Paris · open to full-time roles, February 2027

AyoubHammoudi

Software engineer, full-stack and AI platforms. I build data and LLM systems end to end, and my fixes land in Apache and Microsoft codebases.

Resume PDF See the work GitHub

Boarding passPAR → EU

Passenger

Ayoub Hammoudi

Software engineer, full-stack and AI platforms

From

Tunis · ESPRIT

Your team

Boarding

Feb 2027

Gate

Paris · EU

Carry-on

11 PRs merged upstream

github.com/Ayoubhm07

Code merged into

Built with and for

Cash Flow Positif
Phantera
FirstDown Tech
FCT
SweetcHome
Elyadata
IPSSI
ESPRIT

02Work

Four systems, one notebook.

Each chapter is a system I built alone, with the figure that proves it and the file that proves the figure. Open the book.

Field Notes

Four systems built alone

Ayoub Hammoudi

Vol. I · 2026

Chapter 1 · TaintracePage 3

An address on no list received 512.25 BTC. Three hops back, 11.07% of it came from a sanctioned wallet.

OFAC and OpenSanctions lists streamed in by Airflow without touching disk, live transactions screened over WebSocket and Kafka, contamination propagated through a Neo4j graph with the haircut rule over n hops.

received by an unlisted address: 512.25 BTC; Source: Taintrace README, measured 30 Jul 2026
tainted at three hops: 11.07%; Source: Taintrace README, measured 30 Jul 2026
addresses reached from 8 sanctioned ones: 1,391; Source: Taintrace README, hop distribution 8 / 50 / 289 / 1,044
unit tests: 240; Source: count of test functions in the repository

Python
Airflow
Kafka
MongoDB
Neo4j
Docker Compose

Code Run it in the lab

Chapter 2 · AftershockPage 5

7,939 archived versions of 2,128 earthquakes. One first published at 3.6 was revised to 5.2.

Three USGS sources into a Bronze, Silver and Gold lake on HDFS: Kafka in KRaft mode, Spark Structured Streaming with Delta Lake, four Airflow DAGs chained by Datasets, replay after a hard kill proven free of duplicates.

archived magnitude versions: 7,939; Source: committed data bundle, generated 27 Aug 2026
largest magnitude revision: +1.60; Source: committed data bundle, generated 27 Aug 2026
earthquakes that changed ID between versions: 1,151; Source: committed data bundle, generated 27 Aug 2026
ROC AUC, should the first magnitude be trusted: 0.83; Source: Spark MLlib GBT classifier, notebook output

Kafka
Spark Structured Streaming
Delta Lake
Airflow
HDFS
Spark MLlib

Code Run it in the lab

Chapter 3 · NucleusPage 7

31.7 KB of WebAssembly screens 13,577 EGFR molecules by Tanimoto similarity, here, on your machine.

ChEMBL EGFR data, Morgan fingerprints and Tanimoto screening in a Rust crate with a JavaScript fallback, benchmarked against itself live. Part of AI for Molecular Design, with RDKit notebooks behind it.

molcore.wasm, the whole engine: 31.7 KB; Source: public/molcore.wasm, 31,752 bytes
fingerprints screened in the browser: 13,577; Source: public/egfr_fps.bin, 13,577 x 64 bytes

Rust
WebAssembly
TypeScript
Next.js
RDKit
ChEMBL

Code Live Run it in the lab

Chapter 4 · PhanteraPage 9

Durable pipelines that never send twice, usage-based billing, and a guard that reads every reply for prompt injection in English and French.

Next.js and TypeScript on PostgreSQL. Orchestration on Inngest with deduplication by event key in Redis, Stripe usage metering, an evaluation harness in CI scoring F1 and accuracy on a golden set. Pre-launch, no customers yet.

prompt-injection patterns, English and French: 16; Source: lib/security/prompt-guard.ts, private repository, not publicly verifiable
golden replies scored in CI: 12; Source: evaluation golden set, private repository, not publicly verifiable

Next.js
TypeScript
PostgreSQL
Prisma
Inngest
Redis
Stripe

Live

01Taintrace512.25 BTC
02Aftershock7,939
03Nucleus31.7 KB
04Phantera16

Drag a page, use the arrow keys, or pull a ribbon. Or read every chapter as plain text.

These four chapters are only a sample. To see all of my projects, open my GitHub or my LinkedIn.

GitHub LinkedIn

03Lab

Three projects, running on their real data.

No screenshots. The chain, the earthquakes and the molecules below are the ones the projects produced, pinned to a commit.

lab://taintrace · real data, pinned to a commit

Running

04Skills

The tools behind fifteen projects, mapped.

Read from the fifteen projects on my LinkedIn profile. Six domains orbit a core, the projects ride the ring outside. Point at a skill to see where it was used, or at a project to see what it was built with.

Sealed until you jump

43 skills · 15 projects · 6 domains

Drag to turn the galaxy. Point at a skill or a project to light its threads.

The skills, as a list

Languages

Front end and 3D

Back end and identity

Data and streaming

AI and machine learning

DevOps and quality

05Open source

Eleven pull requests merged in codebases I do not own.

Apache, Microsoft, Prefect, SQLGlot, Agno. Each one started with a defect I traced to its line and ended with a maintainer pressing merge.

Arrivals · 11 pull requests merged · 5 organisations

microsoft/PyRIT #37623 Nov 2026+1000-0
Fifteen pull requests had fixed one identifier bug, component by component. One registry-wide test now catches it the day a converter lands Read the story
microsoft/agent-framework #973627 Oct 2026+36-2
Non-streamed Gemini calls could report the client default instead of the model the caller requested
agno-agi/agno #1078126 Oct 2026+12-0
Redis keyword search ignored its limit, hidden by two defaults of 10 that happened to agree. Ask for 50, get 10

8 more merged

microsoft/PyRIT #342422 Oct 2026+137-4
Six character-level selection strategies reported no settings, so converters selecting different text shared one hash
apache/kafka #2378613 Oct 2026+0-3
Duplicate test dependencies, removed with the dependency graph proven identical Read the story
microsoft/agent-framework #913913 Oct 2026+78-3
Streamed Gemini calls lost their model name, so token metrics belonged to no model Read the story
microsoft/PyRIT #307511 Oct 2026+38-0
Two scorers with different settings shared one identity, so cached results crossed over Read the story
microsoft/PyRIT #30149 Oct 2026+71-1
Score categories came out mangled in the printed score
apache/beam #404306 Oct 2026+0-1
A debug log printed in production for five years, removed Read the story
tobymao/sqlglot #85195 Oct 2026+3-1
DuckDB output dropped the UNIFORM seed, so every seed gave the same SQL
PrefectHQ/prefect #232815 Oct 2026+16-0
The configured Mattermost botname was silently ignored

apache/beam #40430

Merged 6 Oct 2021Removed 6 Oct 2026

A debug log printed in production for five years. Five years to the day.

apache/beam #40430 Read the story

@@ -1149,7 +1149,6 @@ def _setup_temporary_dataset(self, bq):       return     location = bq.get_query_location(         self._get_parent_project(), self.query.get(), self.use_legacy_sql)-    _LOGGER.warning("### Labels: %s", str(self.bigquery_dataset_labels))     bq.create_temporary_dataset(         self._get_parent_project(),         location,

Tools I publish

06Journey · Paris, open to relocation in Europe

From Tunis to Paris, one system at a time.

Internships, work-study, freelance missions and a company of my own, newest first.

Sep 2026 - present · Remote
E-KIGAI
Full-stack developer · Freelance
Jan 2026 - present · Paris
Phantera
Founder and software engineer · Founder
May 2026 - Sep 2026 · Remote
FCT
Full-stack engineer · Freelance
Jan 2026 - Aug 2026 · Paris
Cash Flow Positif
Full-stack developer, work-study · Work-study
Dec 2025 - Feb 2026 · Remote
FirstDown Tech
Full-stack engineer · Freelance
Aug 2025 - Jan 2026 · Paris
Cash Flow Positif
Full-stack developer intern · Internship
Jun 2024 - Nov 2024 · Dubai, remote
SweetcHome
Full-stack developer · Freelance
Jun 2023 - Sep 2023 · Tunis
Elyadata
Software engineer intern · Internship
Jun 2022 - Jul 2022 · Tunis
Elyadata
Software engineer intern · Internship