We are looking for aSenior Full Stack Developerwith strong expertise inJavaScript/TypeScriptand hands-on experience acrossmodern frontend and backend technologies. The ideal candidate should be comfortable building scalable, high-performance web applications and collaborating closely with product, design, and engineering teams.
Key Responsibilities
- Design, develop, and maintainscalable full-stack web applications.
- Build responsive and performantfrontend applications using React.js.
- Develop and maintainbackend services using Node.js and Express.js.
- Design and optimizeSQL and NoSQL databasesto ensure data integrity and performance.
- Build, consume, and documentRESTful APIs(GraphQL exposure is a plus).
- Write clean, maintainable, and testable code following best practices.
- Participate incode reviews, branching strategies, and release processes.
- Collaborate with cross-functional teams to translate requirements into technical solutions.
- Ensure application performance, security, and scalability.
- Contribute to CI/CD pipelines and deployment processes.
Required Technical Skills
- Strong experience withJavaScript and TypeScript.
- Expertise inReact.js, includingHooks, Context API, and state management (Redux / Zustand preferred).
- Solid backend development experience withNode.js and Express.js.
- Hands-on experience with either:
- PostgreSQL(PERN stack)
- MongoDB(MERN stack)
- Strong understanding ofSQL and NoSQL database design principles.
- Experience in building and consumingREST APIs.
- Basic knowledge ofGraphQLis a plus.
- Familiarity withORMs/ODMssuch asSequelize, Prisma, or Mongoose.
- Proficiency withGit, branching strategies, and code review practices.
- Understanding ofDocker,CI/CD pipelines, and cloud platforms (AWS).
Nice to Have
- Experience working withNext.js.
- Exposure tomicroservices architecture.
- Knowledge ofmessage queuessuch asKafka or RabbitMQ.
- Experience building or maintaininghigh-scale or multi-tenant systems.
Soft Skills
- Strong problem-solving and analytical skills.
- Good communication and collaboration abilities.
- Ability to take ownership and work independently.
- Adaptable and eager to learn new technologies.

About Sigma Infosolutions
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- Proven experience as a Full Stack Developer with hands-on expertise in Core Java, Angular/ React and SQL.
- Good expertise in microservices.
- Good experience in cloud platform, AWS preferred.
- Experience with RESTful services and APIs.
- Solid understanding of object-oriented programming principles.
- Familiarity with version control systems like Git.
- Excellent problem-solving skills and attention to detail.
- Strong communication skills and the ability to work well in a team environment.
Job Description
We are building a AI first employee referral product for SMBs that is going to change the way employee referrals are handled. We combine modern web technologies and cloud services to deliver a seamless experience both for the organizations and users .
- What You’ll DoBuild and maintain responsive, accessible UIs using React/Next.js, Tailwind CSS, and ShadCN UI
- Develop and scale backend services in Node.js, exposing clean REST or GraphQL APIs
- Integrate with Firebase and AWS for core functionality
- Collaborate with product and design to translate requirements into production-ready code
- Write clear, maintainable tests (unit, integration, end-to-end) and participate in code reviews
- Leverage AI-assisted tools like ChatGPT (and other productivity tools) to work effectively and solve problems faster
- What We’re Looking For1–2 years of professional full-stack development experience
- Strong proficiency in JavaScript/TypeScript, with hands-on work in React and Next.js
- Comfortable styling with Tailwind CSS and building component systems (e.g. ShadCN UI)
- Solid experience in Node.js backend development and API design
- Familiarity with Firebase services and basic AWS SDK usage
- Good understanding of Git workflows and CI/CD practices
- Ability to pick up new tools and frameworks (“and much more”) as needed
- Excellent communication skills, a collaborative mindset, and a bias for action
- Nice to HaveBasic experience with Docker or containerized deployments
- Exposure to GraphQL or server-side rendering best practices
- Any prior work leveraging AI-powered tooling for development productivity
- What We OfferA chance to shape a core product from the ground up
- Flexible, remote-friendly work environment
- Competitive compensation and learning stipends
- A supportive, knowledge-sharing culture with regular hackathons
Location: Noida Sector 142
Experience: 3+ years
Employment Type: Full-Time
Key Responsibilities
- Development: Design, develop, and maintain scalable, high-performance web applications using Node.js and React.js.
- Database Management: Work extensively with PostgreSQL and Prisma ORM to design, optimize, and maintain databases.
- API Integration: Build and integrate RESTful APIs and third-party services to enhance platform functionality.
- E-commerce Projects: Develop and enhance e-commerce solutions, ensuring seamless user experiences and efficient backend operations.
- SaaS Development: Contribute to the development of SaaS-based features and services, ensuring multi-tenant support and scalability.
- Microservices Architecture: Design, build, and deploy microservices to support modular and scalable applications.
- Code Quality: Write clean, maintainable, and well-documented code while adhering to best practices and coding standards.
- Collaboration: Work closely with product managers, designers, and other developers to deliver high-quality solutions within deadlines.
- Troubleshooting: Identify and resolve performance bottlenecks, bugs, and other technical issues.
Required Skills and Qualifications
- Technical Proficiency:Strong expertise in Node.js and React.js.
- Proficient with PostgreSQL and experience using Prisma ORM.
- Hands-on experience with API development and integration.
- Knowledge of e-commerce platforms and their technical requirements.
- Experience in SaaS product development and multi-tenant architecture.
- Familiarity with building and maintaining microservices architectures.
- Version Control: Strong understanding of Git and version control practices.
- Testing: Experience with unit testing, integration testing, and debugging tools.
- DevOps Knowledge (Preferred): Familiarity with CI/CD pipelines, containerization (Docker), and cloud platforms (AWS, GCP, or Azure).
- Soft Skills: Strong problem-solving abilities, attention to detail, and excellent communication skills.
Preferred Qualifications
- Experience with e-commerce frameworks or libraries.
- Familiarity with GraphQL and WebSocket implementations.
- Knowledge of performance optimization techniques for web applications.
What We Offer
- Salary + ESOPs
- Opportunity to work on cutting-edge technology in a fast-paced environment.
- Collaborative and inclusive work culture.
- Professional development and learning opportunities.
Apply Now: If you are a passionate developer looking to contribute to impactful projects.
Minimum Skills :
- Creating RESTful services with Node.js (Express)
- React & React Native
- Mongoose & MongoDB.
Candidate must have good Knowledge of Node Debugging, understanding & proficiency in REST APIs, integration of data storage solutions (NoSQL DB especially MongoDB) and should be comfortable with using Git Repository and Jira.
Preferred Skills :
- Hands-on experience with Ubuntu-based servers
- Hands on experience in deploying on Digital Ocean Droplets
- Hands on experience with google maps integration
We are looking for immediate joiners. Candidates that can join the company within 15 days will be given more preference.
Exp: 3-5 yrs
Notice Period: Immediate Joiners
Location: Bangalore
Looking for candidates with experience in MERN Stack Development
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.
Requirements
- Minimum 2+ years' experience as a software developer.
- Highly experienced with backend programming languages - NodeJs or Java etc, Highly experienced with front-end programming languages - HTML, CSS JavaScript, etc Proficient experience using - advanced JavaScript libraries and frameworks.
- Familiarity with Git.
- Experience consuming API endpoints.
- Good to have - Kafka/queuing system
- Should be well-versed in using multiple Databases - SQL/NO SQL.
- Should have experience using in- memory Data Bases-Redis.
- Experience with Unit-Testing.
- Experience building web applications with responsive design.
- Experience with Node.js and/or other server-side JavaScript technologies and tools.
- Strong knowledge of design principles, user interfaces, web standards and usability.
- ES6 React JS/JSX, Redux, Web pack, Immutable.js .
Desired Skills and Experience
Under broad guidance, performs activities related to the analysis, design, programming, debugging, modification, and maintenance of software enhancements and/or new products.
Essential Functions
• Under broad guidance, analyzes, designs, programs, debugs, modifies, and maintains software enhancements and/or new products used in local, networked, or Internet-related computer programs.
• Under broad guidance, may interact with users to define system requirements and/or necessary modifications.
• Prepares feasibility studies to evaluate requirements for new and revised programs.
• Translates detailed design specifications into computer program instructions, debugs routine programs, prepares system test data and prepares program documentation.
• Completes documentation and procedures for installation and maintenance.
• Code may be used in commercial or end-user applications, such as desktop applications, mobile apps, financial management.
• Using current programming language and technologies, writes code, completes programming, and performs testing and debugging of applications.
Technical Requirements:
- Desired Skills: ReactJS, JavaScript, NodeJS, ExpressJS, Redis, mySQL, Json, Ajax, HTML5, CSS3,webRTC, RestFul Services, AWS/EC2/SQS/RDS/S3 and Git.
- Create RESTful based APIs in XML,JSON etc.
- Java, nice to have









