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Hello

I'm Gabriel Achimalo

Senior Software Developer

Pharmacist-turned Senior Software Developer building production-ready web, mobile, and AI-powered products. I blend strong UI taste with dependable engineering—so teams can ship fast without sacrificing clarity, performance, or maintainability.

Let's CollaborateSee Selected Work
Gabriel AchimaloReactAI/LLMSaaS

Snapshot

  • 6+ years delivering web + mobile products (React/Next.js, React Native, Flutter).
  • Full-stack: Node/Express/FastAPI + Supabase/Postgres/Firebase.
  • AI/LLM features, automation hooks, and multi-tenant SaaS architecture.
  • Unity/3D experiences (WebGL/WebGPU) and performance-first engineering.
  • Freelance-ready: clear communication, ownership, and reliable delivery.

About Me

ABOUT ME

I build products that feel clean and effortless—on the surface and under the hood. I've shipped across web, mobile, backend services, AI integrations, and interactive 3D experiences. My clinical background also shaped how I work: precision, calm execution, and respect for real-world constraints.

Pharmacist → Senior Software Developer

I bring a rare mix of clinical discipline and engineering execution—high accuracy, fast delivery, and strong product judgment.

Full-stack builder with UI taste

Comfortable owning the full loop: discovery → design → implementation → deployment, with strong UI polish and performance focus.

Freelance + product founder mindset

Experienced delivering client projects and building my own products—clear communication, realistic planning, and high ownership.

Production-first engineering

I prioritize reliability: sensible architecture, secure data handling, observability, and deployment workflows that don’t surprise you.

Focus

FOCUS AREAS

Where I spend most of my time and energy when building products.

Product & SaaS Delivery

Shipping end-to-end web products—from MVP to production—balancing speed, quality, and long-term maintainability.

Front-End Architecture

Designing scalable UI systems: component libraries, patterns, state management, and multi-tenant routing that stays clean as teams grow.

Mobile Apps (iOS/Android)

Building and shipping mobile products with React Native (Expo) and Flutter—auth, push notifications, offline-ready UX, and store compliance.

Backend & Integrations

Building APIs and data layers with Node/Express/FastAPI, Supabase/Postgres and Firebase—plus third-party integrations (CRM, payments, analytics).

AI, Automation & Tooling

Integrating LLMs into real products: agent workflows, summarization, recommendations, risk scoring, and automation hooks that teams can trust.

3D, Web Experiences & Unity

Creating interactive 3D experiences for web and mobile (Unity/WebGL/WebGPU), from game mechanics to immersive virtual galleries.

Portfolio

MY PORTFOLIO

A few products and systems I've built across SaaS, mobile, AI, and 3D experiences.

BarrierX (Agentic Sales Platform)

Full-stack + AI workflows

Multi-tenant platform with risk scoring, deal insights, and agent-driven recommendations. Built with modern web stack + Supabase/Postgres and integrations.

Market Woman (Invoicing SaaS)

Product + engineering

Simple invoicing SaaS focused on clarity and speed—auth, data modeling, and clean UX for everyday business operations.

WebSaaSAuthPostgres

IDScan / COOU E-ID

Mobile + compliance

Digital ID flows for schools/workplaces, with strong emphasis on onboarding UX, verification, and store policy compliance.

MobileKYCSecurityCompliance

OpenX (Immersive 3D Galleries)

3D web experience

Platform enabling artists to showcase work in immersive 3D spaces across web/mobile/VR, combining product UX with interactive rendering.

Jetpack Agent (Game)

Gameplay + systems

A cyberpunk vertical ascension shooter—movement, scoring, enemies, powerups, and performance-tuned gameplay loops.

Agbero Run / Osondu (Game)

Gameplay + systems

Simple 3d runner game with a focus on performance and gameplay.

Ubuntu Energy (IoT Monitoring)

Backend + devices

Energy monitoring concepts combining device telemetry and server-side processing—focused on practical deployment constraints.

AgentX (AI Sales Calls)

AI agent + voice

AI agent with automated, intelligent call conversations with clients—part of BarrierX agent orchestration.

Tranzakt Financial Services

Mobile + fintech

Mobile payment application built to scale—with focus on smooth UX and reliable core transaction flows.

EstateAR & ViewE (AR)

AR on web + mobile

Augmented reality applications for estate and viewing experiences across web and mobile platforms.

Smart Home (IoT Control)

Mobile + connectivity

React Native smart home app with proprietary connection algorithms configured for reliable device control.

Experience

WORK HISTORY

A quick timeline of roles where I built immersive experiences, mobile products, and scalable systems.

2024 – 2026

Product Lead

BarrierX LLC · USA

  • Lead developer for AI agent and orchestration architecture.
  • Built recommendation engine for deal recovery and sales marketing teams.
  • Developed AgentX—an AI agent for automated, intelligent client call conversations.
  • Structured a multi-tenant system achieving 90% uptime.
AIMulti-tenantSaaSLeadership

2020 – 2024

Lead Product Developer

Tranzakt Financial Services · Nigeria

  • Lead Software Developer for mobile app development ensuring smooth UX for users.
  • Spearheaded the AI adoption team to integrate AI and machine learning across Tranzakt services.
  • Built automated payment disbursement system with smart AI migration from systems like Odoo.
  • Made critical technology and deployment decisions for product delivery.
MobileAI/MLPaymentsFintech

2020 – Ongoing

Lead Software Developer

Scuudu Labs LTD · Enugu, Nigeria

  • Led AR applications on web and mobile (e.g., EstateAR and ViewE).
  • Spearheaded VR application development for clients.
  • Delivered mobile apps for clients using React + React Native.
  • Owned technical decisions, architecture, and delivery for internal + client projects.
  • Spearheaded IDScan (native Android) and companion Electron app for student verification.
  • Built Smart Home application in React Native with proprietary connection algorithms.
AR/VRMobileLeadershipArchitecture

2022 – 2023

Unity Developer

Zeeon Metaverse · Remote, USA

  • Built UI and interaction flows for metaverse experiences.
  • Collaborated cross-functionally to create immersive virtual environments.
  • Optimized performance using profiling to ensure smooth experiences across devices.
UnityPerformanceUIMetaverse

2019 – 2020

XR / Virtual Reality Developer

Genesys Tech Hub · Enugu, Nigeria

  • Developed immersive VR experiences with interactive mechanics and user interactions.
  • Worked with multidisciplinary teams to deliver XR products aligned with product vision.
  • Focused on performance and user satisfaction in real-time 3D environments.
  • Developed Tranzakt mobile payment application built to scale.
XRVRUnity3D

Education

EDUCATION & TRAINING

2010 – 2015

Bachelor's Degree

Igbinedion University Okada

Skills

SKILLS & TOOLS

Technologies and practices I lean on to ship dependable products.

Skill Core
React, Next.js & TypeScript
React Native (Expo & CLI) & Flutter
Android (Java/Kotlin) & iOS (Swift/Objective-C)
Node.js, Express & FastAPI
Supabase (RLS, Postgres) & Firebase
REST/GraphQL API Integration
AI/LLM Integrations & Agent Workflows
Multi-tenant SaaS Architecture
Design Systems & UI Engineering
Accessibility (WCAG) & UX Polish
Performance Optimization & Observability
Payments, Auth & Secure Data Handling
DevOps: Docker, CI/CD, Vercel/Render/DigitalOcean
Unity (URP), WebGL/WebGPU & 3D Experiences
IoT/Embedded (ESP32 + cellular modules)
Product Delivery, Collaboration & Ownership
C#, C++, Dart, Python & Java
MongoDB, .NET & Electron
Redux, Emotion, Babylon.js & Flutter Bloc
PyTorch, Unity DOTS/ECS & HLSL
React Vite

Workflow

MY PROCESS

A simple process that keeps projects focused and aligned.

01

Clarify Outcomes

Align on business goals, user needs, constraints, success metrics, and a realistic MVP scope.

02

Design the System

Define architecture (UI, APIs, data, auth), pick the stack, and plan for performance, security, and iteration.

03

Build & Integrate

Implement clean, reusable UI and reliable backend services, with thoughtful integrations, tests, and quality gates.

04

Launch, Measure, Improve

Deploy, monitor, fix what matters, and keep shipping improvements based on real usage—not guesses.

Services

WHAT I DO

Common engagements that land well for teams, founders, and clients.

MVPs & Product Builds

From 0→1 builds: landing → auth → core flows → dashboard → deployments, done fast without a messy codebase.

Front-end Systems & UX Polish

Design systems, component libraries, and performance upgrades that make products feel premium and maintainable.

Mobile Apps

React Native/Flutter builds: auth, push notifications, offline UX, deep links, store readiness, and stable releases.

Desktop Applications

Electron and native desktop apps for Windows, macOS, and Linux—offline-ready UX, auto-updates, system integrations, and companion tools alongside web and mobile.

Backend & Integrations

APIs, data modeling, Supabase/Firebase, secure auth, payments, analytics, and third-party integrations.

AI Features That Ship

LLM integrations, agent workflows, summarizers, and recommendation systems that are measurable and reliable.

3D & Interactive Experiences

Unity/WebGL/WebGPU experiences—from product demos to immersive galleries and lightweight game mechanics.

CONTACT

Contact

GET IN TOUCH

Reach Me

Feel free to get in touch. I'm open to new projects, creative ideas, and opportunities to build meaningful products.