirks and workarounds.
• Should have experience in working on Linux (Ubuntu) Environment and basic linux commands.
• Proficient understanding of code versioning tools, such as Git.
• Good to have knowledge on Redis DB.
• Good understanding of browser rendering behavior and performance.
• Good to have exposure working in an agile development environment.

Ideal Candidate Profile (Essential Attributes)

• Expertise and Prior experience in JavaScript environment [Node JS/ PHP/ React JS/ React Native]
• Prior work experience in B2C start-ups (unicorn scale)
• Excellent coding skills with experience in building system architecture, databases
• Exposure to version control, documentation tools, progress management tools
• Must have built application from scratch and scaled to a sizable user base.

Desirable Attributes

• Experienced to work in agile environment
• Prior experience to host applications on cloud
• Able to work in fast paced evolving environment
• Ability to learn and adopt new tools/ technology

Target Industry/Sector

• Consumer Internet Companies – B2C

Key Responsibility Areas:

This will include but not limited to

• Development and building of large-scale applications which is scalable, high performing and resilient
• Understand product requirement and develop/deploy end-to-end scalable technology systems for our ed-tech business
• Setting up the technology infrastructure to host website and apps for our customers
• Integrate third party tools as per the product requirements
• Own the development and operations of our website, apps and database
• Regularly manage, test and fix issues related to security and performance
• Continuously strive to meet the development timelines with minimum bugs
• Maintain good coding practices to ensure quality, documentation, low maintenance
• Work closely with product owner, business owner and testing team to ensure timely and satisfactory product release
• Regularly stay in touch with technological changes in the industry and implement necessary changes to keep our technology ecosystem updated
• Any other items as deemed necessary for effective functioning and growth of the function

To know more about Centum Learning Ltd. please use the below links.

Brochure: http://centumlearning.com/documents/Centum_Brochure.pdf">http://centumlearning.com/documents/Centum_Brochure.pdf              

Website: http://www.centumlearning.com/">http://www.centumlearning.com/

• Mandatory 5+ years hands-on experience on core Javascript, NodeJs and REST services.
• Familiarity with typescript, advanced javascript ecosystem and MVC architecture.
• Highly experienced in RDBMS (MySQL/Postgres).
• Experience with Tools like Hadoop, GraphQL etc.
• Oriented towards automating and scalable solution approaches.
• Strong technical development experience on effectively writing code, code reviews, best practices code refactoring.
• Experience with various source control tools like GIT, Jenkins CI/CD and Maven.
• Strong experience with containers and container management platforms (Dockers, Kubernetes, etc.).
• Experience working in software development with one or more of the following programming languages; Java, C/C++, C#, Python, JavaScript, and/or Go.
• Experience in Agile development lifecycle methodology.
• Proven problem solving and analytical skills.