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🏊
producing bugs
🏊
producing bugs
72 followers · 109 following
  • open-2-work
  • Florianópolis, SC, Brazil
  • 15:09 (UTC -03:00)
  • LinkedIn in/mhoffmannbr

Achievements

Achievement: Pull Sharkx4Achievement: Pair Extraordinairex4Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pull Sharkx4Achievement: Pair Extraordinairex4Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Highlights

  • Pro

Organizations

@iu-pay

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h0ffmann/README.md

📄 cv (en) · 📄 cv (pt-BR) · 📄 cv (ja) · 🇧🇷 português · 🇯🇵 日本語

👋 me

sr. software engineer with 8 years of experience building scalable (and occasionally clever) solutions mainly for payment processing & fraud-fighting

LinkedIn

building 🌊 marola — the ocean intelligence layer

QR code for marola.dev

forecasting and intelligence for the sea: swell, wind, tide, hazards and surf conditions, turned into signals you can actually act on.

marola.dev FOSS soon

civic-tech disaster-risk-management meteorology non-profit oceanography water-quality

🔓 going open source soon — want to contribute? mail me: mhoffmannfs[at]gmail.com

🫀 core

Scala Python Machine Learning Claude Code Nix SQL Apache Airflow

⚡ high-end

Apache Kafka Apache Spark PySpark Delta Lake Databricks Akka / Apache Pekko CUDA

🤖 machine learning

scikit-learn MLflow Kubeflow Amazon SageMaker XGBoost PyTorch Optuna

🧠 llm & agents

Model Context Protocol DSPy RAG (retrieval-augmented generation) Ollama OpenCode Hugging Face LoRA / DPO fine-tuning (PEFT, GGUF export) Langfuse

☁️ cloud & infra & etc

AWS Amazon S3 Amazon EC2 Amazon EKS Amazon EMR Amazon Kinesis Amazon Redshift Amazon DynamoDB AWS Glue Kubernetes Docker OpenTelemetry Prometheus Grafana dbt

❄️ nix labs

self-contained nix flakes for the toolchains i work in, at nix-config: one directory per lab, consumed by other repos as a flake input, a sparse submodule or a github action.

nix-config ci

lab what nixpkgs locked toolchain
agentic ai-jail, OpenCode, gh, and jail-run / gh-token / clip / clip-relay eaad089 2026-09-11 (8 days ago) gh 2.100.0 · opencode 1.18.30 · bubblewrap 0.12.0
cuda nixos-cuda binary cache setup, torch venv with the driver libs on its path; x86_64-linux only eaad089 2026-09-11 (8 days ago) python3 3.14.7
lint hadolint, actionlint, shellcheck, ruff, pyflakes, cloc, coverage, pdoc as one list eaad089 2026-09-11 (8 days ago) hadolint 2.14.0 · actionlint 1.7.12 · shellcheck 0.11.0 · ruff 0.16.6
pratico WAVEWATCH III toolchain (gfortran / OpenMPI / NetCDF), zsh-ai pilot, ai-jail recipes eaad089 2026-09-11 (8 days ago) gfortran 15.3.0 · openmpi 5.0.10 · netcdf 4.10.1 · hdf5 1.14.6 · eccodes 2.48.0 · kokkos 5.2.0 · gtest 1.18.0 · cmake 4.4.2
publisher pandoc + TeX Live, mkPdf and mkDocx, a composite Action that builds and commits documents eaad089 2026-09-11 (8 days ago) pandoc 3.7.0.2 · texlive 2025 · python3 3.14.7 · librsvg 2.62.3

📊 stats

all-time contributions

most used languages

  1. ↑ Pushed to main in h0ffmann/ww3-gpu
  2. ↑ Pushed to docs/bend-tryout in h0ffmann/ww3-gpu
  3. ◇ Opened issue #35 in h0ffmann/ww3-gpu
  4. ↑ Pushed to docs/bend-tryout in h0ffmann/ww3-gpu
  5. ◆ Opened PR #34 in h0ffmann/ww3-gpu
  6. ↑ Pushed to main in marola 🔒 FOSS soon
  7. ◆ Opened a PR in marola 🔒 FOSS soon
  8. ◇ Opened issue #33 in h0ffmann/ww3-gpu
  9. ◆ Opened PR #32 in h0ffmann/ww3-gpu
  10. ↑ Pushed to main in h0ffmann/nix-config

💼 exp-highlights

  • itv (uk) - ml/mlops on aws for channel audience forecasting (2025/2026)
  • signifyd (us - award winner tenacious feb/2024) - ml eng. for loss forecasting & risk-analysis on databricks (2023/2024)
  • elemeno AI (us - br client bvmf: AMER3) - mlops engineer with k8s on gcp (2021/2022)
  • broad (uk) - sr. software engineer with scala for digital banking on gcp (2020)
  • stone (br: nasdaq: STNE) - ml & software engineer with scala on aws (2017-2019)
  • LIOC (br: UFRJ/COPPE) - ocean instrumentation lab - scientific research, ROV, microcontrollers (2016/2017)

🏅 certs

AWS Cloud Practitioner

AWS ML Specialty

AWS ML Engineer Associate

AWS Data Engineer Associate

📚 learning

studying for Google Cloud Professional Agentic Architect

🏊 misc

strava (open water swimming)

PADI Advanced Open Water Diver PADI Enriched Air (Nitrox) Diver PADI Rescue Diver

Pinned Loading

  1. ww3-gpu ww3-gpu Public

    ocean wave modelling lab around WW3 (NOAA's third-generation spectral wave model): 16-lesson course, runnable cases, a Nix-pinned Fortran/MPI/NetCDF toolchain with one-command regression tests, RTX…

    C++

  2. gcp-agentic-architect gcp-agentic-architect Public

    learning agents on GCP

    Python

  3. montaigne montaigne Public

    next level text-to-sound

    Python

  4. okekara okekara Public

    synchronized lyrics and karaoke mode to YouTube Music

    TypeScript

  5. nix-config nix-config Public

    my nix obcessions

    Nix 1

  6. nashkell nashkell Public

    game theory + haskell

    Haskell