FullStack Web Developer

Job Title: Senior Java Full Stack Developer

Locations: Delhi NCR, Hyderabad, Chennai, Pune, Bangalore Experience: 6–13 Years

Employment Type: Full-Time

"Need Immediate joiners or serving notice period candidates only can join in a maximum of 30 days"

About the Role

We are looking for an experienced and highly skilled Java Full Stack Developer with strong backend expertise in Java and hands-on experience in ReactJS for front-end development. The ideal candidate will drive the design, development, and implementation of high-performance, scalable applications that meet business goals.

Key Responsibilities

Backend Development (Approx. 80%)

• Design, develop, and maintain robust and scalable backend services using Java, Spring Boot, and related frameworks.
• Build and optimize RESTful APIs and microservices.
• Collaborate with cross-functional teams to define backend architecture and ensure high availability and performance.
• Troubleshoot complex issues, debug code, and improve overall system reliability.
• Participate in code reviews, design discussions, and technical decision-making.

Frontend Development (Approx. 20%)

• Develop responsive user interfaces and reusable ReactJS components.
• Integrate frontend components with backend services and APIs.
• Ensure high performance, cross-browser compatibility, and seamless user experience.

General

• Work in an Agile/Scrum environment and deliver high-quality software on schedule.
• Maintain robust documentation and follow SDLC best practices.
• Mentor junior developers and contribute to team growth.

Required Skills & Qualifications

• 6–13 years of professional experience in software development, with a strong focus on backend systems.
• Advanced proficiency in Java, Spring Boot, and related server-side technologies.
• Hands-on experience with ReactJS and modern JavaScript.
• Solid understanding of REST APIs, microservices architecture, and web services.
• Strong database skills (SQL and/or NoSQL) and familiarity with schema design.
• Experience with version control (e.g., Git) and CI/CD practices.
• Excellent problem-solving, debugging, and communication skills.

Preferred Skills (Bonus)

• Experience with containerization and orchestration (Docker, Kubernetes).
• Exposure to cloud platforms (AWS, Azure, GCP).
• Knowledge of message queuing (Kafka, RabbitMQ).
• Familiarity with automated testing frameworks and best practices.

Education

• Bachelor’s or Master’s degree in Computer Science, Engineering, IT, or a related field (or equivalent practical experience)

Experienced Senior Full Stack Engineer to Build & Backend for Event Ticketing Platform Using Claude Code

Overview

We have the frontend already built in Replit for both user and admin experiences. We are looking for a very experienced software engineer to design, build, and scale a production ready backend for a high concurrency event ticketing platform.

This role is for a true senior engineer who actively uses Claude Code as part of their daily development workflow, understands how to review and harden AI assisted output, and can ship systems that hold up under real world load, QA, and security testing.

This is not a prototype or demo system. This backend must be reliable, scalable, secure, and extremely well documented.

What You Will Be Building

• Backend services for an event ticketing platform

• Multi tenant architecture supporting thousands of organizers and events

• High concurrency purchase and checkout flows

• Secure user, admin, and system level access controls

• Production deployments with secrets management, middleware, and security layers

• Observability, logging, and metrics suitable for QA and load testing

• A thoroughly documented backend that future engineers can onboard into quickly

Core Engineering Requirements

• 10 plus years of professional software engineering experience

• Expert level experience using Claude Code or equivalent AI coding agents in real production workflows

• Deep experience building backends with Node.js

• Strong experience with Supabase and PostgreSQL

• Experience deploying and scaling applications on Vercel

• Proven experience extending existing codebases safely

• Strong API design and database performance fundamentals

• Ability to reason clearly about concurrency, transactions, and failure modes

Scalability and Performance Expectations

The backend must be designed to support:

• Hundreds of thousands of ticket purchases

• Thousands of concurrent users and tenants

• Large traffic spikes during on sale windows

• Load testing across all major latency percentiles including p90, p95, and p99

• Extremely low tail latency under high concurrency

• Graceful degradation and recovery under stress

You should be comfortable designing and implementing caching strategies, queue based workflows, idempotent operations, locking mechanisms, and transactional safety.

Security and Production Readiness

You must be able to:

• Set up production environments with proper secrets management

• Implement middleware for authentication, authorization, and rate limiting

• Design secure communication between frontend and backend

• Apply industry best practices for security hardening

• Prepare the system to pass penetration testing

• Maintain clean separation of concerns and least privilege access

Documentation and Developer Experience Requirements

High quality documentation is a hard requirement for this role.

You must have experience:

• Using AI powered documentation tools to generate and maintain technical documentation

• Producing clear architectural overviews and system diagrams

• Writing detailed README files and onboarding guides

• Documenting APIs, data models, and critical flows

• Keeping documentation in sync with code changes over time

We expect the backend to be easy to understand, easy to extend, and well explained for future engineers.

How We Evaluate Candidates

We are looking for engineers who can demonstrate:

• Real production systems they have built or scaled

• Clear judgment in how they use Claude Code and validate AI generated output

• Strong opinions on production readiness backed by experience

• The ability to move fast without sacrificing quality or safety

A short paid technical task may be used that involves real backend work with production quality code and documentation.

We are seeking a highly skilled Team Lead – MERN Stack Developer to lead the development and delivery of scalable, maintainable, and high-performance applications using MongoDB, Express.js, React.js, and Node.js. The ideal candidate will have strong technical expertise, leadership skills, and a passion for building innovative solutions. If you have experience in microservices, micro-frontends, message queues, Redis, CI/CD, and best practices for large-scale applications, we’d love to have you on our team.

Key Responsibilities

Technical Leadership & Team Management

• Lead and mentor a team of developers, ensuring smooth collaboration, technical growth, and high-quality deliverables.
• Assign tasks, set priorities, track progress, and ensure project deadlines are met.
• Conduct code reviews to maintain coding standards, ensure maintainability, and improve code quality.
• Promote a culture of innovation, continuous learning, and problem-solving.
• Architect and implement microservices, micro-frontends, and modular micro-apps for scalable and maintainable solutions.
• Collaborate with stakeholders to translate business requirements into technical designs and implementation plans.
• Optimize performance and scalability for large-scale applications with dynamic data flows.

Backend Development (Node.js & Express.js)

• Design and implement secure, scalable backend structures and APIs.
• Develop reusable tools and libraries to support a microservices architecture.
• Handle error management and debugging for seamless application functionality.
• Work with message queues like RabbitMQ, Kafka, or Redis for event-driven communication.
• Use tools like New Relic or Prometheus to monitor and debug production systems.
• Solve challenging technical problems with smart, scalable solutions.

Database Management (MongoDB)

• Design efficient and scalable database schemas for large-scale projects.
• Optimize database performance using indexing, aggregation, and advanced querying techniques.
• Leverage MongoDB features like sharding and replication to handle large datasets efficiently.

Frontend Development (React.js & JavaScript)

• Build and optimize reusable, high-performance React.js components and dynamic user interfaces.
• Develop robust solutions for complex UI interactions, including drag-and-drop functionality.
• Implement efficient state management using Redux, Context API, or React Query.
• Optimize web performance, including DOM manipulation, memory management, and responsiveness.
• Ensure applications adhere to WCAG accessibility standards and provide excellent user experiences.

Best Practices & Continuous Improvement

• Define and enforce coding standards, workflows, and best practices for high-quality development.
• Develop and maintain CI/CD pipelines for automated testing and deployment.
• Write secure and robust code to protect against vulnerabilities like XSS and CSRF.
• Regularly monitor and optimize application performance, security, and scalability.
• Stay updated on the latest trends in MERN stack technologies and software development practices.
• Collaborate with DevOps teams for containerized deployments using Docker and Kubernetes.

Nature of project – Product development.

Key skills: Java full stack developer with React Js experience.

Key Responsibilities

• Advance the state of the art in building Microservices with Java and frontend applications with React JS.
• Design and Develop Cloud based, web applications for SMBs
• Design and develop the front end for customer-facing applications using MVC framework
• Design and develop supporting components and Microservices for the backend tiers focusing on fault-tolerance and scalability in a multi-tenant B2B2C environment
• Team with top-notch engineers, product managers, Dev Ops and QA following agile development methodologies
• Review functional requirements, providing technical feedback on feasibility and architectural approach and framework.
• Develop technical specifications
• Contribute to test plan development.
• Create Prototype and/or Proof of Concepts (POCs) when necessary
• Act in a technical leadership capacity: Mentor junior engineers and new team members, perform code reviews and apply technical expertise to challenging programming and design problems
• Manage and maintain Cloud infrastructure
• Maintain and improve the functionality and performance of the existing web applications; refactor legacy codebase
• Help shape and execute the technical roadmap to develop next generation features; integrate corporate- and product-level architecture principles and goals into the teams project work through designs, implementation strategies, and project planning.
• Drive a culture of quality, technical curiosity, continuous improvement, and evidence-based data driven decision making in the organization.
• Lead team in software development best practices including Peer Code Review, Unit testing, Automated Deployments, and Automated Testing.
• Write technical documentation

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.

• Bachelor's degree in computer science or equivalent experience
• 2+ years of experience in software engineering.
• Experience with building B2B and consumer quality products, enabling business capability and objectives through technology.
• Strong cloud infrastructure experience with AWS.
• Experience in engineering practices such as code refactoring, design patterns, design driven development, continuous integration, building highly scalable applications and application security.
• Experience working with a development team using Agile methodology.
• Experience in container technologies like Docker/Kubernetes a plus.
• Hands-on skills working with SQL and No-SQL databases
  Broad experience across the following application development technologies and in depth skills with at least one: NodeJS, React, GraphQL,Python, R, Java/C++ and/or other open source application development frameworks.
• Ability to strategically balance test coverage, documentation and timelines (API/ Unit testing).
• Strong analytical and problem-solving skills paired with the ability to develop creative and efficient solutions.
• Able to work under competing priorities, manage expectations effectively and support the team under pressure; distinct user focus and quality mindset.

About Us:

Join our team at BSEtec, a leading blockchain solutions provider. We're looking for a skilled Blockchain Developer to help us build the future of decentralized applications and solutions.

Job Description:

As a Blockchain Developer at BSEtec, you'll work on exciting projects that harness blockchain's potential. Your role will include:

Responsibilities:

• Develop blockchain solutions, including smart contracts and dApps.
• Collaborate on cross-functional teams to meet project requirements.
• Stay updated on blockchain trends, protocols, and security.
• Troubleshoot and resolve blockchain tech issues.
• Integrate blockchain into existing systems.
• Ensure security and scalability.
• Document code and maintain project records.
• Help deploy and maintain blockchain networks.
• Contribute to coding standards.

Qualifications:

• Degree in Computer Science or related field.
• Blockchain development experience.
• Proficiency in Ethereum, Solidity, Web3.js.
• Strong blockchain fundamentals knowledge.
• Smart contract experience.
• Familiarity with blockchain tools.
• Problem-solving skills.
• Good communication and teamwork.
• Blockchain certification is a plus.

Experience: 5+ years

Location: Bangalore (Remote)

Roles and Responsibilities

• Design and code features in the front-end and back-end as per the specifications provided by the Product and Design teams.
• Ship features in fast moving agile sprints.
• Work closely with Product Design and Product Management teams to brainstorm and chalk out details of features.
• Ability to build a feature from scratch & drive it to completion.
• Strong skills in architecting database models.
• Ability to document your code as this will be an open-core project.
• Ability to write unit, integration, and end to end tests.
• Conduct peer code review.

Must have:

• Strong understanding of Javascript, Typescript, NodeJS.
• Good understanding of asynchronous programming, callback, and closures.
• Experience developing applications that use queues like SQS, RabbitMQ, Kafka, etc.
• Experience with AWS services like S3, EC2, etc.
• Experience with Docker.
• Strong experience with ReactJS: hooks, functional programming, and optimizing render functions.
• Good knowledge of CSS.
• Experience with creating cross-browser compatible web apps.
• Should be strong in Postgres database.
• Test driven development and use of frameworks like Mocha, Cypress.
• Strong proficiency in English and writing skills.

Good to have

• Basic knowledge of CI, CD
• Intermediate knowledge in any cloud services (AWS, GCP)
• Have created GraphQL APIs or worked with the Apollo framework.
• Have built previous functionality for CRM, marketing, or customer support tools.
• Have worked in open source project previously.