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Senior Ruby Software Engineer (Warsaw)

Smart Pension LtdFull-time$100k - $245k*Warsaw, PolandJun 8, 2022

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Smart is a rapidly-growing fintech company transforming the retirement industry for the better. We’re changing the way people interact with their retirement savings using our award-winning platform which is powered by our inhouse technology. We’ve gone from a small start-up to a global industry-leader with over £2bn in assets under management. Join us to transform retirement, savings and financial well-being, across all generations, around the world.

The opportunity

We're a fun and diverse engineering team that enjoys solving problems with technology and working with best practices. We’re looking for an enthusiastic Ruby Engineer to join our growing team based in Warsaw. Ideally someone with commercial experience that is used to building modern applications.

Engineering at Smart

At Smart, we build working software that always works - and we do it fast! We’ve managed to thread the needle between speed and reliability, with double digit daily deploys into production and an exceptionally low rate of failure. Smart is disrupting an industry that has been particularly slow to adopt new technology. As a tech company (in culture, tools, and people) that does pensions, we’re uniquely positioned to shake things up!

We have the benefit of having adopted many engineering best practices from day 1. Our approach to code is simple: keep it small, clean, and ensure it has thorough test coverage. We don't ship code just to hit a deadline. Pensions are a long game. We're handling peoples retirement income, so the stability, security and accuracy of our platform is everything. But we also recognise that being able to deliver change and innovation at pace are our secret sauce!

Some interesting notes on the way we work:

  • Tech check! We use AWS, GitHub, Semaphore CI, Datadog, Docker, and Kubernetes, to name a few.
  • We are able to maintain at least 96% test coverage of our application through collaboration and strong code review practices, meaning we can focus on features rather than bug fixing.
  • Our team is passionate about OOP, TDD and DDD.
  • We ship software continuously, releasing new features to production up to 30 times a day.
  • We follow Agile practices and have a strong DevOps culture in place.
  • We have great internal mobility, meaning that we are able to give you exposure to the aspects that you would like to improve on or learn about. Progression and development are key, and we really invest in education!
  • We believe in diversity and inclusion, in and out. We have a diverse engineering workforce and over 80% of our Engineering team volunteered their time to be coaches at the recent Rails Girls London event – a free workshop aimed at making technology more approachable for women.
  • We empower our engineers to propose new ideas. For instance, we run hackathons where in 24 hours anyone can build and present new ways of thinking to the senior management team – most of these ideas wind up being implemented and put into production!

    About us

    At Smart, we're a diverse team, made up of people from different backgrounds, experiences and skills. Our goal is to build great products to help people plan for their financial futures. We’re constantly developing new ideas to help people look after their pension schemes, in the UK and abroad. We’ve grown to a team of over 500 talented people, all dedicated to creating the best experience for our customers. Recently we made it onto Great Places to Work UK's Best Workplaces 2021 at the no.22 spot for large companies! If you think you can help us build a smarter future, come and work with us.

    Smart Pension is committed to crafting an inclusive work environment with a diverse workforce. You will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.

    Our Recruitment Data Policy is here. Please click on the link if you have any questions about how we store your data or to know your rights.


    • Develop new user facing features
    • Engineering a better code base with your team
    • Work within a smaller 8-10 person agile engineering team, part of a wider Engineering organisation
    • Work on tickets assigned to you, this includes writing code and specs (tests) and checking that new code passes other test coverage
    • Review Pull Requests from other developers
    • Work in a collaborative, agile team environment
    • Be awesome at what you do best, code!
    • Occasionally pair with other Engineers - we have pairing machines
    • Help design solutions
    • Supervise more junior member of the teams


    • Significant commercial experience with Ruby, working in a Ruby on rails environment
    • Deep understanding of object-orientated programming
    • Desire to work with Domain Driven Design
    • Love to work using TDD
    • Understanding of relational database (MySQL, PostgreSQL)
    • Understanding of web design patterns
    • Previous experience working in a company scaling up is useful, but not essential
    • Most importantly, a desire to learn, grow, working with an amazing team and deliver software


    We offer competitive salaries, great colleagues and excellent benefits, including:

    • 26 days holiday per year, plus Polish bank holidays. Two extra days holiday - Christmas Eve and New Year Eve
    • 2250 PLN personal training budget every year to spend on courses or conferences or training materials
    • Flexible working hours
    • Relocation package (up to 10 k PLN)
    • Private medical care including dental care
    • Multisport Plus Package
    • Online English lessons (within working hours)


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