I make complicated careers easier to understand.
I’m Zechariah Borden, the writer and strategist behind Core Career Services.
My work sits at the intersection of professional writing, career strategy, positioning, and one deceptively difficult question:
How do we explain what you actually bring to the table?
The short version
I am a Certified Professional Résumé Writer (CPRW) and Certified Digital Career Strategist (CDCS) with a professional and academic background in writing.
I have supported 1,500+ professionals across industries, functions, seniority levels, and career transitions, while maintaining 100% Upwork Job Success and consistent five-star client feedback.
My clients have included executives, technology leaders, product professionals, business operators, military veterans, career changers, and specialists working inside organizations ranging from startups to some of the largest companies in the world.
Why this work fits me
I like messy careers.
Not because people enjoy having messy careers.
Because the interesting work often begins when the obvious template stops working.
Maybe your title understates your responsibilities.
Maybe your strongest contribution crosses three functions.
Maybe the work sounds ordinary until someone understands the scale.
Maybe you are moving into an industry that uses different language for skills you already have.
Maybe you simply have twenty good stories and need to figure out which five matter.
That is a writing problem.
It is also a strategy problem.
And I enjoy both.
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