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Jumbo Jeremy

@jumbojeremy

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Frontend Engineer specializing in React, TypeScript, and high-performance web applications.

Nigeria

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What I'm looking for

I seek frontend or fullstack roles focusing on performant, accessible web apps, collaborative teams, code quality, and opportunities to lead architecture and mentoring.

I am a Frontend Engineer with five years of experience building high-performance web applications across fintech, consulting, and market research. I focus on React, TypeScript, Next.js, and frontend architecture to deliver fast, accessible user experiences.

At Caladium Consulting I led a team to rebuild the company site with zero downtime and cut load times by over 50%, migrated a React codebase to Remix, improved TypeScript coverage to 95%, and implemented caching and server integrations that boosted performance and deployment speed.

I have driven performance and cost optimizations at multiple companies — reducing page load times by up to 40%, saving AWS costs, migrating assets to CDNs, and increasing conversions through responsive, accessible UI work. I also build backend integrations like Stripe payments, GraphQL CMS setups, and type-safe APIs.

I write technical content with a large readership and maintain several production projects, including personal and client sites optimized for SEO and scale. I collaborate closely with designers, stakeholders, and cross-functional teams to align technical solutions with business goals.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Caladium Consulting

Feb 2022 - Present (3 years 7 months)

Led a team to rebuild Caladium’s website reducing load times by over 50%, managed server integrations, and built blog and mailing systems to streamline content distribution; migrated Fedacash from CRA to Remix improving dev server speed 100% and TypeScript coverage to 95%.

React Remix TypeScript JavaScript Performance Optimization Web Server Integration Caching CI CD

Frontend Engineer

Gonje

Aug 2023 - Jan 2024 (5 months)

Integrated Stripe payments and refactored the frontend to reduce page load time by 40%, cut AWS costs by $600, migrated images to a CDN, and improved conversion rates by 25% and customer satisfaction by 35%.

React JavaScript Stripe CDN Performance Optimization Accessibility TypeScript

Frontend Engineer

UMScope

Oct 2021 - Dec 2022 (1 year 2 months)

Developed pages from wireframes and built a design-system-aligned frontend architecture with reusable React/Tailwind/TypeScript components, improving page load time by 15%.

React TypeScript Tailwind Component Design Frontend Architecture Performance Optimization

Fullstack Engineer

BidnBuy

Apr 2021 - Sep 2021 (5 months)

Rebuilt and modernized websites and APIs to improve efficiency by 40%, created type-safe APIs and reusable components reducing development time by 20%, achieving over 90% client satisfaction.

Fullstack Development API Design TypeScript React Testing

Web Developer

Candino West Africa Limited

Jan 2019 - Sep 2021 (2 years 8 months)

Managed email and server migrations without downtime, built custom survey platforms and a staging environment, and rebuilt the company site as a statically generated site improving SEO and web performance to 100%.

WordPress DevOps Performance Optimization SEO