Pelle Wessman
Senior Web Developer at 040
Malmo, Sweden
Summary
🤩
Rockstar🎓
Top SchoolPelle Wessman is a Senior Web Developer and tech lead based in Malmö with 17 years of hands-on experience building full-stack web systems, APIs, and scalable services. He’s a Node.js veteran (using it since 0.1.x) who prefers pragmatic JavaScript with JSDoc types, SQL databases like PostgreSQL, and selective use of technologies such as Redis, Neo4j and GraphQL when they add real value. Pelle combines front-end and back-end expertise without relying on frameworks he dislikes—he openly avoids React and transpilation while championing linting and robust type safety. An active open-source maintainer, he’s contributed type and developer-experience improvements to the popular Fastify framework and strengthened Mocha’s test coverage. He runs his own consultancy, leads projects end-to-end, and has a long-standing interest in the IndieWeb and practical, open web standards.
17 years of coding experience
15 years of employment as a software developer
Industrial and Organizational Psychology, Philosophy, Industrial and Organizational Psychology, Philosophy at Lund UniversityHigh School, Social Sciences, High School, Social Sciences at BergagymnasietHigh School, Natural Sciences, High School, Natural Sciences at Komvux
German, Arabic, Swedish, English
Stackoverflow
2,747reputation
362kreached
42answers
1question
yarnpkg
top-5%
Github Skills (26)
javascript10
testing10
typescript10
type-definition10
mochajs10
typescript-types10
web-framework10
nodejs10
typescripts10
test-automation10
test-framework9
mstest9
teste9
bdd9
yarnpkg9
Programming languages (29)
Github contributions (5)
mochajs/mocha
Jul 2016 - Apr 2025
☕️ simple, flexible, fun javascript test framework for node.js & the browser
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:1 release, 89 reviews, 47 PRs in 8 years 9 months
Contributions summary:Pelle contributed to the Mocha test suite by adding, modifying, and correcting tests. They implemented tests to verify the correct behavior of error handling related to cause stacks, including edge cases for circular references and missing messages. The commits demonstrate proficiency in utilizing Mocha's testing framework and adjusting test configurations, and integrating XUnit reporter. The changes aimed at improving the reliability and coverage of Mocha's testing infrastructure.
test-automationbrowsernode-jstestingjavascript
fastify/fastify
Oct 2020 - Nov 2020
Fast and low overhead web framework, for Node.js
Role in this project:Back-end Developer & Type System Specialist
Back-end Developer & Type System SpecialistContributions:14 reviews, 2 commits, 7 PRs in 27 days
Contributions summary:Pelle primarily focused on improving the type safety and developer experience within the Fastify framework. Their contributions include fixing type definitions for routing options, enhancing the `decorate` methods to enforce type checking, and improving type support for decorators. Additionally, the user streamlined the project's ESLint configuration for better code quality and consistency. These changes contribute to the robustness and maintainability of the Fastify framework.
apihapispeednode-jsjavascript
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.