DonTomasso

About

Tomas Tunström

Senior tech lead and full-stack developer with a frontend focus. 19 years in the industry, based in Sweden.

Profile

Consultant with long experience in product development, design-focused frontend, agent-based development with AI, performance optimization, SEO, accessibility, and sustainable architecture across complex web platforms.

I combine technical leadership with hands-on development in React, Next.js, TypeScript, and modern frontend platforms. I have led teams, established design systems, and reduced technical debt. Today I work agent-first and set up complete development processes with AI, from planning and implementation to review, testing, and delivery, with performance, SEO, and accessibility built into the whole.

As a person I am curious, driven, and enjoy constantly developing myself, both professionally and personally. I thrive when I get to take responsibility, think ahead, and find smarter ways to solve problems. In my spare time I invest a lot in fitness, particularly running and strength training, where I enjoy setting goals and working toward them in a structured way. Balance matters to me, and I value time with family and friends just as much as diving deep into technology or new ideas.

Competencies

  • React and Next.js in production

    Builds and evolves modern web applications with React, Next.js, SSR, application architecture, and a focus on reliable delivery.

  • TypeScript and frontend architecture

    Experienced in creating structure in larger codebases through sustainable component architecture, technical debt reduction, and clear boundaries between system parts.

  • Design systems and component libraries

    Takes UX design from Figma into scalable component libraries with documentation, consistency, and reuse as core goals.

  • Microfrontends, monorepos, and platform work

    Has introduced monorepo structures, microfrontend solutions, and workflows that make larger frontend platforms easier to develop and maintain.

  • Accessibility and usability

    Works hands-on with WCAG, semantics, understandable data visualization, and solutions that work for more users in practice.

  • Advanced performance optimization

    Strong in advanced web performance optimization, with a focus on Core Web Vitals, rendering strategies, load times, and identifying bottlenecks in complex applications.

  • SEO optimization

    Works actively with technical SEO, information architecture, metadata, semantics, and implementations that improve visibility, indexation, and organic reach.

  • Agent-based development and AI-driven workflows

    Works agent-first and sets up complete development processes with AI: instructions, tooling, and workflows where AI agents plan, implement, review, and test with high quality. Delivers faster without compromising code quality, and uses AI within the solutions themselves when it creates clear business and user value.

  • Native iOS and Apple Watch development

    Builds native apps for iPhone and Apple Watch with Swift and SwiftUI, including WidgetKit widgets and watchOS complications. Took the Spotpriser app all the way to the App Store.

  • CI/CD, headless CMS, and modern delivery workflows

    Experienced with Azure DevOps, CI/CD, headless CMS, GraphQL, and modern content-driven web platforms.

Tech

React
8+ years
Next.js
5+ years
TypeScript
7+ years
Performance optimization
5+ years
Web Components
5+ years
Headless CMS
2+ years
Design systems
5+ years
Component libraries
5+ years
Microfrontends
5+ years
Accessibility
7+ years
GraphQL
2+ years
Nuxt.js
2+ years

Native iOS and Apple Watch

  • Swift
  • SwiftUI
  • WidgetKit
  • watchOS

Used to build the Spotpriser app (opens in new tab) for iPhone and Apple Watch, with widgets and a watch complication.

Contact