Skip to main content
Serafeim Maroulis

Hey, I'm Serafeim
Ruby on Rails contractor based in London UK

I'm a Ruby contractor and consultant with years of experience in designing, developing, and delivering high-quality Ruby applications. I'm passionate about helping businesses succeed by building reliable and scalable software solutions. Whether you need to improve your existing Ruby codebase or develop a new Ruby application from scratch, I'm here to help.

I've built software for

What people say about me

If anyone would ask me to enumerate a dream dev team, Serafeim would definitely be amongst the best engineers I have ever met. During our time at Funding Circle, Serafeim was pragmatic, hands-on, focused, and goal-oriented. Together we navigated thousands of lines of legacy code, untangling a complex web of services that needed to evolve. Serafeim's capability to quickly create a mental model of something he's never seen before and swiftly conjure the necessary changes to accomplish our goals (as well as opportunistically refactoring the system to achieve higher code quality) was paramount to the success of our projects.

profile picture
Hugo Sereno Ferreira
Principal Engineer at Funding Circle

Working with Serafeim has been a real pleasure. Our paths crossed multiple times and it was always really easy to communicate and find the shared understanding of problems and solutions. Serafeim is a very capable technologist with a good understanding of not only how to build software but also more importantly how to architect, deliver and run it too. With his deep knowledge of Ruby and knowing best practices Serafeim is a valuable element to any team.

profile picture
Jakub Miarka
Technology Manager at Just Eat Takeaway.com

Got a question or interested in learning more?

I would be happy to chat with you and answer any questions you may have. I look forward to hearing from you!

Contact Me