Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Brian Opicho Ngeywo, a Senior Flutter Engineer based in Nairobi, Kenya. I specialize in building robust mobile apps (Flutter/Dart) with offline-first UX, real-time data, and scalable architectures. I enjoy partnering with product and QA teams to deliver high-quality software on CI/CD pipelines and love mentoring junior developers. I’ve led mobile development for fintech and logistics apps, integrating secure payments (Stripe, PesaPal, M-Pesa) and mapping with Google Maps SDK, while optimizing performance and reliability. In my free time I enjoy exploring new Flutter patterns, learning from the community, and designing clean architectures that stand the test of real-world usage.…Hi, I’m Brian Opicho Ngeywo, a Senior Flutter Engineer based in Nairobi, Kenya. I specialize in building robust mobile apps (Flutter/Dart) with offline-first UX, real-time data, and scalable architectures. I enjoy partnering with product and QA teams to deliver high-quality software on CI/CD pipelines and love mentoring junior developers. I’ve led mobile development for fintech and logistics apps, integrating secure payments (Stripe, PesaPal, M-Pesa) and mapping with Google Maps SDK, while optimizing performance and reliability. In my free time I enjoy exploring new Flutter patterns, learning from the community, and designing clean architectures that stand the test of real-world usage.

Brian Opicho Ngeywo

Full Stack Developer, App Developer, Developer, +2





Hi, I’m Brian Opicho Ngeywo, a Senior Flutter Engineer based in Nairobi, Kenya. I specialize in building robust mobile apps (Flutter/Dart) with offline-first UX, real-time data, and scalable architectures. I enjoy partnering with product and QA teams to deliver high-quality software on CI/CD pipelines and love mentoring junior developers. I’ve led mobile development for fintech and logistics apps, integrating secure payments (Stripe, PesaPal, M-Pesa) and mapping with Google Maps SDK, while optimizing performance and reliability. In my free time I enjoy exploring new Flutter patterns, learning from the community, and designing clean architectures that stand the test of real-world usage.…Hi, I’m Brian Opicho Ngeywo, a Senior Flutter Engineer based in Nairobi, Kenya. I specialize in building robust mobile apps (Flutter/Dart) with offline-first UX, real-time data, and scalable architectures. I enjoy partnering with product and QA teams to deliver high-quality software on CI/CD pipelines and love mentoring junior developers. I’ve led mobile development for fintech and logistics apps, integrating secure payments (Stripe, PesaPal, M-Pesa) and mapping with Google Maps SDK, while optimizing performance and reliability. In my free time I enjoy exploring new Flutter patterns, learning from the community, and designing clean architectures that stand the test of real-world usage.

Available to hire

Hi, I’m Brian Opicho Ngeywo, a Senior Flutter Engineer based in Nairobi, Kenya. I specialize in building robust mobile apps (Flutter/Dart) with offline-first UX, real-time data, and scalable architectures. I enjoy partnering with product and QA teams to deliver high-quality software on CI/CD pipelines and love mentoring junior developers.

I’ve led mobile development for fintech and logistics apps, integrating secure payments (Stripe, PesaPal, M-Pesa) and mapping with Google Maps SDK, while optimizing performance and reliability. In my free time I enjoy exploring new Flutter patterns, learning from the community, and designing clean architectures that stand the test of real-world usage.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Software Engineer at Kasarani Gas Center (Gas Xpress)

February 1, 2025 - October 6, 2025

Architected and shipped Gas Xpress LPG delivery app with courier geolocation, payments (Stripe, PesaPal), and Firebase backend. Built offline-first flows (caching + background sync) to support order completion in low connectivity regions. Optimized navigation & routing (Google Maps SDK) to improve delivery distances and ETA accuracy. Established CI/CD pipelines and automated tests, reducing release time and improving code quality. Mentored 2 junior developers on Clean Architecture and SOLID practices.

Senior Mobile Engineer at Director Technologies

March 1, 2025 - Present

Led mobile development of Insta Cash Swaziland (fintech app) with secure payments, real-time transfers, and offline-first UX. Integrated payment gateways (M-Pesa, PesaPal, Stripe) with PCI-compliant flows. Implemented Firebase Analytics and Crashlytics, improving app stability and retention. Partnered with product and QA teams to accelerate release cadence using CI/CD (GitHub Actions + Fastlane). Mentored 2 junior developers on Clean Architecture and SOLID practices.

Senior Mobile Engineer at Kasarani Gas Centre (Gas Xpress)

February 1, 2025 - October 6, 2025

Architected and shipped Gas Xpress LP G delivery app with courier geolocation, payments (Stripe, PesaPal) and Firebase backend. Built offline-first flows (caching + background sync) to support order completion in low-connectivity regions. Optimized navigation and routing (Google Maps SDK) to improve delivery distances and ETA accuracy. Established CI/CD pipelines and automated tests, reducing release time and improving code quality. Mentored 2 junior devs on Clean Architecture and SOLID practices.