Sulka Haro
Chief Product Officer at Nightscout Project
Helsinki, Finland
Summary
🤩
Rockstar
Top expert inSmart Home Automation and IoT Development
Sulka Haro is a veteran game designer, entrepreneur and full-stack engineer who has spent 25 years building digital experiences and leading product for cloud-native multiplayer games. As Co-Founder and Chief Product Officer at Mainframe Industries and former Executive Producer/Lead Designer on hit mobile titles like The Walking Dead: No Man’s Land, he blends creative design leadership with hands-on engineering. He founded MakieLab—one of the first companies to ship CE-certified 3D‑printed toys—and has deep expertise in virtual economies and real‑time multiplayer systems. An active open-source contributor to diabetes tooling (OpenAPS/oref0) and xDrip, he applies the same rigorous, test-driven approach to safety-critical health software as to games. Based in Helsinki, he’s a frequent GDC speaker and hobbyist developer of real‑time diabetes management systems, reflecting a career that spans product, code and community.
11 years of coding experience
8 years of employment as a software developer
Stackoverflow
13reputation
870reached
0answers
1question
Github Skills (18)
javascript10
mobile-development10
apidoc10
testing10
java10
javas10
api10
android10
opensap10
algorithm9
unit-testing9
code-optimization9
algorithms9
webservice9
optimisation9
Programming languages (14)
Github contributions (5)
openaps/oref0
May 2016 - Dec 2019
oref0: The open reference implementation of the OpenAPS reference design.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:64 commits, 35 PRs, 19 pushes in 3 years 8 months
Contributions summary:Sulka primarily contributed to the `oref0` project by debugging and enhancing the calculation of IOB (insulin on board) by modifying core logic for temp basal treatments, and basal profiles. Their work includes splitting temp basals based on profile changes and optimizing the IOB calculation to improve accuracy. The user also addressed several issues related to the calculation of IOB using specific curves and improved the test suite coverage for those calculations. Furthermore, they contributed to the support of loading ISF and BG targets in mmol/L and fixed a test that failed around midnight.
openapsopenapi3oref0openapireference-implementation
jamorham/xDrip-plus
May 2018 - Jun 2019
Enhanced personal research version of the xDrip android app
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:5 commits, 1 PR in 1 year 1 month
Contributions summary:Sulka primarily contributed to the `XdripWebService.java` file, implementing features related to web API access and security, including adding secret management to the API and binding it to all IPs. The user also made updates across several files, including `LibreAlarmReceiver.java` and files under the wear folder, and modified `SensorSanity.java`, suggesting work on sensor data handling and display logic. These modifications indicate that the user is working with sensor data coming from different sources and with different devices, like the wear one.
android-appxdripandroid
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