Senior Developer

Who we are

We are Tesseract. We supercharge the crypto economy by enabling loans that clear in less than a second. Our goal is to unleash the kind of financial agility that’d be impossible to do in the traditional currency economy.

As ambitious as that sounds, we already have a proven record. We’ve already extended hundreds of millions of credit, our revenue just topped half a million per month, and we are seeing 20x growth year-over-year.

And we’re only getting started.

We’re a forerunner in the digital asset lending industry – a sector that has soared to over 10 Billion USD, with a six-fold growth in last year alone. This will grow as crypto grows, into a trillion dollar industry. Tesseract will be at the centre of this industry.

We intend to get there with our can-do attitude and our cutting-edge technology. If you see yourself fitting in, we’ll be happy to have you.

We are based in Helsinki, founded by experienced entrepreneurs, and backed by leading Nordic and global investors.

About the role

If you’ve read the above, you know that we’ve picked ourselves a beast of a challenge. If that excites you, you’ll fit right in.

As a Senior Developer, you’ll work with your teammates and pick one out of a range of modules to work on (or perhaps propose a module of your own and put it on the roadmap). Depending on your expertise, you’ll work on either the front-end, the backend, or both 🦄. All our modules are highly responsive and resilient to surges and adversarial behavior.

Your general responsibilities are:

  • Ship high quality code and measure its impact.
  • Strike the right balance between quick iteration and sound engineering.
  • Provide feedback to your peers and mentor junior engineers and interns.
  • Manage yourself; this is a zero-hierarchy environment.

You should have two or more of the following skills:

  • Be proficient in either TypeScript or Javascript + another strongly typed language
  • Deep experience in different backend technologies (databases, caches, queues) and cloud infra (we use Azure)
  • Bonus point if you have experience with C# and Python
  • Strong bonus point if you’re proficient in functional programming (Clojure or other lisps, and Haskell/OCaml)

Fast track to leadership role

If you thrive in a leadership role (e.g., Product Owner/Lead Engineer/VP of Engineering) then the Senior Developer position can be your fast track to such roles. We are a rapidly growing company, and as a proven engineer, you’ll have the freedom to bring more people onboard and hire your own team.


💰 Fantastic compensation and stock package.

✨ A work culture with the Finnish ethos of balancing hard work and family life.

🏖️ 3 weeks of guaranteed paid leave each year.

🌏 Fast-paced but flexible working hours with remote work if that’s your style.

🌱 Opportunity to quickly grow into leadership roles.

🧠 A meritocratic vibe with absolutely no hierarchy.

If you are passionate about cryptocurrencies and want to be in the forefront of defining digital finance, Tesseract might just be the right place for you.


The application process

1️⃣ Send us your best application

2️⃣ Pre-qualification (cover letter, qualifications, references)

3️⃣ First interview

4️⃣ Second interview

5️⃣ Third interview

6️⃣ Founder interview

7️⃣ Hiring & onboarding


We encourage applicants from all backgrounds to apply! No Finnish language requirement. If you are passionate about cryptocurrencies and want to be in the forefront of defining digital finance Tesseract might just be the right place for you.

Or, know someone who would be a perfect fit? Let them know!


Lapinlahdenkatu 16
00180 Helsinki Directions

  • Take it easy

    We need you to relax every now and then. That's why all of our permanent employees get at least 3 weeks paid time off, guaranteed.

  • Grow with us

    We desire everyone's innate drive to learn more. To help you succeed and keep on learning, you'll have a no-bureacracy personal learning budget waiting for you.

  • Stay inspired

    We sometimes take time off together to focus on not working. Whether it's a private art gallery exhibition, pizza day, or a board game night you can be sure to de-stress for a moment.

Our way

The strong relationships in our diverse team of high performers are built upon drive, excellence, curiosity, and a bit of fun.


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