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

I'm a Fullstack Engineer with a strong focus on building intuitive, high-performing user interfaces for web and mobile using React.js, Next.js, and React Native. I'm passionate about crafting seamless frontend experiences that feel native and engaging, whether on the browser or mobile devices. On the backend, I work with Node.js and NestJS to build scalable APIs, implement real-time features, and support complex app logic. My experience spans deploying cross-platform apps, integrating third-party services, and contributing to open-source projects that make a real impact. I thrive in environments where product thinking meets strong engineering, and I'm fluent in both English and French, ready to collaborate with diverse teams and ship meaningful software.…I'm a Fullstack Engineer with a strong focus on building intuitive, high-performing user interfaces for web and mobile using React.js, Next.js, and React Native. I'm passionate about crafting seamless frontend experiences that feel native and engaging, whether on the browser or mobile devices. On the backend, I work with Node.js and NestJS to build scalable APIs, implement real-time features, and support complex app logic. My experience spans deploying cross-platform apps, integrating third-party services, and contributing to open-source projects that make a real impact. I thrive in environments where product thinking meets strong engineering, and I'm fluent in both English and French, ready to collaborate with diverse teams and ship meaningful software.

Yaya Mamoudou S

Full Stack Developer, Back-End Developer, Web Developer, +3





I'm a Fullstack Engineer with a strong focus on building intuitive, high-performing user interfaces for web and mobile using React.js, Next.js, and React Native. I'm passionate about crafting seamless frontend experiences that feel native and engaging, whether on the browser or mobile devices. On the backend, I work with Node.js and NestJS to build scalable APIs, implement real-time features, and support complex app logic. My experience spans deploying cross-platform apps, integrating third-party services, and contributing to open-source projects that make a real impact. I thrive in environments where product thinking meets strong engineering, and I'm fluent in both English and French, ready to collaborate with diverse teams and ship meaningful software.…I'm a Fullstack Engineer with a strong focus on building intuitive, high-performing user interfaces for web and mobile using React.js, Next.js, and React Native. I'm passionate about crafting seamless frontend experiences that feel native and engaging, whether on the browser or mobile devices. On the backend, I work with Node.js and NestJS to build scalable APIs, implement real-time features, and support complex app logic. My experience spans deploying cross-platform apps, integrating third-party services, and contributing to open-source projects that make a real impact. I thrive in environments where product thinking meets strong engineering, and I'm fluent in both English and French, ready to collaborate with diverse teams and ship meaningful software.

Available to hire

I’m a Fullstack Engineer with a strong focus on building intuitive, high-performing user interfaces for web and mobile using React.js, Next.js, and React Native. I’m passionate about crafting seamless frontend experiences that feel native and engaging, whether on the browser or mobile devices.

On the backend, I work with Node.js and NestJS to build scalable APIs, implement real-time features, and support complex app logic. My experience spans deploying cross-platform apps, integrating third-party services, and contributing to open-source projects that make a real impact. I thrive in environments where product thinking meets strong engineering, and I’m fluent in both English and French, ready to collaborate with diverse teams and ship meaningful software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

French

Fluent

English

Fluent

Work Experience

Senior Software Engineer at RecreateApp

September 1, 2025 - October 10, 2025

Led the development of a high-performance AI-powered React Native app (iOS & Android) delivering personalized side hustle plans, real-time insights, and 24/7 guidance. Engineered a NestJS backend with Claude AI integration and Server-Sent Events for dynamic, interactive features like plan comparisons and in-app messaging. Orchestrated end-to-end monetization with RevenueCat, implementing subscription models, premium features, and deploying the app to both App Store and Google Play.

Software Engineer at Bridge Labs

February 1, 2025 - October 10, 2025

Transformed Figma designs into production-ready Next.js web platform connecting African developers with global opportunities. Built interactive employer dashboards and candidate features, integrating the Devmatch API for automated technical assessments and a video-based soft skills quiz module. Ensured a scalable, high-performance architecture using TypeScript, Tailwind CSS, Directus CMS, and managed complex state & async flows with Zustand and React Query.

Software Engineer at Nkwa

January 31, 2025 - October 10, 2025

Built a robust NestJS/MySQL payment system and a React Native “Save to Pay Later” feature, enabling seamless recurring transactions and improving financial discipline. Implemented a gamified points system and leaderboard, driving engagement and retention for 70,000+ users while optimizing cross-platform performance. Engineered a web-based financial reconciliation tool to ensure transaction accuracy, detect anomalies, and support compliance, contributing to UI design and growth strategy.

Software Engineer at SnapCar Rentals

October 1, 2024 - October 10, 2025

Developed a full-stack Next.js/MongoDB platform with end-to-end type safety, enabling scalable, secure car rental operations. Engineered core features including authentication, car listings, bookings, and dynamic dashboards using tRPC and Prisma ORM. Designed protected routes, booking validations, and admin tools for secure, smooth user experiences, while delivering a responsive, polished UI with Tailwind CSS and Next-UI. Owned the end-to-end workflow from Figma UI/UX design to deployment, including backend APIs and database modeling.

Frontend Developer at The Sports Media Agency/Runthrough

July 1, 2024 - October 10, 2025

Migrated the platform from WordPress to Angular, supporting 400,000+ global runners and 315+ events. Built scalable Angular components and a powerful search feature with advanced filters, while optimizing state management to improve performance. Enhanced the admin dashboard for efficient event and participant management, integrated Intercom for real-time support, and proposed UI/UX improvements via Figma.

Full-Stack Developer at Unstructured Studio – Outreachy Global Program

August 1, 2023 - October 10, 2025

Rebuilt the platform to enhance the learning experience for children (6–15) and provide better support for educators. Developed engaging, accessible React.js features and implemented UI/UX enhancements in Figma for improved interaction and accessibility. Aligned Django backend logic with new frontend features and contributed to a global open-source education initiative using Docker, MUI, Git, and REST APIs.

Full-Stack Developer at Camsol.io

February 1, 2023 - October 10, 2025

Designed and implemented database models using Directus Headless CMS to manage gas usage data. Built a cross-platform React Native app, translating Figma designs into production-ready features with real-time monitoring and tracking. Contributed to end-to-end development, ensuring seamless data visualization and an intuitive user experience.

Senior Software Engineer at RecreateApp

September 1, 2025 - October 10, 2025

Software Engineer at Bridge Labs

February 1, 2025 - October 10, 2025

Transformed Figma designs into a production-ready Next.js web platform connecting African developers with global opportunities. Built interactive employer dashboards and candidate features, integrating the Devmatch API for automated technical assessments and a video-based soft skills quiz module. Ensured a scalable, high-performance architecture using TypeScript, Tailwind CSS, Directus CMS, and managed complex state & async flows with Zustand and React Query.

Software Engineer at Nkwa

January 1, 2025 - October 10, 2025

Software Engineer at SnapCar Rentals

October 1, 2024 - October 10, 2025

Frontend Developer at The Sports Media Agency/Runthrough

July 1, 2024 - October 10, 2025

Full-Stack Developer (Open Source contributor) at Unstructured Studio – Outreachy Global Program

August 1, 2023 - October 10, 2025

Full-Stack Developer at Camsol.io

February 1, 2023 - October 10, 2025

Senior Software Engineer at RecreateApp

October 1, 2024 - May 1, 2025

Led the NotBroke mobile app development, an AI-powered platform that helps users unlock new income streams through personalized side hustle plans, progress tracking, and 24/7 guidance. Built a high-performance React Native app using Expo and Tailwind CSS, delivering a seamless, responsive experience across iOS and Android platforms. Integrated Claude AI SDK into a NestJS backend to generate personalized hustle plans and insights based on users' skills, availability, and income goals. Implemented Server-Sent Events (SSE) in NestJS to power real-time features like plan comparisons and in-app messaging, enabling dynamic, interactive user experiences. Integrated RevenueCat and configured in-app purchases on both iOS and Android, managing subscriptions and unlocking premium features such as income forecasting and guided daily tasks. Deployed the app to both the App Store and Google Play Store, handling release configurations and subscription setups on each platform.

Software Engineer at Bridge Labs

February 1, 2024 - February 1, 2025

Transformed Figma UI/UX designs into a production-ready web platform that connects top African software talent with global job opportunities through a 'talent-without-borders' model. Built and maintained the client-side application, enabling employers to seamlessly vet, shortlist, and manage developer profiles, streamlining the hiring pipeline. Integrated the Devmatch API to automatically score and assess candidates based on technical evaluations, providing objective insights into developer readiness. Engineered an interactive quiz module allowing candidates to submit video responses for soft skill and communication assessments. Developed using Next.js (both SSR and SSG), TypeScript, Tailwind CSS, and Directus CMS, ensuring a scalable and performant architecture. Ensured smooth user interactions through Zustand and React Query for advanced state and async data management, and implemented secure authentication flows across the platform.

Software Engineer at Nkwa

April 1, 2023 - January 1, 2025

Built a robust automated payment system using NestJS and MySQL, enabling users to schedule and manage recurring financial transactions, reducing manual friction and increasing app utility. Designed and developed the 'Save to Pay Later' feature in React Native, empowering users to gradually allocate funds for future purchases or bills, driving financial discipline and retention. Implemented a gamified points system and leaderboard, boosting user engagement and retention through social motivation and rewards. Maintained and optimized the cross-platform mobile app (Android & iOS) using React Native, significantly reducing load times and enhancing performance for over 70,000 users. Engineered a web-based financial reconciliation tool using NestJS and MySQL to ensure transaction accuracy, detect anomalies, and support compliance. Contributed to UI design using Figma, ensuring smooth collaboration between product and engineering. Supported product growth through participation in marketing st

Frontend Developer at The Sports Media Agency/Runthrough

January 1, 2023 - July 1, 2024

Migrated the RunThrough platform from WordPress to Angular, supporting 400,000+ global runners and 315+ events. Built scalable Angular components and a powerful search feature with filters (history, category, price, location). Enhanced admin dashboard for event and participant management, streamlining operations. Improved app performance by optimizing state management to reduce unnecessary re-renders. Integrated Intercom for user support and real-time communication. Proposed UI/UX improvements and design enhancements using Figma to elevate the user experience.

Full Stack Engineer (Open Source contributor) at Unstructured Studio – Outreachy Global Program

February 1, 2023 - August 1, 2023

Rebuilt the Zubhub open-source platform to enrich the learning experience for children (ages 6–15) in India and provide better support for educators. Developed engaging and accessible frontend features using React.js, tailored for young learners. Proposed and implemented design enhancements in Figma to improve user interaction and accessibility. Modified and aligned existing Django backend logic to support new frontend features and maintain seamless platform behavior. Contributed to a global open-source education initiative, collaborating with international teams and using tools like Docker, MUI, Git, and REST APIs.

Lead at Google Developer Student Clubs (GDSC) – University of Buea

August 1, 2021 - August 1, 2022

Led a community of over 150 students interested in learning new skills and solving problems in the community. Coordinate events with my team at least monthly to keep the community members engaged.