Nicholas Tessier
Software Engineer at Bentley Systems
Philadelphia, Pennsylvania, United States
Summary
👤
Senior🎓
Top SchoolNicholas Tessier is a software engineer with nine years of hands-on experience, currently building backend and API features at Bentley Systems from Philadelphia. He has a strong foundation in Java and C++, contributed meaningful authentication and caching improvements to the widely used iTwin.js monorepo, and reorganized client-side token handling to simplify extension and integration. A Stony Brook Computer Science graduate with a 3.90 GPA, he pairs academic rigor with practical product impact—having converted research prototypes into plugins and integrated 3D hazard visualizations with Microsoft Graph and SharePoint. Comfortable leading and mentoring (he managed dozens of student consultants at SBU), Nicholas is detail-oriented and even treats typing as a hobby, an unusual habit that underscores his efficiency and focus when delivering robust developer-facing systems.
9 years of coding experience
2 years of employment as a software developer
High School, High School at Arlington High SchoolBachelor’s Degree, Computer Science, 3.90, Bachelor’s Degree, Computer Science, 3.90 at Stony Brook University
English
Github Skills (12)
user-authentication10
authentication10
typescript10
typescripts10
backend10
typescript-types10
itween10
api-design9
javascript9
api9
apim9
dependency-management9
Programming languages (3)
Github contributions (5)
iTwin/itwinjs-core
Jul 2020 - Jan 2023
Monorepo for iTwin.js Library
Role in this project:
Back-end Developer & API Developer
Back-end Developer & API DeveloperContributions:318 reviews, 128 commits, 196 PRs in 2 years 6 months
Contributions summary:Nicholas focused on modifying the `AccessToken` class, a core component for authentication, to facilitate easier extension and integration with the `iModelApp` flow. They implemented a class decorator (`TokenPrefix`) to map token prefixes to constructors, improving token type generation during authentication. Additionally, they moved the `BasicAccessToken` class to the `itwin-client` package, which indicates code reorganization and dependency management. The user also made several updates to various RPC operations and added caching to optimize the performance.
monorepojs-libraryrushwebgljavascript
iTwin/imodel-transformer
May 2023 - Jan 2025
API for exporting an iModel's parts and also importing them into another iModel
Contributions:223 reviews, 62 PRs, 257 pushes in 1 year 9 months
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