Seb Aoki

Welcome to my website!

I have 20 years of experience about designing and developing software, as well as being an indie game developer.

My passion for computer science started long before I got my license degree. I learned programming when I was a teenager because I wanted to build video games.

My main qualities are that I work efficiently and am very detail-oriented. My ideal workflow involves a strongly typed language and expansive unit and e2e test suites. This allows me to deliver high quality work with little to no bugs or regressions.

I love keeping things simple while finding the right balance to answer business requirements, without creating technical debt.

I live in Tokyo, am native from France and can fluently speak English and Japanese.

You will find below a summary of my skills, knowledge and experience.

jQuery

Active Pieces

SQL Server

Cypress

PostgreSQL

Apache

SQL

ByteBase

Inkscape

WebExtensions

Windows

VueJS

Github actions

render.com

TypeScript

Progressive Web App

Bash

Firebase

Terraform

Auth0

MongoDB

Digital-Ocean

CircleCI

DataDog

Wings3D

Kanban

OpenAPI (Swagger)

RabbitMQ

CSS

Gimp

JSON Schema

Maths

ShapeUp

Scrum

C

NestJS

Waterfall

Google APIs

GraphQL

Elastic Search

OpenGL

XML

Redis

Go

Redash

Java

MUI

SQLite

Node.js

Nginx

HTML

Jenkins

Rust

IIS

SVN

Vim

C++

Playwright

AWS

Rod

React

OpenTofu

MySQL

Kubernetes

Docker

Redux

VBA

Cordova

CDK

Electron

Linux

PHP

ImGui

Git

JavaScript

Select a category to see my skills

June 2025 - Ongoing

Shippio

Frontend engineer

Design features and implement the frontend

JavaScript
TypeScript
React
MUI
Apollo Client
Redux
Vitest
Playwright

Analyze the specifications and lead the design phase (frontend and backend)
Implement the frontend side of features while cooperating with the backend team
Unit and e2e testing using Vitest and Playwright
Refactoring legacy code and upgrading the quality of the codebase

April 2024 - May 2025

Shippio

Senior infrastructure & DevOps engineer

Manage, extend and improve the infrastructure

AWS
CDK
Terraform
OpenTofu
Docker
PostgreSQL
Bash
Github actions
Active Pieces
ByteBase
Redash
DataDog
Go
JavaScript
TypeScript
Auth0
FireBase
Git
Linux
SQL
ShapeUp
Vim

Manage and improve the security of the infrastructure
Refactor existing IaC code
Add new IaC (OpenTofu) code for manually managed infrastructure
Implement and improve code deployment pipelines (CI)
Monitoring and optimization of databases
Managing the security of the AWS resources and networks/VPCs
Analyzing use-cases and choose/install better tooling

April 2025 - Ongoing

Jacket Lab

Developer

Application to design and print custom dust jackets

Go
Templ
Rod
Sqlc
HTML
CSS (Bootstrap)
JS
Vim
Git

Designing and developing an application using Go and server side rendering
Automating a browser on the backend side to generate PDFs
Unit and e2e testing using Go and Rod
Searching and using a low-cost and low-maintenance host

March 2024 - Ongoing

Portfolio

Developer

Developing my portfolio website

Go
Templ
HTML
CSS
Vim
Git

Graphical design and development of my website
Challenging myself to make the fastest possible website
Pre-rendering templates into static files
No-JS, Vanilla CSS with the latest features
Fluid Vanilla responsive design

January 2022 - Ongoing

Astral Divide

Indie game developer

Developing an indie 2D video game

Go
OpenGL
Maths
Inkscape
Gimp
C
Bash
Linux
Vim
Git
Kanban

Design and development of an indie video game
GPU rendering with a customized pipeline using OpenGL (shaders, blending…)
Keeping a maintainable code architecture
Implementing algorithms for procedural generation of various gameplay elements
Researching various data structures to organize the data with a minimal performance and memory footprints
Drawing my own graphical assets using InkScape
Designing and writing an Immediate Mode GUI based on OpenGL

January 2024 - March 2024

AXA (via Abbeal)

Full-stack engineer

Internal tools to manage risk assessment processes

Node.js
Jest
TypeScript
Sequelize
Fastify
Passport
React
React-Query
Vitest
SQL
MySQL
SQLite
Windows
Jenkins
Vim
Git

Helped debugging a new internal application

October 2023 - December 2023

Les Grands Crus (via Abbeal)

Tech-lead

Public opening of an API about wine trading

Node.js
TypeScript
Express
Jest
Passport
OpenAPI (Swagger)
MongoDB
Heroku
CircleCI
Linux
Vim
Git
Kanban

Analyzed existing codebase and architecture
Made plans to increase the quality and reliability of the codebase
Converted the codebase from raw JS to strict TypeScript
Switched the codebase to a 3-tier architecture with a validation layer
Introduced unit tests

June 2023 - June 2023

Presentation (via Abbeal)

Animating a presentation

Golang: monads, pure functions and pointers

Writing a presentation about a technical topic
Presenting it in an online live event

October 2022 - August 2023

Shippio (via Abbeal)

Tech-lead

Orchestration of crowd-sourced scraping tasks

Go
SQL
PostgreSQL
Docker
Google APIs (Spreadsheets, Drive)
AWS (S3, ECS, StepFunction, CodeDeploy)
Terraform
Waterfall
Serverless
CircleCI
Bash
Linux
Vim
Git
AG Grid

Analyzing existing codebase, architecture and customer satisfaction
Making plans to increase the quality and reliability of the system
Migrated the codebase to a 3-tier architecture
Refactored a codebase of spaghetti code without impacting the service
Analyzed existing constraints and migrated a custom cron system to a StepFunction workflow, running CLI commands in Docker containers
Improved the Git workflow and deployment process, including CI checks (lint, unit tests)
Managing the process of merging two separate teams and organizations together
Planning and estimating the tasks
Documenting the architecture to onboard new developers

February 2022 - March 2022

Blog article (via MonstarLab)

Tech writer

Introduction to GPUs with OpenGL

JavaScript
OpenGL
Maths

Implementing an OpenGL demo
Writing a blog article to explain it
Preparing a step-by-step tutorial and illustrations

September 2021 - August 2022

Satos (via MonstarLab)

Backend developer

Cryptocurrency marketplace

Node.js
NestJS
Jest
TypeScript
Docker
AWS (S3 ECS, ECR, Batch, CodePipeline)
Terraform
SQL
PostgreSQL
RabbitMQ
CircleCI
Linux
Vim
Git
OpenAPI (Swagger)
Scrum

Analyzing third-party API specifications
Designing a database that ensures financial data integrity and safety
Designing an event-driven architecture with micro-services
Specifying flow diagrams for complex trading operations
Implementing various trading processes in a way that ensures the quality and integrity of the transactions, in a distributed and asynchronous environment.
Analyzed available solutions and settled on an event-driven approach using RabbitMQ
Migrated from MySQL to PostgreSQL to make use of it’s more powerful capabilities
Implemented various infrastructure components on AWS using Terraform
Planning and estimating the tasks and sprints

January 2021 - March 2022

RODB

Open source developer

Static database/micro-service generator

Go
Docker (Compose, Dockerfile, Buildkit)
JSON Schema
Jekyll
CSS (Sass)
HTML 5
Github actions
Github pages
SQLite
Bash
Linux
Vim
Git
XML
Kanban

Implementing an open source project
Studying and implement various indexation techniques
Writing a complete technical documentation and website
Designing the codebase architecture for a service with unique constraints

November 2020 - February 2022

NicoNico Channel+ (via MonstarLab)

Back-end lead

Implementing a high-traffic live-streaming video platform

Go
GraphQL
Node.js
TypeScript
Express
Socket.IO
Jest
Docker
Kubernetes
Helm
AWS (EC2, S3, EKS, ECR)
SQL
MySQL
Github actions
Bash
Linux
Vim
Git
Waterfall

Designing and maintaining the architecture of a codebase under intensive development
Delegating responsibilities to ensure the productivity
Designing the codebase architecture to ensure future maintainability and security
Developing the Kubernetes infrastructure
Developing the Docker files for Go (based on the scratch image)
Developing CI automations (testing, deployment, code style)
Synchronizing a team of about 50 people
Synchronization between the system engineering team and the implementation team
Helping communication in a multilingual and multicultural team
Helping the system engineers to design the database and API specifications in a secure and maintainable way according to the constraints of the implementation side.
Cooperation and coordination with the frontend team

August 2020 - January 2021

Kiss-ORM

Open source developer

Developing an ORM for TypeScript

Node.js
TypeScript
Jasmine
SQL
MySQL
PostgreSQL
SQLite
Github actions
Docker
Vim
Git

Implementing an open source project
Searching for a good design that allows using the power of SQL while having some benefits of an ORM
Writing technical documentation

March 2019 - July 2021

Kanjimi

Solo developer and entrepreneur

Failed business attempt about a Japanese learning SAAS tool

Node.js
Express
VueJS
TypeScript
CSS (Bootstrap)
SQL
PostgreSQL
WebExtension
Progressive Web App
Docker
Github actions
Kubernetes (Digital Ocean)
Git
Bash
Nginx
Linux
Vim
Kanban
Jasmine

Designing and developing a REST API using Node.js, Express and TypeScript
Developing a tokenizing algorithm for Japanese texts
Parsing, converting and optimizing the performance and memory footprint of hundreds of megabytes worth of dictionary data
Graphically designing and implementing a frontend
Developing and open-sourcing an ORM package (Kiss-ORM)
Developing, automating and testing a browser extension for Google Chrome and Firefox
Making the application available as a Progressive Web App
Unit and e2e testing using Jasmine and Cypress
Horizontally scalable cloud infrastructure using Kubernetes on Digital Ocean
Local development stack using Docker-Compose
Writing docker files
Various Bash scripting
Studying the legal side of hosting data, copyright rules, privacy policies, contracting (terms and conditions).

January 2019 - October 2020

HiVelocity

Full-stack tech-lead

Full-featured multi-tenants platform to create and manage event-related websites (manga-cafes, concerts...).

PHP 7
Laravel
PHPUnit
PHPStan
SQL
MySQL
SQLite
Cypress
CircleCI
Github actions
Git
Docker
Redis
Bash
Nginx
Vim
Kanban

Porting and modernizing features from legacy CMS and ecommerce apps
Implementing a multi-tenants architecture that automatically generates websites
Heavily refactoring code to a modern 3-tier architecture (controller, service and repository layers using a data-mapping design)
Implementing and separating the concerns in micro-services
Adding and implementing multiple layers of testing (PHPUnit and Cypress)
Developing and then porting (from CircleCI to GitHub actions) a complex CI pipeline to automatically test, deploy, statically analyze code and check the code style.
Writing and maintaining Dockerfiles and related scripts, as well as the Docker-Compose stack.
Tech-leading the team
Code-reviewing
Helping the team to grow by improving the company processes and standards

September 2018 - December 2018

SBT - Human Matters (via Abbeal)

DevOps engineer

AppStore-like application and CI automations for services related to mental-health care.

JavaScript
TypeScript
Node.js
React
Redux (Rematch)
Electron
Cordova
GitLab CI
Docker
PostCSS
Bash
Git
SVN
Windows
Vim
Kanban

Analyzing the status of the existing legacy application
Making technical recommendations to the customer to ensure future maintainability
Porting and implementing it in a new stack
Support for the legacy application library inside the modern codebase
Developing a CI process to fully automate the building and deployment of the application
Making sure that the application works on various devices using Cordova and Electron

June 2018 - July 2018

Cinémas Lumière (via Novius)

Full-stack developer

Website to manage and show the planning of cinemas

PHP 5.6
FuelPHP 1.7
SQL
MySQL
CSS (Sass, Foundation 6)
JavaScript (ES6)
jQuery
GitLab CI
Cypress
Xpath
Git
Bash
Nginx
Linux
Vim
Scrum

Writing functional and technical specifications
Database design
E2E tests using Cypress
Cooperating with the PM on analyzing the customer’s requirements
Planning and estimating the tasks and sprints

May 2018 - June 2018

AnkiMelon

Open source developer

Browser extension to add Japanese vocabulary to Anki when using Animelon.

JavaScript
TypeScript
React-Lite
Webpack
WebExtension
Linux
Vim
Git

Publishing an open source package
Developing a browser extension for Firefox

February 2018 - March 2018

Cité de la céramique de Sèvres (via Novius)

Full-stack tech-lead

CMS-based website to showcase the contents of the museum

PHP 5.6
FuelPHP 1.7
SQL
MySQL
JavaScript (ES6)
jQuery
CSS (Sass, Foundation 6)
GitLab CI
Cypress
Git
Bash
Nginx
Linux
Vim
Scrum

Writing functional and technical specifications
Database design
Reviewing code
E2E tests using Cypress
Automating the deployment using Bash scripts
Setting-up various automations using GitLab CI
Tech-leading the team
Cooperating with the PM on analyzing the customer’s requirements
Planning and estimating the tasks and sprints

October 2017 - February 2018

RSA Cosmos (via Novius)

Backend Tech-lead

REST API for a software used by many museums and planetariums world-wide

PHP 7
Laravel 5.5
PHPUnit
AWS (S3)
SQL
MySQL 5.7
SQLite
Elastic Search 5.6
GitLab CI
Bash
OpenAPI (Swagger)
JSON Schema
'JSON:Api'
ReDoc
Git
Nginx
Linux
Vim
Scrum
Docker

Writing technical specifications and an OpenAPI documentation based on customer requirements
Database design
Designing a clean architecture with end-to-end tested endpoints
Implementing the API
Reviewing code
File upload system scalable to hundreds of Gigabytes using AWS S3
Full e2e testing of the endpoints using PHPUnit
Automating the deployment using Bash scripts
Setting-up various automations using GitLab CI
Tech-leading the team
Cooperating with the customer’s development team to find requirements and help integrating the API
Planning and estimating the tasks and sprints

April 2017 - December 2018

OFAJ (via Novius)

Full-stack tech lead

Platform to promote intercultural exchanges between France and Germany.

PHP 5.6
FuelPHP 1.7
SQL
MySQL
JavaScript (ES6)
jQuery
CSS (Sass, Foundation 6)
Elastic Search 5.6
GitLab CI
Bash
Cypress
Git
Nginx
Linux
Vim
Scrum

Writing functional and technical specifications, including permissions management, multi-language contents, data-versioning and moderation features
Database design
Reviewing code
Developing and maintaining open source addons for a custom CMS.
E2E tests using Cypress
Automating the deployment using Bash scripts
Setting-up various automations using GitLab CI
Tech-leading the team
Cooperating with the PM on analyzing the customer’s requirements
Planning and estimating the tasks and sprints

June 2016 - December 2016

Mylan Meilleure Santé (via Novius)

Full-stack tech-lead

Platform providing services such as a medication calendar or taking online appointments.

PHP 5.6
FuelPHP 1.7
SQL
MySQL
JavaScript
jQuery
CSS (Sass, Foundation 5)
Grunt
Bash
Git
Nginx
Linux
Scrum

Writing functional and technical specifications
Database design
Reviewing code
Implementing strong regulatory privacy rules about handling medical data
Automating the deployment using Bash scripts
Setting-up various automations using GitLab CI
Tech-leading the team
Cooperating with the PM on analyzing the customer’s requirements
Planning and estimating the tasks and sprints

April 2016 - June 2017

Gouiran Link (via Novius)

Full-stack Tech-lead

B2B and multi-tenant B2C platforms providing hair and beauty salons tools

PHP 5.6
FuelPHP 1.7
SQL
MySQL
JavaScript (ES6)
React
Redux
Immutable.js
CSS (Sass, Foundation 5)
Elastic Search 2.6
Webpack
Bash
Git
Nginx
Linux
Vim
Scrum

Writing functional and technical specifications
Database design
Reviewing code
Developing and maintaining open source addons for a custom CMS.
Automating the deployment using Bash scripts
Setting-up various automations using GitLab CI
Tech-leading the team
Cooperating with the PM on analyzing the customer’s requirements
Planning and estimating the tasks and sprints

November 2015 - May 2017

Theotokos (via Novius)

Full-stack tech-lead

Dating WebApp of about 50k users

PHP 5.6
FuelPHP 1.7
SQL
MySQL
JavaScript
jQuery
Elastic Search 2.3
CSS (Sass, Foundation 5)
Grunt
Bash
Git
Nginx
Linux
Vim
Maths
Scrum

Writing functional and technical specifications
Database design
Reviewing code
Designing and implementing a matching and ranking algorithm between profiles by analyzing the existing data and user behavior.
Developing and maintaining open source addons for a custom CMS.
Automating the deployment using Bash scripts
Setting-up various automations using GitLab CI
Tech-leading the team
Cooperating with the PM on analyzing the customer’s requirements
Planning and estimating the tasks and sprints

September 2015 - April 2018

Gerflor (via Novius)

Full-stack developer

Maintaining and adding features to a multilingual website

PHP 5.6
FuelPHP 1.7
SQL
MySQL
CSS (Sass)
JavaScript
jQuery
Bash
Nginx
Linux
Git
XML
Scrum

Fixing existing code
Adding new features
Multilingual website and contents

January 2013 - December 2015

StackOverflow

Active contributor

Helping people about programming questions on a famous public platform

PHP
JavaScript
SQL
CSS

I got 4.5k reputation points on StackOverflow for my contributions

2013 - 2015

GlitchyVerse

Indie game developer

3D space video-game

JavaScript
Maths
WebGL
Go
HTML 5
Gimp
Wings3D
Git
SQL
SQLite
Linux

Developing and designing a 3D engine from scratch based on WebGL (OpenGL ES 2.0)
Using geometry-related mathematics, matrices, quaternions
Software architecture
Low-level optimization
Drawing 3D models using Wings3D
Parsing and rendering 3D models (.obj) files

2013 - 2013

Open-Classrooms

Open source writer

Writing video game dev tutorials (in French)

HTML 5
JavaScript

Implementing a small video game in HTML 5 and JavaScript
Writing a step-by-step tutorial to explain how it works

September 2011 - August 2015

Crédit Agricole

Software & Business Intelligence developer

Developing internal applications and data reports at the Sud-Rhône-Alpes branch

PHP
HTML
CSS
JavaScript
jQuery
SQL
Transact-SQL
MySQL
SQL Server
Access
VBA
Windows Server
Business Objects
Laravel
Git
XQuery
Apache
IIS
SOAP
Linux
Jenkins
XML
Waterfall

Analyzing business requirements, writing functional and technical specifications as well as wireframes
Database design
Estimating and planning projects
Developing various internal applications using PHP
Analyzing and extracting data for BI and regulatory purposes, via GUI tools and SQL
Complex and multi-server SQL queries using SQL Server and Transact-SQL
Interfacing modern applications with the legacy mainframes using ActiveX APIs
Maintaining and backupping the application servers using PHP, MySQL and IIS on Windows Server

April 2010 - July 2010

CNES & IUT de Valence

Full-stack developer

Developing the ground station for sending a probe balloon in the stratosphere, with live tracking and telemetry

Java
HTML
CSS
MongoDB
XML
Google Earth (KML)
C++
Linux

Receiving, parsing radio signals and handling transmission errors
Defining a common protocol among teams
Saving and showing live data (position, temperature, pressure, altitude ...) on the website
Live-tracking of the balloon’s position using Google-Earth APIs

November 2007 - December 2010

Mu-Intensity

Tech-lead

Private server instance of the Mu-Online video-game (MMORPG)

PHP
HTML
CSS
SQL
SQL Server
Apache
JavaScript
Windows Server
SVN
C++

Implementing a dynamic website and forum
Interfacing the closed-source game with a custom PHP/SQL website
Maintaining and updating Windows Server and SQL Server
Scaling the system for 500~1000 active users at peaks
Understanding, finding and patching lots of security vulnerabilities
Contributing to the community management

2006 - 2008

PHPSimul

Developer and community manager

Web-browser based game engine/CMS

PHP
SQL
CSS
HTML
MySQL
Apache
Windows
SVN

Database design
Development of a CMS-like platform
Deployment on OVH hosting
Leading an open-source community
Coordinating and code-reviewing the contributions to the project

2005 - 2007

Epic Arena

Indie game developer

Web-browser based RPG

PHP
SQL
CSS
HTML
MySQL
Apache