Java Full Stack

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.

Insurity’s Next Software Engineer II

We are seeking an experienced and highly capable Software Engineer II to join our Bridge product team. This role offers the opportunity to shape the future of a core Insurity platform by building new features, modernizing both frontend and backend components, and improving system performance. The ideal candidate will bring strong technical depth, collaborative instincts, and an automation mindset—along with a passion for using next-generation tooling to enhance delivery. You’ll play a key role in projects that include UI/API modernization, system integrations, and performance tuning, while also helping to adopt agentic workflows and internal automations that scale team impact.

What Our Software Engineer II Will Do

• Design, build, and ship features across a large .NET microservices suite; own your code from design through production.
• Own quality as part of engineering: write and maintain the automation needed to protect your services (unit, integration, contract, and targeted e2e). “Done” = coded, reviewed, tested, observable, deployed.
• Evolve APIs (REST/JSON; some SOAP): define clear contracts, enforce backward-compatibility with contract tests.
• Level up automation & CI/CD: improve pipelines, quality gates, coverage, and deployment reliability; reduce flaky tests and speed feedback loops.
• Operate what you build: add logs/metrics/traces, triage issues, root-cause and fix defects.
• Partner with QA on test strategy for your changes; QA is a collaborator, not a handoff.
• Lean into generative AI to go faster—safely:
• Use coding assistants (e.g., Copilot/ChatGPT/Replit) to draft code/tests/docs and verify outputs.
• Generate synthetic test data/cases from API contracts; summarize PRs, changelogs, and incidents.
• Build lightweight internal automations (e.g., PR reviewers, log triage helpers) under our governance.
• Document decisions and how to test/use your services.

     Within 6–18 months you will:

• Independently deliver simple → moderately complex enhancements end-to-end with solid estimates.
• Extend shared test/utilities as needed for your services (you’re not a test-framework team).
• Write concise technical docs for engineers, QA, support, and ops.

Who We’re Looking For

• 6–10 years building and shipping production services/features.
• C#/.NET (ASP.NET Core, Web API), SQL Server; microservices fundamentals (service boundaries, resiliency, observability).
• Quality-through-code (must-have): you routinely add unit/integration/contract tests for the code you ship; comfortable with Playwright/Cypress or Postman/Newman for targeted e2e; GitHub Actions/Azure DevOps/Jenkins for CI/CD and quality gates.
• Generative AI fluency (must-have): practical experience using coding assistants to accelerate delivery, crafting prompts, checking/ground-truthing outputs, and safely handling code/data (privacy & IP). Bonus: generating test data/cases, PR summaries, or simple internal automations; exposure to vendor AI features or no/low-code connectors
• Strong API design & documentation; SOAP familiarity is a plus.
• Solid engineering practices: OOP, SOLID, data structures/algorithms, Git, reviews, reproducible builds.
• Azure/DevOps exposure desirable (pipelines, IaC basics, monitoring).
• Automation mindset: linters/formatters, build/deploy scripts, DB migrations, scaffolding/code-gen.
• Clear communicator; collaborates well with Product/QA/Ops; change agent within 6–12 months.
• Nice to have: Insurance domain exposure (claims/policy/billing/underwriting).
• Hybrid role (we just built a brand-new office space!)

Job Title : Senior MERN Stack Developer with Blockchain Expertise

Location : Indore, MP

Experience : 5-7 years

Job Type : Full-time, On-site

We're seeking a seasoned Senior MERN Stack Developer with a strong focus on blockchain technology to join our innovative team in Indore. As a Senior MERN Stack Developer, you'll play a pivotal role in crafting and implementing cutting-edge blockchain solutions using the MERN stack. Your expertise will contribute to the development of secure, scalable, and decentralized applications. If you're passionate about blockchain technology, possess extensive MERN stack experience, and thrive in a collaborative environment, we encourage you to apply and be a key player in our transformative projects.

Requirements :

• Proven experience as a Full Stack Developer with a specialization in blockchain technology.
• Proficiency in the MERN stack (MongoDB, Express.js, React, Node.js).
• Experience with major blockchain platforms such as Ethereum, Hyperledger, or similar.
• Solid understanding of smart contract development and implementation.
• Knowledge of decentralized application (dApp) development.
• Familiarity with cryptography and principles of blockchain security.
• Strong problem-solving and analytical skills.
• Excellent collaboration and communication skills.

Skills :

• MongoDB, Express, Node.js, React.js
• Next.js (knowledge preferred but not mandatory)
• WordPress/Shopify experience (preferred)
• Real-time communication using Socket.IO or WebRTC (preferred)
• GraphQL API development
• Experience with integrating payment gateways

If you're ready to take on exciting challenges and contribute to groundbreaking projects, apply now and join us in shaping the future of blockchain technology.

We are looking for an experienced Senior Software Engineer who will develop designing and develop new software solutions; as well as support existing product updates and enhancements. Our Senior Software Engineer will join a growing team of developers responsible for building new and supporting existing products.

The ideal candidate will have the ability to prioritize well, communicate clearly, have a consistent track record of delivery and have excellent software engineering skills. Creative engineering is balanced with high quality and a customer focus. Must be able to work across multiple facets of the project and juggle multiple responsibilities at the same time. Strong analytic capability and the ability to create innovative solutions. We are looking for a highly motivated individual who is looking to grow their career in a fast-paced environment.

• Understand complex application design and program activities in the latest techniques and technologies: PHP, MySQL, Laravel, Rest APIs, Javascript, React, CSS, HTML and AWS Infrastructure
• Implement high-quality code in an agile, test-driven development environment
• Create high-performance APIs, libraries and microservices that scale to meet/exceed client expectations
• Participate in design and code reviews 
• Perform performance and scalability analysis as needed
• Find creative and elegant solutions to complex problems
• Research, evaluate and adopt next-generation technologies 
• Build automated unit and integration tests as needed 
• Work closely with our Designers, Engineers, Product Owners and Application Engineers and build automated solutions
• Determine operational feasibility by evaluating analysis, problem definition, requirements, solution development and proposed solutions
• Develop software solutions by studying information needs; conferring with users; studying systems flow, data usage and work processes; investigating problem areas; following the software development lifecycle
• Prepare and install solutions by determining and designing system specifications, standards and programming
• Accomplish engineering and organization mission by completing related results as needed
• Protect operations by keeping information confidential

• Mentor junior and mid-level engineers
• Make informed decisions quickly and take ownership of services and applications at scale
• Understand business needs and know how to create the tools to manage them
• Grow engineering teams by interviewing, recruiting and hiring

• 5+ years of experience with PHP, MySQL, Rest APIs, 
• 3+ years of experience with Javascript, React, CSS, and HTML
• Experience with AWS Infrastructure a plus 
• Experience with Github and tools like Bugsnag and Crashlytics 
• Experience working in an agile environment that follows Scrum or other agile methodologies 
• Experience developing software for Enterprise clients is preferred 
• Experience working with project management tools such as Asana or Trello is a plus
• Excellent time management skills, with the ability to work under deadlines in a fast-paced environment
• Attention to detail and commitment to high-quality/error free deliverables
• Great communication and problem-solving skills
• Detail-oriented and a critical thinker 
• Collaborate with team to brainstorm and create new products
• Stay on the leading edge of development practices
• A team player and leader but can work independently

About you

• Bachelor’s or Master’s in Computer Science or Computer Engineering  
• 6+ years of software development experience 
• Experience in SaaS (Software as a Service) model building scalable platforms utilizing micro services/distributed systems architecture using: restful APIs by internal and external partners 
• Understanding of data structures and algorithms
• Demonstrated experience with multi-tier applications
• Additional experience in customer-facing sustaining, support work and customer communication 

Our Culture

We help companies manage their biggest asset, their people. We are disrupting the corporate wellness market to help companies large and small to support employee and workplace wellbeing. If you’re ready to join our growing team and have the opportunity to be a part of a company that is focused on Woliba (Work-Life-Balance) then we’d love to hear from you. 

Job Description: Full Stack Developer (Angular/API)

• Experience in developing web and mobile applications using Frontend & Backend framework
• Hands-on Experience in developing frontend UI using Angular.
• Hands-on experience in API development preferably using .net Core.
• Hands-on Experience with ORM solutions like Entity Framework, Dapper, hibernate
• Strong knowledge of front-end UI frameworks like Bootstrap, Material, Prime NG
• Strong Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)
• Knowledge of cloud technology like Azure/AWS
• Must have strong OOPS knowledge
• Must have Knowledge Design Principle
• Strong knowledge of writing DB Query, Proc, View, indexing  & Query Optimization skill
• Must know SDLC/AGILE Software development skill
• Must know source code management  tool TFS, SVN OR GIT
• Willingness to participate in organization initiatives and create a reusable library, POC
• Inclination towards cutting-edge technology and the latest framework
• Strong troubleshooting skills and Analytical mind
• Excellent communication and team player.

Key Skills: Java, Node.js, React js, PHP , JSON, Mongo DB, Rest APIs, Word Press, Web Services, Mern Stack, Mean Stack, Express Framework, Bootstrap with Angularjs.

1. Overall 3 to 4+ years of experience is required with the following skills.
2. Strong knowledge of JavaScript, Nodejs, Angular. Expresses, Reactjs, AJAX, and jQuery
3. Good working knowledge of working database platforms like dynamo DB MYSQL and Mongo DB Experience
4. working on wasp user interface technologies HTML and JavaScript, Knowledge of web servers and app servers AWS and MongoDB.
5. You need to work in an agile cross-functional team to create a customer experience and implement high-quality code into production.
6. Work on bug fixes and improvement of application performance.
7. Hands on experience with a framework with Angular JS and Node JS
8. Hands on experience with utility library with jQuery lib, bootstrap.js, Angularjs, Bootstrap, Date Picker, canvasjs.min.js, Socket.io, Moment timezone.js
9. Good Knowledge of AWS Amazon web services.
10. Should be Proficient in Linux
11. Experience on Node.js and Json rest APIs developments and web services knowledge are highly preferred.
12. Knowledge of cross-browser platform issues and implementation is highly preferred.

Designation: Software Engineer II

Experience: 4+ years

Work Location: Marathahalli Outer Ring Road, Bengaluru

About the role:

At Bizongo, we believe in delivering excellence which drives business efficiency for our customers. As a Software Engineer at Bizongo, you will be working on developing the next generation of technology that will impact how businesses take care of their process and derive process efficiency. We are looking for engineers who can bring fresh ideas, function at scale and are passionate about technology. We expect our engineers to be multi-dimensional, display leadership and have a zeal for learning as well as experimentation as we push business efficiency through our technology. As a Software Engineer in Test, you’ll be testing complex scenarios, end-to-end, using automation frameworks like Selenium.

Must-haves:

• Proficiency in either Java or Python.

• At least 4 years of experience in working on automated testing frameworks like Selenium, Cucumber.

• Excellent understanding of Feature, Regression, and Smoke Testing.

• Clear understanding of RESTFul API’s and building test frameworks for the same

• Excellent in finding testing scenarios, catching corner cases of the feature that you would be testing.

• Ability to Manage and Test different Projects simultaneously.

• Tech/ BS in Computer Science (or have done relevant courses for the same)

• Good in analysis and solving problems.

• Excellent verbal and written communication skills.

• Passionate about working in a startup.

It would be a plus if:

• If you have built an automated test framework for at least one product from the scratch

• Understanding of how the web works

• Understanding of MVC frameworks like Ruby on Rails, Python Django

Key Responsibilities :

• Understand the design and end-to-end workflow of the feature/product specifications.

• Coming up with all the testing scenarios even before the start of development, after going through the design and specifications

• Keeping the test suite up to date with the latest changes

• Documentation - Keeping all the testing scenarios in the documented format so that anyone can test the scenarios manually if required

• Key role in keeping the production bugs count to zero

Why work with us ?

• Opportunity to work with "India's leading B2B" E-commerce venture. The company grew its revenue by more than 5.5x last year to reach to a 350 Cr annual revenue run rate scale. We invite you to be part of the upcoming growth story of B2B sector through Bizongo

• Opportunity to work with most dynamic individuals in Asia recognized under Forbes 30 Under 30 and industry stalwarts from across companies like Microsoft, Paypal, Gravitas, Parksons, ITC, Snapdeal, Fedex, Deloitte and HUL Bizongo is featured in LinkedIn Top Startups 2019: The 25 hottest Indian companies to work for!

• Working in Bizongo translates into being a part of a dynamic start-up with some of the most enthusiastic, hardworking and intelligent people in a fast paced and electrifying environment

• Bizongo has been awarded as the most Disruptive Procurement Startup of the year - 2017

• This year, Bizongo was awarded the highly prestigious & internationally acclaimed 'The DieLine Award' under the Sustainable Packaging category

• Being a company that is expanding itself every day and working towards exploring newer avenues in the market, every employee grows with the company

• The position provides a chance to build on existing talents, learn new skills and gain valuable experience in the field of Ecommerce

About the Company:

Company Website: www.bizongo.com

About Bizongo:

• Bizongo is India's largest multi-category technology-driven packaging platform. We are one of the largest B2B e-commerce players in the country. Bizongo's distinctive business model is a unified platform that solves design, development, and procurement problems for every packaging category. On top of this vision resides a stack of connected technology platforms that facilitate efficient business processes to provide an end-to-end experience which a focus on providing optimized technology-driven supply chain solutions. The place where creativity and technology converge is where transformation happens. With these elements put together, Bizongo is disrupting the market, enabling efficiency and bringing convenience in businesses.

• Packaging has the untapped potential to fit into this space. It is ubiquitous, it is unique, and it is used by diverse industries like FMCG, E-commerce, Automobiles, Pharmaceuticals, and many more. This has made it an ideal means for Bizongo to put their belief into action and create a platform for everything packaging.
  Bizongo serves 100+ enterprise customers across a wide range of industries and is providing packaging solutions to leading brands like Amazon, Johnson & Johnson, Tata Cliq, & Mondelez to name a few.

• Bizongo is a Series C funded startup and backed by marquee investors like Accel, B Capital, Chiratae Ventures, Schroder Adveq & International Finance Corporation (IFC). To be featured in Linkedin Top 25 startups and recognition by Forbes 30 under 30 Asia just validated our business model and affirmed our core beliefs.

Additional Perks:

• Medical Insurance

• Flexible Work hours

• Work from Home

• Casual Dress Code

• Recreational Facility

We're looking for a Full Stack developer who will take a key role on our team. Our Full Stack developer must have knowledge in all stages of software development.

Requirements:

• Design overall architecture of the web application.
• Maintain quality and ensure responsiveness of applications.
• Collaborate with the rest of the engineering team to design and launch new features.
• Maintain code integrity and organisation.
• Experience working with graphic designers and converting designs to visual elements.
• Understanding and implementation of security and data protection.
• Highly experienced with back-end programming with NodeJS, you can easily design and integrate the REST APIs with front end.
• Well versed with JavaScript (frameworks such as ReactJS).
• Development experience for both mobile and desktop.
• Experience with cloud message APIs and usage of push notifications.
• Knowledge of code versioning tools such as Git.
• Knowledge about Firebase & GoLang is an added advantage.