Martin Nzau
Full-Stack & Mobile Developer
Profile
Full-stack and mobile developer who ships complete products, not just code. Creator of ClauseShift, an AI contract reviewer live on the web, Google Play, the Amazon Appstore, the Huawei AppGallery, the Microsoft Store and Zapstore: I built the Next.js backend and AI pipeline, the Flutter apps, self-serve billing, the release automation, and a marketing site in seven languages. Also the maintainer of Custom RR, an open-source Android app shipped across five platforms. CEH certified, hackathon builder, and verified Upwork freelancer. Open to roles, freelance projects, and hard problems.
Technical Skills
Experience
- Built and shipped ClauseShift, an AI contract reviewer that cites the exact clause behind every risk it flags.
- Built the whole stack: Next.js backend and AI pipeline, Flutter mobile and desktop apps, self-serve billing, and analytics.
- Shipped to production on the web, Google Play, the Amazon Appstore, the Huawei AppGallery, the Microsoft Store and Zapstore, with automated multi-store release pipelines.
- Built a localized marketing site in seven languages with SEO structured data end to end.
- Supported business-critical applications at Kenya's national tax authority, a large, high-stakes environment.
- Facilitated the ITSM and change-management lifecycle: drafted technical documentation for Requests for Change (RFCs) and tracked system modifications.
- Provided hands-on technical support, troubleshooting complex application issues and reviewing System Change Requests (SCRs).
- Collaborated with development teams to implement permanent fixes and monitored enterprise-level application performance.
- Delivered IT support and software consulting projects for international clients, earning verified positive reviews and repeat business.
- Balanced client work alongside full-time studies, communicating directly with clients across time zones and shipping on schedule.
- Built and deployed responsive, cross-platform mobile apps in Flutter with a focus on user-centric interface design.
- Developed and hosted responsive websites in HTML, CSS, and JavaScript, with performance optimization and clean UI/UX.
- Owned the full delivery lifecycle, from debugging and cross-platform testing to deployment, shipping on time for local businesses.
Selected Projects
AI contract review with clause-level citations. Live on the web and in five app stores (Google Play, the Amazon Appstore, the Huawei AppGallery, the Microsoft Store and Zapstore), with billing, six-language localization, and automated store releases.
On-device M-PESA and Airtel Money statement analyser for Android: parses PDF statements entirely on the phone and breaks down fees and Fuliza costs. Live on the Amazon Appstore, the Huawei AppGallery, Zapstore, and direct APK; launched August 2026.
Open-source hub for custom ROMs and recoveries, published to five stores (Google Play, the Amazon Appstore, F-Droid, the Microsoft Store and Zapstore) and built for Android, Linux, Windows and macOS from one Flutter codebase. Tracks 18 ROMs, 5 recoveries and 500+ devices from live upstream sources, refreshed nightly by automated CI/CD. 2,100+ downloads and 124+ GitHub stars.
Per-request AI API where every query costs $0.001 USDC settled onchain (Arc blockchain). Solidity contract verifies micropayments before returning Gemini responses; 57+ live onchain transactions demonstrated.
Autonomous incident-response system: a three-agent AI pipeline (monitor, diagnose, remediate) that executes whitelisted SSH fixes and auto-generates PDF post-mortems. Built for the AMD Developer Hackathon.