Siili One is a community of technology visionaries and developers, combining top-level software development, data, and artificial intelligence expertise. At the heart of our operations is the ability to match the right talents with the right clients, enabling smooth and efficient collaboration across various industries. Our broad project portfolio spans multiple sectors, including public services, finance and banking, industry, technology, and the service sector. 

Our positions

Software Architect
Build the software architectures of the future

As a Software Architect at Siili One, you'll work on large-scale and business-critical system solutions across various industries. You’ll design scalable and sustainable architectures and guide development teams toward technically excellent outcomes.

What we expect from you:
– Solid experience in software architecture and cloud platforms (AWS, Azure, GCP)
– Ability to build scalable and high-performance systems
– Strong collaboration skills with both development teams and clients
– Experience with DevOps practices and CI/CD pipelines

Lead Developer
Guide your team and turn your innovation into impact

As a Lead Developer at Siili One, you're the go-to person in the team — someone who brings great practices and fresh ideas into real-life solutions. You ensure code quality, promote the best technical approaches, and grow both yourself and those around you.

What we expect from you:
– Experience in full-stack development (with multiple technologies)
– Familiarity with cloud platforms (Azure, AWS, GCP)
– Ability to mentor and provide technical leadership to a team
– Skills in using AI tools in development (Cursor, JetBrains AI, TabNine)
– Strong communication skills and willingness to work closely with clients

Why Choose Siili One?

You're an experienced software consultant – you build solutions and truly understand the client. Siili One is made for professionals like you: senior-level experts who value meaningful work, collaboration, and professional freedom.

Our consultants stay with us twice as long as the industry average. Over a hundred experienced colleagues have already found their place here – maybe you're next?

What you get with us:

— A top-tier team of like-minded professionals and a culture of respect
— A fair compensation model – based on billing, with a built-in safety net
— The ability to influence your client work and our working culture
— Freedom with responsibility: independence to do your work, with support when needed
— Hands-on AI expertise and opportunities to grow in it
— Balance between remote and onsite work: modern spaces, communities, and activities when you want them

Read more: siilione.com/job-seekers
Frequently asked questions: siilione.com/job-seekers#faq

Employment Begins with a Hello
We value genuine connections. Our smooth and friendly recruitment process ensures that Siili One is the right next step for you.

Let’s get to know each other: A relaxed conversation to ensure expectations match.

Deep dive into your skills: Meet our experts and learn more about the role, projects and life at Siili One.

Agreeing on the next steps: We move forward once we find a client project for you – welcome to Siili One! ★

Among our professionals are experts primarily based in the Helsinki region, with diverse industry backgrounds and proficiency in both Finnish and English.

Welcome to the endgame of consulting – in the best possible way.