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Senior Frontend Engineer

Tech & Product
Gdańsk, PL

Senior Front End Engineer Billy

At Billy we help micro businesses focus on what they do best, by providing simple business administration software. On our platform they can create invoices, subscriptions and integrate their e-commerce platform through our platform API’s. We let them manage their expenses via our web-app or mobile app, and even manage their payroll via our deep integration with Salary. More than 40.000 companies are registered and growing every day.

Who are we looking for?

We're looking for a senior engineer, who wants to contribute to a well architected and functioning web application based on React. You’ll be part of an awesome and experienced team of developers, and you appreciate an open, social team with a very flat level of management. We have half our team located in Gdansk and the other half in Copenhagen, and all feature teams work across the offices.

Our web-app is React and Typescript, based on a backend of REST-api’s and React Query to manage the communication. Our design system is documented in Storybook and tested using Chromatic. We release 3+ times per day and believe in small incremental improvements over cumbersome release processes.

To be successful with us, you’ll need a passion for software craftsmanship and product understanding too.

Who you are

A senior front end developer with 3-5 years of experience. We work with end-to-end responsibility, meaning you will be part of a team, who own everything from infrastructure to APIs and front end.

What we ask of you:

  • Collaborative: You want to learn from others and see the value of teamwork
  • Driven: You are self motivated and driven to improve your coding and team skills
  • Responsible: We give a lot of responsibility to our team members, and therefore you like to take responsibility for what you are doing. Ask all the questions, but the task is yours.
  • Tech stack: Our Front-End is written in React (functional-based) and Typescript. We have our own, internal Design System, fully documented in Storybook, visually tested by Chromatic. For a global state management we use the native Context API approach and react-query to communicate with the back-end. We use react-hook-form for advanced implementation of the forms, so would be nice if you have experience in this area. Styling is mostly done using ths CSS-in-JS approach (Styled Components). We have some parts of the codebase written in Ember; the connection between these two layers is done with Web Components. We also like to use linters, so we have strong eslint and prettier configuration plugged in.

What you'll do

  • Solve very real problems for very real customers.
  • Create new features based on our existing design system.
  • Add new components and elements to our design system to help speed up other developers in the teams.
  • Participate in planning and grooming sessions to break features into workable tasks.
  • Collaborate with product and design to find the best solutions for problems encountered by our growing base of users
  • Use your 10% time on improving things important to you.
  • Be a kick-ass colleague and have fun.


We hope it’s fine that we take a moment to boast. Because to be honest, we think what we have to offer is pretty great: Our office is located in Wave by Skanska, with a pretty nice view over town. We have all the sodas and red bull you’ll need, and a Playstation too.

We take pride in our work, but we are also serious about fun. Seriously. We meet between the offices a few times per year for social events and team fun.

At Ageras Group, we are on a mission to conquer the world. But who said you can’t have fun along the way?


Now that we have caught your attention, it is time for you to catch ours. Please send us your English resume via the application system.

If you have any questions regarding the position, please feel free to contact our People and Culture specialist Lindis Lundahl on +45 21754084

About Ageras Group

At Ageras Group, we enable success for micro-businesses by building the best ecosystem around their financial needs. With a well-preserved start-up spirit, we are today an ambitious group of fintech-companies with nearly 300 employees operating across 12 markets in Europe and the US. As the home of Billy,, Tellow, Salary, Zervant, Ageras Marketplace and Ageras Finance, and being financially backed by Investcorp, Rabo Frontier and Lugard Road Capital, we are on a mission to revolutionize the financial industry and conquer the world - nothing less.

Your job will consist of

  • Help your team grow their skills and experience
  • Author project plans for epics
  • Run agile project management processes
  • Conduct code reviews, and make technical contributions to product architecture as well as getting involved in solving bugs and delivering small features
  • Bring new ideas and innovative tools and techniques to the table
  • Collaborate with Product Managers in order to create an ambitious and exciting proposition
  • Maintain both short and long-term technical strategy for the division
  • Be a key team member in our newest team where you will be part of an elite group who will be able to bring fresh ideas to the table
  • Pioneer our new elite banking division and make history at Ageras Group!

About Ageras

About Ageras

At Ageras Group, we enabling success for small businesses by building the best ecosystem around their financial needs. With a well-preserved start-up spirit, we are today an ambitious group of fintech-companies with around 350 employees operating across 12 markets in Europe and the US.

As the home of Kontist, Billy, Meneto, Tellow, Salary, Zervant, and Ageras Marketplace, and being financially backed by Investcorp, Rabo Frontier and Lugard Road Capital, we are on a mission to revolutionize the financial industry.

The group is a built on a passion for entrepreneurship. Serial entrepreneurs Rico Andersen and Martin Hegelund founded Ageras in 2012 and has since turned their vision into a global venture with a strong offering.

Ageras Group is the home of Billy, Tellow and Ageras Marketplace. Each brand has a unique offering enabling success for small and micro-businesses, we are currently active in Denmark, Sweden, Norway, the Netherlands, Germany and United States.

Working benefits

At Ageras Group, we take fun seriously, because motivated Agerians equal happy clients and partners. We go the extra mile to ensure that our employees come motivated and happy to work and thrive in our dynamic, international work environment.

Office Snacks

Still hungry after enjoying the best lunch in town? Don’t worry, we offer snacks, sodas, coffee, tea, etc. to keep your energy up.

Growth Opportunities

Explore our career opportunities and grow your professional skills across our various products and international offices.

Social Gatherings

Get to know your colleagues by joining our weekly Friday bars, Board game nights, company parties, sport competitions and other social events.

Central & Modern Offices

Modern offices with all facilities to make work fun, from gaming room, great meeting facilities to lounge areas. Located centrally to ensure easy commute to work.

Scale-up environment

Join our passionate and entrepreneurial teams and be able to contribute with your ideas and skills to our exciting growth journey.

Are you interested? Apply now

What our

I’ve had the pleasure to be part of Ageras for most of its journey – and what a journey!
Ageras is not a company maintaining the status quo, it is a living organism – always adapting, always moving, always growing. The mindset of “just because something works, does not mean that it cannot be improved” is something incredibly valuable.

Zuzana Repova
Head of Product Marketing

Getting to do this with the all Micro Heroes in Ageras is what makes the journey so exciting!
After being a part of Ageras for almost a year, I have come to learn and enjoy the high paced work-environment that characterizes the company. Together with my skilled colleagues, we aim to be the best at helping both microbusinesses and our partners grow their businesses, by finding the perfect match for both parties.

Andreas Selset
Head of Client Consulting

An adventure which develops, improves, and gives me a lot of learning which brings excitement, energy and smiles to me and my colleagues every day. The sum of all that is what gives me the passion to give our customers the best start and onboarding in Meneto.

Nikolaj Kjøller-Hansen
Onboarding Manager at Meneto
Working at
Ageras Group

Together we believe we can achieve great success and we are on a mission to conquer the world.

Instagram Ageras

Frequently asked

Who can I turn to if I have questions throughout the recruitment process?

You are always welcome to reach out to HR and Talent Acquisition if you have any questions about our recruitment process, an open position or more generally about working at Ageras Group.Phone number: 31791715

What do Ageras Group look for in a potential candidate?

At Ageras Group, we don’t have our mind set on an “ideal” candidate. Instead, we aim for diversity in all aspects, and are proud to be represented by employees with all possible professional and academic backgrounds and with 19 different nationalities. However, what we all do have in common (and what we also would like to see in our next employee) is that we thrive in an everchanging environment and always strive to do better.

What does your recruitment process look like?

A recruitment process at Ageras Group will most often look something like this:
Quick telephone screening – 1st interview – Assessment – 2nd interview - Hire
Read more about the 1st and 2nd interview below.

How should I prepare for a 1st interview?

If you are invited in for a 1st round interview, it’s because you have made a great first impression! Now we just want to get to know you better, and equally important - give you a chance to get to know us. The best advice we can give you is to be yourself. We will probably come well around your CV, but we would also like to know who you are when you are not at work. Maybe you have some cool hobbies, a totally unrealistic dream in life or an impressive party trick? Also, remember that we are here to answer all your questions as well. So fire away!

How should I prepare for a 2nd interview (/test-feedback)?

By now, we have must likely spoken a couple of times and hopefully feel that we know each other relatively well. For this 2nd interview, however, we will use the assessment you have done as a basis for dialogue about your approach to work and your professional behavior and mindset. Our goal is to come around your preferences, development areas and strengths so that your potential new manager will know how to create the best possible conditions for you and your employment.
In other words, we don’t expect much preparation from your side, expect for a bit of reflection about the above.

How should I dress for an interview at Ageras Group?

Dress as you! At Ageras Group, we don’t really have a dress code. Some like sneakers and hoodies, while others are more comfortable in a crisp shirt and polished shoes. Wear what you feel comfortable and confident in – so will we.

Can I apply for more than one job?

Sure thing! If there’s more than one job you could see yourself in, then that’s great! Just remember to express why this exact position is (also) the right match for you.

When can I expect to hear back from you after I have applied for a job?

We respect the time you have put into applying for one of our jobs, and do our best to get back to you as soon as we possibly can. Sometimes we manage get back to you within a couple of days, other times after a couple of weeks. However, you can always trust that we will get back to you within a maximum of four weeks.

Regardless if we see you as a good fit or not as the best fit this exact time around, you will ALWAYS hear back from us.

How long are vacancies open for applications?

We rarely operate with application deadlines. Instead, we keep each position open until we have found the very one. However, as a rule of thumb, you can expect a vacancy to be open for at least a couple of weeks.

What if I’m currently not based in the location for the job I’m interested in?

Awesome! We welcome applicants from all countries with a working permit in the country where the job is localized. Currently, we are proud to be represented by 19 different nationalities, and would love for the number to be even higher!

If you are invited to a physical interview in another country than you are currently residing in, we will of course reimburse all costs related to travelling.

In terms of relocating, we are not able to offer any relocation package, but will be happy to put our expertise at your disposal and help as much as we can.