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hydrangeas20/README.md

Hi, I'm Hamda 👋

I'm an empirical AI safety researcher and ML systems engineer. I build benchmarks and evaluation pipelines that test how robust, interpretable, and reliable language models actually are — fine-tuning attack resistance, mechanistic interpretability, scaling laws, and adversarial robustness — and I publish what I find, including the results that don't confirm my hypotheses.

I'm the founder of Plum AI Labs, where this research lives alongside two first-author publications. I also write about LLM evaluation and AI safety at Applied Alignment.

What I work on

  • Platform engineering & cloud infrastructure — building production-inspired developer platforms, distributed systems, cloud-native infrastructure, CI/CD, observability, and build orchestration with Go.
  • Fine-tuning attack resistance & safety evaluation — does alignment hold up under adversarial fine-tuning, and do our evaluations actually measure what we think they measure?
  • Mechanistic interpretability — logit lens, activation patching, sparse autoencoders on transformers built from scratch
  • Scaling laws & GPU systems — recovering empirical scaling relationships, benchmarking torch.compile and Triton kernels against eager PyTorch
  • Production ML systems — pipelines, monitoring, and infrastructure that actually ship

Featured work

Project What it does
Sandbox Agent Security-focused AI coding agent with policy-enforced tool execution, verified Docker isolation, bounded resource consumption, and adversarial testing. Validated with 415 tests and 8/8 scripted evaluations; real-model evaluation pending.
Relay Designed and implemented a reproducible AI inference engineering case study, investigating prefix caching, request routing, and latency optimization through controlled experiments, achieving a 3.9× improvement in median time to first token and increasing cache reuse from 0.5% to 82.9% in CPU-based testing.
EchoRelay A streaming speech-recognition system investigating how inference scheduling affects tail latency under GPU contention. Built with FastAPI, WebSockets, and faster-whisper, with reproducible GPU experiments and correctness verification.
Engineering at Scale ⚠️ Temporarily paused Research infrastructure investigating what breaks when AI-safety evaluations scale from small experiments to stateful, concurrent, distributed workloads — including reproducibility, provenance, failure recovery, monitoring, and safety-signal preservation. Development will resume after SentinelBench, the experimental benchmark used to drive and evaluate the next phase of the system, is completed.
Framing-Conditioned Capability Drift (FCCD) Framing robustness in proxy dangerous-capability evals (cyber, persuasion, self-proliferation) on Llama-3.1-8B. Deployment framing significantly lowered measured actionability vs. standard prompts (d = −0.73, Bonferroni-corrected); 13.7pp descriptive eval–deploy gap.
Behaviour–Mechanism Divergence Tracks behavioural and causal mechanistic measurements across transformer training; finds behavioural induction reaches ceiling substantially before activation-patching measurements stabilize, with negative controls, per-head localization, and architecture robustness experiments.
SafetyLens Tests whether safety evaluations remain reliable across evaluation vs. deployment framing, using paired multi-model experiments, automated LLM-as-a-Judge scoring, and statistical analysis of evaluation–deployment divergence.
AudioGuard Adversarial robustness evaluation for audio classifiers — FGSM, PGD, adversarial training
JAX Interpretability Mechanistic interpretability on a transformer built from scratch — logit lens, activation patching, SAEs
ScaleTrace Empirically recovers Chinchilla-style scaling laws from a small training grid
KernelBench GPU kernel benchmarking — PyTorch eager vs. torch.compile vs. Triton
e2e-ml-pipeline Production-grade ML pipeline with DVC, MLflow, and Dockerized FastAPI deployment

Background

Infrastructure & AI Systems Engineer by day, independent researcher the rest of the time. My engineering background (Python, PyTorch, JAX, Docker, Kubernetes, AWS, distributed data systems) is what lets me build and run the experiments behind the research, not just theorize about them.

Let's talk

If you're working on AI safety evaluation, interpretability, or adversarial robustness — or just want to talk shop about empirical ML research — I'd love to connect.

Pinned Loading

  1. e2e-ml-pipeline e2e-ml-pipeline Public

    Production-grade end-to-end ML pipeline using DVC for data/model versioning and MLflow for experiment tracking + model registry, with automated workflows and Dockerized FastAPI deployment for servi…

    Python

  2. echorelay echorelay Public

    Streaming ASR inference system exploring GPU scheduling, concurrency control, tail latency, and workload-dependent performance.

    Python

  3. relay-inference-case-study relay-inference-case-study Public

    Forward-deployed inference engineering case study: eight production-style latency, throughput, cost, and quality incidents diagnosed, optimized, and measured using vLLM and Python.

    Python

  4. safetylens safetylens Public

    Research-grade AI safety evaluation framework for measuring how prompt framing affects LLM safety behaviour.

    Python

  5. sandbox-agent sandbox-agent Public

    Security-focused AI coding agent with policy-enforced tools, verified Docker isolation, bounded execution, and adversarial evaluation.

    Python