Tech Lead - Full Stack

Job Title : Senior Java Developer

Experience : 5+ Years

Location : Bangalore

Job Type : Contract / Contract-to-Hire

Shift : U.K. Shift (01:30 PM IST to 10:30 PM IST)

Job Summary :

We are looking for a highly skilled Senior Full Stack Java Developer to join our dynamic team. The ideal candidate will have strong expertise in both backend and frontend development, with proven experience in building scalable enterprise applications. This role requires proficiency in Java, Spring Boot, JSP, MySQL, HTML, CSS, JavaScript, jQuery, and Bootstrap, along with excellent communication skills to collaborate with global teams in a U.K. shift.

Mandatory Skills : Java, Spring Boot, JSP, MySQL, HTML, CSS, JavaScript, jQuery, Bootstrap, Software Design Patterns, Debugging & Performance Optimization.

Key Responsibilities :

• Design, develop, and maintain scalable full-stack applications.
• Build robust backend services using Java, Spring Boot, JSP, and MySQL.
• Develop responsive and user-friendly UI components with HTML, CSS, JavaScript, jQuery, and Bootstrap.
• Optimize database queries and ensure application performance and scalability.
• Apply best practices and design patterns for maintainable, clean, and efficient code.
• Collaborate with cross-functional teams across geographies to deliver quality solutions.
• Conduct code reviews, debugging, testing, and deployment activities.
• Support international clients by working in the U.K. shift.

Must-Have Skills :

• Strong expertise in Java (Core & Advanced) and Spring Boot.
• Hands-on experience with JSP, MySQL, and backend service development.
• Proficiency in HTML, CSS, JavaScript, jQuery, and Bootstrap.
• Solid understanding of software design patterns and architecture.
• Strong skills in debugging, problem-solving, and performance optimization.
• Excellent communication and collaboration abilities.

Tech Stack

Frontend: React.js, TypeScript, Next.js, React Native, Redux, GraphQL, Tailwind CSS

Backend & Infra: Java (Spring Boot), Microservices, AWS ECS, Redis, ScyllaDB, MongoDB,

GraphQL, AWS Lambda, MySQL, Aurora

Event Driven & AI: SQS, Kinesis, Claude, Cursor, LangChain

Observability: Prometheus, Grafana, CloudWatch, Sentry

Engineering Excellence: JVM tuning, GC profiling, Circuit Breakers, Async Tracing

We’re hiring an experienced Full Stack Engineer (React + Java) with 5–10 years of

experience to design, build, and scale real-time web applications for our global B2B

hotel marketplace.

You’ll work across the stack—from building intuitive, data-driven UIs to

high-performance backend services that power our distribution engine.

Responsibilities

● Build and maintain end-to-end features spanning React.js frontends and Java

(Spring Boot) microservices and database integrations .

● Develop responsive, performant, and accessible UIs integrated with REST

and GraphQL APIs.

● Design and scale low-latency, high-throughput microservices for real-time

data workflows.

● Implement event-driven systems using Kafka or SQS for asynchronous

communication.

● Collaborate closely with Product, Design, and Architecture teams to translate

business requirements into scalable technical solutions.

● Optimize application performance via caching strategies, async processing,

and database tuning.

● Implement and maintain CI/CD pipelines, test automation, and monitoring

frameworks.

● Leverage AI-assisted tools (Claude, Cursor, etc.) to boost velocity and maintain

code quality.

● Participate in code reviews, design discussions, and architecture decisions.

● Write clean, maintainable code, follow design patterns, maintain high test

coverage, and document key technical decisions.

Requirements

● 6–10 years of full stack development experience with a proven track record in

production systems.

● Strong proficiency in React.js, JavaScript/TypeScript, Redux (or similar state

management) and modern frontend frameworks.

● Solid backend experience with Java, Spring Boot, and Hibernate.

● Database experience with MySQL, MongoDB, or ScyllaDB.

● Hands-on with microservices, AWS (ECS/Lambda), SQS, and GraphQL.

● Familiarity with event-driven architectures and caching layers (Redis) and

asynchronous processing.

● Working knowledge of observability tools (Prometheus, Grafana, CloudWatch,

Sentry).

● Understanding of data structures, algorithms, and system design

fundamentals.

● Passion for clean code, testability, and engineering excellence.

● Strong analytical and communication skills with the ability to collaborate across

Product, Design, and QA teams.

● Comfortable in a remote-first, asynchronous, and ownership-driven culture.

Nice to Have

● Experience with React Native or mobile web frameworks.

● Exposure to Kafka, Kinesis, or other event-streaming platforms.

● Familiarity with CI/CD (GitHub Actions, Docker) and container orchestration

(ECS).

● Experience with AI-assisted development, LLMs, or LangChain pipelines.

● Domain exposure to B2B platforms, travel-tech, or high-scale marketplaces.

● Background in Test-Driven Development (TDD) or Agile methodologies.

Why Join Us?

● Work on mission-critical, high-scale systems used by global hotel brands.

● Build real-time, low-latency products impacting millions of hotel transactions

daily.

● Be part of a remote-first, AI-accelerated engineering culture that values

autonomy and quality.

● Collaborate with senior engineers and architects solving complex distributed

system challenges.

● Competitive compensation with equity participation and career growth

opportunities.

● Learn and work with cutting-edge AI tools—from code generation to

observability automation.

Description:

We are looking for a highly motivated Full Stack Backend Software Intern to join our team. The ideal candidate should have a strong interest in AI, LLM (Large Language Models), and related technologies, along with the ability to work independently and complete tasks with minimal supervision.

Responsibilities:

• Research and gather requirements for backend software projects.
• Develop, test, and maintain backend components of web applications.
• Collaborate with front-end developers to integrate user-facing elements with server-side logic.
• Optimize applications for maximum speed and scalability.
• Implement security and data protection measures.
• Stay up-to-date with emerging technologies and industry trends.
• Complete tasks with minimal hand-holding and supervision.
• Assist with frontend tasks using JavaScript and React if required.

Requirements:

• Proficiency in backend development languages such as Python or Node.js
• Familiarity with frontend technologies like HTML, CSS, JavaScript, and React.
• Experience with relational and non-relational databases.
• Understanding of RESTful APIs and microservices architecture.
• Knowledge of AI, LLM, and related technologies is a plus.
• Ability to work independently and complete tasks with minimal supervision.
• Strong problem-solving skills and attention to detail.
• Excellent communication and teamwork skills.
• Currently pursuing or recently completed a degree in Computer Science or related field.

Benefits:

• Opportunity to work on cutting-edge technologies in AI and LLM.
• Hands-on experience in developing backend systems for web applications.
• Mentorship from experienced developers and engineers.
• Flexible working hours and a supportive work environment.
• Possibility of a full-time position based on performance.
• 
  

If you are passionate about backend development, AI, and LLM, and are eager to learn and grow in a dynamic environment, we would love to hear from you. Apply now to join our team as a Full Stack Backend Software Intern.

We are seeking a highly skilled and experienced MERN (MongoDB, Express.js, React, Node.js) Stack Developer to join our dynamic development team. As a MERN Stack Developer, you will be responsible for designing, developing, and maintaining scalable web applications using the MERN stack framework.

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Expertise in backend programming with Node.js and MongoDB.
• Experience with React.js and redux.
• Material UI and 3rd party libraries.
• Experience with clean code writing practices like avoiding callback hell like promises, async.
• Thorough understanding of Node.js and its core principles.
• Experience with popular React.js workflows (such as Flux or Redux).
• Familiarity with newer specifications of ECMAScript.
• Experience with data structure libraries (e.g., Immutable.js).
• Familiarity with RESTful APIs.
• Knowledge of modern authorization mechanisms, such as JSON Web Token.
• Familiarity with modern front-end builds pipelines and tools.
• A knack for benchmarking and optimization.
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial).

Responsibilities:

• Build Node.js APIs using microservices.
• Rewriting backend code with microservices architecture & Unit tests.
• Developing new user-facing features using React.js.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• 
  

Role Objectives 

• Participate in complex design and software development tasks within an appropriate schedule, task, and quality guidelines set in conjunction with the Senior Platform Specialists and Platform Architect  

• Hands-on development and implementation of solutions including configuration of our platform components and custom development 

• Tasks associated with testing and documentation of solution implemented 

Academic Qualification
B.E/B.Tech/MCA in computer science Engineering or a related field. 

Experience Profile  

4 to 10 years of experience in development or platform implementations. 

Required Technical Skillset for Java Development
Java/J2EE, HTML, CSS. JavaScript, SQL, Servlets, Spring Boot, Hibernate, Web services, SOAP, Restful API

Good to have:
Knowledge in Liferay themes & hooks, Ant, Maven, CI/CD, AWS/GCP/Azure, Docker experience 

Must be capable of coding and unit testing their own code
Team player with good interpersonal skills
Should have strong analytical skills                                                     
Good communication skills
Capable of juggling several priorities and delivering results on time in a high-pressure, dynamic environment.

●       Deep knowledge and hands-on experience of Java & UI stack.

●       Proficient experience of web technologies, frameworks and tools like HTML, CSS, JavaScript, React, NodeJS, XML, jQuery, Spring, etc.

●       Should be well versed with State Management, Redux, Reducers, Java Script, CSS in ReactJS/UI

●       Practical experience of test-driven development and constant refactoring in continuous integration environment.

●       Experience in Oracle PL/SQL programming is required, knowledge of SQL and relational databases

●       Experience working in an agile team, practicing Scrum, Kanban, or XP

●       Experience of performing Functional Analysis is highly desirable.

●       Excellent communication and teamwork skills.

People skills:

●       End to end ownership in driving team towards delivery.

●       Performance and productivity orientation to promote high-quality results.

●       Profound analytical skills and problem-solving abilities.

●       Good communication and excellent interpersonal skills.

●       Pro-active and flexible working approach.

●       Ability to think outside the box to resolve problems.

●       Efficient and well organized, detail oriented.

• Work with development teams and product managers to create software solutions.
• Design client-side and server-side architecture.
• Build the front-end of applications.
• Develop and manage well-functioning databases and applications.
• Write effective APIs.
• Test software to ensure responsiveness and efficiency.
• Troubleshoot, debug and upgrade software.
• Create security and data protection settings.
• Build features and applications with a mobile responsive design.
• Write technical documentation.
• Work with data scientists and analysts to improve the software.

Qualifications:

Degree in Computer Science, Software Engineering or relevant field.
Experience with Java, Spring, and Restful API's.
Experience with Database development (MySQL, Postgres, etc).

Proven experience as a Full Stack Developer or similar role. Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, jQuery).
Knowledge of multiple back-end languages (e.g. Java, Python) and JavaScript frameworks (e.g. Angular, React, Node.js).
Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache), and UI/UX design.
Experience with AWS or other cloud environments

NetSysCon is looking for a Full Stack Engineer for a travel/airline SaaS start-up. They have partnered with major airlines and entertainment brands such as Disney Theatrical Group, Qantas, Iberia, Alaska, Malaysia Airlines, Vistara, IndiGo, Volaris, and others. Their platform offers innovative tools to drive revenue, operational efficiency, and digital shopping conversion.

Job Profile

Work on all elements of the stack from data modeling and back end API's to UI implementation.
Working with airlines on integrations deep within their systems (in person, if you like!).
Assisting with key architecture, platform and infrastructure design.
Ensuring the system runs and scales smoothly, with high availability and resilience to failure.

What we use:
Python, Django, Celery
React, TypeScript
Scikit-learn, PyTorch, Tensorflow
Postgres, Redis
Kubernetes, Docker, AWS, Terraform, CDK, Github Actions

Our client is a tech company first so engineering is the largest, most important department. They care about developer ergonomics and believe investing time and effort in getting software and platform right is not-negotiable. They have:

A comprehensive automated unit test suite (frontend + backend);
Fully automated CI/CD (git push is all you need);
Fully containerized / reproducable dev environment (single-command bootstrap);
Redundant, self-healing, auto-scaling infrastructure;

Requirements

Full-stack engineering experience in at least one of the following languages/frameworks - Backend: Python/Django (preferred), Ruby/Rails, Node;
Frontend: React (preferred), Angular, Vue.
Evidence of exposure to architectural patterns of large, complex web applications (eg, well-designed APIs, asynchronous data pipelines/message queues, distributed systems).
Engineers who have experience with software best practices such as unit testing, reusable components, traceability.