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

7 fixes merged upstream

github.com/Ayoubhm07

Code merged into

Built with and for

Cash Flow Positif
Phantera
FirstDown Tech
FCT
SweetcHome
Elyadata
IPSSI
ESPRIT

Work

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

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

Lab

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

Skills

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.

Languages

Front end and 3D

Back end and identity

Data and streaming

AI and machine learning

DevOps and quality

Open source

Seven fixes merged in codebases I do not own.

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

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 @@     location = bq.get_query_location(         self._get_parent_project(), ...-    _LOGGER.warning("### Labels: %s", ...)     bq.create_temporary_dataset(

apache/kafka #23786

Merged 13 Oct 2026

Duplicate test dependencies, removed with the dependency graph proven identical

MINOR: Remove duplicate test dependency declarations

+0-3Read the story →

microsoft/agent-framework #9139

Merged 13 Oct 2026

Streamed Gemini calls lost their model name, so token metrics belonged to no model

Python: Honor the configured model in streamed Gemini chunks

+78-3Read the story →

microsoft/PyRIT #3075

Merged 11 Oct 2026

Two scorers with different settings shared one identity, so cached results crossed over

FIX: Include matcher configuration in decoding scorer identity

+38-0Read the story →

microsoft/PyRIT #3014

Merged 9 Oct 2026

Score categories came out mangled in the printed score

FIX: join score categories in pretty score output

+71-1

tobymao/sqlglot #8519

Merged 5 Oct 2026

DuckDB output dropped the UNIFORM seed, so every seed gave the same SQL

fix(duckdb): read the UNIFORM seed set by the Databricks parser

+3-1

PrefectHQ/prefect #23281

Merged 5 Oct 2026

The configured Mattermost botname was silently ignored

Pass the configured botname to NotifyMattermost

+16-0

Proposed, in review

Journey · 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
E-KIGAI
Full-stack developer · Freelance
Remote
Jan 2026 - present
Phantera
Founder and software engineer · Founder
Solo-built LLM outbound platform, pre-launch.
Paris
May 2026 - Sep 2026
FCT
Full-stack engineer · Freelance
SEO and AEO refactor on Next.js 15, React 19 and TypeScript. Every build gated by Lighthouse CI budgets across 9 pages, plus Playwright specs.
Remote
Jan 2026 - Aug 2026
Cash Flow Positif
Full-stack developer, work-study · Work-study
Scraping robots and AI agents collecting from 51 real-estate sources over Kafka. Built the Scheduler Command on Fastify and TypeScript microservices, balancing tasks by per-source quotas. Docker, Grafana, Loki.
Paris
Dec 2025 - Feb 2026
FirstDown Tech
Full-stack engineer · Freelance
Delivered the FirstDown Tech website end to end on Next.js 15 App Router, strict TypeScript and Tailwind CSS v4, with JSON-LD for answer engines.
Remote
Aug 2025 - Jan 2026
Cash Flow Positif
Full-stack developer intern · Internship
Fastify and TypeScript microservices and React front end on the CFP Hub real-estate platform.
Paris
Jun 2024 - Nov 2024
SweetcHome
Full-stack developer · Freelance
Property and client matching algorithm and price predictions over scraped listings. A CNN image classifier served through a Flask API.
Dubai, remote
Jun 2023 - Sep 2023
Elyadata
Software engineer intern · Internship
CV generator on Angular, Spring Boot, LaTeX, Kafka and Docker.
Tunis
Jun 2022 - Jul 2022
Elyadata
Software engineer intern · Internship
Keycloak authentication service on Spring Cloud behind an API gateway.
Tunis