Santevet | Online booking dev-ops

23 - Present

France - remote

Key Responsibilities

• Stripe: add a card payment method to Santevet products, migrate our old stripe api to the latest
• Add Observability : prometheus / promQL / grafana
• Work on implementing a garbage collector for our Event and Data Stores.
• Solving front / back critical bugs

Github

• Commanded (CQRS/ES) : fix an OOM bug present for years in the commanded dependency.
• Prometheus high resolution metric : create a small memory footprint prometheus counter able to track millions of different counters, used intensively by our analytics

Environment

• AWS - Postgres - Phoenix - CQRS/ES - EventStore - Commanded - ElasticSearch - Stripe API - promQL - Broadway - Rust

Motorola | Full dev-ops

21 - 22

Key Responsibilities

• Devops for a cloud based telecom product that connects Land Mobile Radio systems over the internet.
• Specifically, write new kubernetes microservices (service-level agreement, ..) and deployed them in all regions
• Tasks like writing / running the deployment pipelines, the CI/CD integration, templates, helm chart, monitoring, logging
• SRE tasks : implement SLA measurement, on-calls, running post-mortem, improve reliability

Environment

• Kubernetes - Helm - Docker - Elixir - Elk - Azure Pipelines - Telemetry - PagerDuty - Prometheus - Continuous Integration - Rabbitmq - Grafana - Redis - Phoenix - GraphQL.

Kuantic | Lead

18 - 21

Sofia-Antipolis, France

Key Responsibilities

• Distributed fleet management technical interface for Stellantis
• Full refactoring of our existing stack, modernizing the erlang development process and deployments also add Elixir to our backend
• Improve the reliability and extensibility of the stack with message queues
• Add a big-data pipeline (Elixir) for data analysis (MapReduce, SQL backend) and third-party data export
• Add tools like Elastic Search and Elixir Dashboards
• Troubleshoot some issues

Github

• A local key-value cache
• A nif cache for openstreetmap

Environment

• NoSQL · MapReduce · Erlang · Distributed Systems · RabbitMQ · Broadway · Elixir · SQL · Docker · Kubernetes · Phoenix · Elastic Search

Online SAS | R&D Engineer

13 - 17

Paris, France

Key Responsibilities

• Architect a fault tolerant distributed storage with hot code reloading
• Implement a flexible, lightweight protocol layer (nbd) in erlang, allowing for example to move a customer storage to other geographic regions while the storage is still in use
  topics: live release upgrade, app profiling, riak LRU cache, blocks dependency graph, users volume live relocation, riak node crash recovery, data flow performance analysis, webmachine rest api
• Implement a fraud detection system based on emergent machine learning / AI technologies.
  Made the technical decisions (scikit versus legacy), build the features and python workflow (DB, Rest API).
  topics: scikit-learn, python, postgresql
• San servers as IOT (POC) for live snapshots and statistics data collection
  topics: qemu-nbd, iot
• Distributed testing of AWS S3 storage backend
  topics: basho_bench, tsung

Github

• a spatio-temporal logger

Environment

• Scikit-Learn · PostgreSQL · NoSQL · Storage Area Network (SAN) · Machine Learning · Erlang · Distributed Systems · Quickcheck · Docker · Qemu · Linux Kernel

Meetic | Lead

10 - 13

Paris, France

Key Responsibilities

• Architect and code new requirements for the chat system (+200K users)
• Add the js xmpp protocol (bosh) extension
• Package, benchmark, experiment new ideas in erlang :
• Develop a jabberd roster (contact) in NOSQL (Riak)
• Develop a game framework as a cluster extension for Ejabberd to supports simultaneously ten of thousands human interactions (NOSQL)
• A realtime 3D visualization tool to monitor chat traffic

Consultant | Embedded software

02 - 10

France

Key Responsibilities

• Based on the 18Crypt profile, architect of the NXP mobileTV CAS feature (conditional access); this multi sites project involved people from the Netherlands, India and Ireland (S3)
• Add multi-threading (EMM/ECM and Tuner) for the Philips STB DLI (Device Layer Interface)
• Develop a porting layer for PVR services based on ST40 crypto security
• Development of next generation SIM & KDA conditional access for Orange DVB-H mobiles
• Semi-formal testing of the sim software using Logic Programming
• Customize VLC to decode the rtp h264 ismacryp stream

CP8 Transac | R&D Engineer

97 - 02

Louveciennes, France

Key Responsibilities

• Javacard (3 patents), ensure INRIA and CP8 are aligned in their developments of a virtual machine and secure loader
• POC: french banking protocol B0' in javacard
• Sms-based E-purse transaction system (Proton smartcard and server)
• Add multi-threading to the SimToolkit (3 patents)
• Java bytecode optimizations - benchmarks

Github

• Prolog PC/SC interface, run semi formal tests in logic programming