Thomas Sim
Full-stack Engineer | React, TypeScript, Node
Salary / Daily rate
Paris, France
Freelance
Can come onsite
Skills
Languages
About me
Intro
Full-Stack Software Engineer with a frontend expertise (React, TypeScript, Next.js, Node.js). With nearly 10 years of experience across consulting and product engineering, my roles have ranged from frontend-focused positions to full-stack ones. I care about delivering pixel-perfect UIs while writing clean, maintainable code that supports long-term scalability. Product-oriented at heart, I stay involved beyond the code and enjoy working closely with product and design. Feel free to reach out!
Work experience
Lead Frontend Engineer
Diffusely
May 2022 - Nov 2025
3 years 7 months
Paris, France
Lead Frontend Engineer for the development of ProperShot, a web and mobile platform dedicated to capturing, editing, and enhancing real estate visuals using AI. The product was later acquired by NodalView, a leader in the space. • React / TypeScript, Next.js • Integration of generative AI microservices for image and text creation • Implementation of CI/CD pipelines and end-to-end testing (Playwright) • Led and mentored frontend developers • Collaborated closely with product and design teams
Accenture
Feb 2015 - Sep 2022
7 years 8 months
Paris, France
Full-stack Software Engineer
Jul 2019 - Sep 2022
3 years 3 months
Paris, France
--- Total E&P UK Digital & Data --- • Development of an internal monitoring and data visualization application enabling engineers to make faster, data-driven decisions on well interventions • Stack : BE : API REST (NestJs), TypeScript FE : React, TypeScript Cloud Azure, db NoSQL (Cosmos DB) --- Total Digital Factory --- • Development of an internal monitoring and data visualization application enabling engineers to make faster, data-driven decisions on well interventions • Stack : BE : API GraphQL (Apollo), TypeScript FE : React, TypeScript Cloud Azure, db PostgreSQL --- Cirruseo part of Accenture --- • Backend development (Java 8) for a Google App Engine application. • Design and implementation of a full auction house management system (internal IS, live bid, timed auctions, selfcare website). • Stack : GCP (App Engine) – Java 8 (Spring Boot) – VueJS – PostgreSQL - ElasticSearch
Business Analyst & Team Lead
Feb 2015 - Jul 2019
4 years 6 months
Paris, France
Implemented and adapted the subscription/management system within Allianz Business System ERP, led data migration projects for millions of home insurance contracts, and coordinated with international teams.
Full Stack Software Engineer
Worldline by Atos
Jan 2014 - Jun 2014
6 months
Région de Lille, France
Web application development, creation of a portal designed to monitor the state of the Visual Voice Mail service. This service is provided for SFR, which is one of the 4 biggest French telecommunications companies. Stack : Java, MySQL, Perl, JavaScript
Education
Université de Technologie de Troyes
Master of Engineering, Information Systems & IT Management
2010 - 2015
5 years 1 month
Licenses & certifications
Microsoft Certified: Azure Fundamentals (AZ-900)
Issued: –
Google Professional Cloud Architect
Issued: May 2020
Professional Scrum Master I
Issued: May 2020