Yoweli K.
Senior Backend Engineer
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Yoweli K. is a Senior Backend Engineer and Systems Architect with over 15 years delivering high-performance backend development and architectural leadership for enterprises across Fintech, HealthTech, Government, telecommunications, SaaS, and logistics. Based in Cape Town, he has architected multi-tenant systems, transactional workflows, and scalable REST APIs for leading organizations such as RoomRaccoon, Emedis, FlexClub, and the City of Cape Town. Yoweli’s expertise includes rescuing and accelerating mission-critical systems, developing complex subscription billing and payment solutions, and optimizing cloud-based platforms using AWS, Docker, and CI/CD pipelines. He has demonstrated measurable business impact—reducing latency by 88%, expanding system capacity for 10k+ concurrent users, and automating financial workflows in high-compliance industries. His academic background spans Cape Peninsula University of Technology and University of Malawi, complemented by certifications in networking and PHP.
Experience
Senior Software Engineer (Native PHP)
RoomRaccoon · 2024 — 2025Designed backend services that support multiple tenants while ensuring strict data isolation and availability. Optimised transactional workflows to enhance system throughput. Developed scalable APIs to facilitate international growth and third-party integration. Revived three stalled module developments previously assigned to multiple developers over the years in under a year.Senior Backend Engineer
Emedis · 2022 — 2023Constructed a high-performance backend system for enterprise logistics, inventory, and financial operations. Achieved seamless integration across operational and financial systems, ensuring data consistency. Developed reusable architectural blueprints to expedite future system development.Senior Backend Developer
FlexClub · 2021 — 2022Designed systems for subscription and recurring billing to manage high-volume financial transactions. Maintained 100% consistency in the financial systems. Standardised CI/CD pipelines to enhance release speed and ensure production stability.Senior Open Source Backend Engineer
City of Cape Town · 2020 — 2021Engineered a backend system for national pharmacy and healthcare services. Developed secure data synchronisation pipelines while maintaining compliance. Ensured high integrity of data along with adherence to regulatory standards.Senior PHP Developer
1-Grid · 2019 — 2020Enhanced the WHMCS billing platform by adding custom modules that automated various financial workflows. Integrated secure payment gateways that prioritised compliance and reliability. Minimized billing inaccuracies and associated operational overhead.Senior Backend & Frontend Engineer
GoMetro · 2019 — 2019Architected backend services for real-time vehicle tracking and fleet management. Revamped CI/CD pipelines, resulting in a reduction of deployment failures by 70%.Senior Enterprise Systems Developer
Double Eye · 2016 — 2019Delivered over seven enterprise-scale backend systems for telecom and public sector clients including the UK NHS. Spearheaded architecture for high-compliance systems tailored for tier-1 clients such as Samsung, MTN, and Cell C.Lead Developer (Systems Architect & Full-Stack Engineer)
SchoolAlert · 2012 — 2015Re-architected a messaging platform designed for high throughput, achieving a significant reduction in latency. Automated failure handling processes, which led to a cut in operational costs.Early Career – Backend & Systems Engineering
Company not specified · 2006 — 2012Revitalised a tender processing system that had been stalled for five years, delivering a functional MVP within 12 months. Designed and deployed large-scale national payroll, HR, and B2B platforms for the Government of Malawi.
Skills & Expertise
Education
- BTech in Information TechnologyCape Peninsula University of Technology
- Management Information SystemsUniversity of Malawi (Polytechnic)
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