Reliable, efficient, and scalable results. Highly recommended!
-Dan Sveen, Roof History
Trusted by:
What We Offer:
Frontend development
With traditional frontend development, we follow industry proven best practices to develop high performing web interfaces with UI/UX as our #1 priority.
Key features:
Responsive desgin
UI/UX implementation
Cross-Browser Compatibility
Performance Optimization
API integration
Version control & deployment
Tools:
React
Next.js
Typescript
Tailwind CSS
ShadCN
HTML5
CSS3
Javascript
Backend Development
We design robust and secure backend systems tailored to your business needs. Our solutions ensure performance, scalability, and data integrity, providing the backbone for your application to thrive.
Key features:
API Development
Database Design & Management
Authentication & Authorization
Payment Logic Implementation
Third-Party Integrations
Security Best Practices
Tools:
Node.js
Express.js
Nest.js
Drizzle ORM
Prisma
PostgreSQL
MongoDB
Pinecone
Cloudflare
REST APIs
GraphQL
Redis
Matrix-sdk-js
DevOps & Cloud
Our DevOps and cloud services help you build scalable, cloud-ready infrastructures. We optimize deployment pipelines and ensure your systems run smoothly, reliably, and securely at scale.
Key features:
Scalability & Performance Optimization
Deployment & Hosting
Monitoring & Logging
Continuous Integration
Deployment (CI/CD)
Cloud Infrastructure Planning
Tools:
AWS
Google Cloud
Vercel
Docker
CI/CD
Git
Why work with us?
+3 Years of Experience
We have over 3 years of experience in software development with continious passion for learning and solving new challenges
+5 Happy Clients
We have worked with several clients in the past, and many of them have been satisfied returned for with more projects.
Diverse expertise
Beyond the world of technology, we bring expertise in advanced AI solutions, business strategy, marketing, and exceptional communication across five languages.
+10 industry level projects
With over 10 industry-grade projects under our belt, we’ve built everything from simple business home pages to complex AI-powered solutions.
Our Success Stories:
Website optimization
Redesigned and improved a business' website making the UI more appealing and performant.
Results: Brought down running costs by 100% and increased traffic with enhanced SEO.
Architectural simplification
Refactored a previously flawed architecture in a real-time chat system by eliminating unnecessary dependencies and resolving performance bottlenecks.
Results: Decreased downtime by 99% and performance by 10x due to enhanced memory management.
Fullstack Web Development Excellence
Independently designed, developed, and delivered a fullstack website, ensuring quality through close client collaboration and effective communication.
Results: Delivered exactly what the client wanted, with no technical knowledge required on their part.
Client Feedback:
"Exceptional freelance services! Jens is a Very skilled and quick developer, with impressive learning and adaptability. They consistently offered valuable suggestions that benefited our projects. Strong understanding of modern standards and seamless collaboration. Their cheerful, proactive, and smart approach made working together easy and enjoyable. Highly recommended!"
Harri Vaelilae
OnePointCode
"I recently hired Jens to develop the backend of my website, and I couldn’t be happier with the strong, efficient, and scalable results. Communication was seamless, they provided valuable insights, and I highly recommend their high-quality backend services."
Dan Sveen
Roof History
"Working with Jens was a great experience – they were detail-oriented, proactive in solving challenges, and ensured smooth communication throughout. Their dedication made the whole project seamless and enjoyable."
Hannu Valve
Hexer Network
"Jens is a really competent developer. He‘s got a lot of experience in making beautiful websites or UIs. Communication was never a problem he always responded as quickly as possible (sometimes he‘s a bit busy). I will definitly come back for any to-be-established website projects. I can highly recommend."
Livio von Planta
EduCollect
Hey 👋
I'm Jens-Mikael Stjernberg, an 18-year-old young entrepreneur from Finland. I've been programming for four years already, and although I'm still in high school, I passionately build professional-level web projects. I founded Stjernberg Web and IT Services in fall 2024, when traditional summer jobs no longer inspired me and I wanted to take on new challenges as an entrepreneur in the world of software. Since then, I’ve completed numerous IT projects globally – not only in Finland, but also in the United States and Germany. Music and sports have always been important to me. When I’m not coding, I play the guitar or piano, or I hit the gym hard enough to make walking difficult the next day. I come from a multilingual entrepreneurial family from Norway. At home, we speak three languages: Finnish, Swedish, and Norwegian. In addition, I speak fluent English and have studied German in school for five years. So, if you're looking for passionate and multilingual IT help, don’t hesitate to get in touch – let’s make your vision a reality!
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Stjernberg Web and IT Services
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