Hi, I'm Matthias Amire
Software Engineer specializing in frontend, mobile applications, APIs, and technical troubleshooting.
With 3+ years of professional development experience, I build production web and mobile applications using React, Next.js, React Native, and TypeScript. I particularly enjoy investigating difficult bugs, debugging upstream API integrations, and solving complex technical problems across the stack.
About Matthias Amire
A software engineering foundation focused on building reliable production systems and methodically resolving complex software problems.
Engineering Production Software with a Natural Gravitation Toward Troubleshooting
Over the past 3+ years, I have worked as a professional software engineer building and scaling web and mobile applications using React, Next.js, React Native, Expo, and TypeScript. My work spans public-facing consumer platforms, government regulatory systems, e-commerce marketplaces, and offline-first mobile utilities.
Throughout my development career, I have consistently gravitated toward debugging, root-cause investigation, and integration troubleshooting. Whether it is tracking down race conditions in payment webhooks, resolving OAuth redirect loops, diagnosing frame-rate drops in deep mobile lists, or resolving cross-origin network failures, I find deep satisfaction in dissecting how software behaves at its boundaries and engineering resilient solutions.
Building on this solid engineering foundation, I am actively expanding toward Developer Support Engineering, Technical Support Engineering, Implementation Engineering, and Integration Engineering roles — where hands-on code understanding directly empowers developers, partners, and enterprise customers to overcome complex technical barriers.
Full-Lifecycle SWE Experience
React • Next.js • React Native • TypeScript
Proven track record constructing user-facing client architectures, state management systems, and cross-platform native mobile applications.
Systematic Root Cause Analysis
Isolation • Reproduction • Resolution
Disciplined defect isolation using DevTools, network inspect, logging, and minimal reproducible harnesses to fix real underlying causes.
APIs & Authentication Integration
OAuth 2.0 • Azure AD • REST • Webhooks
Extensive practical exposure configuring token lifecycles, Azure identity handshakes, and third-party integration pipelines.
Skills & Core Expertise
Organized into distinct engineering competencies supported directly by verified production experience.
Programming
Core languages utilized across production web, mobile, and backend codebases.
TypeScript
Strong typing, interface definitions, strict type checking, and robust compile-time safety.
JavaScript (ES6+)
Asynchronous event loops, DOM manipulation, promises, closures, and modern ES syntaxes.
Python
Scripting, backend service implementation, and REST endpoint construction.
Frontend
Modern component-driven web frameworks, styling engines, and reactive state stores.
React
Custom hooks, lifecycle optimization, component architecture, and reactive rendering.
Next.js
App Router architecture, Server-Side Rendering (SSR), Server Actions, and bundle optimization.
Redux & Redux Toolkit
Predictable centralized state trees, slice management, and async thunk middleware.
Tailwind CSS
Utility-first responsive layouts, dynamic theme configuration, and modern styling systems.
Shadcn UI
Accessible, composable headless UI components built on top of Radix primitives.
Mobile
Cross-platform native mobile applications deployed to iOS and Android environments.
React Native
Native view bridge orchestration, responsive mobile layout trees, and platform-specific behaviors.
Expo
EAS build systems, native configuration management, and hardware SDK integration.
Mobile Device APIs
Hardware biometrics (Face ID/Touch ID/KeyStore), camera access, local storage, and secure enclave.
Mobile Debugging
React Native debugger, Flipper, Android Logcat, and device-specific rendering diagnostics.
APIs & Web
Network communication, HTTP protocol adherence, and robust integration patterns.
REST APIs
Standard HTTP methods, status code semantics, payload structuring, and idempotency patterns.
API Integration
Consuming upstream services, data serialization, schema validation, and error contract handling.
HTTP & Networking
Headers inspection, CORS policy resolution, cache control headers, and connection lifecycle.
Axios & Fetch
Configuring interceptors, retry strategies, timeout thresholds, and cancellation tokens.
Webhooks
Receiving and verifying asynchronous event callbacks from payment providers and third-party services.
Troubleshooting
Methodical diagnostic workflows to isolate, reproduce, and resolve defects.
Root Cause Analysis (RCA)
Isolating underlying failure mechanisms rather than addressing mere symptoms.
Frontend & Mobile Debugging
Diagnosing re-render loops, state drift, layout shifts, and memory leaks.
Network Inspection
Analyzing request/response payloads, timing waterfalls, and TLS/CORS connection errors in DevTools.
Console & Log Analysis
Tracing stack errors, uncaught promise rejections, and structured log events.
Performance Profiling
React DevTools profiler, mobile frame-rate (FPS) drops, and script execution bottlenecks.
Authentication
Identity flows, token management, and secure authorization handshakes.
OAuth 2.0 & Azure AD
Authorization code flows, token exchange, refresh cycles, and Azure AD / Entra ID tenant config.
JWT & Token Management
Validating payload claims, secure token storage, automated refresh interceptors, and expiry handling.
Session & State Auth
Role-based access control (RBAC), protected route guards, and login session invalidation.
Device Biometrics
Integrating native Face ID / Touch ID hardware authorization via local secure enclave.
Backend
Backend services, serverless cloud functions, and database interfaces.
FastAPI (Python)
Building high-performance REST APIs, Pydantic validation models, and asynchronous endpoint handlers.
Azure Functions
Serverless event-driven execution for file processing, notifications, and micro-tasks.
Azure Storage & SQL
Managing blob storage containers, SAS tokens, and relational SQL queries.
SQLite
Embedded relational database schema design, indexing, and transactional integrity.
Developer Tools / CI/CD
Version control workflows, build pipelines, and automated delivery systems.
Git & GitHub
Branching strategies, conflict resolution, rebase hygiene, and collaborative pull request reviews.
GitHub Actions
Configuring CI automation workflows for linting, build verification, and release management.
Azure DevOps
Managing build pipelines, artifact releases, and continuous integration triggers.
CircleCI
Containerized build environments, deployment pipelines, and workflow orchestration.
Explore the Troubleshooting Lab
I maintain an empirical engineering workbench dedicated to reproducing, isolating, and investigating difficult software problems — including OAuth handshakes, REST API serialization discrepancies, and mobile thread performance.
Featured Projects
A breakdown of production applications, enterprise platforms, and native mobile utilities with verified personal contributions and troubleshooting focus.
Mobile AppPrivate, offline-first personal asset and expense tracker built with React Native & Expo, featuring local biometrics and budget management.
- Offline-first personal asset & liability tracking with real-time valuation.
- Secured financial records with device-native biometrics via Secure Enclave.
- Enabled direct APK download and pending Google Play Store submission.
Web Application & MarketingRestaurant discovery web application and corporate marketing website helping users explore menus, search local eateries, and connect.
- Engineered dynamic restaurant discovery & menu filtering mechanisms.
- Designed responsive Next.js frontend maximizing mobile usability.
- Integrated backend APIs for real-time culinary search and discovery.
Mobile App & Admin PortalIdentity verification and secure document management ecosystem comprising a React Native mobile application and React/Vite admin dashboard.
- Configured Azure OAuth identity management across mobile and web.
- Implemented secure chunked file uploads directly to Azure Blob Storage.
- Built role-based dashboard for verification workflows and member voting.
Mobile AppSocial commerce and visual fashion discovery mobile application published on Google Play Store, centered on creator feeds and engagement.
- Built native interactive post feed, double-tap likes, and visual boards.
- Optimized FlatList item recycling for smooth 60fps scrolling performance.
- Successfully packaged and released onto the Google Play Store.
Government Web Portal & AdminOfficial public regulatory portal and administrative management system for the Nigeria Civil Aviation Authority Directorate of Air Transport Regulation.
- Constructed public regulatory portal and role-based administrative panels.
- Built secure document verification and regulatory announcement modules.
- Optimized data caching and component rendering for high stability.
E-commerce Platform & AdminAI-assisted e-commerce buyer platform and back-office management system featuring voice search, typo-tolerant querying, and payment integrations.
- Developed AI search modules supporting typo tolerance and speech-to-text.
- Configured dual payment gateways with Flutterwave & Seerbit modules.
- Architected dynamic catalog navigation and administrative analytics.
Mobile AppMobile logistics and parcel delivery application for drivers, package routing, and real-time proof-of-delivery status.
- Constructed driver onboarding and route dispatch checklist screens.
- Implemented offline status queuing for reliable proof-of-delivery sync.
- Ensured cross-device responsive UI scaling across Android devices.
Enterprise Internal PlatformsInternal project management, lead CRM, and cryptographic certificate issuance and verification platforms developed at TAWOL Technologies.
- Designed verification dashboards and cryptographic certificate issuance pipelines.
- Implemented role-based client management and lead tracking workflows.
- Contributed to automated CI/CD workflows and collaborative code reviews.
Work Experience
Over 3 years contributing to cross-functional teams, startup squads, and enterprise systems.
Frontend Engineer
Localbuka, Nigeria•Dec 2025 - Present
Localbuka, Nigeria
- Designed and developed a restaurant discovery web application enabling users to browse, search, and explore food options.
- Built responsive and user-friendly interfaces using Next.js, React, and TypeScript.
- Implemented core features including restaurant listings, dynamic filtering, and live query rendering.
- Integrated REST backend APIs to manage data synchronization and dynamic user interactions.
- Investigated and resolved mobile browser rendering quirks and responsive layout constraints across touch viewports.
- Developed the company marketing website focused on clean UI/UX, fast page delivery, and accessibility.
Fullstack Engineer
Keepsafe ng, United Kingdom•Oct 2025 - Present
Keepsafe ng, United Kingdom
- Built and maintained backend cloud integrations with Azure Functions, Azure Blob Storage, and Azure SQL database for secure document workflows.
- Engineered the Keepsafe mobile app using React Native & Expo (TypeScript) and the admin web portal using React Vite, Tailwind CSS, and Shadcn UI.
- Implemented and troubleshot OAuth authentication with Azure, resolving token refresh timing issues and redirect loop edge cases.
- Engineered secure file upload pipelines with progress tracking and network timeout handling for high-resolution document submissions.
- Created role-based administrative dashboards, user verification flows, and voting UI modules.
- Conducted ongoing debugging and technical troubleshooting across both mobile and web clients, resolving integration defects promptly.
Frontend Engineer
SterlingTech & Data Science, Nigeria•Oct 2023 - Jan 2026
SterlingTech & Data Science, Nigeria
- Led frontend development for Peoplesstore (now Moorcart.com), an AI-assisted e-commerce platform, using Next.js, TypeScript, Shadcn UI, Tailwind CSS, Redux, and FastAPI.
- Integrated AI-enhanced search features including typo tolerance, voice-to-text input, and dynamic relevance filtering.
- Integrated payment checkout flows with Flutterwave and Seerbit, debugging callback reconciliation and webhook edge cases.
- Led frontend development for DATR (Directorate of Air Transport Regulation, NCAA) using React, TypeScript, Tailwind CSS, Shadcn UI, and Redux.
- Collaborated closely with backend engineers to diagnose API integration errors and resolve data serialization mismatches.
Frontend Engineer
Keepsafe ng, United Kingdom•Nov 2024 - Sept 2025
Keepsafe ng, United Kingdom
- Built Keepsafe cross-platform mobile application and web administration panel from scratch using React Native Expo, TypeScript, and React Vite.
- Implemented Azure OAuth authentication flows and secure credential storage.
- Developed document verification workflows, member onboarding interfaces, and interactive dashboards.
- Troubleshot cross-browser rendering inconsistencies, API payload formatting issues, and mobile state caching.
Mobile Engineer
Jopiter.io, Nigeria•Feb 2025 - Aug 2025
Jopiter.io, Nigeria
- Engineered core features of a social fashion mobile application using React Native (Expo + TypeScript), published on the Google Play Store.
- Implemented interactive post feeds, nested comment flows, and creator engagement features.
- Investigated and resolved mobile scroll stutter (jank) in long feeds by optimizing image rendering, list memoization, and item recycling.
- Integrated REST APIs and handled mobile-specific debugging across diverse Android device form factors.
Frontend Engineer
TAWOL Technologies, Nigeria•Feb 2023 - April 2024
TAWOL Technologies, Nigeria
- Developed multiple internal enterprise platforms: Client Manager, Lead CRM, Save For Future, and Lead Certificate using React, React Native, and Redux.
- Collaborated closely with backend engineers to integrate APIs, standardize request/response contracts, and troubleshoot integration errors.
- Maintained CI/CD pipelines across environments, managed code reviews, and resolved pull request integration conflicts.
- Conducted debugging sessions to fix state desynchronization, browser storage limits, and export engine memory spikes.
Mobile Engineer
Delbott, Nigeria•Sept 2022 - Dec 2022
Delbott, Nigeria
- Led mobile application development for the Delbott package delivery platform using TypeScript, React Native, Redux, and Tailwind CSS.
- Constructed driver onboarding modules, authentication flows, and real-time delivery management interfaces.
- Investigated intermittent connectivity issues, ensuring state integrity when mobile drivers transitioned between offline and online states.
- Ensured cross-device responsive UI scaling and consistent interaction patterns.
Computer Technician
AP & ICT (The Federal Polytechnic Ado)•Jan 2017 - March 2021
AP & ICT (The Federal Polytechnic Ado)
- Handled Information and Communication Technology hardware setups, local network connectivity, and electronic payment terminal troubleshooting.
- Collaborated with hardware engineers, network administrators, and data analysts to resolve workstation and connectivity failures.
- Installed, configured, and diagnosed computer hardware operating systems and application software packages.
- Supported technical onboarding for faculty and students, providing direct user problem resolution.
Get In Touch
I am open to international Software Engineering, Developer Support, Technical Support, and Integration Engineering opportunities. Drop a message!
Send a Message
Have an opportunity or project? Fill out the form, or email me directly at support@matthiasamire.com