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Tom Dejardin

@tomdejardin

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Software engineer at Orness who developed a TOSCA compiler, raising language coverage from 12% to 92%.

France

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At Orness, I developed a JavaScript compiler for a TOSCA Infrastructure as Code language, covering syntax analysis, AST generation, types, and error handling. This raised language coverage from 12% to 92%.

Earlier at Orness, I contributed to a cloud orchestration application, developing its Vue.js and Quasar frontend and a Terraform parser using ANTLR. I added automated tests with Jest and Cypress and made 14 open-source contributions.

I also developed a Node.js wrapper with a web interface for SignServer. In personal and academic projects, I built a real-time multiplayer music game with React Native, Firebase, and the Spotify API, and designed GitLab CI/CD pipelines and Docker images for a React application.

Experience

Work history, roles, and key accomplishments

Software Engineer Apprentice

Orness

Nov 2023 - Sep 2025 (1 year 10 months)

Developed the compiler for an Infrastructure as Code language (TOSCA) in JavaScript, including syntax analysis, AST generation, and type and error handling, raising language coverage from 12% to 92%.

JavaScript Compiler Design Principles AST Type Handling Error Handling Tricentis Tosca

Full-Stack Developer Apprentice

Orness

Nov 2022 - Sep 2023 (10 months)

Full-stack development of a cloud orchestration application with frontend (Vue.js, Quasar) and backend (Terraform parser via ANTLR), including automated testing and agile collaboration.

Vue.Js Quasar Framework Terraform Antlr Jest Cypress Agile Scrum Kanban Open Source

Backend Developer Intern

Orness

Apr 2022 - Jun 2022 (2 months)

Developed a wrapper for the SignServer digital signature software with a web interface using JavaScript and Node.js.

JavaScript NodeJS SignServer Web Development

Education

Degrees, certifications, and relevant coursework

UPEC

Master's, Systems Design and Cybersecurity

2023 - 2025

Master's in Systems Design and Cybersecurity from UPEC, covering Python, Java, Rust, C++, OCaml, AI, Big Data, Cloud, and DevOps.

UEVE

Professional Bachelor's, IT and Web Applications

2022 - 2023

Professional Bachelor's in IT and Web Applications from UEVE, covering JavaScript, PHP, SQL, WordPress, Bash, Linux and Windows administration, and virtualization.