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

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.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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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.

Education

BSc. Software Engineering at University of Eastern Africa, Baraton
September 1, 2017 - August 1, 2022
BSc Software Engineering at University of Eastern Africa, Baraton
September 1, 2017 - August 31, 2022

Qualifications

Microservices Foundations Professional Certificate
January 1, 2024 - October 6, 2025
API Design in Node.js
January 1, 2024 - October 6, 2025
Cross-Platform Mobile Apps with Flutter
January 1, 2023 - October 6, 2025
Sustainable Software Architecture
January 1, 2023 - October 6, 2025
Node.js API Design
January 1, 2023 - October 6, 2025
Microservices Foundations Professional Certificate
January 1, 2024 - October 6, 2025
API Design in Node.js
January 1, 2024 - October 6, 2025
Cross-Platform Mobile Apps with Flutter
January 1, 2023 - October 6, 2025
Sustainable Software Architecture
January 1, 2023 - October 6, 2025
Node.js API Design
January 1, 2023 - October 6, 2025

Industry Experience

Software & Internet, Financial Services, Professional Services, Transportation & Logistics, Media & Entertainment