Yoweli Kachala

Contract engagements and open-source product development focused on multi-tenant SaaS, booking platforms, and high-performance systems.

Contract engagements and open-source product development.

Khaya Tours — PHP / Laravel / MySQL / PayPal
Full platform: tour listings, online booking pipeline, PayPal processing, admin backend. Ongoing engagement; reference available on request.

BookFlow / Calendrax — PHP / Laravel / PostgreSQL / Paystack
25+ REST API endpoints: bookings, payments, webhooks, promotions, loyalty, tenant management.

Worked as 1-grid at 6 mos.

Designed multi-tenant backend services with strict data isolation and high availability. Rescued 3 stalled module developments and completed resolution within 1 year.

Global multi-tenant hotel property management SaaS.

Unblocked 3 long-standing module developments — each previously attempted by multiple engineers — within 12 months, directly clearing delayed product roadmap items.

Designed and delivered multi-tenant backend services with strict data isolation, high availability, and zero cross-tenant leakage.

Architected scalable APIs enabling international

Engineered high-performance backend services for LG operations, managing complex logistics, inventory, and financial workflows.

Enterprise logistics, inventory, and financial systems.

Maintained 100% data consistency across all operational and financial system integrations throughout the engagement.

Delivered high-performance backend services for enterprise logistics, inventory management, and financial reporting workflows.

Created reusable architectural blueprints that reduced ramp-up time for subsequent modules.

Built high-performance backend for enterprise logistics, inventory, and financial workflows. Delivered seamless integrations across operational and financial systems with 100% data consistency.

Architected mission-critical backend services managing the full subscription lifecycle, including complex recurring billing logic and automated renewal workflows.

Architected subscription and recurring billing systems supporting high-volume financial operations. Ensured 100% transactional consistency and standardized CI/CD pipelines to improve release speed and production stability.

Designed backend for national pharmacy and healthcare systems. Built secure, compliant data synchronization pipelines with a focus on high data integrity and regulatory compliance.

Designed and implemented backend architecture for a large-scale pharmacy system with seamless integration across clinical platforms.

Extended WHMCS billing with custom modules to automate financial workflows. Integrated secure payment gateways with compliance and reliability to reduce billing errors and operational overhead.

Architected real-time vehicle tracking and fleet backend services. Overhauled CI/CD pipelines, reducing deployment failures by 70%.

Real-time public transport and fleet intelligence platform.

70% reduction in deployment failures after overhauling CI/CD pipelines and introducing environment parity between staging and production.

Architected real-time vehicle tracking and fleet management backend handling live GPS telemetry at scale.

Significantly improved CI/CD pipelines, decreasing deployment failures by 70% across staging, QA, and production.

Delivered 7+ enterprise-scale backend systems across telecommunications and public sectors for Samsung, MTN, Cell C, and UK NHS.

Delivered 7+ enterprise-scale backend systems across telecom and public sectors, including UK NHS. Led architecture for high-compliance systems for tier-1 clients such as Samsung, MTN, and Cell C.

Re-engineered processing logic to reduce message delivery latency by 88% (from 3 hours to under 20 minutes).

Re-architected a high-throughput messaging platform, reducing latency by 88%. Automated failure handling to cut operational costs by 25%.

Delivered a 5-year stalled national tender processing system within 12 months as the sole architect and lead developer.

Developed and deployed national-scale payroll, HR, and B2B platforms for the Government of Malawi.

Rescued a stalled tender processing system (5-year delay) and produced a functional MVP in less than 12 months. Designed and deployed national-scale payroll, HR, and B2B platforms for the Government of Malawi.

Rescued a 5-year stalled national tender processing system, delivering functional demos within 12 months as sole architect.

Issued Nov 2005

Studied Management Information Systems at the University of Malawi (Polytechnic).

Advanced Diploma in Management Information Systems

Completed a BTech in Information Technology at Cape Peninsula University of Technology.

Issued May 2026

Issued Jan 2019