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I'm a passionate Senior Software Engineer with a track record of shipping high-performance web applications and leading cross-functional teams. Over the last 6+ years, I’ve built and scaled products using React, Next.js, Vue.js, Nuxt.js, Python, and Node.js, driving performance improvements, robust architectures, and maintainable codebases. I love mentoring teammates, refining process, and delivering value to customers through well-architected solutions. I thrive in fintech, crypto, and SaaS environments, collaborating with product, design, and QA to ship features quickly and reliably. I’m dedicated to clean code, performance optimization, and thoughtful architecture that stands the test of time.…I'm a passionate Senior Software Engineer with a track record of shipping high-performance web applications and leading cross-functional teams. Over the last 6+ years, I’ve built and scaled products using React, Next.js, Vue.js, Nuxt.js, Python, and Node.js, driving performance improvements, robust architectures, and maintainable codebases. I love mentoring teammates, refining process, and delivering value to customers through well-architected solutions. I thrive in fintech, crypto, and SaaS environments, collaborating with product, design, and QA to ship features quickly and reliably. I’m dedicated to clean code, performance optimization, and thoughtful architecture that stands the test of time.

William Williams

Back-End Developer, Front-End Developer, Full Stack Developer, +2

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I'm a passionate Senior Software Engineer with a track record of shipping high-performance web applications and leading cross-functional teams. Over the last 6+ years, I’ve built and scaled products using React, Next.js, Vue.js, Nuxt.js, Python, and Node.js, driving performance improvements, robust architectures, and maintainable codebases. I love mentoring teammates, refining process, and delivering value to customers through well-architected solutions. I thrive in fintech, crypto, and SaaS environments, collaborating with product, design, and QA to ship features quickly and reliably. I’m dedicated to clean code, performance optimization, and thoughtful architecture that stands the test of time.…I'm a passionate Senior Software Engineer with a track record of shipping high-performance web applications and leading cross-functional teams. Over the last 6+ years, I’ve built and scaled products using React, Next.js, Vue.js, Nuxt.js, Python, and Node.js, driving performance improvements, robust architectures, and maintainable codebases. I love mentoring teammates, refining process, and delivering value to customers through well-architected solutions. I thrive in fintech, crypto, and SaaS environments, collaborating with product, design, and QA to ship features quickly and reliably. I’m dedicated to clean code, performance optimization, and thoughtful architecture that stands the test of time.

Available to hire

I’m a passionate Senior Software Engineer with a track record of shipping high-performance web applications and leading cross-functional teams. Over the last 6+ years, I’ve built and scaled products using React, Next.js, Vue.js, Nuxt.js, Python, and Node.js, driving performance improvements, robust architectures, and maintainable codebases. I love mentoring teammates, refining process, and delivering value to customers through well-architected solutions.

I thrive in fintech, crypto, and SaaS environments, collaborating with product, design, and QA to ship features quickly and reliably. I’m dedicated to clean code, performance optimization, and thoughtful architecture that stands the test of time.

Skills

Experience Level

Expert

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Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer (Contract) at Token Metrics

November 1, 2024 - Present

Led architecture and development for Token Metrics 3.0 in a remote-first setup. Migrated the research blog platform from WordPress to Next.js with Strapi CMS to improve performance and scalability, resolved critical QA issues, and built an AI chatbot using the OpenAI SDK with the PostgreSQL database. Implemented caching, code-splitting, and lazy loading; decoupled back-end APIs from the front-end; contributed to Governance and Staking Dashboard ensuring robust functionality.

Lead Software Engineer at Fuelsgate

May 1, 2025 - October 3, 2025

Designed and implemented the entire software architecture for the application ensuring scalability and maintainability. Applied SOLID and Atomic Design principles, documented APIs with Postman and Storybook, built comprehensive unit tests, and improved performance through caching, code-splitting, and lazy loading. Set up CI/CD pipelines with GitHub Actions and integrated with third-party services as needed.

Frontend Software Engineer at Shortpoint

July 31, 2024 - October 3, 2025

Enhanced code organization and performance by applying best practices in collaboration with cross-functional teams. Contributed to a monorepo architecture and component-based patterns, improving code quality and modularity.

Full Stack Software Engineer at Pro Devs

April 20, 2024 - October 3, 2025

Led end-to-end development for multiple projects including Pro Devs, Tabc ay, Mentra, Thata p p, Billzpay, FlipList, and Waste Management. Implemented RESTful APIs, integrated third-party services, and improved state management and deployment processes.

Full Stack Software Engineer at Simpoo Codes

April 20, 2023 - October 3, 2025

Built RESTful APIs using Node.js/Express.js and PHP/Laravel; integrated third-party APIs such as Remit, Okra, Mono; improved data handling with database migration and caching; established CI/CD pipelines.

Full Stack Software Engineer at Olotu Square

August 31, 2021 - October 3, 2025

Directed development from concept to deployment across three projects; improved front-end performance via virtualization and lazy loading; implemented responsive mobile-first pages; integrated payment processing and third-party APIs; designed scalable architecture for maintainability.

Senior Software Engineer (Contract) at Token Metrics

November 1, 2024 - Present

Rebuilt the research blog platform by migrating from WordPress to Next.js and Strapi CMS, enhancing performance, scalability, and developer experience. Resolved critical bugs reported by QA, Sentry, and stakeholders, achieving high platform stability. Built an AI chatbot using the OpenAI SDK wired to our PostgreSQL database. Optimized overall performance by 30% through modular separation, database migration (Snowflake to Supabase), and backend/API decoupling. Led the Governance & Staking Dashboard development for a seamless user experience and robust functionality. Received Employee of the Month for contributions.

Lead Software Engineer at Fuelsgate

May 1, 2025 - October 3, 2025

Designed and implemented the app architecture with emphasis on scalability and maintainability. Applied Atomic Design and SOLID principles. Documented APIs and UI components using Postman and Storybook. Wrote comprehensive unit tests for frontend and backend. Improved performance with caching, code splitting, and lazy loading. Optimized state management using Context API, useMemo, and useCallback. Deployed applications to DigitalOcean and Vercel.

Frontend Software Engineer at Shortpoint

July 1, 2024 - October 3, 2025

Enhanced code organization and performance; contributed to a monorepo with component-based architecture and atomic design, reducing technical debt. Improved code quality and modularity with a component-driven approach and an arcitecture pattern. Optimized frontend state management with Redux, leading to faster load times and smoother user experiences. Collaborated with QA to resolve customer issues and deployed new features, resulting in a 20% increase in positive customer feedback. Participated in sprint planning, code reviews, and daily standups.

Full Stack Software Engineer at Pro Devs

April 1, 2024 - October 3, 2025

Designed and implemented the architecture for three projects, focusing on feature implementation, testing, and optimization to meet project requirements. Built a Chrome extension leveraging the OpenAI API, driving a notable increase in platform user base and engagement. Contributed to sprint planning, code reviews, and daily standups to ensure timely delivery.

Full Stack Software Engineer at Simpoo Codes

April 1, 2023 - October 3, 2025

Led end-to-end development for multiple projects including Simpoo Business and CosmoRemit. Optimized front-end rendering through virtualization and lazy loading, established SEO practices, and implemented new features. Built and integrated RESTful APIs, improving data processing and overall application performance. Drove client satisfaction through timely delivery and effective issue resolution.

Full Stack Software Engineer at Olotu Square

August 1, 2021 - October 3, 2025

Led end-to-end development for Hilltop Cooperative and Split Buy projects. Increased user engagement by 15% through feature delivery in PHP/Laravel. Automated deployment processes with GitHub Actions. Integrated third-party APIs (Recova, Indicina, Paystack, Okra, Mono) to enhance functionality. Applied SOLID principles and atomic design patterns for maintainable code. Managed dedicated virtual hosting, optimizing performance, security, and scalability.

Senior Software Engineer at Token Metrics

November 1, 2024 - January 1, 2026

Migrated the research blog from WordPress to Next.js + Strapi; built an AI crypto chatbot using OpenAI SDK and PostgreSQL; reduced frontend load times by ~30% via code splitting, caching, and lazy loading; decomposed monolithic features into smaller services; led governance & staking dashboard delivery from build to production; resolved production issues via Sentry and QA, cutting reported bugs by ~90%; mentored engineers and reviewed PRs to maintain code quality and delivery speed.

Technical Lead at Fuelsgate

August 1, 2024 - May 1, 2025

Design ed and owned the application architecture with a focus on scalability and maintainability; introduced SOLID and Atomic Design; set up Storybook and Postman docs; improved performance using caching, code splitting, and memoization; optimized React state management; deployed to DigitalOcean and Vercel with automated releases via GitHub Actions; provided technical guidance and reviews to ensure best practices across the team.

Fullstack Software Engineer at Pro Devs

March 1, 2023 - April 1, 2024

Built and shipped multiple products from idea to production; developed a Chrome extension with OpenAI, doubling platform user adoption; built and optimized APIs with Node.js and Laravel, improving performance; integrated payments, verification, and analytics services; improved frontend performance by ~40% through caching and asset optimization; delivered major project one month early and handled client demos and feedback.

Frontend Software Engineer at CosmoRemit

May 1, 2022 - April 1, 2023

Led frontend development of a cross-border remittance platform using React and Redux; built Pay-in/Pay-out flows and integrated providers like Thunes and Monova; built admin dashboard for transactions, users, rates, and KYC/AML; optimized performance for high-volume transactions with memoization and lazy loading; collaborated with backend, DevOps, and compliance teams.

Fullstack Software Engineer at SimpooBusiness

September 1, 2021 - April 1, 2023

Led frontend development and full-stack work; improved frontend performance by ~30% using virtualization and lazy loading; implemented SEO and accessibility best practices; translated Figma designs into responsive UIs; improved API response times through caching and query optimization.

Fullstack Software Engineer at Olotu Square

November 1, 2019 - August 1, 2021

Increased engagement by 15% on a Laravel-based cooperative platform; integrated payment and verification APIs; automated deployments with GitHub Actions; improved code quality using SOLID and modular design.

Senior Software Engineer at Token Metrics, USA

November 1, 2024 - January 1, 2026

Migrated the research blog from WordPress to Next.js + Strapi, improving performance, SEO, and developer workflow. Built an AI crypto chatbot using OpenAI SDK and PostgreSQL to surface research insights. Reduced frontend load times by ~30% via code splitting, caching, and lazy loading. Broke down monolithic features into smaller services and decoupled APIs from the Next.js app. Led the Governance & Staking dashboard delivery from build to production. Resolved production issues via Sentry and QA, cutting reported bugs by ~90%. Named Employee of the Month (3x). Mentored engineers and reviewed PRs to maintain code quality and delivery speed.

Technical Lead at Fuelsgate, Nigeria

August 1, 2024 - May 1, 2025

Designed and owned the application architecture with a focus on scalability and maintainability. Introduced SOLID and Atomic Design, improving code reuse and consistency. Set up Storybook and Postman docs, speeding onboarding and collaboration. Improved performance using caching, code splitting, and memoization. Optimized React state management (Context, useMemo, useCallback). Deployed to DigitalOcean and Vercel and automated releases with GitHub Actions. Provided technical guidance and reviews to ensure best practices across the team.

Frontend Software Engineer at Shortpoint, USA

May 1, 2024 - July 1, 2024

Improved performance and structure in a large React codebase. Contributed to a monorepo with component-driven architecture, reducing technical debt. Optimized Redux usage for smoother UI and faster load times. Worked closely with QA to ship fixes and features, increasing positive user feedback by 20%. Participated in sprint planning, code reviews, and daily standups.

Fullstack Software Engineer at Pro Devs, Nigeria

May 1, 2023 - April 1, 2024

Built and shipped multiple products from idea to production. Developed a Chrome extension with OpenAI, doubling platform user adoption. Built and optimized APIs with Node.js and Laravel, improving performance by ~25%. Integrated payment, verification, and analytics services. Improved frontend performance by ~40% through caching and asset optimization. Delivered a major project one month early and handled client demos and feedback.

Frontend Software Engineer at CosmoRemit, Australia

May 1, 2022 - April 1, 2023

Led frontend development of a cross-border remittance platform using React and Redux. Built Pay-in / Pay-out flows and integrated providers like Thunes and Monoova. Developed an admin dashboard for transactions, users, rates, and KYC/AML. Optimized performance for high-volume transactions with memoization and lazy loading. Worked closely with backend, DevOps, and compliance teams.

Fullstack Software Engineer at SimpooBusiness, Nigeria

September 1, 2021 - April 1, 2023

Improved frontend performance by ~30% using virtualization and lazy loading. Implemented SEO and accessibility best practices. Translated Figma designs into responsive UIs. Improved API response times through caching and query optimization.

Fullstack Software Engineer at Olotu Square, Nigeria

November 1, 2019 - August 1, 2021

Increased engagement by 15% on a Laravel-based cooperative platform. Integrated payment and verification APIs (Paystack, Okra, Mono, Indicina). Automated deployments with GitHub Actions. Improved code quality using SOLID and modular design.