Principle Full Stack Developer

About Intro

Intro is a dating app where LGBTQ South Asians find love. Built by Queer Desis in New York for the 100 million queer South Asians around the globe who deserve a space of their own. Our mission: help 1 million Queer Desis find love by the end of 2026. We’re creating a safer, more intentional, and community-driven dating experience — one that celebrates identity, culture, and connection.

The Role

We’re looking for a Founding Full-Stack Engineer who thrives in 0→1 environments. You’ll take ownership of architecture, design, and execution across backend, web, and mobile (iOS/Android) — helping shape both the product and the culture of the company.

You’ll be joining at the earliest stage — working directly with the founding team on everything from feature development to infrastructure decisions and product strategy.

Responsibilities

• Architect and build scalable backend systems (APIs, data models, authentication, messaging, matching).
• Lead development across web and mobile clients (React, React Native, Swift/Kotlin).
• Collaborate on product design and iterate quickly on user feedback.
• Set up CI/CD, testing, and monitoring pipelines.
• Help define the tech culture, best practices, and early engineering team standards.
• Contribute to early hiring and mentorship as we grow.

You Might Be a Great Fit If You

• Care deeply about building for LGBTQ and South Asian communities.
• Are motivated by impact and ownership, not just code.
• Thrive in ambiguity and love solving real user problems fast.
• Want to help define the technical and cultural DNA of a mission-driven company.

Interview Process

1. AI Screen – Initial automated technical and culture-fit assessment.
2. Web Challenge – Build a small feature for the web app to demonstrate frontend and full-stack skills.
3. iOS Challenge – Build a small feature for the iOS app to showcase mobile development and design sense.
4. Android Challenge – Build a small feature for the Android app to highlight cross-platform depth.
5. Founder Chat – Meet with the Founder to discuss vision, values, and long-term fit.

What We Offer

• Competitive salary.
• Full-time (40 hours/week) with flexible hours.
• Opportunity to shape a product with global cultural impact.
• Work directly with the founding team building something that truly matters.

We are seeking an experienced Technical Lead with expertise in the MERN (MongoDB, Express.js, React.js, Node.js) stack to join our dynamic team. As a Technical Lead, you will play a pivotal role in leading the development of cutting-edge web applications. You will collaborate with cross-functional teams, mentor junior developers, and contribute to architectural decisions.

Responsibilities:

1. Technical Leadership:

• Lead a team of developers in the design, development, and deployment of high-quality web applications.
• Provide technical guidance, mentorship, and support to team members.
• Take ownership of the technical architecture, ensuring scalability, reliability, and maintainability.

1. Development:

• Hands-on development using the MERN stack to build robust and scalable web applications.
• Collaborate with the team to define technical specifications and implement solutions according to requirements.

1. Code Review and Quality Assurance:

• Conduct code reviews to ensure adherence to coding standards, best practices, and architectural guidelines.
• Implement and maintain automated testing processes to guarantee the quality of deliverables.

1. Technical Strategy:

• Collaborate with product managers, designers, and other stakeholders to define technical requirements and priorities.
• Contribute to the development of the technical roadmap and ensure alignment with business goals.

1. Problem Solving:

• Identify technical challenges and provide innovative solutions.
• Troubleshoot and resolve technical issues as they arise.

1. Documentation:

• Create and maintain technical documentation including architecture diagrams, API specifications, and system documentation.

1. Stay Updated:

• Keep abreast of industry trends, emerging technologies, and best practices in web development.

Requirements:

• Bachelor's or higher degree in Computer Science or a related field.
• Proven experience as a Technical Lead or Senior Developer with expertise in the MERN stack.
• Strong proficiency in MongoDB, Express.js, React.js, and Node.js.
• Proficient in front-end technologies such as HTML, CSS, and JavaScript.
• Experience with version control systems (e.g., Git).
• Familiarity with cloud platforms (e.g., AWS, Azure) and containerization (e.g., Docker).
• Excellent problem-solving and analytical skills.
• Strong communication and leadership abilities.
• Ability to work collaboratively in a cross-functional team environment.

Job Title: MERN Stack Developer with Blockchain ExpertiseJob Description:

We are looking for a dynamic and skilled MERN Stack Developer with a specialization in Blockchain to join our team. As a Blockchain MERN Stack Developer, you will be instrumental in crafting and implementing blockchain solutions, utilizing the MERN stack for both front-end and back-end development. Your role will contribute to the creation of secure, scalable, and decentralized applications.Responsibilities:

1. Develop and design applications based on blockchain technology using the MERN stack.
2. Implement and integrate smart contracts and decentralized solutions into the development process.
3. Collaborate with cross-functional teams to define project requirements and specifications.
4. Create and maintain high-quality, reusable, and reliable code.
5. Ensure the application of secure coding practices to uphold the integrity of blockchain solutions.
6. Utilize front-end technologies, particularly React, to build engaging and user-friendly interfaces.
7. Work closely with UX/UI designers to implement visually appealing and intuitive interfaces.
8. Participate in code reviews, offering constructive feedback to team members.
9. Identify and troubleshoot issues related to blockchain and MERN stack development.
10. Stay informed about the latest trends, tools, and emerging technologies in blockchain.

Requirements:

1. Proven experience as a Full Stack Developer with a specific focus on blockchain technology.
2. Proficiency in the MERN stack (MongoDB, Express.js, React, Node.js).
3. Experience with major blockchain platforms such as Ethereum, Hyperledger, or similar.
4. Solid understanding of smart contract development and implementation.
5. Familiarity with decentralized application (dApp) development.
6. Knowledge of cryptography and principles of blockchain security.
7. Familiarity with version control systems, such as Git.
8. Strong problem-solving and analytical skills.
9. Excellent collaboration and communication skills.
10. Bachelor's degree in Computer Science or a related field (or equivalent work experience).

If you are passionate about both blockchain technology and MERN stack development and thrive in an innovative environment, we encourage you to apply and contribute to our cutting-edge projects.

we are building a professional network for the top 1% of women with a simple mission - more women in leadership positions. we launched in may 2020, and have an early product-market fit (10k paying members, great nps, retention) and strong business signals. we are backed by some of the best investors in india. click https://love.leap.club/" target="_blank">here to read what our members say about us ❤️

our founding team members have previously built zomato, uber, linkedin, facebook, wework. our 0-1 journey is done and we are now ready to scale 🤞

about the role - full stack developer:

• you will work on a disruptive product that is in its early stages.
• you are someone with experience in building products that have significant user base/revenue and robust backend systems running in production catering to real-world users.
• 2+ years of experience in engineering with applied knowledge of restful api design principles and best practices are a must. 
• an ideal candidate would have exceptional application development skills with experience working with nodejs, react, typescript, cloud (aws), mongodb amongst other in-demand technologies.
• having a good understanding of cloud technologies, deployments, backend & frontend end-to-end operations is key for this role.

skills required:

• experience with building and deploying cloud-based backend systems. operating the backend at low latency, high availability, and quality
• experience with developing distributed systems and scalable real-time applications
• excellent programming skills in node.js, react, express.js with a solid understanding of event-driven architecture
• understanding of sql and nosql databases. experience with designing and maintaining scalable databases
• experience with 3rd party libraries and api integrations. eg. stripe, razorpay, etc
• strong problem-solving skills with an understanding of core algorithms and complexity analysis
• solid understanding of operating system fundamentals, networking and concurrency concepts
• experience with aws technologies like lambda, api gateway, beanstalk, ecs, ec2 etc
• experience with docker, kubernetes good to have

why you should work with us:

• you will be part of our founding team and get a front seat view of building a company. we promise a steep learning curve
• work with smart folks who like to have fun and don't take themselves too seriously
• independently lead projects and own your deliverables
• we are generous with esops for folks who treat leap.club like their own company
• 5 day work week, flexible leave policy, health and accidental insurance
• regular offsites and travel to gurgaon (our hq)

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our thesis:

there are 3 critical factors that help us live our best social-professional life -

1. connections & network
2. jobs and opportunities
3. learning & development (courses, coaching etc.)

in the next 5 years, leap.club will transform all three for our members.

• the current-gen platforms have a simple playbook - big networks, feeds, photos, followers/ influencers and monetize through ads. 
• the next gen networks will be smaller/focused and algo driven
• linkedin enables connections, jobs, learning but it's built for scale and not depth.

our goals :

• 2022 - 10,000 members and $1 mil+ annual revenue 
• 2024 - 100,000 members and $10 mil+ annual revenue 
• 2027 - 1,000,000 members and $100 mil+ annual revenue 

Requirement

1. 2+ Years of development experience in the full stack development (preferred MERN technology stack).
2. should be proficient in working with technologies like JavaScript, CSS, and JS with framework like NodeJs and ReactJS.
3. Strong skills and experience with programming, design, and architecture, and familiarity/experience with AWS and other cloud technologies.
4. Good Knowledge of APIs is a must.
5. Should have good knowledge of databases like Linux.
6. Experience working in an Agile/Scrum environment
7. Keen interest in emerging technologies with an aptitude to learn and adapt.
8. A basic understanding in  Java is a plus.

Responsibilities:

1. Should be able to work independently once proper guidance is provided.
2. Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations
3. Ensure timely completion of development activity.
4. Prepare training documents and provide training to internal teams on tools.
5. Consult, design, and develop well-structured, scalable in-house tools.
6. Should be able to write optimized business logic for business functions.

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 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. Too familiar with Agile methodologies.

Responsibilities

• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• 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

Requirements

• Proven experience as a Full Stack Developer or similar role
• Experience developing desktop and mobile applications
• Familiarity with common stacks like LAMP Stack and Mean Stack...
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)
• Knowledge of multiple back-end languages (e.g. PHP, 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
• Excellent communication and teamwork skills
• Great attention to detail
• Organizational skills
• An analytical mind
• Degree in Computer Science, Statistics or relevant field