As a Software Engineer at Den, you will build full-stack web applications that secure billions in assets for leading crypto institutions. Working directly with technical co-founders, you'll ship critical features across the TypeScript stack and help define the engineering culture as transaction volumes scale from $1B toward $18T.
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Software Engineer at Den
Join Den to build the secure home base for the $18T in assets moving on-chain. With transaction volumes skyrocketing from $1B to $7.5B in just one year, Den provides the essential wallet infrastructure for major players like Lido and Worldcoin. As an early engineer, you’ll work directly with technical founders to ship full-stack features that protect billions in real assets. If you’re a relentless builder with 1-4 years of experience and a passion for crypto, help us secure the future of the global crypto economy from our NYC office.
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Location
New York, United States
Compensation
Not Disclosed
Company
Den
About this role
Role overview
About the company
Den provides the most secure crypto wallet infrastructure for enterprises and institutions. The product is trusted by teams like Lido, Worldcoin, and over 800 others who have collectively transacted over $10B using Den. Transaction volume was just under $1B in 2024 and in 2025 that number exploded to $7.5B.
Our mission is to secure the world's largest organizations' crypto holdings. As global institutions continue to adopt cryptocurrency, Den will serve as the home base for more than $18T in deposits moving onchain. We're a well-funded team backed by some of the most successful organizations and individuals in crypto.
You can read more about our first $2.8M fundraise on CoinDesk, The Block, and Benzinga. We've raised additional funding since then that has not yet been announced to expand our team of fullstack software engineers.
What you'll do
What you will do
- Develop and scale full-stack applications using TypeScript, Next.js, and Node.js to facilitate secure, high-volume institutional crypto transactions.
- Collaborate with the co-founders to architect new features and make foundational technical decisions for the core wallet infrastructure.
- Bridge the gap between complex blockchain protocols and seamless user experiences using tools like Viem, Prisma, and PostgreSQL.
Who you are
Who this is a fit for
- Possesses 1-4 years of experience shipping production-grade code with a strong proficiency in TypeScript and the modern React/Node ecosystem.
- Demonstrates an insatiable curiosity for crypto and the ability to execute at high speeds in a fast-paced, high-ownership environment.
- Combines technical excellence with project management skills and the ability to make architectural decisions that will scale with the company.
Why this role
Why this role is remarkable
- Join a high-growth crypto infrastructure leader that saw transaction volume explode from $1B in 2024 to $7.5B in 2025.
- Work directly with technical founders from ConstitutionDAO who have deep experience in smart contract development and scaling backend infrastructure.
- Contribute to a mission-critical platform trusted by industry giants like Lido and Worldcoin to secure their most vital on-chain deposits.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Den wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.