Full Stack Technical Lead - Java/React.js in Bombay, भारत

We are looking for a seasoned Fullstack Tech Lead to drive the defined standard architecture, quality, and delivery of both our server-side and client-side systems across the Clients' https://jobeax.com/link/3uuviLFiFzrwNzok will own the full product stack - designing scalable backend microservices with Java and Spring Boot, and delivering polished, performant frontends with https://jobeax.com/link/6WcBICn0LM558SP0 and https://jobeax.com/link/WkLRQisI9YzPZLWl a tech lead, you will mentor engineers, implement the defined technical standards across the entire stack, and partner closely with product, design, and DevOps teams to ship high-quality features https://jobeax.com/link/g6UtTUrMMykkzpAP Responsibilities :1. Leadership & Architecture :- Implement and contribute to fullstack technical architecture decisions across backend (Java/Spring Boot) and frontend (https://jobeax.com/link/k4XJfV2b4rylTcSt domains.- Define and enforce coding standards, API design guidelines, and fullstack engineering best practices team-wide.- Conduct thorough code reviews on both frontend and backend pull requests, fostering a culture of engineering excellence.- Participate in sprint planning, estimation, and backlog grooming as the primary technical authority.- Mentor junior and mid-level engineers through 1:1s, pair programming, and structured knowledge-sharing sessions.- Collaborate with product managers, designers, and DevOps to deliver robust, high-quality features end-to-end.2. Backend - Java - Spring Boot - Microservices :- Contribute to Architecture decisions, develop, and maintain backend microservices and REST APIs using Java and Spring Boot. 80% of the responsibility would be to contribute to code development.- Design event-driven and distributed systems with strong understanding of CAP theorem and eventual consistency.- Integrate with relational databases (PostgreSQL/MySQL) and NoSQL stores (MongoDB/Redis).- Leverage cloud-native services on AWS/GCP - Lambda, ECS/EKS, RDS, SQS/SNS.- Evaluate and integrate message brokers (Kafka/RabbitMQ), third-party services, and cloud-native tools.- Own incident response processes and drive root-cause analysis and post-mortems for backend systems.3. Frontend - https://jobeax.com/link/6WcBICn0LM558SP0 - https://jobeax.com/link/Z30sZYC3jcRenVso :- Define and build modern, responsive web applications using https://jobeax.com/link/6WcBICn0LM558SP0 and https://jobeax.com/link/Z30sZYC3jcRenVso (SSR/CSR, SSG, and ISR strategies).- Lead the development of a scalable component library and maintain a consistent design system.- Optimise frontend performance - Core Web Vitals, code splitting, lazy loading, and intelligent caching strategies.- Integrate frontend applications seamlessly with backend APIs and third-party services.- Champion accessibility (WCAG) and cross-browser compatibility standards across all frontend surfaces.4. Quality, Security & Delivery :- Drive performance optimisation, scalability improvements, and technical debt reduction across the full stack.- Establish and enforce testing standards: unit, integration, contract, and end-to-end tests (Jest, React Testing Library, JUnit 5, Mockito, Playwright/Cypress).- Manage and improve CI/CD pipelines (GitHub Actions/Jenkins/GitLab CI) and containerisation workflows (Docker/Kubernetes).- Work with security and compliance teams to ensure all systems meet regulatory and data-protection https://jobeax.com/link/w1d7bRHtPmfLc8oX Qualifications :- 8+ years of fullstack engineering experience, with at least 3 years in a tech lead or principal engineer role.- Deep expertise in Java (Spring Boot / Spring Cloud) and microservices architecture.- Strong proficiency in https://jobeax.com/link/6WcBICn0LM558SP0 - hooks, context, state management (Redux/Zustand), and performance optimisation patterns.- Solid hands-on experience with https://jobeax.com/link/Z30sZYC3jcRenVso - App Router, SSR/CSR, SSG, ISR, middleware, and API routes.- Strong understanding of REST API design and gRPC.- Experience with relational databases (PostgreSQL/MySQL) and NoSQL stores (MongoDB/Redis).- Hands-on experience with cloud platforms (AWS or GCP) - Lambda, ECS/EKS, RDS, SQS/SNS.- Proficiency in CI/CD pipelines (GitHub Actions/Jenkins/GitLab CI) and containerisation (Docker/Kubernetes).- Strong command of distributed systems concepts - event-driven architecture, modular and loosely coupled design.- Experience with frontend testing (Jest, React Testing Library, Playwright/Cypress) and backend testing (JUnit 5, Mockito, TestContainers) is a must. Unit testing is must using any tool.- Excellent communication skills; ability to translate technical concepts clearly for non-technical https://jobeax.com/link/FfNN38MjANEx2m9w Qualifications :- Experience with message brokers such as Apache Kafka or RabbitMQ.- Familiarity with observability tooling - Prometheus, Grafana, ELK Stack, Datadog.- Knowledge of OAuth 2.0, JWT, and API security best practices.- Exposure to TypeScript, GraphQL, or micro-frontend architecture.- Experience with design systems and Storybook-driven component development.- Open-source contributions or technical publications are a plus. (ref:hirist.tech)