Williams Williams
Williams Williams

Senior Software Engineer | AI & Full Stack Engineer

Actively looking · Member since 17 Aug 2026
Message
Location
Port Harcourt, Nigeria
Desired salary
Confidential
Work preference
Remote Only / Full Time, Contract
Experience level
Senior

About

Professional summary

I am a Senior Software Engineer with over five years of experience building and scaling fintech, SaaS, social commerce, crypto, and AI-powered products for distributed teams in the United States, Australia, and Nigeria.

I specialize in full-stack web development using TypeScript, React, Next.js, Node.js, Python/FastAPI, Laravel, and SQL databases. I build production-grade APIs, responsive user interfaces, reusable application architectures, and end-to-end product features.

I have hands-on experience integrating LLMs and the OpenAI SDK to create AI chatbots and intelligent product experiences. I also work with performance optimization techniques including caching, code splitting, lazy loading, database indexing, and rendering improvements.

As a technical lead and CTO, I have owned technical strategy from product conception through architecture, implementation, deployment, and post-launch improvements. I value maintainable systems, SOLID principles, Atomic Design, testing, code reviews, and reliable CI/CD workflows.

I have worked remotely across cross-functional startup teams, collaborating through sprint planning, standups, client demos, and code reviews. I am focused on delivering scalable, high-impact software that improves business outcomes and user experiences.

Notice period: immediately

Skills

40 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

CTO & Technical Lead Padisquare

Led the technical delivery of Padisquare from concept through launch as a remote contract CTO and Technical Lead.

Defined product architecture and built a social commerce marketplace and escrow platform connecting buyers with verified vendors. Delivered vendor storefronts, product discovery, product requests, feeds, and social commerce functionality while owning deployment and production improvements.

Senior Software Engineer Token Metrics

Built an AI-powered cryptocurrency chatbot using the OpenAI SDK and PostgreSQL, enabling natural-language interaction with crypto-related data. Established reusable cross-platform architecture for the company's mobile application and led development of the Governance & Staking Dashboard.

Improved application performance by 30% through caching, code splitting, lazy loading, and architectural improvements. Helped decouple backend APIs from the Next.js application into standalone services and received Employee of the Month recognition three times.

Technical Lead Fuelsgate

Architected and led development of a scalable application across frontend, backend, and deployment layers as a remote contract Technical Lead.

Introduced reusable frontend architecture based on Atomic Design and SOLID principles, as well as frontend and backend testing practices. Improved performance with caching, code splitting, lazy loading, and rendering optimization, while managing DigitalOcean and Vercel deployments and GitHub Actions CI/CD.

Full Stack Software Engineer ProDevs

Led feature development across multiple products from implementation and testing through deployment and client feedback. Built a Chrome extension powered by the OpenAI API that contributed to a 25% increase in the platform user base.

Developed and optimized Node.js/Express and Laravel REST APIs, improving data processing and retrieval efficiency by 25%. Integrated payment and verification services, improved frontend performance by 40%, and worked through sprint planning, code reviews, standups, and client demos.

Frontend Software Engineer CosmoRemit

Built a cross-border remittance platform using React and Redux for a remote Australian team.

Implemented pay-in and pay-out flows with Thunes and Monoova integrations. Developed transaction, user, and KYC/AML administration dashboards and optimized the platform for high-volume transaction workloads.

Full Stack Software Engineer Simpoo Business

Improved frontend rendering performance by 30% using virtualization and lazy loading. Built responsive, mobile-friendly interfaces from Figma mockups and wireframes using component-based Atomic Design patterns.

Implemented SEO practices, including meta tags and alt text, to improve search visibility. Established code review and testing practices, delivered new features and bug fixes, and improved REST API response times through caching and query optimization.

Full Stack Software Engineer Olotu Square

Contributed to a cooperative platform built with PHP and Laravel, helping increase user engagement by 15%.

Automated deployments with GitHub Actions and integrated third-party services including Recova, Indicina, Paystack, Okra, and Mono. Applied SOLID principles and Atomic Design patterns and managed dedicated virtual hosting for application performance, security, and scalability.

Education

Learning history
No education data available.

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