Technical Apparel Consulting for
Growing Fashion Brands
Streamline production documentation,
improve sizing consistency, and
scale confidently
with expert support tailored to meet the needs of your brand.
Meet Jane Hartwick.
20+ years turning design vision into production reality
with international brands,
scaling startups,
& established niche labels.
My foundation is technical design.
My expertise is product systems.
I translate creative vision into structured, production-ready execution — and build the development frameworks that support consistent growth.
What I Do
I operate at the intersection of design, technical development, and production.
I help founder-led apparel brands:
Convert design intent into precise, factory-ready tech packs
Structure development workflows to reduce sampling rounds
Strengthen grading logic and size-range consistency
Align designers, sample makers, and manufacturers
Integrate post-launch performance data into future collections
What Changes
Fewer costly errors
Reduced revision cycles
Stronger fit consistency across sizes
More predictable production outcomes
A development process capable of scaling
My Role
I listen carefully.
I identify structural gaps.
I implement practical, repeatable solutions.
The result is not just better documentation.
It’s a structured product system that frees you to lead strategically instead of managing preventable errors.
If you are…
expanding your size range
refining grading for fit consistency
preparing for larger production runs
navigating multiple sampling rounds on most styles
unsure whether your tech packs are production-ready
starting to notice cracks in your product dev systems
I encourage you
…to book a consult call with me for a brief, focused chat.
I’ll work with you to assess where friction is occurring & outline a practical path forward.
My role is to help you identify what needs adjustment — and what doesn’t — so your product development process becomes structured, predictable, and aligned with your growth.
Words from Founders I’ve Worked With
“I cannot say enough good things about Jane. Not only as our Head of Product & technical designer, but also as a human.
She has been such an invaluable asset to onewith. We have grown a lot this year, and Jane has been an instrumental part of that growth.
Her professionalism, her capabilities, her creativity, and her can-do attitude are simply unmatched.”
“Jane is a rockstar. Jane is one of the most hard working and creative people I know. She throws herself into every project with passion. She moves quickly and is incredibly adaptable.
Sheertex wouldn’t be what it is today without Jane. If you have the opportunity to work with her - jump on it.”