David Hagege

Extraordinary Software Development Services

• Joynetiks provides top-notch software development and consulting services to companies of all sizes, with a focus on bringing Joy to everyone involved.

Agritech: Integrated Predictive Agronomic Platform (~40 people start-up, multi-cultural ~12 nationalities). Building the Gitlab for Farmers, working with satellite images to estimate farmers fields' health, production, and when their crops will bloom.

• Led the development of a mobile app + dashboard with over 40,000 users, serving farmers and agronomists
• Radically changed how the organization was working by promoting maximum Gitlab use and asynchronous communication for everyone. Gone from multiple meetings a day to around one meeting a week.
• Introduced the company to Nix/NixOS, establishing it as the standard for both development environments and deployment processes across different teams.
• In my first month, I also reduced the number of company's repositories by 90% and redesigned the infrastructure to minimize the use of microservices
• Led the redevelopment of a 4 years old mobile & web app in 5 months, including the successful migration of existing users.
• Built a scalable pipeline using PubSub & cloud functions for satellite image fetching (100,000+ images/day) and worked closely with researchers to ensure the success of our projects
• Constantly improved SQL queries to work with large amount of data (multi-million-row tables)
• Reviewed all team members' code for a minimum of 4 hours each day, providing constant feedback and suggestions.
• Built an extensive employee handbook using Hugo, providing a one-stop resource for new hires and a comprehensive documentation hub for the entire company

AR mobile apps / shopping platform

• Implemented robust development processes, including CI and testing, to improve efficiency and code quality on a previously disorganized project.
• Initiated the migration from Firestore to SQL on GCP (contributing to firebase in the meantime), successfully designed and built the entire backend for the app.
• Guided and mentored other engineers in making informed decisions and delivering high-quality work.

Japanese HR company that operates Doda.jp. As the tech lead of their HR Tech team, I was responsible for modernizing their systems.

• Developed a chrome extension that significantly improved the efficiency of recruiters and saved the company millions of yen.
• Identified and remedied multiple security vulnerabilities in the company's servers and processes.
• Set up and supervised Kubernetes clusters with Terraform on GCP to provide easy deployment of all their services. Implemented SSO to protect their services.
• Created a new website from scratch using React and Rails with Elasticsearch integration, providing a faster and more effective search experience that was fully synchronized with the company's Salesforce system.
• Made all technical decisions and adhered to really strict compliance regulations.
• Introduced automatic testing for the engineering hiring process, resulting in a 80% reduction in the number of applicants and saving hours of interview time.

A famous Japanese HR company. Scala and ruby on rails development.

• Worked on Vibe.work, a tool to analyze your team's morale with machine learning.
• Developed a highly popular team building platform called https://ludo.team, which continues to have over a thousand active users per month and has attracted clients such as Electronic Arts and BestBuy.
• Implemented an RPA solution that saved the company nearly 1 million USD annually.
• Mentored coworkers in Ruby on Rails and provided programming instruction to non-technical team members.
• Created enscalator, an open source tool for generating AWS CloudFormation templates, saving hundreds of hours of DevOps work within the team.
• Developed web crawlers to efficiently crawl and index hundred thousands of job postings from across the web.

Orange, the third largest telecom company in Europe. I had the opportunity to work in their labs in Tokyo and Seoul for a total of two and a half years.

• Developed Android apps with a Scala frontend and Ruby backend.
• Utilized a Kinect sensor to track consumer behavior and gather data on in-store customers.
• Designed and implemented a hot desk system using mobile phones, wireless charging, and Miracast technology. Had to hack my own Android ROM to make it work seamlessly.
• Worked on a solution for remotely controlling Android phones for technical support purposes.

Myndpage is a unique social network of brains that allows users to connect based on shared thoughts and ideas, using tags to identify like-minded individuals.

• Achieved to get Angel investor funding from France & Dubai

Now owned by Seagate. Storage solutions, hard drives, NAS and accessories.

• Performed cross-platform development in C and C++ for Network Attached Storage (NAS) and Direct Attached Storage (DAS) systems on Linux, OSX, and Windows.
• Created a multi-user interface for managing LaCie's encrypted DAS devices with biometric recognition.
• Ported a NAS management software to Linux.
• Conducted a complete rewrite of a tool for formatting hard drives in various scenarios, including the introduction of a new capsule file system with LaCie manuals and tools.

Famous Pharmaceutical company. Cross-platform development in Python 2.4 of a child growth hormone prescription application used by physicians.

Now one of the biggest Web Hosting company in France. Managing servers and developing new tools for clients.