10/09/2026 updated
HT
40 % partially available
Senior Full-Stack Developer, Frontend & UX focus
Pirkkala, Finland
Only remote
B.Sc., Computer Software TechnologyAbout me
Senior full-stack developer from Tampere, Finland with 15+ years of experience, focused on frontend, UX and design systems. I run Hetenho Software Consulting Oy and help clients build high-quality web apps with React, Vue, TypeScript, Node.js and AWS. Remote.
StorybookGitHub ActionsJava (Programming Language)User Experience (UX)Amazon Web ServicesCascading Style Sheets (CSS)User Interface DesignPostgreSQLNode.jsTypeScriptWeb Content Accessibility GuidelinesReact.jsVue.jsSyntactically Awesome Style Sheets (SASS)Playwright
Frontend & UX Development
Expertise in React, Vue, Ember, Angular, TypeScript, JavaScript, CSS/SCSS and modern CSS. Proficiency in design systems, Storybook, Figma, accessibility, UX and UI design for large-scale applications serving millions of users.
Backend & API Development
Strong background in Node.js, TypeScript, Java, Ruby on Rails, PHP and Python. Building REST and JSON APIs, middleware layers and microservices for critical domains such as payments, subscriptions and identification.
Cloud & DevOps
Hands-on experience with AWS services including Lambda, ECS, RDS, S3 and SES, as well as Docker, GitHub Actions CI/CD, Jenkins and Git for building and maintaining scalable cloud infrastructure and deployment pipelines.
Data & Databases
Working knowledge of PostgreSQL, MySQL, MongoDB, Oracle, Redis and SQL for data storage and management in enterprise-level applications.
Testing & Quality Assurance
Experience with Playwright, Jest, image-snapshot and visual-regression testing, automated testing, as well as OOP and functional programming principles to ensure high software quality.
Technology Consulting
Advisory services covering technology choices, stakeholder management, mentoring junior developers, user-flow redesign and product polish for international clients across the UK, Germany, Spain and Estonia.
CSS Architecture & Design Systems
Speaker on CSS architecture, naming methodologies, SCSS and modern CSS. Building and maintaining component libraries and design systems with Storybook and Figma.
Streaming & Subscription Platforms
Experience building streaming platform codebases serving both MTV Katsomo and TV4 Play with millions of unique users per week, including payments, subscriptions and user settings integrations.
Expertise in React, Vue, Ember, Angular, TypeScript, JavaScript, CSS/SCSS and modern CSS. Proficiency in design systems, Storybook, Figma, accessibility, UX and UI design for large-scale applications serving millions of users.
Backend & API Development
Strong background in Node.js, TypeScript, Java, Ruby on Rails, PHP and Python. Building REST and JSON APIs, middleware layers and microservices for critical domains such as payments, subscriptions and identification.
Cloud & DevOps
Hands-on experience with AWS services including Lambda, ECS, RDS, S3 and SES, as well as Docker, GitHub Actions CI/CD, Jenkins and Git for building and maintaining scalable cloud infrastructure and deployment pipelines.
Data & Databases
Working knowledge of PostgreSQL, MySQL, MongoDB, Oracle, Redis and SQL for data storage and management in enterprise-level applications.
Testing & Quality Assurance
Experience with Playwright, Jest, image-snapshot and visual-regression testing, automated testing, as well as OOP and functional programming principles to ensure high software quality.
Technology Consulting
Advisory services covering technology choices, stakeholder management, mentoring junior developers, user-flow redesign and product polish for international clients across the UK, Germany, Spain and Estonia.
CSS Architecture & Design Systems
Speaker on CSS architecture, naming methodologies, SCSS and modern CSS. Building and maintaining component libraries and design systems with Storybook and Figma.
Streaming & Subscription Platforms
Experience building streaming platform codebases serving both MTV Katsomo and TV4 Play with millions of unique users per week, including payments, subscriptions and user settings integrations.
Experience
Professional experience10+ years
Freelancer since2020
Languages
GermanBasic knowledgeFinnishNative speakerEnglishFluentSwedishBasic knowledge
Project history
Own consultancy delivering full-stack and frontend development, advising clients on technology choices, team communication, UX and product polish. Selected client engagements include Aithen (App UI & design system), 3 Step IT (Senior Fullstack Developer with Java, Vue, TypeScript, CSS and SQL), Visma Solutions Oy / Netvisor (Senior Frontend Developer building a React component library with TypeScript, Storybook and Figma, CI/CD pipeline with GitHub Actions and Docker), and Telia Oyj / MTV Katsomo (Senior Fullstack Developer building a streaming platform with AWS, middleware APIs serving millions of users).
Responsible for UI development in several data-driven projects for IKEA in a hybrid design and development role. Worked mainly on two projects and substantially improved their quality through tooling, automated testing and refactoring, including complete rewrites of selected functionality. Tech: React, Vue, TypeScript, Node.js.
Improved existing functionality and implemented a new UI for a customer portal web application based on a fresh design using React and TypeScript extensively. Created APIs and a PHP library to make web services easier for integrators to use. Tech: React, Node.js, TypeScript, AWS, Docker, PostgreSQL.