Medical-grade health intelligence for consumers and teams: answers are grounded with citations from trusted clinical sources (Mayo Clinic, CDC, NIH, WHO, Cleveland Clinic, and peer-reviewed literature). I architected triple-source retrieval across medical knowledge bases, live web sources, and product databases so responses stay evidence-based and actionable. I implemented dual AI guardrails (input safety and output validation), emergency detection with localized guidance, multi-turn memory for coherent follow-ups, and a real-time product finder for medicines and supplements. Stack: Python, LangChain, LangGraph, RAG, Qdrant, Vite, React, Tailwind CSS, medical NLP patterns suited to regulated-style UX

Cross-platform hotel access experience focused on digital keys, enterprise-style security assumptions, and operational clarity for front-desk workflows. I owned the mobile implementation with Flutter/Dart and Material Design 3 patterns, emphasizing fast check-in paths, biometrics-friendly flows, and wallet-style presentation where appropriate. Outcome: a smoother guest journey with less friction at check-in and stronger confidence in access control. Stack: Flutter, Dart, Material 3, biometric authentication patterns, NFC/wallet-style flows (as simulated or integrated per build)

Internal and academic-style research was slowing teams down: long literature review cycles and scattered sources. I built a retrieval-augmented assistant that summarizes papers, retrieves relevant literature, and answers research-style questions with traceable context. Stack: Python, TypeScript, Elasticsearch, LangChain, Ollama/OpenAI-style LLM workflows. Outcome: materially faster research iterations—on the order of ~20% time saved in the workflows we measured—by reducing manual search and re-reading loops

Most recipe sites skew premium or impractical for everyday households; Taste Tribe targets practical, budget-aware cooking. I built a community recipe product with ingredients, methods, and serving sizes, plus engagement features (comments, bookmarks, ratings) so home cooks can discover and save meals that fit real routines. Stack: web app deployed on Vercel (framework per your repo—React/Next as applicable). Outcome: clearer discovery for “everyday” meals and stronger retention through social proof and saved recipes

B2B-style media operations for Nairobi-based publishers and campaigns: high-volume editing, motion, and platform-native formats where turnaround is measured in hours. I developed and edited video content and interactive scripts, supporting live pressers, social campaigns, and event coverage with consistent brand execution. Stack: Adobe Creative Suite, DaVinci Resolve, motion and post pipelines; delivery tuned for social and broadcast-adjacent specs. Outcome: stronger audience engagement on key campaigns—historically on the order of ~30% lift where we could attribute to creative and packaging improvements

Multi-outlet health retail (40+ locations in Kenya): nutritionists and cosmeticians needed consistent training, quizzes, and role-based progression—not one-off PDFs. I built the staff-facing mobile experience (role-based tracks such as intern/nutritionist/expert, searchable quizzes, gated levels, and progress UX) and the HealthyU Admin web suite for operations: live dashboards, course and quiz CRUD, categories/tags, analytics (engagement, quiz performance, course popularity), and notifications. Stack: React Native (mobile), Firebase (as used), React web admin, REST/real-time data patterns for large catalogs (e.g., 100+ courses loaded operationally). Outcome: scalable training delivery across outlets with measurable completion signals and admin visibility into learning activity.

Retail HQ and multi-site operations needed reliable people flows: employees clocking in/out, front-desk visitor intake, and admin reporting without spreadsheet chaos. I delivered a web admin experience with segmented modules (employees, attendance, visitors), search and time filters (today/week/month), CSV export for attendance, and CRUD for employee records; plus employee-facing entry (“Healthy U Employee Attendance System”) and visitor check-in flows with purpose and host routing. Stack: React (or your actual web stack), role-based admin patterns, tabular data + export, timestamped audit-style logs. Outcome: a single operational surface for HR and front desk instead of fragmented tools, with exportable records for reporting.

Built and shipped Teleios Connect, a cross-platform mobile app (Android + iOS) that helps communities access sermon/video content reliably, including low-connectivity environments. I implemented a production-ready architecture with React Native (Expo) + TypeScript, Firebase Auth/Firestore, and Bunny.net CDN for fast media delivery. Using an impact-first approach, I delivered: - Streaming + offline downloads so users can watch/listen anytime - Search and favorites to improve content discovery and retention - Background sync + notifications to keep content fresh without manual refresh - Secure authentication and scalable data model for reliable long-term growth Result: a smoother user experience, reduced friction for repeat engagement, and a mobile product foundation that can scale to larger user bases and content libraries. Published to both Google Play Store and Apple App Store, with OTA update support via Expo EAS Updates