Product Designer-Builder | StellarTech

Role: Product Designer-Builder

Company: StellarTech

Location: Remote. StellarTech has offices in Warsaw and Cyprus if you'd like to work from one. The team overlaps 10:00–16:00 CET. Search focus: Poland, Czech Republic, Romania, Serbia, Georgia, Kazakhstan, Armenia, Cyprus, Dubai and the wider Middle East; Western Europe is also possible. We can't consider Russia, Belarus or Ukraine at the moment.

Job Type: Full-time, B2B contract

Compensation: €4,500–5,500/month gross, paid in USD

About StellarTechStellarTech is a self-funded multi-app company that launches consumer mobile products in different domains. It is profitable, moves at startup pace and is aiming for $1B in revenue.

You would join Smartimi, the company's biggest and most mature app, as the design partner of its PM, Darya. Around you: a content team that builds templates, a product analyst, engineers and QA. The Head of Product has a UX background himself. The team speaks Russian; the users speak English.

What you are expected to do:Take raw problems, ideas and initiatives and turn them into flows, prototypes and shipped UI for a consumer mobile app.

Work as a pair with the PM, and own some initiatives fully, from idea to release to reading the numbers.

Work directly with engineers and review the build before it ships.

Run A/B tests, read the results in Amplitude and plan the next iteration.

Talk to users: run interviews in English and launch quick surveys.

Build features yourself with vibe-coding or no-code tools when that's faster. The team has a way to test and ship them.

Marketing banners and funnels are handled by a separate team, so they are not part of this role.

What you need to succeed:3+ years in product design, with at least 2 (ideally 3) in consumer mobile apps. B2B-only backgrounds won't be a fit.

Strong, modern mobile UX and UI craft. The Head of Product looks closely at portfolios, so yours should show it.

Ownership: when a problem lands on your desk, you carry it through without waiting to be told the next step.

Product thinking: you care about product metrics and experiments, not only the interface.

Experience running user interviews. Usability testing and research methods can be learned on the job.

English at B2–C1 and Russian.

Clear, structured communication, including when you're thinking out loud with the team.

You enjoy a high pace and take direct feedback well.

You want to build good things for users, not just hit numbers at any cost.

Nice to have: an app or side project you launched yourself, and builder or no-code skills.

What you get:A direct partnership with a strong PM, and a Head of Product who cares about design.

Real ownership, access to analytics and A/B data, and room to build things yourself.

Remote work, offices in Warsaw and Cyprus, and an offsite about once a year.

21 calendar days of paid vacation plus 10 public holidays of your country, and 7 paid sick days.

€50/month towards health insurance after probation, and a MacBook Air (13" or 15").

€4,500–5,500/month gross on a B2B contract with StellarTech's Cyprus entity, paid in USD. You'll need your own sole proprietorship. Probation is 3 months.

How to applyApply through hirehire: https://jobs.ashbyhq.com/hirehire/348181a6-cb98-4401-86cb-a1ca508b9e3c. Add your LinkedIn profile or CV and a link to your portfolio. If your portfolio is password-protected, include the password in your application. The process: a 30-minute call with hirehire, a portfolio review with the Head of Product, an interview with the PM, a 30-minute call with the Head of Product, and a live whiteboard challenge in Figma with the team. It usually takes about a week.

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