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About Appstronauts
Boutique team. Senior people. Straight answers.
Appstronauts has been building software for European companies since 2014. We are a boutique software house from Poland that extends engineering teams in DACH and the UK.
Trusted by engineering teams at
Who we are
Boutique by choice
We could have grown into a big outsourcing company. We chose to stay small and senior, because that is what our clients actually need: people who make good decisions in their codebase from the first sprint.
- 20 engineers in .NET, JavaScript, Dynamics 365 and AI, 12 of them senior.
- Business and system analysts, project managers and testers in-house.
- Long-term work with companies such as Cisco (US & UK), Solutions30 (France & Luxembourg), EF Education First (Switzerland), Privalgo (UK) and Decathlon.
- Central European time, English and German, a short flight from our clients.
Founder-led
You talk to the people who run the company
Appstronauts is owned and run by its two co-founders, who have been building the company together for 13 years. No account managers in between: you deal directly with the people who make the decisions.
- Runs Appstronauts day to day: partnerships, new opportunities and the team
- Knows every engagement we run, so you get straight answers fast
- Host of Tech Startups in the Pub, a meetup that brings together the tech community in Warsaw
- Sets our strategy and the technology direction of the company
- Brings new technology in early, from AI to new ways of building software
- Host of Podcast Biznesowy: conversations on business, finance, technology and the trends shaping entrepreneurship
In person
We prefer meeting face to face
We meet our clients regularly, in person. We work as part of their team, not as an outside vendor, and we show up at the industry events where our clients are, from huge industry conferences to niche local tech meetups.
How we work
What you can expect from us
- 01
Quality over quantity
We would rather do fewer things well. Senior people, tested code and clear documentation.
- 02
Straight answers
If we are not the right fit, we say so. If something is going wrong, you hear it from us first.
- 03
We keep our promises
Deadlines, people and budgets we commit to are the ones we deliver.
- 04
Continuity is on us
Holidays, sick days and replacements are our job, so your work keeps moving.
Where we are
Close to our clients
Warsaw, Poland
Head office
Appstronauts Sp. z o.o.
Rzymowskiego 53, 8th floor, 02-697 Warsaw
Our main HQ. Visit us!
London, United Kingdom
Appstronauts LTD
71-91 Aldwych, London, WC2B 4HN
hello@appstronauts.co
Awards
Recognised by our clients’ reviews
A company’s value and approach are best seen in the reviews it receives. Our clients’ feedback has led B2B review platforms to list us among the best software development companies and leaders in Eastern Europe.
Security & trust
Ready for your procurement and security review
We work with companies like Cisco and EF Education First, so the paperwork is part of the job. Whatever your policies require, we sign and follow.
NDA, before anything else
We sign your NDA before you share anything about your project.
Data Processing Agreement
A GDPR-compliant DPA whenever we process personal data on your behalf.
Professional liability insurance
Our work is covered by professional liability (OC) insurance, with details for your procurement team on request.
Your hardware, your accounts
If your security policy requires it, our engineers work only on your laptops, VPN and accounts.
Certified engineers
Most of our engineers hold Microsoft, AWS, Google Cloud or Claude certifications.
AI on your terms
We agree up front which AI tools and models can be used on your code and data, and nothing else is.
Let’s talk
Want to see if we are a fit?
Book 30 minutes with me. Tell me about your team and plans, and I’ll tell you honestly whether we can help.
or email radek@appstronauts.co