Tools are cheap.Judgement is the skill.
Everything below is something I've shipped with, not something I've read about. Each one links to the projects it was used on.
AI & data
Where my degree is, and where most of my curiosity goes.
PyTorch
Classifiers trained, exported to TorchScript, served in production
Transformers
BERT fine-tuning for temporal and sentiment classification
Embeddings & retrieval
Semantic search, similarity, recommendation over vector representations
LLM pipelines
Schema-constrained calls, prompt-as-config, generation and augmentation of labelled data
scikit-learn
Classical baselines, stratified splits, the metrics I report
spaCy & NLP
Custom NER, sentence segmentation, rule-based tagging
Backend & cloud
Serverless by default, and infrastructure I can redeploy without holding my breath.
Python
Lambdas, pipelines, training, tooling
AWS
Lambda, DynamoDB, Step Functions, AppSync, Cognito, S3, CloudFront, SES, Athena
Infrastructure as code
CDK stacks across two regions, with a deploy gate that blocks destructive diffs
DynamoDB
Access-pattern-first modelling across 28 tables
GraphQL
AppSync schema, resolvers, subscriptions for real-time collaboration
Node.js
Services and tooling
PHP
Where it started professionally, and a CRM still in daily use
SQL
Relational modelling and reporting, from MySQL behind a CRM to local SQLite
Frontend & product
The part users actually touch, which is also what I teach.
React
Two production apps sharing one component library
TypeScript
End-to-end typing, generated GraphQL types
Next.js
This site, and the Atelier suite
Tailwind CSS
Design systems that stay consistent across apps
Svelte & Vue
Client projects and the SAFE interface
Flutter
Cross-platform mobile, shipped on both stores
HCI
Interaction design, applied before I taught it at HEIA-FR
Practice
How the work gets made, not just what it's made of.
Agentic development
Coding agents with repo-level instructions, written skills and hard gates
Docker
Reproducible services, container-based Lambdas
Technical leadership
Architecture decisions, and directing students and freelancers
Teaching
HCI and semester projects at HEIA-FR, plus products built with pedagogues
Research
An Innosuisse project, a master's thesis, two publications