Jeff Mwangi
@jeffmwangi1
Experienced writer specializing in SEO-optimized content, technical writing, and editing.
What I'm looking for
I am an experienced writer with five years creating SEO-optimized content, technical documentation, and compelling copy for U.S. companies, nonprofits, and global clients. I have a proven record editing and proofreading complex academic and research materials, drafting grant proposals, and improving client engagement through focused digital strategy.
My background includes freelance work for platforms such as Upwork and HubSpot Partner projects, a remote contract as a copywriter with Blue Sky Digital Marketing, and technical writing and data annotation for AI projects with Appen and similar vendors. I prioritize clarity, accuracy, and collaboration, and I consistently deliver measurable improvements in online visibility and data quality.
Experience
Work history, roles, and key accomplishments
Freelance Writer & Editor
Upwork / Fiverr / Freelancer.com / ContentWriters.com / HubS
Jan 2021 - Present (5 years)
Produce SEO-optimized content and edit/proofread materials for U.S. and global clients, improving online visibility and engagement for companies and nonprofits.
Copywriter & Proofreader
Blue Sky Digital Marketing
Mar 2023 - Sep 2024 (1 year 6 months)
Created copy and social media content for SMB clients and edited marketing materials, collaborating with SEO and design teams to increase client engagement by 35%.
Technical Writer & Data Entry Assistant
Appen / Amazon Mechanical Turk / TELUS International
Jun 2020 - Dec 2022 (2 years 6 months)
Authored technical documentation and guidelines for AI projects and performed data entry, transcription, and QA, achieving over 98% accuracy in datasets and labeling.
Education
Degrees, certifications, and relevant coursework
Google / Coursera
Certificate, Data Analytics and Content Strategy
Completed the Data Analytics and Content Strategy certificate through Google Digital Skills for Africa on Coursera in August 2024.
University of California, Berkeley Extension
Certificate, Technical Writing
Completed a certificate program in Technical Writing at UC Berkeley Extension in March 2023.
Arizona State University
Bachelor of Arts, Communication and English Writing
Completed a Bachelor of Arts focusing on Communication and English Writing through ASU's online program, graduating in May 2022.
Availability
Location
Authorized to work in
Job categories
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