Sergei Sergeev
SharePoint & Microsoft 365 Developer, Architect And Consultant at Self-employed
Poland
Summary
👤
Senior🎓
Top SchoolSergei Sergeev is a Microsoft 365 and SharePoint developer, architect, and consultant with 11+ years of hands-on experience and a Microsoft MVP award since 2017. Based in Poland and working independently since 2017, he blends deep .NET back-end expertise with modern front-end skills (TypeScript, Vue, Angular, Node.js) to deliver practical Microsoft 365 solutions. He’s an active open-source contributor to high-profile PnP projects—improving security extensions, webhooks, and SPFx samples—which demonstrates both low-level platform knowledge and developer ergonomics focus. Sergei’s work spans security, build/tooling improvements, and internationalization, showing attention to reliability and global developer experience. His background includes enterprise SharePoint roles at iTechArt and EPAM and a computer science degree from Belaruski Dzjaržauny Universitet, giving him solid foundations in architecture and large-scale collaboration.
11 years of coding experience
6 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Belaruski Dzjaržauny Universitet Informatyki i Radyjoelektroniki
Russian, English, Russian, Polish
Stackoverflow
2,053reputation
225kreached
8answers
55questions
Github Skills (35)
javascript10
sharepoint-framework10
testing10
net10
typescript10
dotnet10
sharepoint10
sc10
webpack10
netframework10
asp-net10
scs10
front-end-development10
vue10
webpacker10
Programming languages (11)
Github contributions (5)
pnp/PnP-Sites-Core
Aug 2015 - May 2019
Microsoft 365 Dev PnP Core component (.NET) targeted for increasing developer productivity with CSOM based solutions.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:14 commits, 14 PRs, 27 comments in 3 years 9 months
Contributions summary:Sergei primarily focused on enhancing the security features within the `pnp-sites-core` repository. They improved and refactored existing security extension methods, enabling them to be used on various objects. The user also addressed an issue regarding the assignment of the same permission level multiple times. Furthermore, they updated the code to fix a collection loading issue when object properties are instantiated.
dotnetcore-componentpnpdevproductivity
pnp/sp-dev-fx-webparts
Feb 2017 - Apr 2020
SharePoint Framework web part, Teams tab, personal app, app page samples
Role in this project:Front-end Developer
Front-end DeveloperContributions:9 commits, 9 PRs, 14 comments in 3 years 3 months
Contributions summary:Sergei primarily contributed to front-end development within the SharePoint Framework web parts repository. Their work focused on integrating and updating Vue.js and Angular2 samples, upgrading them to newer versions and fixing build issues. They added and modified components, and adjusted build configurations, demonstrating a strong understanding of the front-end build process within the SharePoint Framework environment. The user also integrated CSS-in-JS using TypeStyle and PnPjs with MS Graph sample.
reactsharepointsharepoint-workbenchsharepoint-frameworkknockoutjs
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