Kimmo Brunfeldt - Software Engineer at Swarmia

Kimmo Brunfeldt

Software Engineer at Swarmia

Helsinki, Finland

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Summary

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Rockstar

🎓

Top School

Kimmo Brunfeldt is a Helsinki-based software engineer with 14 years of experience blending product-minded engineering, design sensitivity, and hands-on open-source work. He co-founded Alvar Carto and has driven both technical architecture and go-to-market efforts, building customer-facing frontends, backend systems and automation for scaling to international markets. Currently at Swarmia after senior roles at Aiven and Futurice, he spans full-stack development, developer tooling and backend rendering services—authoring projects like a robust URL-to-PDF renderer and the widely used concurrently tool. Known for caring about tiny, well-crafted details, he pairs pragmatic business focus with a designer’s eye and active community contributions on GitHub.

14 years of coding experience

9 years of employment as a software developer

Information Technology, Information Technology at Tampere University of Technology

Finnish, English, Swedish

Stackoverflow

Stats

1,926reputation

381kreached

17answers

6questions

Badges

image-processing

top-5%

opencv

top-5%

Github Skills (35)

puppeteer10

javascript10

animation10

command-line-interface10

process-management10

chromeless10

headless-browser10

svg10

front-end-development10

command-line10

html10

pdf-generation10

nodejs10

concurrency10

cli10

Programming languages (16)

C#JavaC++CSSJinjaCGoHTML

Github contributions (5)

alvarcarto/url-to-pdf-api

Sep 2017 - Aug 2021

Web page PDF/PNG rendering done right. Self-hosted service for rendering receipts, invoices, or any content.

Role in this project:

Back-end Developer

Contributions:6 reviews, 120 commits, 65 PRs in 3 years 11 months

Contributions summary:Kimmo primarily focused on enhancing the functionality of the URL to PDF API. They implemented features such as adding support for HTML input, including support for rendering HTML content directly. They also addressed several bugs related to rendering, including fixing issues with Heroku deployment by disabling sandbox mode and optimizing the handling of images. Furthermore, the user added security measures, such as the implementation of API key authentication and restricting URL access.

invoiceherokupdfhostedpuppeteer

kimmobrunfeldt/progressbar.js

Sep 2014 - Aug 2021

Responsive and slick progress bars

Role in this project:

Front-end Developer

Contributions:10 releases, 504 commits, 35 PRs in 7 years

Contributions summary:Kimmo changed the project name and refactored the project's API. These changes appear to be focused on creating a library for creating progress bars using animated SVG paths. Additionally, the user added a square view and example paths for demonstration purposes. Furthermore, the user added a star path and favicon to the demo, improving the visual presentation of the project.

animationjavascriptbarsprogressbarslick

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