We orbit around the stars.

What our clients say

Dependable Subcontractor

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All work was delivered on time and according to best coding practices. Reliable execution, clean handover, and no missed deadlines.

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Dariusz Tomoń
CEO / Owner
ecomplus.pl

Marketing Platform That Performs

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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.

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Grzegorz Miller
CEO / Owner
millermedia.pl

SEO-Ready Code Delivery

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Cosmonauts.dev delivered a website with perfect technical scores: 99/100 Mobile, 100/100 Desktop. Their development meets the strictest SEO/SXO standards.

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Łukasz Rogala
SEO/SXO Visioner & Strategist
verticalseo.io

Precise Web Delivery

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Every feature we requested was implemented as expected. The team overdelivered on technical functionality and UI quality.

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Piotr Arent
CEO & Owner Arent Capital Holding/
Artimex S.A. / Agro Artim Sp. Z o.o. /
YPOer
artimex.pl , artimex.eu

Fast Impact on Performance

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Within days, cosmonauts.dev delivered a high-performance server setup that boosted our store’s speed and capacity. Clear, focused execution.

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Piotr Maroszek
Head of eCommerce at Maro Home
marohome.pl

Odoo Automation That Scales

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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.

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Jakub Drożdż
Brand & Sales Manager at MOVO Training
movo.training

Reliable Execution Partner

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Cosmonauts.dev delivered our web project on time and as specified. They proved to be a stable digital partner with zero delays.

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Mikołaj Zdunek
CEO / Owner
duneko.pl , ladiesgym.pl

Consistent Business Growth

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Thanks to the tools built by cosmonauts.dev, we expanded our interior design reach and attracted more customers. Their solution supported our digital growth exactly as planned.

Case study
Aleksandra Wachowicz

WooCommerce at Scale

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Cosmonauts.dev handled our large WooCommerce setup with ease. They clearly understand how to build scalable, stable eCommerce infrastructure.

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Mateusz Salamon

150% Conversion Growth

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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 →
Oskar Chrzanowski
CEO / Owner
movo.training