
Junior Joanis
Senior CTO | SaaS & Multi-Cloud Architecture
Salary / Daily rate
Amsterdam, Netherlands
Freelance
Skills
Languages
About me
Intro
CTO & Co-Founder with 10+ years building scalable B2B SaaS platforms and payment solutions. Led multi-cloud migrations, managed engineering teams, and architected high-availability systems for companies like Moodwork and Delfyn. Expert in Ruby on Rails, Kubernetes, AWS, and React Native - ready to transform your tech infrastructure and drive business growth.
Work experience
Co-Founder & CTO
Delfyn
Feb 2025 - Present
1 year 9 months
Amsterdam, Netherlands
Co-Founder & CTO
Unique Payments
Nov 2023 - Jan 2025
1 year 3 months
Amsterdam, Netherlands
Moodwork
Dec 2016 - Mar 2024
7 years 4 months
Advisor
Sep 2023 - Mar 2024
7 months
CTO
Dec 2016 - Oct 2023
6 years 11 months
Paris Area, France
Moodwork helps your employees truly thrive in their daily life at work. By improving well-being, reduce stress and prevent burnout in the workplace. Because the well-being of your employees is at the heart of the human and economic dynamic of your company, we have created Moodwork - an innovative digital solution to give them daily support in their personal development. Few achievements : - Building and improving our b2b app. - Migrated the SaaS platform from Amazon Web Service to OVH, Scaleway (multi-cloud) using Kubernetes. - Created a multi cloud, 3 tier archi, High available and secure infrastructure on OVH /Scaleway for Moodwork.com. - Created a Data lake in partnership with the Data team - Hired and Lead a team of Software Engineers (Developers, Devops, Data scientist, Mobile Developers) - Handling tech and staff budget - Advising for both business and technical challenges - Currently migrating the front stack to React Native Web Technologies: AWS, OVH, Puppet, Capistrano, Kubernetes, Docker, Ruby on Rails, React Native Web jQuery, rspec, git,PostgreSQL Redis, sidekiq.
Entrepreneur in Residence
Antler
Sep 2023 - Jan 2024
5 months
Amsterdam, Netherlands
Full Stack developer
Augment
Feb 2016 - Oct 2016
9 months
Paris Area, France
Augment is the leading augmented reality platform. It allows you to visualize your products in 3D in your real environment and in real-time through your tablet or smartphone. From CPGs to architecture and construction to art, Augment is a powerful tool across industry verticals. - Currently augmenting the stack
Software Engineer
Total Immersion
Sep 2013 - Mar 2016
2 years 7 months
Total Immersion provides one of the world’s most widely used commercial augmented reality platform. Through its patented D’Fusion® software solution, Total Immersion blurs the line between the virtual world and the real world by integrating real time interactive 3D graphics into a live video stream. Part of the SaaS team, I made the AR technology more open for both developers and end users. I had various challenges such as: - Building a SaaS product for augmented reality medias: www.trylive.com - Developing a third API documentation for developers. - Building a Scaling and High Availability strategy with AWS using elastic load balancer, Amazon ec2, auto scaling group, S3 and cloudfront, Redis Sentinel. - Deploying an infrastructure of 30 servers in china in partnership with Yihaodian (YHD.com). - Planning the development time using the Scrum methodology, Stand up meeting, poker planning and sprint.
Software Developer
Onefeat
Apr 2012 - Dec 2012
9 months
Région de la baie de San Francisco, États-Unis
The goal of Onefeat is to turn the whole life into a game. You earn points when you hug your grandma, grow a moustache or when you get to the top of a mountain. All you have to do is to send a picture of yourself doing it to get points. You unlock skills, trophies and you level up just like in a real game. - analyzed valuable metrics(Retention, MAU) and build a dashboard using rails - implemented Apple Push Notification feature, upload photos features, implement game mechanics. - Participated in the fundraising at the demo day @ I/O ventures, SF. Technologies: Ruby on Rails, rspec, git , jQuery, Delayed jobs...
Software Engineer Intern
DIMELO
Nov 2011 - Mar 2012
5 months
Paris Area, France
Incorporated in 2006, Dimelo is the European leader of SocialCRM software, We help brands leverage social media as a powerful way to augment returns of CRM initiatives, whether in sales, marketing, customer service or customer insights. I'm improving my Front end Skills( Prototype,JS) and I keep working on my backend skills (Ruby on Rails).
Software Engineer intern
Smartdate
Aug 2011 - Oct 2011
3 months
Paris Area, France
Smartdate is the future of online dating. An international platform loaded with Web 2.0 functionalities, fully integrated with Facebook, and featuring collaborative matching: Smartsearch . Launched April 2010. I built /improved cool features for the web site. (4,5 millions users) I used awesome languages and tools such as Ruby on Rails, git, vagrant environment and more... :) And I never forgot to develop unit-tests: TDD/BDD ( Rspec, Cucumber)
PHP Engineer
Crystal Asia
Apr 2011 - Jul 2011
4 months
Beijing, China
Founded in 2005, Crystal Asia is a multi-disciplined, foreign owned and run web development and creative agency based in Beijing, China. • Developed search features for the web site: hyperlingo.com. • Optimized the web site speed (index tables, ajax call, using cache…) Technolgies: Croogo CMS, cakePHP Framework, MySQL,jQuery, SVN, LAMP.
Education
SUPINFO
Master of Science (M.Sc.)
2008 - 2012
5 years
Hebei University of Science and Technology
Certificate
2010 - 2011
2 years
Dominican University of California
Bachelor
2009 - 2010
2 years