Senior Fullstack Developer - Freelancer (Ruby on Rails and TypeScript)

Sorry, this job was removed at 10:16 a.m. (CST) on Wednesday, May 20, 2026
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6 Locations
In-Office or Remote
eCommerce • Fintech • Software • Financial Services • PropTech
The Role

We’re looking for a Senior Fullstack Developer - Freelancer


What We’re Looking For
    • A Full-Stack Craftsman: You are an expert in Ruby on Rails and TypeScript, capable of building everything from complex dashboards and billing UIs to sleek documentation platforms.
    • The "DevEx" Champion: You have a natural empathy for other developers. You’ll develop deep knowledge of our platform (Pub/Sub, Chat, LiveSync) and use the product yourself to gain a first-hand understanding of the developer experience.
    • Comfortable with Ambiguity: You thrive in high-level vagueness. You can take a feature from a loose concept to a shipped product with minimal hand-holding, identifying problems and proposing solutions independently rather than waiting for a roadmap.
    • Accountable & Reliable: You take pride in high-quality, well-tested code. You meet your delivery commitments, provide realistic estimates based on technical complexity, and communicate proactively if a timeline is ever at risk.
    • An Owner: You monitor what you build in production and take personal ownership of quality issues. You see a feature through its entire lifecycle, from the first line of code to the final metric.
What do we mean by freelance?
  • Read more at Monterail Tech Network

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The Company
HQ: Wrocław
104 Employees
Year Founded: 2010

What We Do

Monterail is a full-service software development company with 130+ experts on board delivering meaningful software for the fintech, proptech, wellness, and eCommerce sectors. For over 13 years now, we use Ruby on Rails and Flutter to build beautiful web and mobile applications. We have delivered 390+ successful projects for over 235 clients from different parts of the world. In 2016 & 2017 we were recognized by Deloitte as one of the fastest-growing tech companies in Central Europe as well as listed in the Financial Times 1000 rank two times in a row, in 2018 and 2019.

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