191 Expresjs Jobs - Page 6

Prerequisites and Qualifications 4-8 years of overall experience, including at least 1 year of hands-on development using Node.js. Knowledge of AI model lifecycle : training, fine-tuning, inference, prompt engineering, Retrieval-Augmented Generation (RAG) architecture. Solid understanding of server-side technologies and asynchronous programming. Experience with frameworks such as Express.js. Proficient in working with databases. Strong understanding of RESTful API design and implementation. Familiarity with front-end technologies (HTML, CSS, JavaScript) and their integration with server-side logic. Excellent problem-solving and communication skills. Ability to work collaboratively in a team environment. Job Responsibilities Server-Side Design & Development: Design, develop, and maintain server-side logic using Node.js. Implement RESTful APIs to support frontend applications and other system components. AI Solution Development: Collect and analyze functional and non-functional requirements for AI use cases and develop AI solutions leveraging Retrieval-Augmented Generation (RAG) architecture. Build modular prompt templates (for GPT-like models) and support dynamic construction from user input. Plan how the AI model (or service) fits within the broader application ecosystem. Database Design & Integration: Design & integrate with database to store and retrieve data efficiently. Optimize database queries for performance and scalability. Middleware Development: Build middleware components to handle communication between frontend and backend systems. Implement caching mechanisms to improve application performance. Code Quality and Testing: Conduct code reviews to ensure adherence to coding standards. Implement and maintain unit tests to validate the functionality of server-side components. Collaboration and Communication: Work closely with frontend developers, designers, and other stakeholders to understand project requirements. Collaborate with cross-functional teams to deliver high-quality solutions. Performance & Security: Identify and address performance bottlenecks in server-side components. Optimize server-side code for maximum speed and scalability. Implement security best practices to protect against common web application vulnerabilities. Ensure the secure handling of sensitive data and user authentication.

FullStack development in MongoDB, ExpressJS, ReactJS,Node.JS & CSS Strong experience in TDD/BDD Knowledge of cloud application/platform & web technologies Web servers, especially nginx & Experience with one or more SQL or NoSQL

Key Responsibilities: Develop and maintain scalable full-stack web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js) along with MySQL for relational data requirements Design dynamic, responsive user interfaces using React.js with functional components and hooks Build and integrate RESTful APIs and backend services using Node.js and Express.js Work with both MongoDB (NoSQL) and MySQL (RDBMS) for data modeling, complex queries, and performance optimization Integrate third-party APIs, services, and tools as needed Collaborate with cross-functional teams including UI/UX designers, project managers, and fellow developers Ensure web applications are optimized for maximum performance, speed, and scalability Maintain and manage version control using Git, and collaborate on codebases via GitHub/GitLab/Bitbucket Write clean, maintainable, and well-documented code following best practices and coding standards Requirements: 1.5 to 2 years of hands-on experience in full-stack web development using the MERN stack and MySQL Proficient in JavaScript (ES6+), HTML5, and CSS3 Strong working knowledge of React.js, including component lifecycle, hooks, and routing Solid understanding of backend development using Node.js and Express.js Practical experience with MongoDB and Mongoose ORM for handling NoSQL data Proven experience with MySQL and Sequelize ORM (or similar) for relational database operations including joins, indexing, and stored procedures Comfortable developing and integrating RESTful APIs Familiarity with asynchronous programming (callbacks, promises, async/await) Good understanding of UI/UX principles and responsive design best practices Proficient with Git, including branching strategies and collaborative workflows Strong problem-solving skills with a keen attention to detail Nice to Have: Experience with Redux or other state management libraries Familiarity with server-side rendering frameworks like Next.js or tools like TypeScript Experience working with CI/CD pipelines and DevOps tools Awareness of database performance tuning and optimization (both MongoDB and MySQL) Understanding of security best practices in web application development

Kolkata Location Preferred About the Role: We are looking for a talented Senior Full Stack Developer with extensive experience in the MERN stack, strong command of AWS cloud services, and solid expertise in version control systems (especially Git). The successful candidate will lead end-to-end web development efforts, deploy scalable solutions, and collaborate across teams to deliver impactful digital products. Key Responsibilities: Design, build, and maintain scalable web applications using MongoDB, Express.js, React.js, and Node.js. Architect and manage cloud infrastructure on AWS, ensuring performance, security, and scalability. Develop and maintain CI/CD pipelines for seamless integration and deployment. Work closely with UI/UX designers, product managers, and other developers to implement new features and enhancements. Optimize both front-end and back-end performance. Uphold code quality standards through regular peer reviews and clean coding practices. Manage version control workflows using Git and platforms such as GitHub, GitLab,or Bitbucket. Stay informed on emerging technologies and recommend adoption when beneficial. Mentor junior developers and actively contribute to team knowledge sharing. Required Skills & Qualifications: Minimum 2 years of professional experience with the MERN stack. Deep understanding of key AWS services such as EC2, S3, Lambda, RDS, API Gateway, IAM, and others. Proficiency with Git, including managing branching strategies and collaborative workflows. Experience with Docker is required Kubernetes experience is a plus. Solid grasp of RESTful API design principles. Familiarity with database design and management, primarily MongoDB, with PostgreSQL/MySQL as a bonus. Competence in testing and debugging using tools like Jest, Mocha, or Cypress. Strong communication, analytical, and problem-solving abilities. Bachelors degree in Computer Science, Engineering, or a related field. Preferred Skills: Experience working with Serverless Architecture on AWS. Understanding of Agile/Scrum methodologies. Exposure to microservices architecture and GraphQL.

Role & responsibilities Design, develop, and deploy full-stack web applications across various client domains Gather and analyze client requirements and translate them into technical solutions Participate in daily scrums and sprint planning in an Agile delivery environment Build reusable components and libraries for future use Integrate third-party APIs and services based on client needs Ensure code quality through unit testing, code reviews, and adherence to best practices Optimize applications for speed and scalability Mentor junior developers within the team and provide technical leadership Coordinate with cross-functional teams (QA, DevOps, Business Analysts) Handle production issues and provide technical support for client deliveries Preferred candidate profile Strong hands-on experience with React.js, Redux, Node.js, and Express.js Proficiency in JavaScript/TypeScript, HTML5, CSS3, and RESTful APIs Experience with MongoDB, MySQL, or similar databases Solid understanding of Git workflows, CI/CD pipelines, and agile development Familiarity with cloud platforms such as AWS, Azure, or Google Cloud Excellent communication and client interaction skills

This is a full-time, on-site role for a MERN Full Stack Developer based in Sector 64, Noida. The developer will be responsible for developing, maintaining, and enhancing both front-end and back-end functionalities of web applications. If you're someone who enjoys solving real-world problems, thrives in a fast-moving environment, and takes ownership of your work, we would love to hear from you. Qualifications: 1+ years of hands-on experience in full-stack web development. Hands-on experience developing applications using the MERN stack (MongoDB, Express.js, React, Node.js) Strong proficiency in JavaScript; experience with TypeScript is a plus. Familiarity with Next.js for server-side rendering and advanced frontend patterns. Experience building and consuming RESTful services. Knowledge of Redis and hands-on experience with WebSockets for real-time applications. Familiarity with SQL is expected. Practical understanding of DevOps, with hands-on experience in deploying applications and managing CI/CD workflows. Experience with state management frameworks like Redux. Understanding of cross-browser compatibility issues and workarounds. Ability to design and implement scalable, low-latency, high-availability applications. Proficient in debugging and troubleshooting complex applications. Strong communication and interpersonal skills. Comfortable working independently with minimal supervision. Eagerness to learn, grow, and take on challenging tasks. Knowledge of PHP is a plus.

Backend expertise in Python/Node.js , REST APIs, and databases. Hands-on with AWS , DevOps , and CI/CD pipelines . Frontend skills in React/Next.js . Team leadership, mentoring experience is a plus. Strong backend focus with team/mentoring experience.

Strong proficiency in JavaScript(ES6+) Experience with Node.js and Express.js for backend development , React.js and frontend frameworks/libraries (e.g., Redux, Tailwind CSS, Material UI)Solid understanding of PostgreSQL , Experience with RESTful API

Hiring MERN Stack Developer with 4+ yrs experience in React, Node.js, Express & MongoDB. Budget: 12 LPA. Location: Bangalore (Work from Office). Strong API & DB skills required.

Roles & Responsibilities: Develop and maintain backend services using Node.js Implement event-driven architectures with Apache Kafka or AWS Kinesis for real-time data processing Deploy and manage containerized applications using Docker Design and manage MongoDB databases for efficient data storage and retrieval Work with AWS services (e.g., Load balancer, EC2, S3, Lambda, API Gateway) for scalable cloud solutions Integrate MQTT protocols for IoT and messaging-based applications Configure and maintain Linux-based production environments Read and analyse existing Java code for integration and troubleshooting purposes Implement secure authentication using OpenID Connect (OIDC) Collaborate with development teams to improve system reliability and performance Must have Technical Skills: Strong proficiency in Node.js with experience in frameworks like Express.js or NestJS Hands-on experience with Apache Kafka and event-driven systems Experience with AWS services , including compute, storage, and networking solutions Docker & container orchestration experience for scalable deployments Experience with MongoDB , including schema design, indexing, and performance optimization Basic understanding of Java , with the ability to read and analyse code Good to have: Experience with Kubernetes for managing containers Analysis of Quarkus microservices to ensure best practices and efficiency Understanding of Terraform or CloudFormation for infrastructure setup Knowledge of serverless computing (AWS Lambda, Azure Functions) AWS Certification is a plus Key Competencies: Excellent problem-solving skills and attention to detail Strong communication and teamwork skills Ability to work collaboratively in cross-functional teams Ability to write clean, well-documented, and efficient code

The MERN Stack Architect is a seasoned full-stack expert responsible for designing, developing, and overseeing scalable, high-performance applications using modern JavaScript technologies. This role spans front-end, back-end, and infrastructure architecture, focusing on seamless integration, maintainability, and performance across all layers. The architect will work closely with cross-functional teams to ensure technical excellence and alignment with business goals. Key Responsibilities: Architectural Design Design end-to-end software architecture across the MERN stack (MongoDB, Express, React, Node.js). Define architectural standards and best practices. Technical Leadership Lead development teams and guide implementation with a hands-on approach. Conduct design reviews and ensure adherence to architecture principles. Scalable System Design Design distributed, secure, and high-availability systems to meet business needs. DevOps & CI/CD Implement CI/CD pipelines and automation frameworks in alignment with DevOps practices. Collaborate with DevOps engineers on containerization and orchestration (e.g., Docker, Kubernetes). Database Management Design schemas and optimize queries for both relational (MySQL, Postgres, MS SQL) and NoSQL (MongoDB) databases. Cloud Integration Architect solutions leveraging AWS, Azure, or GCP services for performance, scalability, and cost efficiency. Code Quality & Governance Enforce best coding practices and standards through code reviews, documentation, and mentoring. Stakeholder Collaboration Work with product managers, UX teams, and QA engineers to deliver cohesive, business-aligned solutions. Required Qualifications & Skills 12+ years of software development experience, with 5+ years in an architectural role. Strong expertise in: JavaScript (ES6+), Node.js, React.js Express.js, RESTful APIs Docker and containerized deployment Experience designing and building: Scalable, distributed, and high-performance web systems Microservices and serverless architectures Solid experience with both relational and NoSQL databases (MongoDB, MySQL, PostgreSQL, MS SQL). Strong understanding of CI/CD tools and DevOps processes. Working knowledge of cloud infrastructure (AWS, Azure, or GCP). Ability to analyze trade-offs in architectural decisions and document them clearly. Soft Skills Excellent communication and documentation skills Strong leadership and mentorship abilities Problem-solving and critical thinking Collaborative mindset with cross-functional teams Adaptability to fast-changing technology environments Preferred Qualifications Bachelors or Master's degree in Computer Science, Software Engineering, or related field Experience with TypeScript, GraphQL, and testing frameworks (Jest, Cypress) Familiarity with container orchestration tools (Kubernetes) Certification in cloud platforms (AWS/Azure/GCP) or architectural frameworks Key Relationships I nternal: Product Owners, UI/UX Designers, DevOps, QA, Backend and Frontend Developers External: Clients, Cloud Service Providers, Integration Vendors Role Dimensions Strategic ownership of full-stack architecture Hands-on influence over multiple product lines or platforms Mentorship and technical leadership across engineering teams Success Measures (KPIs) Application uptime and performance metrics On-time delivery of architecture milestones and feature releases Codebase maintainability and test coverage Developer productivity and adoption of architectural patterns Reduction in technical debt and system complexity Competency Framework Alignment Technical Mastery: Expertise in modern full-stack architecture and infrastructure Leadership: Ability to lead and mentor teams through complex projects Execution: Deliver high-quality, scalable, and secure applications Innovation: Drive continuous improvement and adoption of emerging technologies Business Alignment: Understand and translate business requirements into technical architecture

Role & responsibilities Design, develop, and maintain robust and scalable backend services and RESTful APIs using Node.js. Collaborate with frontend developers, DevOps, and product teams to define and implement efficient solutions. Architect and implement microservices and serverless functions where appropriate. Integrate with third-party services and databases (MongoDB, PostgreSQL, Redis, etc.). Ensure code quality through unit testing, integration testing, and code reviews. Monitor and optimize system performance, scalability, and reliability. Maintain and improve CI/CD pipelines and deployment processes. Contribute to technical documentation and participate in Agile development practices Preferred candidate profile Bachelor's or master's degree in computer science, Engineering, or a related field. 6+ years of backend development experience, with at least 3 years focused on Node.js. Proficiency in Node.js, Express, TypeScript, Jest, PostgreSQL. Strong experience with Node.js frameworks such as Express.js, NestJS, or Fastify. Solid understanding of REST APIs, asynchronous programming, and eventdriven architectures. Familiarity with cloud platforms like AWS, GCP, or Azure. Knowledge of authentication and security best practices (OAuth2, JWT, rate limiting, etc.).

We are looking for MERN stack developer with experience in Mongo DB, React.js, Node.Js, ExpressJS

Roles and Responsibilities Design, develop, test, and deploy full-stack applications using Node.js, Express.js, MongoDB, and Redux. Collaborate with cross-functional teams to identify requirements and deliver high-quality solutions. Ensure scalability, security, and performance of developed applications. Participate in code reviews and contribute to the improvement of existing systems. Troubleshoot issues and resolve bugs in a timely manner. Desired Candidate Profile 3-5 years of experience as a Full Stack Developer with expertise in React.js. Strong understanding of JavaScript (ES6+), TypeScript (optional but recommended). Experience working with MongoDB for database management system integration. Proficiency in Express.js for building web frameworks.

Role & responsibilities Position Summary : We are seeking a highly skilled and experience senior developer with a strong background in MERN stack (MongoDB, Express.js, React.js, Node.js) to join our team. The ideal candidate should have 4-6 years of hands-on experience in developing and maintaining applications using MERN stack and will play key role in designing, developing and deploying software applications. Responsibilities : Design, develop and maintain large scale software applications using the MERN stack. Collaborate with cross-functional teams to define, design, and develop new features. Create and Own High-Level Design, Low Level Design for each of the Software applications. Perform code reviews and provide constructive feedback to team members. Troubleshoot, debug, and optimize existing applications for performance and scalability. Mentor and guide junior developers. Collaborate with product manager and other stakeholders to understand. Learn, acquire, and get certified on new technologies as demanded by project Any exposure and experience in AI, ML and Data Science will be of additional advantage . REQUIRED SKILLS Strong proficiency in design, development, maintenance, and support of software applications with proven experience in Node.js React.js (having knowledge of Angular will be an additional advantage) RDMS (Oracle/SQL Server/Postgres) SQL NoSQL databases like Mongo Experience with front-end technologies such as HTML, CSS and JavaScript. Extensive experience in Open-Source Technologies Preferable: Knowledge of database management tools like Liquibase / Hibernate Well-versed in Devops (e.g. Azure DevOps) and cloud PaaS. Cloud-based (AWS/Azure) deployment of models, performance monitoring and troubleshooting Familiarity with Docker and Git Good understanding of coding standards, ability to debug. Good Experience in Software development lifecycle and processes. Excellent written and oral communication skills Ability to work effectively in a cross-functional team. Added advantage: Exposure to AI/ML frameworks in Keras, Pytorch, libraries scikit-learn Knowledge and practical application of statistical analysis and mathematical modeling concepts and principles Location: Mumbai, Pune, Hyderabad, Bangalore, Chennai Contact: Rathna.Priyadharshine@firstsource.com

Must be proficient in AWS with 3 + years of AWS serverless development experience i.e. Lambda, SQS, SNS, API Gateway Expertise in Framework like Express.JS Relational databases e.g. MySQL, PostgreSQL and NoSQL databases e.g. MongoDB, DynamoDB

Professional Summary : Experienced and versatile Senior Full Stack Developer with 6 to 8 years of expertise in building scalable, secure, and dynamic web applications. Proficient in frontend and backend technologies, API development, AI-driven functionalities, and media-intensive features such as image and video processing . Skilled in developing CMS-based solutions, integrating AI/ML models, and coordinating directly with business stakeholders, UI/UX teams, and DevOps for end-to-end product development. Core Competencies : Frontend Development : HTML5, CSS3, JavaScript (ES6+), Bootstrap React.js Responsive and cross-browser design REST API & GraphQL integration Backend Development : Node.js, Django, Python PostgreSQL, MongoDB, MySQL Redis, Kafka AI & Media Work : AI/ML Integration using TensorFlow, PyTorch, or scikit-learn Image & Video Processing using OpenCV, FFmpeg, PIL Face detection, object recognition, media tagging pipelines DevOps & Tools : GCP, Docker, Git, CI/CD pipelines, Version Control (GitHub/Bitbucket) Roles & Responsibilities : Design, develop, and maintain full stack applications across multiple platforms. Build robust and reusable APIs for internal and external use. Implement AI-driven features such as recommendation systems, classification engines, or computer vision components. Manage image and video processing pipelines for media-rich applications. Develop custom CMS solutions tailored for content-heavy websites or SaaS platforms. Collaborate with UI/UX designers, frontend/backend developers, QA engineers, and DevOps teams. Communicate directly with business owners and product managers to gather requirements and translate them into functional deliverables. Ensure performance, scalability, and security best practices in development and deployment. Mentor junior developers, perform code reviews, and lead technical discussions. Professional Experience : Proven ability to lead projects from concept to deployment, especially in domains involving AI, media, and CMS.

Responsibilities: * Design, develop, test & maintain software using Node.JS, ExpressJS & JavaScript * Collaborate with cross-functional teams on project delivery * Ensure code quality through testing & documentation

Key Responsbilitiies : Develop, deploy, and maintain robust machine learning models for real-world business applications. Leverage classical ML algorithms such as regression, classification, bagging, boosting, etc., to address complex business challenges. Build and automate end-to-end ML pipelines using MLOps best practices. Manipulate and analyze large datasets using PySpark and SQL, ensuring data quality and performance optimization. Conduct statistical analyses and derive actionable insights to support decision-making. Collaborate closely with product managers, data engineers, and stakeholders to align ML solutions with business objectives. Present analytical findings clearly and concisely to both technical and non-technical audiences. Design intuitive dashboards and visualizations to track model outcomes and key metrics. Required Skills: Deep understanding of Machine Learning algorithms and Statistical Modeling techniques. Strong programming skills in Python (including pandas, NumPy, scikit-learn, etc.). Proficiency in PySpark SQL for distributed data processing. Advanced expertise in SQL for querying and manipulating structured data. Experience with MLOps frameworks and automation of ML workflows. Proven track record in predictive modeling and classical ML use cases. Strong communication and presentation skills with the ability to translate technical output into business context. Preferred Qualifications: Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform (GCP). Familiarity with data visualization libraries (e.g., Matplotlib, Seaborn, Plotly) or BI tools like Tableau/Power BI. Exposure to CI/CD practices and model monitoring tools.

Hiring Software Engineers with 2+ years of experience in the travel domain. Experience with booking engines, GDS, or travel platforms preferred. Work from office at Rajaji Nagar, Bangalore. Immediate joiners preferred Required Candidate profile Experience in Java/Node.js/asp.net & React.js are preferred from Travel Domain

Responsibilities: * Collaborate with cross-functional teams on project requirements and deliverables. * Develop scalable Node.JS applications using MongoDB and ExpressJS. Work from home

Role & responsibilities We are looking for a Fullstack Developer experienced with Fullstack JavaScript, Cloud and IoT solutions. For the agile development of our web, mobile, and cloud applications and IoT products, building efficient, reliable and scalable solutions. A hands-on coding role, where you will build and manage your own team. Tasks: Development of modern JavaScript- based applications in the back-end Development, implementation and optimisation of innovative IoT products, web apps and new features Technical product design, solution architecture, specifications and implementation of Livello solutions Work with a cross-functional team to define, build, test, and deploy universal applications Version control with Git is part of your daily work and continuous integration Ensure the implementation of technical standards, quality assurance and best practices. Requirements: Bachelor's degree in Computer Science or comparable field of study 2-3 years experience in agile software development Proficiency in Node.js, React js, Mongo DB, Docker along with any cloud Exp (AWS, GCP, Azure) Good to have Experience with GraphQL and Kubernetes as well as state management solutions (Redux, Saga) Experience with test and deployment automation (Gitlab, Fastlane, Jest). Ability to work cooperatively and independently, analytical thinking, willingness to lead and take on responsibility Fluent in English. Nice to have: Experienced in IoT-to-Cloud managed services, Microservices. Knowledge of IoT device management and message brokers like AMQP or MQTT Benefits A responsible position in a fast-growing and highly innovative start-up An agile and diverse team with colleagues from all over the world, working with our main office in Germany English speaking open work environment, with flat hierarchies and short decision-making paths Advanced technology stack leveraging cutting-edge IoT hardware and software Creative freedom for own ideas, projects and personal development.

Strong in Node.js, Express.js, MongoDB, CSS, HTML Minimum 6 months contract.

Hiring Full Stack SDE II with 3-5 years in Node.js, React.js, MySQL, and cloud platforms (AWS/GCP/Azure). Build scalable apps, REST APIs, and ensure performance. Bonus: TypeScript, GraphQL, Docker, microservices, Agile experience. Location: Gurgaon.

MERN (MongoDB, Express.js, React.js, Node.js) Stack Developer with expertise in AWS to, you will be responsible for developing and maintaining robust web applications using the MERN stack while leveraging AWS services for scalability and reliability Required Candidate profile Candidate must have B.Tech (BE) CS or IT & having experience to work on communication like chat system, or any other e commerce