Hillary Onyechekwa

Software Engineer & Technical Educator

LinkedIn | GitHub

About

Hillary Onyechekwa is a full-stack Software Engineer and technical educator with 5 years of experience, specializing in React, Next.js, Node.js, and Nest.js. Proven expertise in developing robust, scalable web applications and enhancing user experiences across the full development stack. Complemented by a passion for mentorship, guiding emerging developers and fostering career advancement in the technology sector.

Work Experience

JavaScript/React Developer

ECO Africa Web Platform | Contract/Fulltime

Jan 2025 - Jun 2025

As a JavaScript/React Developer at ECO Africa, Hillary Onyechekwa enhanced platform performance and maintainability through extensive front-end and full-stack development, ensuring robust user experiences and efficient deployment workflows.

  • Optimized key React components, including ProfileProjects and PostProblems, by refactoring code and implementing optional chaining, significantly enhancing readability, maintainability, and code safety.
  • Enhanced UI/UX across multiple views by optimizing DOM structure and removing obsolete HTML tags, ensuring consistent, accessible, and responsive user interfaces.
  • Boosted codebase maintainability and development efficiency by systematically removing deprecated code, commented sections, and redundant logic, streamlining onboarding for new team members.
  • Directed and participated in critical Git operations, including merging main, staging, and feature branches, to resolve conflicts and ensure seamless integration of new features for smooth deployment workflows.
  • Improved project code quality by proactively identifying and resolving code smells, redundant code, and type inconsistencies, reducing bugs and simplifying debugging processes.

Full Stack Developer

Quivy – Giveaway Management Application | Contract

Feb 2025 - May 2025

As a Full Stack Developer, Hillary Onyechekwa designed, developed, and deployed Quivy, a comprehensive giveaway management application, leveraging modern TypeScript/React frontend and a robust Node.js/PostgreSQL backend.

  • Architected and implemented a full-featured giveaway management web application, leveraging a modern TypeScript/React frontend and a robust Node.js/TypeScript backend.
  • Developed a responsive, user-friendly frontend with Next.js, leveraging advanced React features and Next.js routing for efficient giveaway management and participation.
  • Built scalable RESTful APIs using Node.js and Express, integrating PostgreSQL for secure and efficient data storage and handling.
  • Automated frontend deployment and hosting via Vercel, ensuring seamless updates, high availability, and optimal performance.
  • Contributed to open-source initiatives by developing comprehensive documentation and enforcing modern development best practices, including testing and modular code.

Frontend Developer / Contributor

Ibudo - Ecommerce Platform | Contract

Dec 2024 - Dec 2024

As a Frontend Developer at Ibudo, Hillary Onyechekwa contributed to a modern e-commerce platform by refactoring serverless functions and enhancing UI components, ensuring robust performance and improved user experience.

  • Developed and maintained a robust e-commerce web application utilizing React, TypeScript, and Vite, incorporating serverless architecture and ES Lint for high code quality.
  • Enhanced application scalability and performance by refactoring serverless functions, improving backend efficiency and maintainability.
  • Maintained and updated the application codebase to current industry standards, resolving type definition issues and significantly enhancing overall code quality.
  • Optimized user experience by redesigning modal views and other UI components, resulting in improved clarity and enhanced responsiveness across the platform.

Remote Assistant Team Lead & Project Manager

Factum Academy, Factum Africa | Fulltime

Jun 2024 - Nov 2024

As Remote Assistant Team Lead & Project Manager at Factum Academy, Hillary Onyechekwa spearheaded operational planning, content strategy, and daily task coordination to enhance program effectiveness and achieve organizational goals.

  • Collaborated with leadership to define academy structure and operations, ensuring strategic alignment with organizational goals.
  • Developed a structured operational guide that streamlined strategies, improving program consistency and effectiveness.
  • Established a comprehensive content plan with the marketing team, leveraging Instagram and LinkedIn to enhance visual marketing and professional engagement.
  • Managed daily operations and coordinated team members, ensuring effective task execution and timely completion of deliverables.

Faculty/Coding Instructor

Aptech Teaching Institute | Fulltime

Jan 2022 - Feb 2023

As a Faculty/Coding Instructor at Aptech Teaching Institute, Hillary Onyechekwa educated students on web development fundamentals and enhanced curriculum, resulting in significant improvements in student performance.

  • Delivered comprehensive instruction on fundamental web application development, covering HTML, CSS, and JavaScript.
  • Revamped curriculum structure and assessment styles, leading to a demonstrable 20% increase in student performance.
  • Mentored students for institute-wide competitions, fostering skill development and competitive spirit.
  • Collaborated with administration to facilitate student enrollment and manage examination logistics.

Full-stack Developer

Fundamental Technology Chemicals | Contract

Jun 2022 - Sep 2022

As a Full-stack Developer at Fundamental Technology Chemicals, Hillary Onyechekwa developed and maintained the company website, significantly improving user experience and driving business growth through enhanced UI and performance.

  • Served as a Full-stack Engineer, responsible for end-to-end development and maintenance of the company website, including implementing critical User Interface designs.
  • Developed and maintained a user-friendly, responsive website UI in React, driving a 15% increase in site traffic and a 20% rise in sales conversion.
  • Collaborated closely with the design team to ensure pixel-perfect implementation of complex user interface designs.
  • Engineered and maintained key user interaction features using JavaScript, boosting application performance by 25%.

Software Engineer and IT Consultant

Springs Experiential Marketing Agency

Feb 2022 - Jun 2022

As a Software Engineer and IT Consultant at Springs Experiential Marketing Agency, Hillary Onyechekwa enhanced web user interfaces and implemented CI/CD pipelines, significantly improving user traffic and operational efficiency.

  • Collaborated with the design team to achieve pixel-perfect implementation of user interface designs.
  • Re-engineered the web user interface using HTML and CSS, resulting in a 15% increase in user traffic due to improved responsiveness and user-friendliness.
  • Implemented interactive JavaScript features, achieving faster load times and overall improved application performance.
  • Designed and implemented a continuous integration pipeline, significantly accelerating content and marketing updates on the website.
  • Deployed a more efficient DevOps solution for website hosting, optimizing operational workflows.

Contract/Freelance Developer

Red-I Media | Contract/Fulltime

Feb 2021 - Apr 2021

As a Contract/Freelance Developer for Red-I Media, Hillary Onyechekwa developed web applications, defining client requirements and ensuring quality through rigorous testing.

  • Developed and delivered a custom web application for Redi Studios, meeting specific client requirements.
  • Analyzed new client requirements, defined clear use cases, and maintained a robust local testing environment to ensure quality.

Education

Computer Science

Abraham Adesanya Polytechnic

Jan 2016 - Dec 2016

Volunteer

Coding Instructor/Mentor

The Smartan House

Feb 2021 - Apr 2024

As a Coding Instructor/Mentor at The Smartan House, Hillary Onyechekwa delivered comprehensive web development instruction and provided strategic career guidance to aspiring developers, fostering foundational knowledge and professional growth.

  • Delivered comprehensive instruction on fundamental web application development concepts, establishing strong foundational knowledge for aspiring developers.
  • Provided strategic career guidance and personalized learning pathways to mentees, helping them navigate professional development and skill acquisition in the technology sector.

Publications

Adent Of Rust: Day One

Hashnode

Dec 2024

Day one of advent of rust challenge seems to be just a warm up for the rest of the challenge. Something simple to get the cog started with I agree with. The Challenge, imitating the style of the original Advent of code challenge bring something about a mishap in the abodes of Sir Kris the Kringle.

Control Flow in Rust

Hashnode

Feb 2024

A technical article detailing the various control flow mechanisms available in Rust.

Functions and Enums in Rust

Hashnode

Feb 2024

An article exploring the concepts of functions and enums within the Rust programming language.

Creating Shapes with SVGs

hashnode

Apr 2021

An instructional article on how to create and manipulate shapes using Scalable Vector Graphics (SVGs).

Languages

English (Conversational)

Skills

Programming Languages

  • JavaScript
  • TypeScript
  • HTML
  • CSS

Frameworks & Libraries

  • React
  • Next.js
  • Node.js
  • Express.js
  • Nest.js
  • Redux
  • Vite

Databases

  • PostgreSQL

APIs & Protocols

  • REST APIs
  • GraphQL

Testing

  • Mocha
  • Jest
  • Test Automation

Version Control & CI/CD

  • Git
  • GitHub
  • CI/CD
  • Deployment Workflows
  • Vercel

Architectural Patterns

  • Serverless Architecture
  • Modular Design
  • State Management

Methodologies & Practices

  • Agile Development
  • Code Review
  • UI/UX Design
  • Technical Documentation
  • Code Quality

Emerging Technologies

  • Rust
  • Systems-level Programming