Jean-Vincent

Kigali, Rwanda

Senior Software Engineer with 8+ years in full-stack development, building scalable apps, shared component libraries and frameworks that boost developer productivity. Proficient in React, Node, TypeScript, C#/.NET, PHP/Laravel, Flutter, DevOps and Cloud. Well versed in AI-assisted development with GitHub Copilot and Cursor, backed by tests and code review. Passionate about clean architecture.

Senior Software Engineer, BESTSELLER A/S

Nov 2023 — Present

<p>Built and maintained BESTSELLER’s Digital Media &amp; Marketing app, cutting page load time 30% with React. Added OpenTelemetry/Datadog metrics (25% performance gain) and a reusable Jest test foundation. Refactored core .NET services (40% faster APIs) and streamed asset updates via Kafka (80% less sync delay). Uses GitHub Copilot to speed up delivery, validating AI-generated code through tests and code review.</p><p><br></p>

ServiceNow Engineer, BESTSELLER A/S

Nov 2022 — Dec 2023

Implemented custom ServiceNow applications, utilizing Flow Designer, Service Catalog, SLAs, ACLs, and Mobile Agent, boosting automation by 40%. Collaborated Departments and business stakeholders to translate requirements into functional ServiceNow solutions, enhancing workflow efficiency by 25%. Developed UI Actions, Client Scripts, Business Rules, and Reports, including Scheduled Jobs and Email Integrations, improving system efficiency by 30%.

Senior Frontend Engineer, ALFATIER GmbH

Nov 2021 — Aug 2022

Led the development as an early-stage engineer, coordinated closely with UI/UX designer to deliver responsive, user-centric interfaces, boosting satisfaction by 30%. Engineered high-impact frontend features for the MVP, sustaining high-traffic during launch week, using a modular architecture with 100% test coverage.

Senior Software Engineer, CODE OF AFRICA

Jun 2021 — Aug 2022

Boosted SEO for the Code of Africa website, improving search rankings, and enhancing user engagement and brand recognition by 35%. Led cross-functional frontend teams, improving code quality by 40% through regular feedback and guiding successful project deliveries.

Full-Stack Software Engineer, RECONSTRUCTION

Jun 2021 — Nov 2021

Optimized .NET services by leveraging MassTransit for message handling and tuning Entity Framework queries, reducing latency by 35% and improving throughput under high-load scenarios.

Senior Software Engineer, EXUUS Ltd

May 2020 — Jun 2021

Spearheaded the frontend for SavePlus, a for-profit crowdfunding app, delivering high-quality code and a seamless user experience, improving user retention by 25%. Led code reviews and debugging efforts, ensuring stability and performance while driving 15% improvements through optimizations.

Full-Stack Associate Engineer, ANDELA Ltd

Mar 2019 — Apr 2020

Implemented memoization and virtualization techniques in component rendering, improving scroll performance in large datasets by 70%. Migrated a 15,000+ LOC legacy JavaScript codebase to TypeScript.

Full-Stack PHP/MEAN Engineer, AKORION Ltd

Aug 2019 — Jan 2020

Hardened authentication flows with proper auth-token management, reducing session-related vulnerabilities by 80%. Optimized CouchBase data storage, improving database performance and reliability.

Freelance Engineer, JKSS CONNECT

Sep 2017 — Feb 2019

Innovated data synchronization, ensuring smooth accessibility on low-speed connections and reducing load times by 40%. Integrated a QR code-based payment mechanism.


Bachelor of Business Information Technology — University of Tourism, Technology and Business Studies (UTB), Kigali

Jan 2016 — Jun 2018

Studied business information technology.

Bachelor's Degree — University of Tourism, Technology and Business Studies (UTB), Kigali

Jan 2016 — Jun 2018

Bachelor in Computer Science — University of Kinshasa, DRC

Sep 2011 — Dec 2014

Studied computer science.

Bachelor's Degree — University of Kinshasa, DRC

Sep 2011 — Dec 2014

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