Samuel Oyewale
Samuel Oyewale

Full Stack Software Developer

Open to offers · Member since 9 Oct 2026
Location
Rowlett, United States
Desired salary
Unspecified
Work preference
Remote Only / Full Time, Contract, Freelance
Experience level
Senior

About

Professional summary

I am a full stack software developer with more than six years of experience building web, mobile, backend, and AI-evaluation products. I work daily with JavaScript, TypeScript, and Python, delivering practical software from initial requirements through deployment and post-launch improvement.

I build modern applications with React, Next.js, FastAPI, Supabase, Firebase, PostgreSQL, and Node.js. My work includes e-commerce platforms, real-time applications, secure messaging, lead-generation systems, PWAs, dashboards, and mobile software.

I have hands-on experience designing databases, APIs, authentication, payment flows, role-based access control, analytics, SEO improvements, and automated deployments. I focus on reliable user experiences, responsive performance, and maintainable product architecture.

I also evaluate AI model outputs for training and fine-tuning, with more than 1,500 completed evaluation tasks and a quality score above 97%. My evaluation work covers accuracy, relevance, factuality, logical consistency, safety, and policy compliance.

I work effectively in remote and asynchronous environments, independently or with small engineering teams. I hold an active U.S. Secret clearance, am authorized to work in the United States, and bring experience handling sensitive documentation and mission-essential operations.

Skills

45 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Data Stores

Languages & Frameworks

Experience

Career history

Software Developer Sam & Jay Tech

I take client products from requirements discovery through database design, backend and frontend implementation, deployment, and ongoing iteration in a two-engineer digital product studio. The team ships updates weekly and maintains products after launch.

I built an e-commerce platform with Next.js and Supabase, including product variants, dynamic filtering, persistent carts, server-verified Paystack payments, inventory alerts, order management, RBAC, Meta conversion tracking, and Vercel preview deployments. I also built a real-money accountability PWA, an automated lead-generation platform using Playwright and FastAPI, and the company website with inquiry routing, analytics, SEO, and sub-two-second mobile performance.

Freelance Software Developer Independent

I delivered independent full stack software projects across web, mobile, and backend systems, both as a contractor and in collaboration with other engineers on multi-month builds. I developed my technical foundation through documentation-driven work with JavaScript, Python, C#, PHP, Firebase, and cloud infrastructure.

My projects included online stores, booking systems, dashboards, CMS sites, landing pages, and onboarding funnels built with React, PHP, Node.js, and PostgreSQL. I also ran A/B tests, improved completion rates, and optimized mobile performance.

Encrypted Cloud Messenger - Sole Developer Independent

I built a private Android messaging application with Firebase for real-time messaging, delivery and read receipts, push notifications, sign-in, contact discovery, and cloud backup.

I applied custom encryption to every message before it reached the server so messages remained encrypted at rest. I handled Android client development, releases, and APK distribution through APKPure for daily users of the application.

Encrypted File Vault - Sole Developer Independent

I developed a cloud storage application in plain Python using raw HTTP libraries and no frameworks. The system supported uploads, directories, multi-user login, encrypted storage, and per-folder access control.

The application ran for months without data loss and was designed as a secure alternative to cloud-storage products lacking granular folder-level access permissions.

Independent Game and Software Developer Self-directed

I created SoundRunner, an endless runner game controlled by voice input, as the sole developer using Unity and C#.

I implemented microphone capture, amplitude extraction, noise-floor calibration, threshold mapping, game physics, and procedurally generated obstacles that increased in difficulty. The game gained traction among peers.

AI Data Annotation Contributor AI Training Platform

I have completed more than 1,500 AI evaluation tasks, ranking model responses for accuracy, relevance, coherence, factual grounding, logical consistency, safety, and policy compliance. I maintain a quality and reviewer-agreement score above 97%.

I write reasoned justifications for each decision to support model fine-tuning. My work includes reviewing multi-turn conversations and long-form outputs for reliability and alignment.

Operations and Logistics Specialist (AFSC 3F151) USAF Air National Guard

I manage more than $1 million in mission-essential assets and coordinate movement for more than 500 personnel while operating under Department of Defense compliance requirements.

I hold an active Secret clearance and handle classified documentation under strict OPSEC procedures. I reduced waste by 15% across sites through data-driven inventory tracking.

Education

Learning history

Ladoke Akintola University of Technology (LAUTECH)

B.Tech, Computer Science

Bachelor of Technology in Computer Science. Expected completion in November 2026.

The Polytechnic Ibadan

Higher National Diploma (HND), Computer Science and Programming

Higher National Diploma studies in Computer Science and Programming.

Community College of the Air Force

A.A.S., Event Operations, Hospitality, Fitness and Recreation

Associate of Applied Science in Event Operations, Hospitality, Fitness and Recreation.

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