Nahimana Theoneste
@nahimanatheoneste
Full-Stack Developer and Microsoft 365 Technical Lead delivering scalable solutions.
What I'm looking for
I am a versatile Full-Stack Software Developer and Microsoft 365 Technical Lead with hands-on experience building web and cross-platform mobile applications using Laravel, React, and Flutter. I combine practical development skills with cloud knowledge across AWS, Azure, and Google Cloud to deliver end-to-end solutions.
In technical support and leadership roles, I developed a customer-centric troubleshooting methodology that achieved 80% faster issue resolution and maintained a 100% customer satisfaction rate. I diagnose and resolve complex Microsoft 365 issues across Exchange Online, SharePoint, Teams, and Azure AD, and I build automation to improve operational efficiency.
I have modernized legacy systems, refactored codebases, and integrated payment gateways for secure transactions, resulting in reduced operating costs and improved functionality. I also engineered automated diagnostics for sensor data processing using Python to enhance operational accuracy.
I mentor junior engineers and foster cross-functional collaboration, having guided five junior engineers to achieve faster issue resolution and stronger team capabilities. I am committed to delivering reliable, maintainable software and strong technical leadership.
Experience
Work history, roles, and key accomplishments
Microsoft 365 Technical Lead
Tek-Experts Rwanda
Apr 2024 - Present (1 year 10 months)
Led Microsoft 365 technical support operations, implemented a customer-centric troubleshooting methodology that accelerated issue resolution by 80% and maintained 100% customer satisfaction while mentoring junior engineers.
Microsoft 365 Technical Support Engineer
Tek-Experts Rwanda
Apr 2023 - Mar 2024 (11 months)
Provided escalated Microsoft 365 support to enterprise and institutional clients, reproduced complex issues in lab environments and developed PowerShell automation to streamline troubleshooting.
Software Developer
Electrix Ltd
Feb 2021 - Apr 2023 (2 years 2 months)
Designed and developed web and cross-platform mobile applications using Laravel and Flutter, integrated payment gateways, modernized legacy codebases, and implemented AWS-hosted, RESTful APIs to improve functionality and reduce operating costs.
Education
Degrees, certifications, and relevant coursework
ULK Polytechnic Institute
Advanced Diploma, Electronics and Telecommunication Technology
2015 - 2018
Completed an Advanced Diploma in Electronics and Telecommunication Technology focusing on practical and theoretical aspects of electronics and telecommunications.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
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