Looking for a job

Waweru Kamau

@wawerukamau

Senior Software Engineer at FaidaPOS, building a multi-tenant retail POS platform with M-Pesa payments and data-rich reporting.

Kenya

Message

At FaidaPOS, I designed and built a multi-tenant point-of-sale and inventory platform for retail businesses. It supports sales, inventory, purchasing, payments, reporting, staff permissions, and multi-store workflows.

I integrated M-Pesa STK Push into checkout and customer-credit flows, including split payments. I also built reporting dashboards and designed responsive mobile layouts for complex desktop tables.

At Discovery Mountain, I optimized React Native rendering and application performance, reducing UI lag and improving runtime performance by 40%. I also designed tablet and iPad experiences and wrote tests with Jest, React Testing Library, and Playwright.

At Aily Labs GmbH, I led the rebuild of a React Native application into a data-driven, multi-tenant SaaS platform, reducing client onboarding time by 80%. Earlier, at Quantrica, I refactored a legacy React application, improving page loading speed by 60% and reducing API calls by 50%.

Experience

Work history, roles, and key accomplishments

Current

Founder & Lead Engineer

Current

FaidaPOS

Jan 2026 - Present (9 months)

Designed and built a multi-tenant point-of-sale and inventory platform for retail businesses, covering sales, inventory, purchasing, payments, reporting, staff permissions, and multi-store workflows. Integrated M-Pesa STK Push mobile-money payments and built data-rich reporting dashboards.

React Native Expo React TypeScript NodeJS tRPC Prisma PostgreSQL M Pesa STK Push Jest React Testing Library Playwright Nginx WireGuard Ubuntu

Current

Founder / Full Stack Engineer

Current

MyGymDash

Jan 2024 - Present (2 years 9 months)

Designed and built a full-stack, multi-tenant SaaS gym management platform supporting memberships, bookings, training schedules, payments, and operational workflows. Implemented GraphQL APIs and data access with Apollo GraphQL, Prisma, and PostgreSQL.

Expo Apollo GraphQL Prisma PostgreSQL Supabase GraphQL Authentication File Storage

Mobile Engineer

Discovery Mountain

Jan 2025 - Jan 2026 (1 year)

Optimized React Native rendering and application performance, reducing UI lag and improving runtime performance by 40%. Designed responsive tablet and iPad experiences and improved cross-platform UX and reliability.

React Native GraphQL Jest React Testing Library Playwright Performance Optimization Cross Platform Development

Senior Software Engineer

Aily Labs GmbH

Jan 2021 - Jan 2023 (2 years)

Led the rebuild of a React Native application into a data-driven, multi-tenant SaaS platform, reducing client onboarding time by 80%. Implemented GraphQL-based data flows to reduce over-fetching and improve application performance.

React Native GraphQL Datadog Jest React Testing Library Playwright Performance Monitoring

Front End Software Engineer

Quantrica

Jan 2019 - Jan 2020 (1 year)

Refactored a legacy React application, improving page loading speed by 60% while improving code clarity and maintainability. Optimized data visualizations and frontend data fetching, reducing API calls by 50%.

React Storybook Sentry Performance Optimization Data Visualization Reusable Components