
Guillaume Ducret
Verified Expert in Engineering
Software Developer
Guillaume is an independent consultant with 10 years of experience working with small and large companies globally, focusing on Node.js and JavaScript architecture and development. As a technical lead, he facilitates the adoption of Agile methodologies like Scrum.
Portfolio
Experience
Availability
Preferred Environment
Git, MacOS, Visual Studio Code (VS Code)
The most amazing...
...software I've built is a call center application used by 500 agents which processes over 20,000 calls per day.
Work Experience
Software Architect | Full-stack Developer
Freelance
- Led the development of splitflow.io, a SAAS no-code style editor for UI designers.
- Developed a Flutter package to display map tiles (Sterna—moving map for Flutter).
- Created a Dart package to sync data from a remote data source. Incremental sync is supported using a Git Repo as a data source (Hive-mirror, one-way sync for Hive DB).
- Developed a React back end to generate PDFs (React-PDF kit, library to build PDFs using the React API).
- Worked on both an Android application and an isomorphic web app, Livepeak—a live tracking app for outdoor enthusiasts.
- Developed an Android application to monitor and control a life support device through a Bluetooth connection.
Senior Front-end Developer
Yaron Lev
- Developed a Flutter app targeting web and desktop.
- Improved the application state management, which resulted in significant performance improvements.
- Performed code reviews and introduced best practices.
Tech Lead
Calxis Management Consulting Gmbh [Toptal Teams]
- Estimated the development effort and helped the product owner to refine his priorities.
- Defined the project architecture, including live video broadcasting and real-time position tracking.
- Identified the project's main risks and proposed strategies to mitigate them.
Lead Developer
UpliftNow
- Helped the company to grow from the prototype stage to seed funding.
- Developed a responsive web application from the ground up.
- Formalized the development process and onboarded the first employees.
- Developed a mobile app featuring chat and voice/video calls with Flutter.
Lead Front-end Developer
Performance Immo
- Developed a web app front end from scratch with React.
- Developed a React-PDF kit and a React back-end to build PDF documents easily with the React API.
Front-end Developer
Icodrive
- Developed a React Native game dedicated to riding shares.
- The application connected to the car infotainment system's private wifi endpoint.
- Developed a Redux-based data synchronization system.
Lead Front-end Developer
Performance Consumer Groupe
- Refactored an AngularJS application.
- Managed two remote developers, defined coding guidelines, and approved pull requests.
- Provided advice on the implementation of Scrum within the company.
Software Consultant
The Stack Holder Company
- Defined the architecture and developed a scalable news monitoring application based on web crawling, content analysis, and entity extraction.
- Set up a deployment process on AWS, using Git push hooks.
- Defined and prioritized the product backlog with the product owner.
- Hired and managed remote freelancers to develop web scrapers.
Lead Front-end Developer
Kiffetescourses
- Refactored an AngularJS application.
- Made the application responsive to work on phones, tablets, and desktops.
- Implemented a back-office application in AngularJS from the ground up.
- Worked closely with the product owner to define and prioritize the backlog.
Full-stack Developer
Thingle
- Built a social platform inspired by Pinterest, with a focus on user collaboration.
- Used PhantomJS to improve the SEO of the single-page application.
- Integrated Google Maps to display location-based search results.
Technical Lead
MyCube
- Developed a content exchange platform with social features for this Singapore-based startup.
- Improved productivity and managed business expectations by implementing Scrum methodology within the organization.
- Managed three cross-functional teams of fifteen individuals, which included such tasks as running daily standup meetings, performing code reviews, and ensuring quality of delivery.
- Designed and implemented key framework components, including a persistence layer on top of Cassandra and an event infrastructure.
Software Architect
PROBTP
- Worked as a software architect on a new call center application used by 500 agents and processing over 20,000 phone calls per day for a French pension fund.
- Wrote technical specifications with UML.
- Provided expertise on OSGI.
- Built a technical infrastructure on top of OSGI by integrating frameworks to support clustering, hot deployment, client-server communication, and functional scalability.
- Deployed a build management infrastructure using Maven 2 and Hudson.
Software Engineer
ACOSS
- Designed and developed a messaging web application to facilitate the communication between employees located in two different offices for a tax collection agency in France.
- Provided expertise on Hibernate and Quartz to solve design issues on a clustered web app.
- Implemented Web Services using Axis2.
- Successfully overcame a scalability issue by setting up a load test infrastructure and optimizing SQL statements.
Software Engineer
AMADEUS
- Designed and developed automated non-regression test tools within the quality assurance department of a French travel software company.
- Developed a Java layer on top of the C++ central system communication API with JNI.
- Increased process efficiency by developing a tool to test back-end availability.
Software Engineer
Axemble
- Developed and tested a business process management web app.
- Wrote functional test plans and signed off releases.
- Performed load testing and tuned application server accordingly.
- Tested database compatibility.
- Provided second-level support for customers.
- Wrote how-to and code snippets for developer users.
Experience
Flight Display
https://github.com/ducret201/flight_display_demoLivepeak
This is a personal project, of which I performed 100% of the designing and programming.
AyStack
This is a personal project, of which I performed 100% of the designing and programming.
Skills
Languages
JavaScript, Java, Kotlin, CSS, XSLT, HTML, CSS3, Less, Python, CoffeeScript, HTML5, Sass, TypeScript
Frameworks
Redux, Spring, OSGi, Hibernate, Flutter, Svelte, Jersey, Jakarta Server Pages (JSP), Apache Struts, Apache Axis 2, Apache MINA, JNI, JUnit, AngularJS, Bootstrap, Django, Scrapy, Jasmine, React Native, Electron
Libraries/APIs
Node.js, RxJS, React, Java RMI, JTAPI, RequireJS, jQuery, Backbone.js, Jackson, Quartz, JMX, Natural Language Toolkit (NLTK), Stripe
Tools
Apache Maven, Eclipse IDE, Apache JMeter, Git, Eclipse RCP, Solr, IntelliJ, Jetty, Apache Tomcat, Continuum, CVS, Hudson, IBM Rational ClearCase, Visual SourceSafe, Grunt, Karma, Webpack, Gulp, Agora
Paradigms
Scrum, Test-driven Development (TDD), REST, Scalable Application, Requirements Analysis, Desktop App Development, B2B
Platforms
Google App Engine, Android, Amazon Web Services (AWS), Heroku, MacOS, Jakarta EE, Eclipse, JBoss, Oracle, OpenStack, Linux, Mobile, Visual Studio Code (VS Code)
Other
Architecture, HornetQ, Ajax, RMI, Avaya Software, Shell Scripting, WebLogic, Ant, BPM, OpenSTA, WiFi Integration, Software Design, Web Development, Full-stack, Leadership, Scalable Architecture, Video Streaming, Streaming, Front-end Development, User Interface (UI), Cloudflare
Storage
Elasticsearch, MongoDB, Cassandra, PostgreSQL, JBoss Cache, Microsoft SQL Server, MySQL, Redis, CouchDB, Cloud Firestore
Education
SCRUM Master Degree in Agile Methodologies
ODD-E - Singapore
Master's Degree in General Education, Software architecture, and Integration of Systems Specialty
EPF - Paris, France