About Tuukka Merilainen

I am a man on a mission to make the world a better place starting from software. My passion is to design and develop software that feels natural to use and is loved by its users without compromising security. I am based in Finland, but I have a strong background in international projects.

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Hire a Software Development Professional!

Does your business need a new app or are you having problems with existing software or information security? How about your current development team, does it need more manpower? What is the status of your software products, are the KPIs below target?

If you answered yes to any of these questions, let me help you!

Check out my previous work from my portfolio

Recent Updates:

Portfolio From Software Engineer to Product Manager – Learning New Skills in the Cyber Security Industry

Tuukka Merilainen Product Manager Deltagon

I joined Deltagon Group almost four years ago. The first two years I worked 100% of my time as a developer. Then my position started to drift towards the business side and I got promoted to …

Portfolio Speaker at Critical Communications World 2018 in Berlin – Criteria for Mission-Critical Applications


I was truly honored to be one of the panelists discussing a very interesting topic: “Criteria for Mission-Critical Applications”. The panel was hosted by Airbus Marketing Director Tapio Makinen.

Portfolio Developing the Travel Blog – traveljael.com


A couple of months ago I got an inquiry for developing a travel blog for my existing client Jael. This time she wanted to build up a new site which would focus on travel blogging and integrates with social media.

Portfolio API design and development

API developer featured image

As a developer in Deltagon I designed and developed REST APIs. All those cases were slightly different but shared one thing.