Product Developer (Seamless)

Gymshark, innovation is at the heart of our product creation process. We're looking for an experienced and passionate Product Developer (Seamless) to lead the development of our seamless men's and women's product categories, ensuring every product is delivered on time, meets our technical and quality standards, and performs for our global community.

Working at the centre of the product creation process, you'll collaborate with Design, Colour, Raw Materials, Fit, Quality, Sourcing, and supplier partners to bring innovative seamless products from concept through to production. This is an exciting opportunity for someone who combines deep seamless expertise with strong technical knowledge and exceptional project management skills.

WHAT YOU'LL DO.

As a Product Developer (Seamless), you'll take ownership of the end-to-end development process, ensuring products meet Gymshark's standards for fit, construction, performance, quality, sustainability, and compliance.

Key Responsibilities

• Lead and manage the end-to-end development of seamless products across men's and women's categories.
• Own and manage development critical paths, ensuring milestones and seasonal deadlines are achieved.
• Take responsibility for garment construction, fit, and overall product execution.
• Collaborate closely with Design and technical teams to ensure products align with design intent, fit standards, and performance requirements.
• Coordinate development activities across Colour, Raw Materials, Fit, Quality, and Sourcing teams.
• Act as the primary technical point of contact for all seamless product development topics.
• Partner with suppliers and manufacturers to ensure technical specifications, development timelines, and quality standards are met.
• Ensure products are tested appropriately and comply with all safety, legal, and regulatory requirements.
• Validate sustainability and performance claims throughout the development process.
• Proactively identify and resolve development challenges to minimise delays and maintain project momentum.
• Maintain accurate development documentation, including tech packs, approvals, and sealed samples.
• Provide regular progress updates to key stakeholders and leadership teams.

WHAT YOU'LL NEED.

Essential Skills & Experience

• Strong knowledge of garment construction, fit, and technical product development.
• Expertise in seamless product development and seamless manufacturing technologies.
• Strong understanding of product development critical paths and key milestones.
• Knowledge of colour development, raw material technologies, garment testing, and quality processes.
• Understanding of sustainability practices, product compliance requirements, and safety regulations.
• Experience working collaboratively with Design, Sourcing, Production, Quality, and supplier partners.
• Strong analytical and critical-thinking skills.
• Excellent organisational skills with the ability to manage multiple priorities and deadlines.
• High attention to detail and a proactive approach to problem-solving.
• Strong communication and stakeholder management skills.
• Experience using PLM systems, Excel, CAD software, and other product development tools.

Preferred Experience

• Advanced proficiency across Microsoft Office applications.
• Experience working within global manufacturing and sourcing environments.
• Strong understanding of activewear, sportswear, or performance apparel development.

Onsite Collaboration: Due to the hands‑on and highly collaborative nature of the work within our Product & Supply Chain team, we have a minimum expectation of three days per week onsite at our Gymshark HQ. This ensures we can work closely together to innovate, problem‑solve, and deliver world‑class products for our community.

BELONGING AT GYMSHARK.

Our mission is to be a place where everyone belongs. We’re an equal opportunities employer, and for us that means we always strive to be as inclusive as possible in all aspects of employment, right from your application. We’re committed to finding reasonable adjustments for candidates with specific needs or who have a disability during our recruitment process, and all applicants will be considered fairly and equally. We do not tolerate discrimination of any kind. If you’d like to request a reasonable adjustment please email

ABOUT US.

We’re here to unite the conditioning community. We believe that putting the sweat in today, prepares us for tomorrow. So, we give people the tools they need to reach further, go faster, be stronger. We celebrate those who show up – for themselves – to be their physical or mental best, whatever that means for them. It’s what we want for our community, and our team. A team that’s growing rapidly around the world. A collective of talented individuals working together to invent Gymshark’s future. Our plans are ambitious, and we’re looking for people who want to join us for the ride – our growth will be your growth.

THE PERKS.

Standard benefits include:

• Performance-based Bonus opportunity
• Funded Healthcare benefit
• 25 days holiday, additional day for your birthday & Bank Holidays
• Contributory Employer pension scheme
• Flexible benefits programme – including salary sacrifice EV scheme, dental insurance, cycle to work, tech scheme, holiday trading
• Gymshark Employee Discount & long service awards
• Access to High Street cashback and discounts
• Financial, Physical and Mental Wellbeing Support
• Enhanced Family Leave package
• Life Assurance

Office location specific benefits include (HQ/IQ):

• Gym Membership to The Lifting Club (LC)
• Onsite lunch provision & coffee bars
• EV charge points available

Note: The bonus program and benefits have certain eligibility requirements. Gymshark reserves the right to amend these programs in whole or in part at any time without advance notice.

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