Senior Software Engineer

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 inviting a Fullstack Developer who excels at building modern web and mobile applications, with deep backend experience in Node.js and strong frontend proficiency in Next.js and React Native (Expo). You’ll work with a team of designers, product leads, and developers to bring impactful climate tech to life.

Location: Mumbai & Vicinity (India)

Responsibilities:

• Design, develop, and maintain scalable backend services using Node.js.
• Develop responsive and high-performance web applications using Next.js.
• Build and deploy mobile applications using React Native and Expo.
• Collaborate with UX Designers, Architects, and other Developers to implement full-stack web and mobile solutions.
• Perform data modeling and database management using PostgreSQL and Prisma.
• Ensure the performance, quality, and responsiveness of applications.
• Troubleshoot and debug applications to optimize performance.
• Write clean, maintainable, and well-documented code.
• Participate in code reviews and contribute to continuous improvement of development processes.
• Apply AI-enhanced developer tools like Cursor, Copilot, or similar to boost development velocity and code quality.

Required Skills and Experience:

• 2+ years of experience in full-stack JavaScript development.
• Strong proficiency in backend development using Node.js.
• Demonstrated experience with frontend technologies such as Next.js and React Native.
• Experience with PostgreSQL and Prisma for database management and data modeling.
• Experience with deploying React Native applications using Expo.
• Solid understanding of RESTful APIs and how to integrate them with front-end applications.
• Familiarity with modern JavaScript (ES6+), HTML5, and CSS3.
• Strong understanding of software development best practices.
• Proficiency in version control systems such as Git.

Additional Relevant Skills and Experience:

• Experience with map modules, such as ArcGIS, and Google Earth Engine.
• Experience with TypeScript.
• Experience with CI/CD pipelines.
• Understanding of server-side rendering and static site generation.
• Good eye for design and UX principles.
• Experience working in Agile/Scrum environments.

Good to Have:

• Experience with WebSockets and real-time applications.
• Familiarity with cloud platforms such as AWS or Azure.
• Experience with Docker and containerized applications.
• Knowledge of performance optimization techniques.
• Strong problem-solving skills and ability to work independently or as part of a team.

We Offer:

• Work on Open Source Projects
• Competitive Salary based on Location
• Flexible working hours
• 4 weeks of paid leave/year
• Work from home

Plant-for-the-Planet is a global, youth-led non-profit with a mission to restore ecosystems through tree planting and climate justice advocacy. Our tech team, spanning five continents, builds scalable, open-source tools to support environmental action at a global scale.

Learn more: https://www.plant-for-the-planet.org

Job Title: Java Full Stack Developer

Experience: 6+ Years

Locations: Bangalore, Mumbai, Pune, Gurgaon

Work Mode: Hybrid

Notice Period: Immediate Joiners Preferred / Candidates Who Have Completed Their Notice Period

About the Role

We are looking for a highly skilled and experienced Java Full Stack Developer with a strong command over backend technologies and modern frontend frameworks. The ideal candidate will have deep experience with Java, ReactJS, and DevOps tools like Jenkins, Docker, and basic Kubernetes knowledge. You’ll be contributing to complex software solutions across industries, collaborating with cross-functional teams, and deploying production-grade systems in a cloud-native, CI/CD-driven environment.

Key Responsibilities

• Design and develop scalable web applications using Java (Spring Boot) and ReactJS
• Collaborate with UX/UI designers and backend developers to implement robust, efficient front-end interfaces
• Develop and maintain CI/CD pipelines using Jenkins, ensuring high-quality software delivery
• Containerize applications using Docker and ensure smooth deployment and orchestration using Kubernetes (basic level)
• Write clean, modular, and testable code and participate in code reviews
• Troubleshoot and resolve performance, reliability, and functional issues in production
• Work in Agile teams and participate in daily stand-ups, sprint planning, and retrospective meetings
• Ensure all security, compliance, and performance standards are met in the development lifecycle

Mandatory Skills

• Backend: Java, Spring Boot
• Frontend: ReactJS
• DevOps Tools: Jenkins, Docker
• Containers & Orchestration: Basic knowledge of Kubernetes
• Strong understanding of RESTful services and APIs
• Familiarity with Git and version control workflows
• Good understanding of SDLC, Agile/Scrum methodologies

Must have skills :

6+ Years Java, Spring - 4+ years, Node JS / React JS - 4+ years

Responsibilities:

Code, test and debug programs according to specifications.

Build new and modifying existing applications.

Develop software prototypes.

Write unit tests and functional tests (automation).

Perform manual tests.

Use tools to access data in datastore, version control systems, etc.

Practice Agile methodologies.

Frequently interface with other functional teams on all aspects of a feature or sub-system 

Job description

We are looking for MERN Stack Interns to join our team and help us build and maintain high-performance web applications. As a MERN stack developer, you will be responsible for designing, developing, and deploying web applications using the MERN stack (MongoDB, Express, React, and Node.js).

Key Responsibilities:

• Design and develop web applications using the MERN stack
• Write clean, maintainable, and efficient code
• Collaborate with the team to define, design, and ship new features
• Troubleshoot, debug, and optimize the application
• Stay up-to-date with the latest industry trends and technologies
• Participate in code reviews and ensure the code is maintainable and scalable

Qualifications:

• Strong knowledge of JavaScript.
• Familiar with MongoDB, Express, React, and Node.js
• Familiar with web development concepts such as RESTful API design, authentication and authorization, and front-end optimization.
• Familiar with Git, webpack, and other development tools.
• Strong problem-solving skills and ability to debug and optimize code.
• Strong communication and documentation skills.
• Must have a bachelor's/master's degree in Computer Science.

If you are passionate about using the latest technologies to build high-performance web applications, we would love to hear from you!

Internship Duration: 06 Months.

Working Days: (Monday to Friday)

Timing: 9:30 AM to 6:30 PM

Job Location: Naini Prayagraj.

Note: This Job is the total based on Work from the Office & We prefer only UP candidates.

Job Types: Full-time, Internship

Salary: ₹5,000.00 per month

FULL STACK DEVELOPER

Responsibilities

• Develop interactive, user-friendly applications using the latest frameworks

• Deliver across the entire application life cycle in the stages of concept, design, build, deployment, test, and release to app stores and support.

• Collaborate with product owners and designers to translate product requirements and designs into reality

• Own and develop feature sets that involve responsive UIs and restful services to ensure a seamless user experience.

• Interact with the product, engineering, and business teams across geographies to leverage their expertise and contribute efficiently.

• Ensure that all components and the overall application are robust and easy to maintain.

• Continuously optimize and improve the application performance

• Proactively acquire knowledge of the latest industry trends and best practices in mobile technologies to implement them and educate the teams to increase the effectiveness of technology solutions.

Requirements

• B.Tech/ B.S. or M.Tech/ M.S. or equivalent in Computer Science, IT, or related field

• 2-6 years of experience

Mandatory Skills

• 2+ years of experience designing and building production-level web applications including:

• Programming knowledge in JavaScript, NodeJS

• Good knowledge in developing front-end software, with deep experience in one or more relevant

front-end frameworks (ReactJs, Angular, Vue etc.).

• Expertise in Web/mobile app development using React Native

• Experience in product development on mobile platforms using React Native

• Familiar in developing backend (JS/Node/C#).

• Basic understanding of RDBMS databases

• Working knowledge of design patterns, SOLID principles, and development best practices. Ability to

independently write code and unit test cases

• Mastery of standard frontend technologies like modern HTML, CSS, JavaScript (we use React,

Redux, Webpack, NodeJS etc.), REST, and JSON.

Desirable Skills

• ES6/7, Node, package management /webpack/parcel.

• Exposure to data modeling with any of the database technologies.

• Full stack understanding of web/mobile/API/database development concepts and patterns.

• Experience in DevOps would be a plus.

• Experience in TypeScript would be a plus.

• Excitement about the latest trends in application design

Role - Technology Lead

Role Overview 

As a Tech lead, you will take an active role in the definition and evolution of standard practices and  procedures, working closely with the co-founders in building a team. You will be responsible for  defining and developing software for tasks associated with the developing, designing and  debugging of the software applications. The technology lead will be a part of the core leadership  team and will be involved in all crucial decisions. So apart from strong technical skills, leadership is  something we are looking for.  

Responsibilities  

▪ Work Experience between 3 to 5 years in large scale applications with desire to work in fast  paced startups  

▪ Must have led a team of 3 to 10 engineers. Excellent business understanding and  prioritization skills. Fully hands on with coding and up to date with technology trends. 
▪ Focus on code maintainability and performance of application and a demonstrated product  development ability.  

▪ Must be excellent with hiring and should have built a team from scratch or small size 
▪ Provide technical advice and assists in solving programming problems  

▪ Continuously create new and interactive features that would help to improve user  experience and user engagement.  

▪ Assist with troubleshooting of issues as needed 

Tech Stack -

Node Js, Nativescript, Angular, React, React Native, MongoDB, AWS.