Full-stack Engineer

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.

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.

A niche, specialist position in an interdisciplinary team focused on end-to-end solutions. Nature of projects range from proof-of-concept innovative applications, parallel implementations per end user requests, scaling up and continuous monitoring for improvements. Majority of the projects will be focused on providing automation solutions via both custom solutions and adapting machine learning generic standards to specific use cases/domains.

Clientele includes major publishers from the US and Europe, pharmaceutical bigwigs and government funded projects.

As a Senior Fullstack Developer, you will be responsible for designing, building, and maintaining scalable and performant web applications using modern technologies. You will work with cutting-edge tools and cloud infrastructure (primarily Google Cloud) and implement robust back-end services with React JS with Typescript, Koa.js, MongoDB, and Redis, while ensuring reliable and efficient monitoring with OpenTelemetry and logging with Bunyan. Your expertise in CI/CD pipelines and modern testing frameworks will be key to maintaining a smooth and efficient software development lifecycle.

Key Responsibilities:

• Fullstack Development: Design, develop, and maintain web applications using JavaScript (Node.js for back-end and React.js with Typescript for front-end).
• Cloud Infrastructure: Leverage Google Cloud services (like Compute Engine, Cloud Storage, Pub/Sub, etc.) to build scalable and resilient cloud solutions.
• API Development: Implement RESTful APIs and microservices with Koa.js, ensuring high performance, security, and scalability.
• Database Management: Manage MongoDB databases for storing and retrieving application data, and use Redis for caching and session management.
• Logging and Monitoring: Utilize Bunyan for structured logging and OpenTelemetry for distributed tracing and monitoring to ensure system health and performance.
• CI/CD: Design, implement, and maintain efficient CI/CD pipelines for continuous integration and deployment, ensuring fast and reliable code delivery.
• Testing & Quality Assurance: Write unit and integration tests using Jest, Mocha, and React Testing Library to ensure code reliability and maintainability.
• Collaboration: Work closely with front-end and back-end engineers to deliver high-quality software solutions, following agile development practices.
• Optimization & Scaling: Identify performance bottlenecks, troubleshoot production issues, and scale the system as needed.
• Code Reviews & Mentorship: Conduct peer code reviews, share best practices, and mentor junior developers to improve team efficiency and code quality.

Must-Have Skills:

• Google Cloud (GCP): Hands-on experience with various Google Cloud services (Compute Engine, Cloud Storage, Pub/Sub, Firestore, etc.) for building scalable applications.
• React.js: Strong experience in building modern, responsive user interfaces with React.js and Typescript
• Koa.js: Strong experience in building web servers and APIs with Koa.js.
• MongoDB & Redis: Proficiency in working with MongoDB (NoSQL databases) and Redis for caching and session management.
• Bunyan: Experience using Bunyan for structured logging and tracking application events.
• OpenTelemetry Ecosystem: Hands-on experience with the OpenTelemetry ecosystem for monitoring and distributed tracing.
• CI/CD: Proficient in setting up CI/CD pipelines using tools like CircleCI, Jenkins, or GitLab CI.
• Testing Frameworks: Solid understanding and experience with Jest, Mocha, and React Testing Library for testing both back-end and front-end applications.
• JavaScript & Node.js: Strong proficiency in JavaScript (ES6+), and experience working with Node.js for back-end services.

Desired Skills & Experience:

• Experience with other cloud platforms (AWS, Azure).
• Familiarity with containerization and orchestration tools like Docker and Kubernetes.
• Experience working with TypeScript.
• Knowledge of other logging and monitoring tools.
• Familiarity with agile methodologies and project management tools (JIRA, Trello, etc.).

Qualifications:

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
• 5-10 years of hands-on experience as a Fullstack Developer.
• Strong problem-solving skills and ability to debug complex systems.
• Excellent communication skills and ability to work in a team-oriented, collaborative environment.

NET Full stack lead

Location: Bangalore

About

One of the fastest-growing SaaS companies in the CRM space,it empowers organizations with the power of automation. More than 1700 customers with 2 lakhs+ users across the globe utilize the platform to automate their sales and marketing processes and run high-velocity sales at scale.

We are backed by prominent investors such as Stakeboat Capital, Jyoti Bansal, and Gaja Capital to name a few. We raised $153mn in our latest round of Series C Funding from WestBridge Capital and we're now India's 103rd Unicorn! We are expanding rapidly and our 1400+ strong and still growing workforce is spread across India, the U.S., the Middle East, ASEAN, ANZ, and South Africa.

It is a six-time Deloitte Fast 50 company.We have won the National Startup Award 2021 and got recognized by DPIIT, under the Enterprise Software Category.In the last few years, we have been recognized multiple times by G2 as a High Performer in the Enterprise category.We have been included in the prestigious Economic Times’ India’s Growth Champions list and among the Top 100 fastest-growing companies in FT 1000: High-Growth Companies Asia-PacificFrost and Sullivan's 2019 Marketing Automation Company of the Year award.

Listed as Top Rates Product on G2Crowd, GetApp, and TrustRadius

We like being up to date with the latest technology and utilizing the trending tech stacks to build our product. By joining the engineering team, you get to work first-hand with the latest web and mobile technologies and solve the challenges of scale, performance, security, and cost optimization. Our goal is to build the best SaaS platform for sales execution in the industry and what better place than for an exciting career?

Digital CMS Platform (Portals) – High Growth Product

More and more product buying processes are moving digital. From discovery to evaluation to purchase, the consumer expects more of these online and more importantly in a seamless manner across channels.With this, a digital CMS platform becomes critical in our product roadmap.Today we have a good v1.0 Portals platform, which allows businesses to design a microsite with content and forms.

The Role

We are looking for a Full-stack lead who is very strong on ASP.NET MVC/.NET core on the backend with strong experience with React.JS. She/He should have a clear understanding of building scalable web applications using .NET. The role involves understanding business requirements and architecting/designing an appropriate solution that is secure, scalable, high performing, and testable. It is a hands-on role involving building software and taking ownership of delivery by working closely with junior members.

Requirements:

Passion for building and delivering great software with a strong sense of ownership.

Minimum 5-8 Years of experience in building web applications using ASP.NET MVC and .NET platform with React.JS experience in front-end.

Must have hands-on experience with AWS cloud

Good to have SQL programming experience in writing & optimizing queries that access/process millions of records.

Experience in architecting and designing web applications and services

Good to have experience in Node.JS and deployment with CI/CD

Good in data structures, algorithms, and OOPS concepts.

Strong expertise in SQL programming, with experience in writing & optimizing queries that access/process millions of records.

Competencies:

Effective communication skills

Should have good problem-Solving & Analytical skills

Should be a team player

Why Should You Apply?

Fast-paced environment

Accelerated Growth & Rewards

Easily approachable management

Work with the best minds and industry leaders

Flexible work timings

Role

We are looking for a  Senior Software Engineer - Python, React to join our engineering team and help us develop and maintain various software products.

You should be comfortable around front-end and back-end coding languages, development frameworks, and third-party libraries. You should also be a team player with a knack for visual design and utility.

Ultimately, you’ll build highly responsive web applications that align with our business needs.

Responsibilities

• Write effective, scalable code
• Develop front-end and back-end components to improve responsiveness and overall performance
• Integrate user-facing elements into applications
• Test and debug programs
• Improve functionality of existing systems
• Implement security and data protection solutions
• Assess and prioritize feature requests
• Coordinate with internal teams to understand user requirements and provide technical solutions

Qualifications

• BSc/BE/BTech in Computer Science, Engineering or a related field
• Must have 4+ years of work experience as a Python/Django (Back-end) and React (Front-end) developer
• Expertise in Django Framework. Other frameworks like Flask Pyramid knowledge are good to have
• Strong experience with Linux-based infrastructures, Linux/Unix administration, and AWS.
• Proficient in Terraform which allows migration to Kubernetes 
• Experience with DevOps toolchains such as Docker, Travis CI, Jenkins, Git.,
• Understanding of fundamental design principles behind a scalable application
• Able to create database schemas that represent and support business processes
• Knowledge of object-relational mapping (ORM)
• Able to implement automated testing platforms and unit tests
• Proficient understanding of code versioning tools (Git) 
• React experience is good to have
• Team spirit
• Good problem-solving skills

Ultra Commerce is a software and hosting company. It is based in Australia with additional offices in US, UK, New Zealand & India. Ultra Commerce provides managed- hosting services for commerce applications with its cloud platform & offers its own digital commerce platform. It serves B2B & B2C both.

Role & Responsibility-

5 years’ experience in web development with a server-side language such as PHP(framework such as Laravel, Zend, CodeIgniter)

Experience in Python.

- Experience in JavaScript frameworks (especially React)
- Experience in web services, Rest API, JSON, SOAP, Linux/Unix.
- Advanced knowledge in MVC architecture and object-oriented programming
- Proven track record of delivering high-quality customer facing software solutions on time and within deadlines.
- Solid understanding of web application security
- Professional experience of version control (Git)
- Ability to estimate, design and implement development tasks in the form of writing and editing code, as well as writing and executing database queries and applying configuration changes.
- Great communication, critical thinking, problem solving, and time-management skills.
- Ability to create development tasks based on analysis of client business rules, desired functionality, and functional specs
- Mentor developers by answering questions on ongoing project related tasks.

Job Location- Gurgaon sector 39 Unitech Cyber Park

5 Days working- Work from office

http://www.ultracommerce.co">www.ultracommerce.co

ABOUT THE STARTUP:

Lamamia is founded by IIM alumni and mentored by seasoned professionals from Flipkart.com, CommonFloor.com, Adani Group, TATA Group, Suzlon, and professors from IIT, IIM and XLRI.

Lamamia is incubated by IAMAI, (chaired by Mr Amit Agarwal, Amazon India Head) in association with Govt. of Haryana. It is also incubated by FIED IIM Kashiur for mentoring and funding support.

Lamamia is an Uber for Vernacular skilling and Education, wherein educators can create and share their micro-lessons and micro-tests with the learners spread across the remote and rural part of India. Students can choose the educators, courses and assessment tests to enhance their knowledge, skill, aptitude and employability. 

DESIRED SKILLS:

1. AWS (EC2/S3/Lambda)
2. DynamoDB
3. Node.Js
4. HTML5, Javascript, React.Js
5. Android Native (Java/Kotlin)
6. Socket.io / WebRTC (LiveStreaming)
7. Firebase
8. Prior experience in developing/integration livestreaming feature is essential.

JOB DESCRITION

1. Enhancing the existing features and developing the new features
2. Being able to develop the product independently and also with the team .
3. Being able to work under pressure and think out of the box.
4. Being a good leader with decent professional communication skills.
5. Knowledge and experience of Android Development is an added advantage

OUR PRODUCT

Understand The Product Features:

https://play.google.com/store/apps/developer?id=Lamamia&;hl=en_IN

1. Our product offers on-demand video lessons and quizzes in local languages.
2. Teachers can independently create and share their content.

WHAT WE OFFER:

1. Opportunity to work as a core team member
2. Direct Reporting to Founders
3. Exponential and 360 degree learning
4. Working with an experienced team from IIM
5. 4.2 - 7.8 LPA (INR) CTC + ESOPs*

Hiring Full Stack Developers at Krishivan Technologies Pvt Ltd

Job Overview:

We are urgently looking for a Full Stack Developer with 1-3 years of experience to produce scalable software solutions. You'll be part of a cross-functional team that's responsible for the full software development life cycle, from conception to deployment.

As a Full Stack Developer, you should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. You should also be a team player with a knack for visual design and utility.

About Krishivan:

Krishivan Technologies is an AgroTech start-up that aims to partner with grassroots farmers to improve their livelihoods through smart collaboration between ‘Agriculture and Technology’. With us, farmers have exclusive access to Agri-solutions and Agri-advice at their fingertips.

We bridge the gap between farming challenges, expert knowledge, shortage of high-quality agri-in puts, sustainable financial aid, equipped machinery and infrastructure to enhance the production a nd income ability of farmers with the integration of technology from pre-harvest to post-harvest.

Roles and responsibilities:

● Participate in requirements analysis

● Building interactive consumer data from multiple systems and REST entirely abstract to the UI through a Node.js backend

● Ensure the best possible performance, quality, and responsiveness of applications

● Test-Driven Development

● Address and improve any technical issue.

● Support the implementation of developed software solutions

Requirements and skills:

● Strong understanding of object-oriented programming

● Knowledge of NodeJS, ExpressJS

● React.js/ Next.js / Node.js / Mongo DB

● Javascript, Jquery, HTML, CSS, Bootstrap

● Understanding of Agile methodologies

● Hands-on experience with JavaScript Development on both client and server-side

● Proficient understanding of code versioning tools.

Good to have:

● AWS and/or Azure Services

● Git Setup

● Experience with cloud technologies

● Familiar with various design and architectural patterns

What you’ll do - 

1. Design and implementation of the overall web architecture.
2. Design and deployment of database.
3. Ensuring the entire stack is designed and built for speed and scalability.
4. Design and construction of our REST API
5. Integrating our front-end UI with the constructed API
6. Design and implementation of continuous integration and deployment.
7. Work remotely with our global clients and teams across the US

What you should have - 

1. Should have 5+ years of experience expertise in developing applications using any of the frameworks and programming languages
2. 5-8 years’ experience Fluent in CSS (Foundation or Bootstrap), JavaScript and HTML, with an understanding of CSS, React.JS
3. Experience working with server technologies Node.js
4. Experience in API design and development.
5. Understanding of SQL / NoSQL databases MongoDB.
6. Strong knowledge of data structures, system design, and algorithms.
7. Great organizational and time-management skills.
8. Great interpersonal and communication skills.