Gökdeniz Gülmez works on machine-learning engineering and MLOps at Computacenter and contributes to open-source AI software for Apple Silicon. His projects include an MLX knowledge benchmark and the compact JOSIE model family.[1][5][6]
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Education
Links
Owned current professional biographySystem Engineer, ML engineering and MLOps · Computacenter
Freelance engineer, MLX-VLM core trainer · Neywa Labs
Career
At Computacenter, Gülmez focuses on deployment, monitoring and maintenance of machine-learning systems. His independent work contributes model architectures and training methods to MLX libraries. Neywa Labs sponsors his freelance maintenance of MLX-VLM’s core trainer. His professional background also includes vocational training in IT systems integration and studies at IT.Schule Stuttgart.[1][4]
Contributions
Test whether a model understands the MLX framework
MLX Benchmark evaluates language models on questions, coding and debugging tasks about MLX. A command-line runner selects a model and provider, filters tasks by category and difficulty, and stores results for tables and charts. Its judge model can be configured separately from the candidate; the default uses the candidate model itself. The resulting scores therefore need to be interpreted with the task set, grading setup and sample outputs in view.[5]
Study what post-training changes in a small model
His JOSIE-2 report describes carefully selected post-training data for compact language models, including reasoning examples and instruction-following behavior. It compares reasoning and non-reasoning modes and discusses changes that transfer beyond the explicit format of a reasoning trace. In matched-prompt tests, he also reports longer reasoning traces after quantization, leaving the cause unresolved. The release treats model behavior and evaluation as part of a local-first development process.[6]
Tools, writing & talks
Tools
Start here
MLX Benchmark
github.comA configurable harness for evaluating LLM knowledge and coding ability around the MLX framework.
Inspect the bundled tasks and a few graded answers before comparing scores. Python and a configured local model or provider credentials are needed; configure a separate judge if you want to examine self-grading effects.
Creator and maintainer[5]Original source
Writing, research & talks
- JOSIE-2: Small Language Models Trained for Reasoning, Honesty, and Independent Judgmenthuggingface.co
An authored technical report on curated post-training, behavior and quantization in compact models.
Author and model developer[6]