Expert Rails Developers
Who Understand Your Business

We've been part of the Ruby on Rails ecosystem since 2006 — contributing to open-source, sharing knowledge through blog posts and talks, and supporting the community. Our deep expertise, guided by best practices like Domain-Driven Design, allows us to tackle complex problems efficiently.

To deliver real value, we go beyond code. We take the time to understand your business, its challenges, and goals, ensuring our solutions drive meaningful impact.

Let's work together!

Services

Use our skills to modernize legacy code, enable growth, and preserve stability.

Ruby on Rails Development

We save legacy Ruby on Rails applications from collapsing and improve them to support your business growth. Whether it is hard to add new functionality or application needs performance optimization, we'll get it back on the right track and support you with further steps.

Learn more →

Ruby on Rails Upgrades

Keeping your Rails app up-to-date is crucial for security and performance. We handle seamless migrations to the latest Ruby and Rails versions, ensuring minimal downtime and maximum reliability.

Learn more →

Workshops & Mentoring

As experts in software development, we share our knowledge and experience through professional workshops & mentoring, helping teams better understand, design, and develop complex systems.

Event Storming Workshop → Rails + Domain Driven Design Workshop → Hotwire Workshop → Code Mentoring →

Frontend development

We craft modern, responsive UIs that integrate seamlessly with Rails backends. Our expertise covers both React and Hotwire, allowing us to build interactive applications efficiently. We also help businesses transition from React to Hotwire, simplifying frontend architecture while maintaining a great user experience.

Learn More →

Proven results, trusted by teams worldwide

Clutch.co
5/5 on Clutch

The Arkency team comprises professionals at the highest level.

Elad Moshe

Director of Engineering

🇺🇸 USA

Biletto

It is rare to find a technical partner where the collaboration feel like an extension of our own company.

Patrick Borre

CEO

🇩🇰 Denmark

Anenta

Arkency has an impressive depth of knowledge and expertise.

Scott Ellard

Technical Director

🇬🇧 UK

Case Studies

Real-world examples of how we’ve tackled challenges and delivered effective solutions.

Trezy Fintech

How Trezy Transformed Financial Data Processing with Arkency's Event-Driven Approach.

Learn more →

Billetto Event Platform

Discover how Billetto scaled faster, deployed instantly, and thrived with Arkency’s architectural expertise.

Learn more →

Team

We are a team of experienced developers who combine deep technical expertise with a business-driven approach.

  • SINCE 2006 Picture of Andrzej Krzywda

    Andrzej Krzywda

    CEO

    Founder of Arkency, software architect specializing in DDD, CQRS, and event sourcing. He authors books and courses, helping companies build scalable applications.

  • SINCE 2007 Picture of Marcin Domański

    Marcin Domański

    Fullstack Developer

    Senior Fullstack Developer.

  • SINCE 2008 Picture of Jakub Kosiński

    Jakub Kosiński

    VP of Context Switching

    Senior Fullstack Developer. Helping businesses understand their needs & grow using web software solutions.

  • SINCE 2010 Picture of Paweł Pacana

    Paweł Pacana

    VP of Hard-to-swallow Pills

    Holistic Developer, Senior Software Architect.

  • SINCE 2013 Picture of Tomasz Patrzek

    Tomasz Patrzek

    Fullstack Developer

    Senior Fullstack Developer.

  • SINCE 2014 Picture of Szymon Fiedler

    Szymon Fiedler

    VP of Memes

    Strategic Problem–Solver for Complex Software Challenges. Senior Software Engineer.

  • SINCE 2014 Picture of Mirosław Pragłowski

    Mirosław Pragłowski

    Fullstack Developer

    Senior Fullstack Developer.

  • SINCE 2014 Picture of Jakub Rozmiarek

    Jakub Rozmiarek

    Fullstack Developer

    Senior Engineer, expert in high-traffic web apps, online payments, and legacy refactoring.

  • SINCE 2021 Picture of Maciej Korsan

    Maciej Korsan

    VP of AD⚡️HD

    Human-browser relations 🤖 Seasoned UI Developer, conference speaker, Hotwire enthusiast.

  • SINCE 2021 Picture of Piotr Romańczuk

    Piotr Romańczuk

    Fullstack Developer

    Senior Developer, DevOps specialist. Interested in Domain Driven Design.

  • SINCE 2022 Picture of Piotr Jurewicz

    Piotr Jurewicz

    Fullstack Developer

    Senior Business Fullstack Engineer.

  • SINCE 2022 Picture of Łukasz Reszke

    Łukasz Reszke

    Fullstack Developer

    Senior Software Developer, Domain-Driven Design and EventStorming passionate.

  • SINCE 2022 Picture of Tomek Stolarczyk

    Tomek Stolarczyk

    Fullstack Developer

    Senior Software Developer, Domain-Driven Design and EventStorming passionate.

Community

We proudly contribute to the Ruby on Rails community, sharing our expertise through blog posts, conference talks, and active open-source participation.

Arkency Blog

We've been doing this since 2012, breaking down Rails, sprinkling in DDD, and helping you conquer those day-to-day coding hurdles.

Latest Blog Posts

View all posts →
RES Logo 1.4k+ stars

Rails Event Store

The open-source event store for Ruby & Rails.

Arkency actively maintains and develops Rails Event Store, a robust library for publishing, consuming, storing, and retrieving events. Simplify your event-driven architecture, decouple business logic, and gain full control over event flow in your application.

Learn more →

Conference Talks

Big event or cozy meetup, we're always up for sharing our Rails and DDD know-how with fellow enthusiasts.

Upcoming:

Past:

Full archive of the talks soon!