TypeScript Engineer

About the role

We’re looking for a Full-Stack Engineer who moves confidently across both frontend and backend — fluent in TypeScript, comfortable in Node.js internals, and curious about tooling beyond the usual stack. This isn’t just a UI-heavy role with a backend tacked on. You’ll contribute meaningfully to frontend architecture and performance, while also digging into backend challenges involving gRPC, cryptography, Electron, and efficient service design.

It’s a good fit if you think in systems, care about how things run under the hood, and value maintainability as much as feature velocity.

Project scope

We’re part of a long-term engineering partnership with a Swiss digital wallet provider, active in crypto and investment fund management for over two decades. The platform allows secure wallet management, identity control, and transaction signing — delivered across desktop and web via Electron. Your role spans building user-facing interfaces in React and performance-tuned backend services in Node.js, communicating via RPC-style APIs and handling cryptographic operations with precision.

Stack

TypeScript, React, Node.js, RPC (protobuf), Electron, Blockchain integration

Challenges

1. Maintaining consistent UX across platforms (Electron, web)
2. Designing efficient RPC APIs and data flows
3. Integrating cryptographic workflows with wallet and transaction layers

Team

You’ll join a multidisciplinary team of full-stack engineers, working alongside domain experts and product managers from the client side. Tight collaboration and cross-review processes are standard.

What do we expect?

1. Willingness to learn and explore unknown areas of uncommon domains
2. React and Node.js experience
3. TypeScript experience
4. Be self-driven pillar of the team
5. Work experience with products, cooperation with Architects to establish long-term foundations for the maintainable codebase
6. Strong focus on code quality and tests
7. Strong attention to detail and a desire to continually improve
8. Fluency in English, both written and spoken (at least B2 English level)

Don’t worry if you don’t meet all the requirements. What matters most is your passion and willingness to develop. Moreover, B2B does not have to be the only form of cooperation. Apply and find out!

What's on offer?

1. Flexible hybrid work model - you decide where & when to start the work. You can work remotely or join us in one of our modern offices (Krakow, Rzeszow, Kielce; Wroclaw), always located in the city centres. Just choose what suits you best!
2. Language lessons - we refund up to 500 PLN (per quarter) for learning all languages you would like to take! What’s more, we refund up to 1 000 PLN (per quarter) for learning the English language.
3. Virtusity – our training division - we really value the personal growth of our #VLteam. That’s why we have a rich offer of internal courses, workshops etc. (technical, as well as soft skills training) conducted by our employees.
4. Training Package - use our training budget of up to 2 500 PLN (yearly) and 24 paid work hours for your development. You can choose the training from our Virtusity portfolio or external conferences, courses, workshops etc.
5. Home office reimbursement - you can rent all the necessary equipment from our offices, but you can also get up to 800 PLN financial support to set up your WFH.
6. Multisport card or MyBenefit points - do you like sports and want free unlimited admission to sports facilities in your city? Or maybe you prefer the cinema, SPA in the mountains, delicious dinner or Allegro shopping? At VirtusLab, you decide whether you choose a sports card or vouchers for countless attractions.
7. Private healthcare - our insurer's offer allows you to have free health advice, treatments, diagnostic tests etc., in more than 1,500 clinics operating all over the country.
8. Stretching - feeling tense or tired? Take a break from work and join our online stretching sessions.
9. Building tech community - we run 9 meetup groups in Kraków, Kielce, and Rzeszów and support many other local initiatives. We also contribute to numerous open-source projects (world-famous solutions and create our own ones). Check out also Sphere.it - our unique platform with tech videos and online events.
10. Having fun together - cycling tours, kayaking, fun at rope park, pizza party or a mountain trip with SPA? Yes, we've got it all. It's never boring with #VLteam!