Full Stack Engineer

Job Title: Full Stack Developer (Node.js + React.js)Location: Mohali Employment Type: Full-time Experience: 5+ years (minimum 2 years in travel domain preferred)Job Summary:We are seeking an experienced Senior Full Stack Developer to join our team and help design,develop and scale secure, high performance web applications for the travel industry. You’ll work across front end (React.js), back end (Node.js) and database layers, while architectingmicroservices, integrating third party travel APIs and building webhooks for real time dataflows. The ideal candidate understands the travel domain, embraces clean architecture, datasecurity and loves solving complex problems with elegant code.Key Responsibilities:Build modern, responsive and feature rich front ends using React.js, functionalcomponents and advanced state management (Redux / Context).Develop scalable back end services and APIs in Node.js (Express.js / Nest.js), using amodular, microservices based architecture.Integrate external travel APIs (GDS, hotel/car/flight aggregators or custom vendor APIs)and build webhooks for real time updates (e.g., booking confirmations, cancellations).Architect and implement secure data flows, including handling of PNR data, customerprofiles and fare/rate data.Design and optimize normalized relational database schemas (PostgreSQL, MySQL)and manage NoSQL collections (MongoDB) when needed.Optimize database performance with indexing, query tuning and caching strategies(Redis).Ensure application and data security: encryption, secure authentication (JWT, OAuth2),validation and adherence to PCI and OWASP best practices.Write unit, integration, and end to end tests to maintain code quality.Collaborate with product, QA and design teams to translate complex travel businessrequirements into scalable technical solutions.Participate in code reviews and mentor junior developers.Document technical decisions, API contracts, data models and workflows.Monitor application performance and propose improvements for scalability, faulttolerance and cost efficiency.Required Skills:Frontend Development (React.js):Strong experience with React.js, Hooks, Context API, Redux, and building modular UIcomponents.Proficiency in HTML5, CSS3, SCSS/SASS and responsive design principles.Familiarity with build tools (Webpack, Babel, Vite) and frontend testing (Jest, ReactTesting Library, Cypress).Backend Development (Node.js & Microservices):Solid hands-on Node.js with Express.js or Nest.js frameworks.Experience designing RESTful APIs, knowledge of GraphQL is a plus.Architecting applications using microservices for scalability and maintainability.Practical experience consuming and integrating external travel APIs and buildingwebhooks.Database & Optimization:Strong skills in designing normalized schemas, writing efficient SQL queries andoptimizing relational databases (PostgreSQL, MySQL).Working knowledge of NoSQL databases (MongoDB) when appropriate.Experience with ORMs and query builders (Sequelize, TypeORM, Mongoose).Data Security & Compliance:Implement encryption in transit/at rest, secure authentication flows (JWT, OAuth2) andaccess control.Understanding of PCI compliance and secure handling of sensitive customer andpayment data.Familiarity with OWASP Top 10 and real world mitigation strategies.Process & Collaboration:Experience with Agile/Scrum, user stories and technical estimation.Git-based workflows, pull requests and code review practices.Clear technical documentation and communication skills.Domain Knowledge (Travel):Understanding of booking flows, inventory/rate management, availability checks,cancellations/amendments.Familiarity with travel concepts like PNR, GDS, fare/rate APIs and vendor integrations.Good to have:TypeScript experience.Experience with CI/CD (GitHub Actions, GitLab CI/CD, Jenkins).Containerization (Docker) and orchestration (Kubernetes).Cloud platforms (AWS, Azure, GCP).Experience with caching strategies for travel availability/rate data.