About Me
Who I Am
I am Anssi Siren. I'm a Senior Full Stack Developer with close to two decades of experience in web development consultancy. Originally from Finland, I currently reside both in Finland and Estonia.
Over the years I have worked with a wide range of clients - from highly regulated organizations like the Finnish Tax Administration to major corporations such as Nestlé and KONE, as well as various startups including my own, Mapifest.
What I Do
I build fully responsive modern web applications, horizontally scalable backend solutions, APIs and everything in between. I have experience in server-side-rendered frontends, Progressive Web Applications, multimedia platforms and complex integrations. I have successfully implemented self-hosted services, cloud-powered architecture and Infrastructure as Code.
My approach emphasizes rapid prototyping while maximizing compatibility by adhering to conventions and standards. I write tested, maintainable code that ensures the output remains future-proof and easy for other developers to work with. Robustness, measurability and performance are always taken into account in my work, why not take a look at the performance report of this site?
My core technologies
I excel at TypeScript, Next.js, AWS-CDK, React, Node.js
Do not take on project requiring Java, PHP or C# - my expertise is elsewhere and I prefer to stick to what I do best.
Frequently Asked Questions
Do you take on remote projects?
Yes. I, like many others have been working remotely during the epidemic and have developed effective communication and collaboration practices that ensure project success regardless of location.
Do you offer ongoing maintenance and support?
Yes. This includes bug fixes, security updates, performance optimization, and feature enhancements. We can discuss the best support arrangement for your needs.
Can you work with my existing team?
I have experience working with development teams of various skillsets and backgrounds. Whether you need an extra pair of hands for a specific sprint or long-term augmentation, do not hesitate to contact me.
Do you track visitors on this site?
This site uses privacy-friendly analytics that do not use cookies or collect personal data. I only see aggregate page view counts to understand which content is useful. This approach is fully GDPR-compliant, which is why you do not see a cookie consent banner.