Collins Mathenge- linkedin.com/in/collins-mathenge
KEY QUALIFICATIONS
I am a software development professional with a Bachelor of Science in Software Development from KCA University and five years of
experience. Skilled in web design, development, and digital marketing, with proficiency in HTML5, CSS, JavaScript, PHP, C#, CMS
platforms, and modern frameworks like React and Angular. As a forward-thinking UI/UX Designer at Ethos Kenya, I contributed to
improved user experiences by leveraging data insights and conducting user testing. At SE Marketing, I managed cross-border projects in
Kenya, England, and Germany, adapting to diverse cultural practices. As a Web Developer at Pertom Digital, led a team of nine
professionals to design and implement innovative web solutions. The goal is to contribute to organizational growth while expanding
technical and interpersonal skills.
ACADEMIC PROFILE
KCA UNIVERSITY
Bachelor of Science in Software Development
Nairobi, Kenya
WORKING EXPERIENCE
International Voyager
New Jersey, United States
Technical Project Manager
August 2025 – Ongoing
• Managed and executed 2+ cross-functional digital projects across engineering, design, and marketing teams, achieving 95% on-time
delivery.
• Translated complex business requirements into technical specifications and clear timelines, improving stakeholder alignment by
40%.
• Oversaw QA and front-end implementation using CSS, Drupal, HubSpot CRM, and Barilliance, ensuring seamless user
experiences across platforms.
• Conducted A/B tests and usability reviews, resulting in a 20% increase in conversion rates and improved customer engagement.
• Coordinated with design teams using Figma to implement UI/UX improvements, reducing user errors by 15% and boosting task
completion rates.
• Established standardized project tracking in Asana and Jira, improving reporting accuracy and reducing status update delays by
30%.
• Oversee front-end validation on CSS, Drupal, HubSpot CRM and Barilliance implementations; verify cross-device/browser
compatibility using BrowserStack and manual device checks to catch layout and functional regressions pre-release.
WP Support Specialists
Glasgow, Scotland
Web Developer and Support
May 2025 – July 2025
• Resolved over 50 plugin conflict issues across client WordPress sites, including WooCommerce and page builders like Elementor
and WPBakery, reducing site downtime and ensuring seamless performance with minimal disruption.
• Diagnosed and fixed critical site outages such as white screen errors by identifying PHP or memory issues, restoring full site
functionality within 1–2 hours in 90% of cases.
• Optimized over 20 websites for speed and performance using WP Rocket, image compression, lazy loading, and database cleanup,
resulting in an average PageSpeed score improvement from 60 to 90+ and load time reduction by up to 50%.
• Developed and maintained custom WordPress sections using ACF (Advanced Custom Fields) and reusable templates, enabling
nontechnical clients to update global content across 10+ pages effortlessly.
• Successfully replaced or patched abandoned and customized plugins on high-traffic client sites, ensuring core functionality was
retained while resolving PHP compatibility and security risks.
ThickLabel LLC
Atlanta, GA, United States of America
Graphic Designer - Figma Expert
December 2024 – February 2025
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Designed and launched over 12 innovative weekly ad campaigns using Figma, enhancing brand visibility by 40% and attracting an
average of 5,000 new user engagements per ad cycle.
• Updated and optimized existing ad layouts in Figma, resulting in a streamlined design process that reduced production time by 30%
while consistently adhering to brand guidelines across all platforms.
• Collaborated with the marketing team to analyze user feedback on ads, implementing data-driven enhancements that improved
click-through rates by 25%, significantly boosting overall campaign effectiveness.
• Spearheaded a comprehensive review of brand guidelines, enhancing visual consistency across 150+ advertisements, which resulted
in a 40% increase in consumer recognition and engagement metrics.
EnergyMD
Olympia, WA, United States of America
Tech and Marketing Assistant
May 2024 – September 2024
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Updated and optimized all aspects of the GoHighLevel CRM, including websites, funnels, pages, and emails, resulting in a 30%
increase in customer engagement metrics.
Managed email campaigns and affiliate programs within GoHighLevel, leading to a 20% increase in click-through rates and a 15%
increase in affiliate sign-ups.
Streamlined automation processes using Zapier to improve efficiency and accuracy, reducing manual tasks by 40% and saving an
estimated 10 hours per week.
Identified and resolved software issues for over 100 clients, resulting in a 95% increase in customer satisfaction ratings.
Utilized graphic design skills to create visually appealing marketing materials, increasing engagement by 20%.
Ethos Kenya
UI/UX Designer
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Remote
Jun 2023 – March 2024
Working closely with stakeholders to create wireframes and interactive prototypes that effectively communicate design concepts,
resulting in a 30% reduction in development time for new features.
Utilizing data-driven insights to inform UI/UX design decisions, resulting in a 15% decrease in user errors and an improved overall
user experience.
Translating complex technical concepts into visually appealing and interactive designs, resulting in a 30% decrease in user error rates
and an increase in overall usability.
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Developed wireframes, mockups, and interactive prototypes for a new mobile app project, resulting in a 40% increase in user
engagement based on user testing feedback.
Conducting extensive user testing sessions, collecting feedback from over 100 users, and implementing design improvements that
result in a 20% increase in task completion rates.
Collaborated with cross-functional teams to analyze usability testing results and implement iterative design improvements, resulting
in a 30% decrease in user errors and a 40% increase in task completion rates.
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SE MARKETING
Web Designer and Developer
Cardiff, United Kingdom
November 2022 - May 2023
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Developed and implemented innovative website designs for clients, resulting in a 50% increase in user engagement and a 30%
decrease in bounce rate.
• Collaborated with cross-functional teams to troubleshoot and resolve API integration issues, resulting in a 95% reduction in system
downtime.
• Enhanced user experience by creating interactive interfaces and implementing user-friendly navigation systems, leading to a 20%
increase in average session duration.
• Conducted in-depth user research studies, including surveys and interviews, to gather insights on customer preferences and
behavior, resulting in a 20% increase in user satisfaction metrics.
• Revamped website layout and navigation based on the latest UI/UX design trends, leading to a 15% decrease in bounce rate.
• Implemented responsive design principles across all web pages, resulting in a 30% increase in mobile traffic conversions.
• Translate complex business requirements into clear test cases and checklists; perform exploratory, regression and UAT across web
and mobile to validate feature behaviour and edge cases.
• Provided technical support to clients and the marketing team, resulting in a 20% increase in customer satisfaction ratings.
Streamlined website creation process from domain registry to SSL certificates and ensured website security.
FREELANCE
Nairobi, Kenya
Web Designer and Developer
April 2022- November 2022
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Developed and implemented innovative web design solutions using HTML5, CSS, and JavaScript, resulting in a 50% increase in
website traffic for clients.
• Utilized user experience (UX) principles to create intuitive navigation and visually appealing designs for custom websites using
Figma and Sketch.
• Developed innovative web applications integrating RESTful JSON APIs, resulting in a 40% increase in user engagement metrics.
• Produced captivating and user-friendly graphic designs for websites, digital interfaces, and print materials based on project briefs
using Canva and Photoshop
• Collaborated with clients to understand their specific needs and preferences, resulting in a 90% client satisfaction rate for delivered
websites.
• Implemented user-centered design principles to create intuitive and aesthetically pleasing interfaces, leading to a 50% decrease in
bounce rate on the company website
• Managed and executed 10 short-term projects with tight deadlines, resulting in an average completion time 20% faster than the
original project timeline.
• Collaborated with cross-functional teams to gather user feedback and iterate on designs, resulting in a 25% reduction in
development time and cost.
• Utilized project management tools to effectively communicate with remote teams, leading to a 15% increase in productivity and
ontime delivery of projects such as Asana and Slack.
MINISTRY OF ICT, INNOVATION AND YOUTH AFFAIRS
Nairobi, Kenya
ICT Support attaché
January 2022-March 2022
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Integrate and configure computer networking for best performance.
Troubleshoot and repair hardware, operating systems, and applications.
Help install and support all ICT hardware and software.
PERTOM DIGITAL
Software Developer and Digital Marketer
Nairobi, Kenya
January 2020-November 2021
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Developed web-based applications using HTML5, CSS, JavaScript, PHP, MySQL, front-end and back-end development.
Performed Search Engine Optimization and Keyword Research.
Designed and executed innovative digital marketing strategies utilizing plugins such as Yoast SEO, leading to a 25% growth in
organic website traffic.
• Optimized website design and user experience, resulting in a 200% increase in average session duration on the company website.
• Utilized project management software to track progress and milestones for long-term projects, ensuring on-time delivery with a
success rate of 95%.
• Utilized GitHub for version control and collaboration with a team of developers, resulting in a 20% increase in project efficiency.
• Utilized data-driven insights from Google Analytics to identify key demographic segments, resulting in a 175% growth in organic
traffic from the target audience.
CRAFT SILICON
Nairobi, Kenya
Software Developer Intern
January - May 2019
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Performed software integration, debugging, and testing.
Developed and executed innovative software solutions using the .NET framework, resulting in a 30% increase in application
performance metrics
Implemented responsive design techniques, resulting in a 50% improvement in mobile user experience and increasing overall
customer satisfaction by 25%.
Developed or validated testing schedules addressing all browsers and devices to ensure that various computers can access content
Collaborated with cross-functional teams to identify and fix critical software issues, leading to a 15% improvement in overall
system performance.
Identified and resolved 15 technical issues on the company website, resulting in a 50% improvement in website functionality.
MY ONLINE PORTFOLIO
https://bit.ly/collins-online-portfolio
