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I am Samuel Ezeh, a software engineer focused on building scalable, user-centric web applications across fintech, social commerce, and SaaS platforms. I bring a proven track record of product innovation and engineering excellence, with deep expertise in React, Next.js, TypeScript, and Spring Boot, and a strong commitment to code quality, performance, and user experience. Known for strategic thinking, problem-solving, and a growth-oriented mindset, I thrive in cross-functional teams, shipping reliable features, and continuously improving systems for speed and observability.…I am Samuel Ezeh, a software engineer focused on building scalable, user-centric web applications across fintech, social commerce, and SaaS platforms. I bring a proven track record of product innovation and engineering excellence, with deep expertise in React, Next.js, TypeScript, and Spring Boot, and a strong commitment to code quality, performance, and user experience. Known for strategic thinking, problem-solving, and a growth-oriented mindset, I thrive in cross-functional teams, shipping reliable features, and continuously improving systems for speed and observability.

Samuel Ezeh

Web Developer, Programmer, Developer, +3

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I am Samuel Ezeh, a software engineer focused on building scalable, user-centric web applications across fintech, social commerce, and SaaS platforms. I bring a proven track record of product innovation and engineering excellence, with deep expertise in React, Next.js, TypeScript, and Spring Boot, and a strong commitment to code quality, performance, and user experience. Known for strategic thinking, problem-solving, and a growth-oriented mindset, I thrive in cross-functional teams, shipping reliable features, and continuously improving systems for speed and observability.…I am Samuel Ezeh, a software engineer focused on building scalable, user-centric web applications across fintech, social commerce, and SaaS platforms. I bring a proven track record of product innovation and engineering excellence, with deep expertise in React, Next.js, TypeScript, and Spring Boot, and a strong commitment to code quality, performance, and user experience. Known for strategic thinking, problem-solving, and a growth-oriented mindset, I thrive in cross-functional teams, shipping reliable features, and continuously improving systems for speed and observability.

Available to hire

I am Samuel Ezeh, a software engineer focused on building scalable, user-centric web applications across fintech, social commerce, and SaaS platforms. I bring a proven track record of product innovation and engineering excellence, with deep expertise in React, Next.js, TypeScript, and Spring Boot, and a strong commitment to code quality, performance, and user experience.

Known for strategic thinking, problem-solving, and a growth-oriented mindset, I thrive in cross-functional teams, shipping reliable features, and continuously improving systems for speed and observability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Frontend Engineer at Calm Global Infotech

March 1, 2025 - Present

Architected and built the Electronic Health Management System (EHMS), a platform designed to digitally manage healthcare operations like patient records, appointments, and prescriptions. Led migration of legacy codebase from JavaScript to TypeScript, improving code quality and reducing deployment errors by 50%. Scaled engineering efforts by implementing mono-repo and micro-frontend architecture, improving feature request time to production by 30%. Designed and implemented drug prescriptions UI/UX, reducing queue process by 40%. Implemented responsive design for multiple device types. Conducted code reviews, ensuring high code quality and best practices. Set up deployment pipeline on MS Azure for efficient CI/CD.

Software Engineer, Frontend at Interswitch Group

April 30, 2025 - July 19, 2025

Designed and implemented software solutions using React.js, JavaScript, and TypeScript. Managed end-to-end projects ensuring client demands were met. Resolved critical bugs improving application stability and user satisfaction. Integrated payment gateways and subscription models, resulting in a 15% revenue increase. Designed and implemented Multi-Factor Authentication (MFA) system, enhancing security and reducing unauthorized access by 50%. Integrated Google Sign-On (OAuth 2.0) to simplify login and boost user registration.

Frontend Developer at Optimus Pro

October 1, 2023 - July 19, 2025

Implemented high-value features such as real-time notifications, role-based access control, and advanced search, increasing user engagement by 30% and customer retention by 20%. Established a testing framework with React Testing Library and Jest achieving 90% test coverage. Applied responsive design to improve cross-device compatibility, boosting mobile engagement by 25%. Developed scalable web application suite for end-to-end food delivery and logistics management. Optimized dashboards using Next.js, Tailwind CSS, and React Query, reducing page load times by 60% and improving user satisfaction by 35%.

Frontend Engineer at Calm Global Infotech

March 1, 2025 - Present

Architected and built the Electronic Health Management System (EHMS), a platform designed to digitally manage healthcare operations like patient records, appointments, and prescriptions. Led the migration of the legacy codebase from JavaScript to TypeScript, improving code quality and reducing deployment/pipeline errors by 50%. Scaled engineering efforts by implementing mono-repo and micro-frontend architecture, reducing code duplication and speeding up feature request time to production by 30%. Designed and implemented drug prescriptions UI/UX, reducing queue processing by 40%. Implemented responsive design across devices, conducted code reviews, and set up deployment pipelines on MS Azure for efficient CI/CD.

Software Engineer, Frontend at Interswitch Group

April 30, 2025 - July 19, 2025

Designed and implemented software solutions using React.js, JavaScript, and TypeScript. Managed projects end-to-end ensuring client requirements were met. Resolved critical bugs to improve application stability and user satisfaction. Integrated payment gateways and subscription models, boosting platform revenue by 15%. Designed and integrated a Multi-Factor Authentication system, enhancing security and halving unauthorized access incidents. Additionally, integrated Google Sign-On to simplify login and increase registrations.

Frontend Developer at Optimus Pro

October 31, 2023 - July 19, 2025

Implemented key features including real-time notifications, role-based access control, and advanced search, increasing user engagement and customer retention. Established a testing framework achieving 90% test coverage for reliability. Applied responsive design, boosting mobile engagement by 25%. Developed scalable web application suites for food delivery and logistics management for high-profile clients. Optimized internal dashboards reducing page load times by 60% and improving user satisfaction.

Full Stack Engineer at TraderApp

August 1, 2025 - Present

Architect, design, and maintain microservices powering the trading engine. Implement event-driven systems using AWS SQS (queuing, dead-letter handling, message retries). Build serverless workflows with AWS Lambda to process trades, alerts, and asynchronous tasks with minimal overhead. Design efficient data storage and retrieval strategies in AWS S3 for logs, trade history, and compliance storage. Optimize APIs for sub-100ms response times to deliver a seamless trading experience. Continuously profile and improve system performance, aiming for 20–30% performance improvements per quarter in throughput and latency reduction. Implement monitoring, alerting, and logging pipelines for high observability. Collaborate with frontend engineers, product, and DevOps to ship features reliably.

Frontend Engineer at Calm Global Infotech

August 1, 2025 - October 10, 2025

Architected and built the Electronic Health Management System (EHMS) to digitally manage healthcare operations like patient records, appointments, prescriptions, etc. Led migration of the legacy codebase from JavaScript to TypeScript, reducing deployment/pipeline errors by 50% and boosting developer productivity. Scaled engineering with a mono-repo (Nx/Turborepo) and micro-frontend (Module Federation), reducing code duplication and improving feature-to-production time by 30%. Designed and implemented drug prescriptions UI/UX for consultations, reducing queue times by 40% and improving operational efficiency. Implemented responsive design and led code reviews; set up Azure-based CI/CD.

Software Engineer, Frontend at Interswitch Group

April 1, 2025 - October 10, 2025

Designed and implemented software solutions using React.js, JavaScript, TypeScript, and other frontend tools. Managed E2E projects to meet client demands. Resolved critical bugs related to responsiveness, caching, and API integrations, improving stability and user satisfaction. Integrated payment gateways and subscription models, driving a 15% increase in platform revenue. Designed and integrated MFA using Google/Microsoft Authenticator, enhancing security and reducing unauthorized access incidents by 50%. Integrated Google Sign-On (OAuth 2.0), simplifying login and increasing registrations.

Frontend Developer at Optimus Pro

October 1, 2023 - October 10, 2025

Implemented high-value features such as real-time notifications, role-based access control, and advanced search functionality, increasing user engagement by 30% and contributing to 20% growth in customer retention. Set up a robust testing framework using React Testing Library and Jest, achieving 90% test coverage. Implemented responsive design across devices, boosting mobile engagement by 25%. Delivered a scalable web application suite for end-to-end food delivery and logistics management, and optimized internal dashboards with Next.js, Tailwind CSS, and React Query, reducing page load times by 60%.

Full Stack Engineer at TraderApp

August 1, 2025 - Present

Frontend Engineer at Calm Global Infotech

August 1, 2025 - October 10, 2025

Architected and built the Electronic Health Management System (EHMS), a platform designed to digitally manage healthcare operations like patient records, appointments, prescriptions, etc. Led the migration of the legacy codebase from JavaScript to TypeScript, improving code quality, reducing deployment/pipeline errors by 50%, and enhancing developer productivity. Scaled engineering efforts by adopting a mono-repo (Nx and Turborepo) and micro-frontend (Module Federation) architecture for new applications, reducing code duplication and improving feature request time to production by 30%. Designed and implemented drug prescriptions UI/UX for consultations processing, reducing queue process by 40% and improving operational efficiency. Implemented responsive design for desktop, tablet, and mobile devices. Conducted code reviews and provided constructive feedback, ensuring high code quality and adherence to best practices. Set up deployment pipeline on MS Azure for proper and efficient CI/CD

Software Engineer, Frontend at Interswitch Group

April 1, 2025 - October 10, 2025

Designed and implemented software solutions using React.js, JavaScript, TypeScript, and other frontend tools. Managed a project through the E2E process and ensured the product met the client’s demands. Resolved critical bugs related to responsiveness, caching, and API integrations, improving application stability and user satisfaction. Integrated payment gateways and subscription models, driving a 15% increase in platform revenue. Designed and integrated a robust MFA system using industry-standard libraries and apps (Google/Microsoft Authenticator, custom OTP solutions), enhancing platform security and reducing unauthorized access incidents by 50%. Integrated Google Sign-On (OAuth 2.0) into the platform, simplifying the login process and increasing user registration rates.

Frontend Developer at Optimus Pro

October 1, 2023 - October 10, 2025

Implemented high-value features such as real-time notifications, role-based access control, and advanced search functionality amongst others, which increased user engagement by 30% and contributed to a 20% growth in customer retention. Set up a robust testing framework using React Testing Library and Jest, achieving 90% test coverage and ensuring high code quality and reliability. Implemented responsive design principles to ensure cross-device compatibility, resulting in a 25% increase in mobile user engagement. Developed, and delivered a scalable web application suite for end-to-end food delivery and logistics management, serving a high-profile client and streamlining their operations. Optimized internal dashboards using Next.js, Tailwind CSS, and React Query, reducing page load times by 60% and improving user satisfaction scores by 35%.