Kelvin N.
Mid-Level .NET Developer
Open to offersNew to PlatformPortfolios
About
Kelvin N. is a Business Information Technology graduate based in Nairobi with hands-on experience across software development, data annotation, IT support, and customer service. As a .NET Developer and Data Annotation Specialist, Kelvin has handled end-to-end web application projects using C#, ASP.NET Core MVC, and SQL Server, and played a key role in preparing and labeling image and text datasets for AI and computer vision projects—including work with YOLO object detection models and platforms like Labelbox. In the SaaS sector, Kelvin has developed and customized business solutions as a Zoho Software Developer, integrating systems via REST APIs and configuring business workflows. Earlier roles at Samasource, Zuku, and CCI Kenya enabled Kelvin to gain significant expertise in data labeling, IT troubleshooting, networking, and high-volume customer support within the AI, telecom, and customer service industries.
Experience
Zoho Software Developer
Freelance / Contract · 2024 — 2025Developed and tailored business applications via Zoho Creator and utilized Deluge scripting for custom functionalities. Configured various Zoho CRM modules by establishing workflows, automation rules, and defining user roles. Integrated Zoho applications with external systems using REST APIs, and created detailed reports and dashboards to facilitate data-driven decision-making. Offered system support, enhancements, and training for users.Ticketing & IT Support Assistant
Care Business Center, JKIA · 2024 — 2024Managed ticketing operations, making reservations and organizing customer travel arrangements. Provided technical support addressing system, network, and software issues while maintaining communication between the ticketing and technical departments. Enhanced workflow efficiency by implementing system updates and assisting staff.Data Agent
Samasource · 2023 — 2024Executed extensive data annotation, labeling, and verification tasks with precision. Adhered to strict project guidelines to achieve quality benchmarks. Conducted quality checks and error reviews to enhance dataset integrity while collaborating with team members to ensure timely project completions. Offered technical support to troubleshoot software or hardware-related challenges.Technician
Zuku · 2022 — 2023Installed and maintained fiber optic and network infrastructure, diagnosing and resolving issues related to connectivity, speed, and hardware. Delivered on-site technical assistance, which contributed to improving customer satisfaction.Sales Agent
Zuku · 2022 — 2022Assisted clients in selecting and purchasing various products and services while managing customer inquiries and complaints in a professional manner. Achieved and often surpassed monthly sales targets.Customer Service Representative
CCI Kenya · 2020 — 2020Delivered customer support through phone and email channels, promptly resolving client queries in a professional manner. Logged and tracked interactions using CRM systems while contributing to the enhancement of customer satisfaction..NET Developer & Data Annotation Specialist
Freelance / ProjectsExecuted data annotation and labeling for text and image datasets according to project specifications. Ensured high accuracy and consistency by reviewing, validating, and correcting annotated data. Developed web applications utilizing ASP.NET Core MVC, C#, and SQL Server. Optimized database operations and implemented APIs and authentication mechanisms. Conducted AI data annotation tasks for machine learning and computer vision initiatives, employing bounding boxes and segmentation techniques. Worked with YOLO object detection models, preparing datasets for training and evaluations. Contributed to LLM training efforts through response evaluation and prompt labeling. Engaged in image and video annotation projects to create quality datasets usable for AI model development, familiarizing with platforms such as Labelbox.
Skills & Expertise
Education
- Kenya Certificate of Secondary Education (KCSE)Koelel High School · — — 2018
- Kenya Certificate of Primary Education (KCPE)Michinda Boarding School · — — 2014
- Bachelor of Business Information Technology (BBIT)Technical University of Kenya
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