Sr 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.

Remote position

Full-stack developer | .NET Core + Angular

Are you...

• Interested in working at a successful, well-funded scale-up where every team member can make a huge contribution?
• Keen to make software that people will use every single day to make their lives easier?
• Excited to work on greenfield projects with responsibility and independence?
• Ready to develop and use your skills across our frontend, backend and mobile offerings?
• Meticulous about quality, and gifted with a strong desire to write beautiful code?

About the company

KeyNest solves the key exchange problem for Airbnb users. Our worldwide network of over 4,000 shops store keys so that Airbnb guests / cleaners / contractors can pick them up whenever is convenient for them. As a global partner of Airbnb we’ve checked-in over 2 million guests.

Why we need you

As the entire Airbnb ecosystem increasingly relies on KeyNest, our customers expect us to integrate additional features without reducing the ease of use that our customers love. This is why we continue to invest in beautiful, intuitive user interfaces that integrate with every tool and are used by our customers, their guests and staff, as well as our own staff.

A product manager, a team lead, two full-stack developers, one mobile developer, and a UX designer make up our product team. Who will serve as your mentor. We are looking for a developer who cares about how their code affects users so that we can work together.

With a genuine passion for high quality work, attention to detail and readiness to own your own projects, you will be looking for a new and exciting challenge which allows you to use your experience to drive change and maintain the high standards of our organisation.

Our Tech Stack

• C# MVC modern tech stack
• .Net Core
• Front end web in TypeScript & Angular
• Test Driven Development (TDD) and follow SOLID design principles.
• EF 6.0
• SQL Server 2017
• Agile experience (Scrum, Kanban)
• TFS
• Cloud hosted in Azure with micro-services architecture

Your qualities

• 5+ years experience in C#
• Experience with .NET core
• Front-end web experience in Angular and CSS
• Track record of building great products
• You’ll love the idea of being a big part of a small team. Current team size is 5.
• Motivation and ambition to succeed in a fast-paced environment
• Not afraid to take on responsibilities

What we offer

• Crucial role in a funded, dynamic & fast-growing scale-up shaking up the sharing economy
• Competitive salary based on relevant experience
• Flexible working for our most committed staff
• Unparalleled opportunities to develop your career as the company develops rapidly

If you want to join the KeyNest team, please get in touch – we look forward to meeting you.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

• Develops code in C# and front-end technologies like Angular and React.
• Can test own code using unit testing framework.
• Able to understand and adhere to design principles and technical designs explained to him.
• Able to solve algorithmic and platform problems by researching online and trying out solutions

• ASP.Net, C#, SQL Server and JavaScript are must.
• MVC candidate should be preferred.
• Any other JavaScript library also an added advantage.

• Analysis
• Multitasking
• Communication Skills
• Results Oriented
• High Energy
• Self-Motivated

• Own our user interfaces with an eye to lightning-fast performance and a great user experience
• Implement compelling and intuitive UIs, shaping the design and feel of the product alongside our founders
• Write a significant amount of code for new and existing features
• Ship high-quality code and architecture
• Mentor engineers on the team, developing their skills and helping advance their careers
• Help shape the future of our engineering organization

Requirements

• You have been building production web applications for 5+ years and know the systems from top to bottom
• You know SQL and have significant programming experience on the frontend with React
• You have a BS/MS/Ph.D. in a scientific field or equivalent experience
• You want to work in a fast-paced, high-growth startup environment that respects its engineers and customers
• Comfortable working with a 100% distributed engineering team, collaborating on GitHub, Slack, Zoom, etc. in the open and as a self-starter.

Bonus points

• You have backend experience building microservices
• You’ve contributed to open-source libraries and actively participate in the development community (blogging, meetups, tweeting, etc.)
• You have experience building interactive data visualizations
• You have worked in TypeScript, Java, Go