Kjell Winblad - AI Engineer at Rillion

Kjell Winblad

AI Engineer at Rillion

Stockholm, Sweden

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Summary

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Rockstar

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Top School

Kjell Winblad is an AI engineer and seasoned software architect with 16 years of experience spanning low-level systems, concurrent data structures, and full-stack web development. He holds a PhD focused on synchronization primitives and multicore optimizations and has applied that expertise to high-impact work on the Erlang VM (BEAM) and scalable ETS data structures. Comfortable across Scala, Python, Java, Erlang, Go and JavaScript, he blends deep performance tuning (NIFs, C, ARM/Zephyr) with high-level system design and production-ready services. His open-source contributions include improvements to the widely used EMQX MQTT broker and testing work in the Akka project, demonstrating practical concurrency and reliability skills. A founder who’s shipped user-facing platforms with multilingual and multi-node deployment features, he pairs academic rigor with a pragmatic drive to understand and optimize how systems behave under load.

15 years of coding experience

17 years of employment as a software developer

Slottegymnasiet

Batchelor Computer Science, Batchelor Computer Science at Umeå University

Doctor of Philosophy - PhD Computer Science, Doctor of Philosophy - PhD Computer Science at Uppsala University

Swedish, English

Stackoverflow

Stats

1reputation

0reached

1answer

0questions

Github Skills (25)

akka10

rule-engine10

scala10

scalatest10

sql10

engine10

actor-model10

concurrency10

databases9

data-integration9

protobuffer9

protobuf9

sql-database9

c178

distributed-systems8

Programming languages (15)

JavaCScalaMakefileVueGoHTMLErlang

Github contributions (5)

emqx/emqx

Mar 2022 - Jan 2023

The most scalable open-source MQTT broker for IoT, IIoT, and connected vehicles

Role in this project:

Backend Developer

Contributions:344 reviews, 39 commits, 214 PRs in 10 months

Contributions summary:Kjell primarily worked on the rule engine, contributing new functionality by adding functions for Sparkplug B, date formatting and unescaping, as well as improving the database interaction. They implemented a configuration option for changing the jq implementation and added support for HTTP actions, incorporating features like stop-after-render. The user also made improvements to the codebase by renaming and consolidating code.

mqtt-servertelecomconnectedlwm2mmqtt-broker

akka/akka

Oct 2011 - Nov 2011

A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

Role in this project:

Back-end Developer & Test Automation Engineer

Contributions:12 commits in 1 month

Contributions summary:Kjell primarily contributed to the testing of the `akka/akka` project, specifically focusing on the `akka.util.Index` class. Their work involved writing and improving unit tests to ensure the correctness and robustness of the `Index` data structure, covering scenarios like value retrieval, removal, and parallel access. The commits also demonstrate a good understanding of concurrency aspects within the Akka framework. The user's contributions help ensure the reliable functionality of a core utility within the Akka platform.

resilientactor-modelreactiveconcurrentdistributed-actors

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