We orbit around the stars.
What our clients say
Dependable Subcontractor
All work was delivered on time and according to best coding practices. Reliable execution, clean handover, and no missed deadlines.
Case study →
Case study →

Dariusz Tomoń
CEO / Owner
ecomplus.pl
ecomplus.pl
Marketing Platform That Performs
Cosmonauts.dev built a custom influencer marketing platform with campaign workflows, approvals, and real-time collaboration. It reduced our coordination time by 60% and significantly improved delivery.
Case study →
Case study →

Grzegorz Miller
CEO / Owner
millermedia.pl
millermedia.pl
SEO-Ready Code Delivery
Cosmonauts.dev delivered a website with perfect technical scores: 99/100 Mobile, 100/100 Desktop. Their development meets the strictest SEO/SXO standards.
Case study →
Case study →

Łukasz Rogala
SEO/SXO Visioner & Strategist
verticalseo.io
verticalseo.io
Precise Web Delivery
Every feature we requested was implemented as expected. The team overdelivered on technical functionality and UI quality.
Case study →
Case study →

Piotr Arent
CEO & Owner Arent Capital Holding/
Artimex S.A. / Agro Artim Sp. Z o.o. /
YPOer
artimex.pl , artimex.eu
Artimex S.A. / Agro Artim Sp. Z o.o. /
YPOer
artimex.pl , artimex.eu
Fast Impact on Performance
Within days, cosmonauts.dev delivered a high-performance server setup that boosted our store’s speed and capacity. Clear, focused execution.
Case study →
Case study →

Piotr Maroszek
Head of eCommerce at Maro Home
marohome.pl
marohome.pl
Odoo Automation That Scales
Cosmonauts.dev delivered a full Odoo implementation tailored to our business and market. Manual tasks were automated, freeing time for growth. Our brand and sales have scaled up.
Case study →
Case study →

Jakub Drożdż
Brand & Sales Manager at MOVO Training
movo.training
movo.training
Reliable Execution Partner
Cosmonauts.dev delivered our web project on time and as specified. They proved to be a stable digital partner with zero delays.
Case study →
Case study →

Mikołaj Zdunek
Consistent Business Growth

Aleksandra Wachowicz
CEO / Owner
aleksandrawachowicz.pl
aleksandrawachowicz.pl
WooCommerce at Scale
Cosmonauts.dev handled our large WooCommerce setup with ease. They clearly understand how to build scalable, stable eCommerce infrastructure.
Case study →
Case study →

Mateusz Salamon
CEO / Owner
sklep.msalamon.pl
sklep.msalamon.pl
150% Conversion Growth
Our new store boosted mobile conversions by 150% and cut bounce rate by 63%. The UX is intuitive, especially on mobile – customers flow naturally through the funnel.
Case study →
Case study →

Oskar Chrzanowski
CEO / Owner
movo.training
movo.training