Jens-Mikael Stjernberg

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Hi, I'm <Jens-Mikael Stjernberg />

<> I'm software engineer who specializes in building the web. I'm looking forward to develop my skills in the field and contributing to meaningful projects. </>

TypeScript Programming Language
JavaScript Programming Language
Python Programming Language
Go Programming Language
React JavaScript Library
Next.js Framework
Tailwind CSS Framework
Node.js Runtime
Express.js Framework
NestJS Framework
GraphQL Query Language
Matrix SDK
PostgreSQL Database
MongoDB Database
Drizzle ORM
NextAuth Authentication
Firebase Platform
Amazon Web Services
Google Cloud Platform
Cloudflare Services
Docker Containerization
Git Version Control
My Projects
Checkout My Portfolio

My Projects

Eskimo Village

A self-help learning portal website with blog lessons, video lectures and a respectful, encouraging and strongly connected community.

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Nextjs
Tailwind
Cloudflare
Shadcn
REST API
View Site

Roof History

A production level website for a roof assessment start-up where I was responsible for creating the backend functionality e.g. auth and numerous CRUD features

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Nextjs
Tailwind
NextAuth
PostgreSQL
Drizzle ORM
Resend
Edgestore
Google Maps API

Hansatori Pharmacy

A website for a pharmacy located in Turku, Finland, where visitors can browse current stock and information about specific products.

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Nextjs
Tailwind
i18n
PostgreSQL
Drizzle ORM
Resend
Google Maps API

Portfolio

A personal portfolio I built to showcase my work. Here I include all of my best projects together with the techstack I used.

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Nextjs
Tailwind
Source Code

Workout Tracker

A workout tracking website that enables users to plan their workouts, track them, view their statistics and progress and browse on a calender previous workouts.

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Nextjs
Tailwind
NextAuth
PostgreSQL
Drizzle ORM
Source Code

Language Master

A fullstack app built to create, update, delete, read and search for flashcards that you or someone else has made to practise languages .

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Nextjs
Tailwind
Firebase
Vercel
MiniSearch
Source Code View Site

Youtube Clone

A clone of Youtube's frontpage built to showcase my skills in building pixelperfect replications from designs or existing websites.

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Nextjs
Tailwind
Source Code

Tesla Clone

A simple one day project of Tesla's frontpage to showcase my skills in pixelperfect replications from designs.

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Nextjs
Tailwind
Source Code
Testimonials

What Others Say

Testimonials
I recently hired Jens to develop the backend for my website and couldn't be more pleased with the robust, efficient, and scalable results. Jens maintained seamless communication, provided valuable insights, and I highly recommend their high-quality backend development services.
@ Dan Sveen

CEO and Founder of Roof History

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Working with Jens was a fantastic experience—they were detail-oriented, proactive in solving challenges, and ensured smooth communication throughout. Their dedication and commitment made the entire project seamless and enjoyable.
@ Hannu Valve

CEO of Hexer Network

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An exceptional freelancer! Jens is extremely skilled and quick at coding, with a remarkable ability to learn and adapt. He consistently provides valuable suggestions that have greatly benefited our projects. Jens has a solid understanding of modern standards and works seamlessly within them. His cheerful, proactive, and clever approach makes collaboration effortless and enjoyable. Highly recommended!
@ Harri Vaelilae

CEO of OnePointCode

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Who am I
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About me

Jens-Mikael Stjernberg

<> I'm 17 years old and speak English, Swedish, Finnish, and Norwegian fluently, and German. I have been programming for around 4 years now. I initially began with game development using Pygame in Python but afterwards, I gravitated more towards web development and have been passionate ever since about building beautiful web applications with TypeScript and Tailwind in Nextjs.

Recently, however I have been focusing more on the architecture of web apps and striving to enhance the performance between the client and backend in the most secure way. I've began looking more into the business aspect of web apps and how to make them more profitable and user friendly. My ultimate goal is to make the most out of my skills and knowledge to create a successful business and bring the ideas into reality. When I discover a problem or a lack of knowledge, I always thrive to learn more about it and solve it with the best possible solution.

Outisde tech, I mostly spend my free time learning new things and creating music. I also highly value health, so when I'm not in front of the computer or with my guitar, I go to the gym and train until I can't lift my arms anymore. Either way, I love learning and having fun solving problems, which is why I believe I could be a great developer for your business. </>
My Journey

My CV Resume

Education

High School - BJSS

Currently in my second year in Pori's Swedish high school studying Mathematics and Physics.

2023 - Now

Primary School - BJSS

Finished primary school with a 9.8 certificate. (10 max)

2014 - 2023

Experience

Frontend Developer - OnePointCode

I've have been the lead frontend developer for OnePointCode for a year now and have been responsible for the frontend of the website with contributions to the backend as well.

2024 - Now

Lead Software Engineer - Hansatorin Apteekki

I built a whole website for a pharmacy located in Turku, with the goal of increasing sales and providing a better user experience for the customers.

2024 - 2025

Lead Backend Developer - Roof History

I desgined and developed the whole backend for a complex roof assessment start-up.

2024 - 2024

My Services

Services I Offer to my Clients

MyServices

Web Development

Frontend Development

I can provide the frontend for your application, regardless of the prerequisites. I have a couple of years of experience in the field and can create clean, high-performance code, whether you have a design or sketch already or need one created from scratch. My main goal on the client side is to deliver a unique UI and UX that enhances your application's value and delights your customers.

Web Development

Backend Development

I am fluent in creating and developing the backend and functionality of a web application using Firebase and DrizzleORM in a Next.js environment. I am also capable of building and working with REST APIs. With these tools, I can provide a robust database and authentication system, including OAuth providers like Google and Facebook or traditional email and password authentication.

Web Development

Design Replication

Thanks to my experience with website cloning, I'm fluent in creating and developing a web application from any design or source. I'm not primarily a website designer, but with a bit of direction, an idea, or a sketch, I can bring any vision to life for your business's website.

Contact Me

Get in touch

Available for Freelance Opportunities

<> I am open to any sort of freelance job offers. Since I am still in high school, my free time is limited, so I only accept freelancing opportunities where I can grow and provide quality work.

Do you have an exciting project you need help with? Send me an email or contact me via WhatsApp! I'd be happy to hear from you! </>