Hello, I'm

Corentin "Corey" Réjaud

Founder & Software Engineer at a Stealth Company

Former Staff Software Engineer at Meta

Former Senior Software Engineer at Bloomberg L.P.

Triple Major: ECE, CS, Math

Education

Triple Major: ECE, CS, Math

Bachelors of Science in E.C.E. (Focus in Computer Engineering)

Bachelors of Science in Computer Science

Bachelors of Science in Mathematics

Rutgers University-New Brunswick — May 2017 — New Brunswick, NJ

Skills

Programming

Java, Kotlin, C, C++, Python, Assembly (MIPS & x86), SQL, Javascript (Ajax, JQuery, Jasmine), SystemVerilog, CUDA (PTX ISA), MATLAB, XML, JSON, Scheme, Bash, HTML, CSS, Ruby on Rails, Datalog

Software/Tools

Android, Unity, Firebase, UNIX (VIM), Git, Mercurial, TitanDB, DynamoDB, S3, PostgreSQL, Comdb2, QtSpim, ModelSim, Spim-Cache, Maple

Electronics/Design

Raspberry Pi 2, Filter Design, Digital System Design, Digital Logic Design, Circuit Design, Transistors (MOSFET & BJT), [Zener, Shottky] Diodes, Oscilloscope, Function Generator

Computer Aided Design

OrCAD, PSPICE, Quartus, Rhinoceros, Google SketchUp, AutoCAD, Blender

Math Concepts

Cryptography, Linear Algebra, Linear Programming/Optimization, Quantum Mechanics, Number Theory, Calculus 1-5, Relational Algebra, Fourier Transforms & Series (Continuous & Discrete time), Laplace Transform, Z Transform, Real Analysis

Spoken Languages

French and English

Experience

Founder & Software Engineer

Stealth Company — January, 2026 to Present

Staff Software Engineer

Meta — New York, NY — May, 2021 to August, 2025

Reality Labs

Senior Software Engineer

Bloomberg L.P. — New York, NY — June, 2017 to April, 2021

Data License Reference Data: Owns enterprise level products so that technical clients can access financial information programmatically as opposed to manually querying data through the Bloomberg Terminal.

Lead, designed, and implemented third-party alternative dataset generation workflows (Health Care, Energy, Filing Insights, etc) using Celery, RabbitMQ and Kafka. See article written on this project

Lead, designed, and implemented fundamentals finance dataset generation workflows (Revenue, Assets, Profitability, etc) using Celery, RabbitMQ, Kafka, Hbase, Pheonix, and Spark. Optimized CPU usage by 20x and run-time by 100x for filtering billions of datapoints per day. Scaled run-time performance of generating 500 datasets from 8 days to 2 hours.

Lead, designed, and implemented the revamping of a billion dollar product to use more modern technologies such as Celery, RabbitMQ, Parquet, Hbase, Pheonix and Spark.

Lead and implemented migration of high-value legacy C++ tasks from AIX & Solaris to linux. This lowered machine costs & leveraged newer microservice infrastructures.

Assume multiple leadership roles such as Post-Mordem Triage, Scrum Master, Multiple Project Leads and Mentorships.

Implement & maintain python workflows to access different categories of data such as Corporate Actions and Historical Data using Celery & RabbitMQ.

Maintain and extend C++/C/Fortran products which generate billions in revenue per year.

Software Development Engineer Intern

Amazon — Seattle, WA — June, 2016 to August, 2016

Amazon Fulfillment Technologies (AFT): Owns all of the software and infrastructure which powers Amazon's world-class fulfillment engine.

Integrated Query Path Filtering into the main APIs to give clients additional context on the path's behavior.

Integrated Query Path Validation into the main APIs through machine learning using a Finite State Machine.

Wrote a script to automate validation on large chunks of the graph when there is low volume on ING's APIs.

Used Titan Graph Database as well as Amazon's Dynamo and S3 databases.

Worked in Java and XML

Software Developer Intern

Seniorlink - Vayu Technology — Springfield Township, NJ — May, 2015 to Present

Worked on an Android application to provide a virtual care room for caregivers and patients to interact with doctors and specialists, record medical history, and much more. Uses REST API, Encryption, and JSON parsing. Written in Java and XML.

Created a web page to save video, audio, and photos from the device's camera and microphone. Works for both mobile (Android, iOS) and desktops. Written in HTML, CSS, Javascript, and optional PHP.

Created an Administrative Interface that enables easy system level configurations. Displays tables from Seniorlink's database. Written in Ruby on Rails using Active Admin.

Started the development of Javascript Unit Testing using Jasmine. Wrote over 500 tests and continuing to expand it.

Worked in Java, XML, HTML, CSS, Javascript (JQuery, Ajax, and Jasmine), Ruby on Rails, SQL.

Student Assistant

Rutgers Library Annex — Piscataway, NJ — September, 2013 to May, 2014

Working at the Library Annex in Rutgers University-New Brunswick.

Dealt with shipping, maintaining, imaging and wiping computer for the university libraries.

Maintained inventory and made Ethernet cords for the university libraries.

Projects

GitHub

Want to see more?

Visit me on Github!

Chibi Companion Android

Android Application with 6,500+ Installations.

An Android Application for a card game called Munchkin that keeps track of info during the game, helping the game become more time efficient and convenient.

Java, XML — Team of 2 — Summer 2014

CleverObjects Android

Android Wear Application with 300+ Installations.

CleverObjects lets you control your Smart Things switches and locks using voice command or buttons on your android wear watch.

Java, XML — Team of 2 — Summer 2014

Five Point Oh Chrome

Google Chrome Extension with 4000+ Weekly Users.

Placed in top 5 projects and won category for Best Rutgers Hack at HackRU Spring 2015.

This extension places an instructor's average RateMyProfessor score directly next to their name on WebReg, Schedule of Classes, and Course Schedule Planner.

JavaScript, Ruby (Sinatra), HTML, CSS — Team of 3 — Spring 2015

Five Point Oh Android

Android Application

An addition to the Five Point Oh Chrome Extension. Search for professors and rate them.

Java, XML, Ruby (Sinatra) — Spring 2016

Djdj Web Android

HackRU Spring 2016 Project

Login through Spotify, add other Spotify users, select a mood, and Djdj generates a Spotify playlist liked by all users. Useful for parties and group hangouts!

Ruby (Sinatra), JavaScript, HTML, CSS — Spring 2016

Tech World Clicker Android

Collaborative online incremental clicker game using Google's Firebase Real-Time Database and Authentication.

Create your own company, play with friends online, click to earn currency, hire employees, use abilities, and more!

Java, XML — Summer 2016

Ready Check Android

An automatic real-time survey that can be initiated by a member of a group to check if a group is ready.

Uses Google's Firebase Real-Time Database and Authentication as well as Google Cloud Messaging with a Node.js server for push notifications.

Java, XML — Fall 2016

Designer's Portfolio HTML5

Portfolio website for a designer using an HTML5 UP Template. Displays the designer's projects.

HTML5, CSS3 — Fall 2015

Android Chess Android

2-player chess in Android Studio with drag-and-drop, all legitimate moves including Castling, Enpassant, and Promotion. Record and playback games.

Java, XML — Spring 2016

PintOS C

Implemented Multi-threading with Priority Scheduling and Donation. Implemented User Programs with System Calls. Implemented the File System including mountables.

C — Spring 2016

Yabe SQL Java

Auction site similar to Ebay. User login, auction creation, bidding, automatic bidding, admin tools, and sales reports.

SQL, JavaScript, Java Service Pages, HTML, CSS — Spring 2016

Compiler for tinyL C

Created LL1 compiler to convert tinyL to ILOC assembly code. Created an optimizer to optimize ILOC assembly code.

C — Fall 2015

Bloom Filter Spell Checker Scheme

Infrastructure for creating and experimenting with different spell checkers based on hash functions. Functional Programming.

Scheme — Fall 2015

Parallel Spell Checker C

Using OpenMP, parallelize a spell checker in C. Parallel Programming.

OpenMP, C — Fall 2015

Text-Based Chess Java

Text-based 2-player chess using inheritance, interfaces, and lambda. All legitimate moves including Castling, Enpassant, Promotion.

Java — Spring 2016

Photo Album Java

GUI application. Create, Delete, Rename, Open, and Search Albums. User login with Admin accounts. UML-designed.

JavaFX — Spring 2016

Song Library Java

GUI application. Add, delete, and edit songs. Songs saved to file for persistence.

JavaFX — Spring 2016

Circuit Simulator C

Read from text files and simulate a combinational circuit using a tree-like data structure.

C — Spring 2015

Hash Table C

Read millions of lines and insert into a hash table of size 1000 with Linked Lists. Elegantly ~50 lines, no memory leaks.

C — Spring 2015

X-Wing 3D Model Rhino

Made in Rhinoceros 3.0.

Spring 2013

WiiMote 3D Model Rhino

Made in Rhinoceros 3.0.

Summer 2011

House 3D Model SketchUp

Made in Google SketchUp.

Spring 2013

Tic Tac Toe Java

Tic Tac Toe program using Java Swing GUI.

Java — Spring 2012

Time Incrementer Java

Intern Project for Maxeta Technologies. Standard and Military time, incrementing and decrementing.

Java — Spring 2015

Blackjack Java

Blackjack with Hit, Stand, Split, Double down, Surrender, and scrolling text.

Java — Spring 2013

Notable Courses

Contact

© 2026 Corentin Rejaud