Senior Software Developer (m/w/d) for Payment Terminals

Handling billions of transactions annually, our Client is among the top payment processors in Europe. We keep a tight focus on making it even easier and more intuitive for our customers to handle digital payments and related services. This has made us a trusted partner to more than 700,000 merchant outlets, including 140,000 online merchant outlets, more than 260,000 enterprises and over 250 banks across Europe.

Changing the future of payments takes strong personalities

You’ll develop in a fast-growing tech company in a high-paced, high-impact market. Working to change the future of payments, it’s not just skills and ambition that gets the job done, it’s the full package that makes the difference. Together, we impact the lives of everyone around us by powering an easier tomorrow for every citizen, bank, business and colleague. What powers you at work?

You’ll be powering our Payment Terminal Application team

You will be in a team which implements software for the physical payment terminals. These devices are the same ones which can seen all around us in shops, hotels, restaurants, everywhere. The existing codebase is a combination of different technologies, but you will be focusing on the part implemented in Lua language. This piece of code is responsible for the business logic and integration interfaces towards other systems outside of the terminal.

Your team will partly be located in Finland.

Daily tasks:

• Develop payment application features according to the backlog using LUA or C.
• Debugging issues and fixing them.
• Participate in maintaining internal backlog for payment application.
• Participate in taking care that technical debt does not increase too much.
• Participate in releasing and rolling-out payment application.

Skills and ambition make you succeed

We expect you to have a strong passion for coding, which eases your learning of Lua. You should also be outspoken and active in sharing your views when improvements or changes are needed. You always optimize your code while keeping the highest possible security and quality in mind. Lastly, you understand the concept of product development where the maintenance of the software is only as smooth as the code you’ve written earlier.

• Fluent in German and English
• Outstanding coding skills. E.g. JavaScript or Python experience would be good basis to learn Lua.
• Embedded development experience. Understanding how hardware limitations (e.g. RAM) impact the code.
• Programming experience with different communication protocols (e.g. USB, Serial, TCP/IP).
• Payment and EMV knowledge is appreciated but not mandatory.
• Linux knowledge is beneficial as majority of the development tools run on Linux.
• You also have a valid working visa for EU country.

Apply now to power your career

If you love to code, you will enjoy working with us

We want to create the best product in the payment industry, and make it happen by building the best software team. So we offer you an opportunity to be surrounded by experienced software developers, with a great view over the payment industry. You can influence team’s ways of working, tools, technologies and architecture. You’ll find the freedom to balance an exciting job with life outside of work. We enjoy working here.