USEO

Wrocław, Poland

Rails-first engineering partner since 2009 - senior Rails teams & legacy modernization

Since 2009, USEO has done one thing well: Ruby on Rails engineering for companies that treat their web application as the core of the business. From Wroclaw, Poland, our 15 senior engineers work two ways with clients in the US and Europe. Teams that need capacity get dedicated Rails developers who slot into their standups and tooling within days. Companies stuck on an ageing codebase get a modernization path - we have walked applications from Rails 2.x all the way to 8.x, one safe increment at a time, with no big-bang rewrite. Billing is time-and-materials in two-week sprints, all code and IP stays with the client, and our longest engagement is now past its thirteenth year. The first conversation is a free hour with an engineer, and it ends with an honest recommendation - even when that recommendation is not us.

15 people in their team

Speaks English, Polish

8 projects in their portfolio

Works remotely across the globe

Sortlist member since 2025

Founded in 2009

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Services

4 services offered by USEO

Description
Software development at USEO means one stack done properly: Ruby on Rails since 2009. We take products from first commit to production and stay for the years after - our longest client has been with us for over thirteen. The same senior team that builds new systems also rescues old ones, upgrading Rails codebases version by version without rewrites. No juniors, no vendor lock-in, two-week sprints, and an honest free first call with an engineer.
Skills in Software Development (2)
Ruby DevelopmentRuby on Rails Development
Works in Software Development (2)
Clients in Software Development (2)
Work For ImpactOthers | international
YoustyEducation | national
Learn more about Software Development
Description
Web applications are where USEO lives: Ruby on Rails backends, Hotwire or React front-ends, PostgreSQL underneath, and Sidekiq doing the heavy lifting. We build new products end to end and take over existing ones - including codebases several Rails versions behind that need careful, incremental modernization rather than a rewrite. Senior engineers only, two-week sprints, and code that your next team will thank you for.
Skills in Web Application (1)
Ruby Development
Works in Web Application (3)
Clients in Web Application (3)
EltingaEnergy & Oil
TriptradeTravel & Leisure
VagaruEducation
Learn more about Web Application
Description
Mobile at USEO is pragmatic: when a native build would burn the budget, we reach for FlutterFlow and low-code; when the product demands it, we build custom. We have shipped social apps for iOS and Android and mobile channels for e-learning platforms, always as MVPs that survive contact with real users. The same senior team owns backend and app, so nothing gets lost between two vendors.
Skills in Mobile App (1)
Hybrid Mobile App Development
Works in Mobile App (2)
Clients in Mobile App (2)
PubligoEducation
VersusSports
Learn more about Mobile App
Description
Website work at USEO usually starts where someone else stopped: a content-heavy site that needs a redesign, faster load times, working payments or donations, and a pile of overdue technical maintenance. We rebuild with the stack the situation calls for - from WordPress for content-managed sites to Rails when the site is really an application - and hand back something the owner can actually maintain.
Skills in Website Creation (1)
WordPress
Work in Website Creation (1)
Client in Website Creation (1)
Beyond the OrphanageNon-profit
Learn more about Website Creation