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C# API Implementation Engineer

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You prefer to code by example, rather than reading a thousand pages of specification. You enjoy technical puzzles and figuring out the underlying implementation of the systems you interact with. You might even have created elegant solutions for boring manual processes based on scraping.

To us personal finance is not about calculations and formulas but about lives being lived, emotions and money habits. The same goes for programming - it is not about the tools. We believe that the best results come from passion, dedication, intelligence - and natural curiosity.

We've been building a very successful personal finance platform, Spiir, for the last 7 years. Lately we have carved out some of the main technologies of Spiir and turned them into B2B solutions allowing companies to build innovative solutions on top of data from Nordic banks. We call this solution Nordic API Gateway.

Being digital is the core of our company. We have no silos. No business versus IT or marketing versus product. We work together to achieve our goals. You are going to be a central part of the company and pitching in with new ideas is a must. We help each other to strive for perfection. 

We want to grow our bank integrations team. They turn the results of reverse-engineering iOS & Android mobile apps into sustainable production grade APIs. We need you to supervise our code quality and put even more APIs into production on network traces delivered by our reverse engineers.

Through the Nordic API Gateway, the team created access for our customers to more than 350 banks. Before that launch, no public APIs were available in this industry. We successfully re-implemented more than a handful of industry-wide heavily hardened black box security frameworks along with numerous device binding solutions. We have extensive monitoring capabilities and we always strive to be a step ahead of any roadblocks.

What excites you

  • Being at the forefront of open banking
  • Building clever abstractions to unify wildly different systems
  • Enabling innovation by opening up access to financial data
  • Working in a state of the art microservices & Azure setup
  • Building high quality code that is impossible to break

We expect you to

  • Be an experienced C# / .NET developer
  • Be hard working and dedicated to the product and high-quality code
  • Have experience of integrating with different APIs
  • Have knowledge of cryptography in .NET and different serialization formats
  • Have real experience of delivering high quality and reliable software

Bonus points

  • Solid design & architecture skills
  • Intimate knowledge of HTTP, you might even have written your own HTTP stack
  • Linux and Python skills
  • Experience with reverse engineering
  • Experience with Azure and Service Fabric
  • Good knowledge of IT security

Impress us! Send your application, CV, LinkedIn, list of previous coding projects and preferably link to Github or other code repository to us. 

In case you have any questions, do not hesitate to contact our Team Lead for our Connections-team Christian Panton, cp@spiir.dk


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Wilders Pl. 15A
1403 København Directions stg@spiir.dk

Why Spiir?

At Spiir you’re not only a part of a vibrant workplace. As a part of our team, you’ll join a FinTech family who’s dedicated to help others managing their personal finance in a smart and simple way. 

or FunTech? There is plenty of space to innovate, laugh and have fun in our offices.

  • A strong team spirit

    Despite being a mixed bunch of talents with a wide range of skills and expertise, Spiir has an awesome team mentality. We love working in teams, being social and celebrate our successes together. 🎉🥂

  • A fast-moving FinTech

    Too early for champagne? Nope! 🍾 We currently have more than 280.000 Spiir users in Denmark and we’re just about to expand our services to the rest of the Nordics. We strive to reach 750.000 app users in 2019 and we aim to become the leading PSD2 infrastructure in Europe with Nordic API Gateway.

  • A low-key and relaxed workplace

    From passionate developers to digital strategists, there is room for everyone at Spiir. We’ve created an informal workplace where diversity, humor and endless high-fives are a natural part of the everyday office life.

  • Flexible working hours

    Morning person or not? We don’t care. At Spiir you’ll get the freedom to structure your working hours as you please.

    Who doesn’t like to work from home once in a while? 😎

Who are we?

We’re a dedicated, talented and energized team. We’re all passionate about Spiir, and it’s our core believe that personal finance should be less boring and more fun.

With the mission to create a strong PSD2 infrastructure platform, we’ve also launched Nordic API Gateway, which is set to make innovation easier for everyone. Nordic API Gateway helps fintech companies and start-ups create awesome services for both consumers and businesses.  

Already working at Spiir & Nordic API Gateway?

Let’s recruit together and find your next colleague.

  • Ahmed Magdy
  • Alex Langberg Jensen
  • Alex Voigt Hansen
  • Bjørn Eyde
  • Christian Dias Løgberg
  • Christian Panton
  • Christian Pihl Nielsen
  • Christian Victor Andersen
  • Christie Holm Kristensen
  • Dobrawa Radecka

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