Johan Hellgren

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Summary

🤩

Rockstar

Johan Hellgren is a hands-on technology leader and owner of Concepta Solutions with eight years of focused experience modernizing cloud-native platforms, developer workflows, and applied AI solutions. He combines strategic architecture and team-building with active coding in Go, Python, C#, JavaScript/TypeScript and Rust, and has driven a department from zero to 50 Kubernetes-based systems in production. Johan has delivered production-grade RAG-based QA bots, on-premise dictation services meeting legal compliance, and bespoke internal tooling while also contributing backend improvements to the well-known RPCS3 PlayStation 3 emulator. His background spans public sector modernization, startups and consulting engagements across Europe and Africa, giving him a broad product-and-people perspective. Notably, he pairs platform leadership with low-level engineering—tuning emulator internals one week and fine-tuning open-source LLMs the next—to ensure solutions are both scalable and pragmatic.

8 years of coding experience

Github Skills (15)

assembly10

c-language10

psr-310

system-programming10

cprogramming-language10

device-emulation10

emulation10

assemble10

assembler10

reverse-engineering9

c119

c179

debugging9

opengl7

vulkan7

Programming languages (5)

C#JavaC++CJavaScript

Github contributions (5)

RPCS3/rpcs3

Jan 2018 - Jun 2022

PlayStation 3 emulator and debugger

Role in this project:

Back-end Developer

Contributions:10 reviews, 14 commits, 23 PRs in 4 years 5 months

Contributions summary:Johan primarily contributed to the back-end functionality of the PlayStation 3 emulator. Their work included stubbing out and partially implementing various functions related to the web browser, file system interaction, and memory management within the emulator's core modules. They also added and fixed functionality for handling save dialogs and rich presence integration with Discord. These changes suggest a focus on improving the emulator's compatibility and user experience.

playstationassembly-languagecppemulatorvulkan

isJuhn/rpcs3

Feb 2018 - Jun 2022

PS3 emulator/debugger

Contributions:59 commits, 202 pushes, 44 branches in 4 years 4 months

emulatoremulationdebuggerps3

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