
Senior Full Stack dev backend for Ticketing Platform Using Claude Code
at Express Text
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.

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•Employment Type: Full-Time
•Experience: 8-10 Years
•Notice Period: Immediate Joiners / Serving Notice only
•MNC Background (Mandatory)
Required Knowledge & Experience:
•Strong expertise in full-stack technologies including Java, Spring Boot, Node.js, React, Angular, PostgreSQL, and AWS.
•Excellent verbal and written communication skills.
•Financial Services or Insurance domain experience is preferred.
•Proven experience in developing enterprise-scale applications and complex technology platforms.
•Strong understanding of software design patterns, frameworks, and reference architectures.
•Hands-on experience with CI/CD pipelines, DevOps practices, and deployment automation.
•Ability to lead development teams, mentor engineers, and drive technical decision-making.
•Strong analytical and problem-solving skills with an innovation-driven mindset.
Education & Experience:
•Bachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline.
•Master's degree in Computer Science or Engineering is preferred.
•Minimum 8 years of IT experience.
•5+ years of experience in the Financial Services or Insurance domain is preferred.
Job Title: Full Stack Engineer
Location: Delhi-NCR
Type: Full-Time
Responsibilities
Frontend:
- Develop responsive, intuitive interfaces using HTML, CSS (SASS), React, and Vanilla JS.
- Implement real-time features using sockets for dynamic, interactive user experiences.
- Collaborate with designers to ensure consistent UI/UX patterns and deliver visually compelling products.
Backend:
- Design, implement, and maintain APIs using Python (FastAPI).
- Integrate AI-driven features to enhance user experience and streamline processes.
- Ensure the code adheres to best practices in performance, scalability, and security.
- Troubleshoot and resolve production issues, minimizing downtime and improving reliability.
Database & Data Management:
- Work with PostgreSQL for relational data, ensuring optimal queries and indexing.
- Utilize ClickHouse or MongoDB where appropriate to handle specific data workloads and analytics needs.
- Contribute to building dashboards and tools for analytics and reporting.
- Leverage AI/ML concepts to derive insights from data and improve system performance.
General:
- Use Git for version control; conduct code reviews, ensure clean commit history, and maintain robust documentation.
- Collaborate with cross-functional teams to deliver features that align with business goals.
- Stay updated with industry trends, particularly in AI and emerging frameworks, and apply them to enhance our platform.
- Mentor junior engineers and contribute to continuous improvement in team processes and code quality.
Job Brief:
- Proficient with Microsoft .NET & .NET Core development using C#, Web API.
- Good understanding of Design Patterns and Principles.
- Must have an experience on Angular6/7//8.
- Having knowledge of in NodeJS / VueJS / ReactJS will be an added advantage.
- Excellent Communication, presentation, problem-solving and team working skills
- Interact with Clients & handle single project.
COVID-19 considerations:
Currently all our employees are doing Work From Home till situation goes better
Experience :
Dot Net Framework and Dot Net Core: minimum 6 months (Preferred)
Angular 6/7/8 : Minimum 6 months ( Preferred)
DevDarshan is a devotional platform launched by IIT graduates to promote the teachings of Indian culture and the Hindu way of life in India around the world. In the 21st century, where everything around is digitized then why not temples. That’s the idea behind DevDarshan.We’ve built a community of devotees from multiple Countries, through our Mobile Application that connects Temples and Devotees, have successfully raised seed investment and also started to generate revenue for the temples and Priests associated with us.Right now we are looking to grow our team and build new exciting features for devotees all around the world.
This is where you come in.
We are looking for a passionate and self-motivated individual to help our Web frontend too.
Requirements:
- Strong Design and User Experience. Have worked on building High Quality Web experiences and extremely focussed on coding for the best User Experience
- Experience in any frontend framework like ReactJS, VueJs
- Good understanding and experience of NoSQL and SQL Databases, which to be used when.
- Experience with CI/CD Systems like Jenkins, Github Actions.
- Some Experience with Realtime Databases/Systems or Socket based applications would be preferred.
- Some Experience with building Algorithms, Social Apps is preferred.
- Any experience with Handling Video Delivery like ffmpeg/HLS/WebRTC is preferred but not mandatory.
The Role
- You will be involved at all stages of the product development process, from design to development and deployment.
- You possess a passion for improving techniques, processes, tracking, and continuously improve our engineering practices and would work on a daily basis towards that
ROLE: Full Stack Developer
About the company:
CogniTensor is an analytical software company that brings data to the heart of decision-making. CogniTensor leverages its product, DeepOptics - an integrated platform to implement 3A (Automation, Analytics and AI) at scale.
Cognitensor has customers ranging in Finance, Energy, Commodity, Retail & Manufacturing. More details can be found on our website: https://www.cognitensor.com/
Our strategic investors include Shell and CIIE.CO (IIM-A/Accenture).
Qualification & Experience:
- BE/B.Tech Degree in Computer Programming, Computer Science, or a related field.
- +2 years experience as a Software Developer.
- Hands on experience in developing finance applications is must
Roles & Responsibilities:
We are looking for a Full Stack Developer 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. Along with familiar with Agile methodologies and testing skills
- Work with development teams and product managers to ideate software solutions
- Design client-side and server-side architecture
- Develop and manage well-functioning databases and applications
- Write effective APIs
- Write technical documentation
- Excellent communication and teamwork skills
Technical Skills:
Must Have
- React JS
- Git / Bitbucket,
- Express JS, Python, HTML, CSS, Node JS
- CI/CD like CircleCI
- Postgres or any DB knowledge
- Familiarity with AWS or Azure or both
Good to Have
- Docker
- Redux
- Android development
- React Native
- Electron
- GraphQL
- Jira
What’s in for you:
● An opportunity to lead a business segment
● Extensive liaising with customers and partners
● A rewarding career progression
Preferred Location:
Delhi NCR
2+ years experience building with AWS tech stack (RDS, EC2, Lambda)
Experience in developing complex web application using MERN stackProficient in Javascript ES6 and above
Should be hands on knowledge in working on VCS like Git
Should have hands on knowledge in developing web applications in the React ecosystem
Should have sound knowledge in algorithms and problem solving techniques
Should have knowledge about web application development and related technologies
Bonus:
Experience utilizing telecommunication services such as Twilio
Experience working with Keras/Tensorflow
What You'll Do:
Organize full lifecycle software development
Write well designed, testable, efficient code
Work alongside and effectively coordinate with other engineers on the team
Come up with procedures and frameworks to avoid technical debt
Create efficient architectural and database design
Evaluate and deploy software tools, processes and metrics
Help other engineers excel in their job and in their careers
Create amazing products that scale!
Job descriptions
Team Lead Full stack developer
Born at MIT, GeniusMesh is an executive networking, career coaching and recruitment platform. We are building our offshore team to support our growth. The lead full stack developer has a range of responsibilities from shaping and implementing strategic products to ensuring that we stay on the leading edge of technology. Responsible to contribute across the technology stack, from database and DevOps infrastructure that supports continuous deployment, to application development.
Responsibilities
- Designs the overall technical architecture of the product
- Mentors and coaches the technical team, specifically with pair programming and code reviews
- Engages in coding to help the team to develop the solution and solve all surfacing problems at hand. Identifies and removes technical impediments
- Provides technical training and guidance to other developers
- Works with product owner to align the roadmap with strengths and opportunities with the technical stack
- Constantly looks for improvement in solving technical problems and designing the solutions, not afraid to discuss with passion resolutions
- Provides the team with a roadmap for implementing agile software engineering practices for higher code quality
- Shares responsibility with Product Owners for building reusable and scalable components
Requirements
- Master's Degree in Information Technology, Computer Science, or a related discipline or graduate from a top school
- Minimum 6+ years of software development experience
- Seen as an expert within the technical components of the domains/products/journeys
- Can make architecture decisions at a team and product level
- Experience working on projects that span multiple organizations and business units
- Experience in building and scaling SaaS solutions
- Agile Development experience (XP, Continuous Integration, Continuous Delivery), with Solution Architect experience
- Strong communication experience with the ability to assist in aligning organization on complex technical decisions
- Must be a creative thinker and can recognize and solve problems by thinking outside the box
- Required Technical Experience: React, JavaScript, CSS, Nodes.js, RESTFUL APIs, GitHub, HTML
- Preferred Technical Experience: TDD, Jira, AWS (Elastic Beanstalk), Python, Express.js, BDD
- Ability to write quality unit tests and integration tests
- Understanding of repeatable automated processes for building the application, testing it, documenting it, and deploying it at scale
- An awareness of security concerns is very important, as each layer presents its possible vulnerabilities
- Willing to get hands dirty in various tools and technologies
- Must have entrepreneurial mindset, willing to roll up the sleeve to make things happen
- Must be willing to work in a fast paced environment.
About the job
We are looking for an experienced individual who can work with us. The selected developer would help us in developing new backend services, update / change older working services, creating REST APIs for frontend, and maintain existing code and integration to other Providers with High Quality and re-usable code. Further it will be expected out of the developer to help in optimizing components for maximum performance across a vast array of edge cases, and test the code.
Particulars of the job
REQUIREMENTS
- Must be passionate about learning new technologies.
- 2+ years of experience in developing web based applications.
- Must have experiencing in node.js / postgresql.
- Ability to solve architecture level problems.
- Experience in leading the team, have lead the team of junior developers in past.
What we appreciate?
A perfect candidate should hold or think the following things are important.
Values - Orderliness • Transparency • Merit • Productivity • Smart work
Abilities - Pro-activeness • Problem solving aptitude • Responsive • Quick learner • Leadership traits
Skills - • NodeJS • JavaScript • Typescript • RESTful APIs • HTML / CSS • PostgreSQL • SQL Server • Networking • Templating engine • Git
Brownie points - Good communicator • Organized • Awareness of new approaches/practices in domain • Awareness of online communities
Who are we?
We are a SaS startup, who is building software for other start-ups, and helping others on the way stand. Our mission is to reduce the barriers to launching a tech startup.
Xuresolutions.in
Why work with us?
- We promote an open culture based on trust and ownership.
- We like to work in an idea meritocracy. Ideas and believability of individuals over seniority/title.
- Our working schedule revolves around Monday to Friday.
- Working hours are 10 AM to 7 PM officially. However, we aim for maximum overlap and coordination rather than pointless strict conformity (we aren’t a school!)
- We work a flexible week depending on the current team’s performance and needs. Roles and Responsibilities
Our ideal candidate is someone who is an exceptional JS developer with significant experience on React and Node. You should be able to build and support complex applications single-handedly with a keen eye towards UX, design, security and performance. Additionally you will need to have a basic understanding of microservices, API integrations to aid in achieving our vision of building the most robust and scalable integration platform in the B2B Retail + Food verticals. You will be responsible for architecture, design and implementation of the entire system to support thousands of customers globally. Our stack is primarily built around Node, PHP, React, Angular, Mongo, PHP and advanced Infra and DevOps tools such as Kubernetes, Grafana, Prometheus, ELK and more.
Mentoring should come naturally to you, as well as finding the right balance towards process and documentation.
Highlights:
1) You will be working on interesting technical challenges in a product centric and open-source driven environment.
2) You will help set a very high bar on code quality with a focus on test driven development and writing highly performant, fault tolerant and secure code.
3) You will take ownership of product features from conception to implementation, testing deployment and support.
4) A lot of freedom on when and where you work from - just get stuff done.
5) You will open source as much as possible, and blog about cool things that you learnt and built.
6) You will help define who we become as a company.
7) You will get stock options in line with silicon valley standards.
Caveats:
1) We have a strict no-divas rule. There are a lot of smart engineers on the team but no one with an attitude / superiority complex.
2) If you think writing tests for your code, writing docs, doing customer support etc are not your cup of tea, this isn't the right role for you.
3) Similarly, if you're viewing this just as a 20-40% increment opportunity over your current compensation, this isn't the right role or company for you.
This role can be the growth opportunity of a lifetime for anyone who has been operating as a backend lead and wants to grow into a fullstack CTO. Check out the links below if you'd like to learn more about us. We encourage people from underrepresented groups to apply.
1) Why ShoppinPal? - https://www.youtube.com/watch?v=cE7DgtwA0ws" target="_blank">https://www.youtube.com/watch?v=cE7DgtwA0ws
2) Our hiring philosophy and process http://techstory.in/building-startup-team/" target="_blank">http://techstory.in/building-startup-team/
3) Our culture- https://www.shoppinpal.com/culture">https://www.shoppinpal.com/culture









