Yarn & Materials Developer

Help shape the future of Gymshark Seamless innovation.

At Gymshark great seamless products start with exceptional yarns materials and technical innovation. Were looking for a knowledgeable and detail-orientedYarn & Materials Developer to support the end-to-end development and industrialisation of seamless yarns knit structures and material platforms from initial concept through to bulk production.

This role is critical in ensuring our seamless products meet the highest standards of performance quality durability fit innovation and sustainability while supporting the successful delivery of our seasonal collections. Youll work closely with Seamless Technical Development Knit Programming Product Development Design Colour Sourcing Quality yarn suppliers seamless manufacturing partners and machine technicians to develop industry-leading seamless products that help strengthen Gymsharks position as a global leader in performance apparel.

WHAT YOULL DO.

As aYarn & Materials Developer youll play a key role in translating product vision into technically feasible commercially scalable and performance-led seamless products ensuring development milestones are achieved on time and to the highest standard.

Key responsibilities include:

• Developing and industrialising seamless yarns knit constructions and material platforms across multiple product categories.
• Translating consumer needs such as sculpting support compression softness breathability opacity sweat management and comfort into innovative yarn and knit solutions.
• Supporting fibre selection yarn specification elastane construction covering methods feeder allocation yarn pathing and machine set-up decisions to achieve desired performance outcomes.
• Collaborating closely with Seamless Technical Development Knit Programming Product Development Design Colour and Sourcing teams throughout the development process.
• Partnering with yarn suppliers and seamless manufacturing partners to develop proprietary and commercially scalable seamless material solutions.
• Supporting the development of seamless knit architectures including rib mesh jacquard tuck float plating engineered ventilation waistbands under bust structures and body-mapped compression zones.
• Building supplier capability through technical collaboration performance reviews and continuous improvement initiatives.
• Supporting seamless-specific testing and validation programmes including stretch and recovery compression opacity dimensional stability abrasion resistance pilling colour fastness and wash durability.
• Interpreting laboratory wear trial and supplier testing data and converting findings into clear technical action plans.
• Integrating sustainability considerations into yarn material and product development to improve environmental performance without compromising product quality or functionality.
• Contributing to commercial engineering decisions involving yarn cost stitch complexity machine time lead times and manufacturing efficiency.
• Maintaining accurate technical documentation including yarn specifications knit construction records test reports supplier capability data and development libraries.
• Managing and developing seamless yarn stitch architecture body-mapping and material platform libraries.
• Supporting the creation of Gymshark-owned seamless platforms proprietary knit structures technical claims and supplier-exclusive developments.

WHAT YOULL NEED.

Essential Experience & Skills

• Minimum of 3 years experience in material development yarn development seamless development performance fabric development or related technical product development.
• Strong technical knowledge of seamless materials fibres yarns and knit constructions.
• Good understanding of seamless circular knitting technology preferably Santoni or equivalent machinery.
• Knowledge of yarn covering methods yarn draw-in processes feeder allocation plating yarn pathing and yarn tension principles within seamless circular knitting.
• Ability to assess how fibre composition yarn selection stitch architecture elastane construction and machine settings influence fit compression recovery opacity handfeel durability and production consistency.
• Strong understanding of seamless knit structures including rib mesh jacquard tuck float plating engineered ventilation and body-mapped support zones.
• Good understanding of garment technology seamless construction fit grading principles and body-zone performance requirements.
• Strong knowledge of laboratory testing and commercial testing standards for performance activewear and seamless products.
• Ability to interpret laboratory testing wear trial results and supplier performance data to identify opportunities and resolve technical challenges.
• Good understanding of colouration dyeing and finishing processes relevant to seamless yarns and garments.
• Experience working directly with yarn suppliers and seamless manufacturing partners throughout the development lifecycle.
• Strong understanding of sustainable practices within yarn material and product development.
• Excellent communication and stakeholder management skills with the ability to collaborate effectively across internal and external teams.
• Strong problem-solving skills and the ability to proactively identify risks and propose practical solutions.
• Excellent attention to detail organisation and technical documentation standards.
• Proficiency in Microsoft Office and PLM or similar product lifecycle management systems.
• Ability and willingness to travel when required.

Preferred

• Experience working with Santoni seamless suppliers or equivalent circular knitting manufacturers.
• Experience developing womens and/or mens seamless activewear products.
• Knowledge of sculpting compression body-mapping engineered ventilation and support zone technologies.
• Experience working with covered elastane air-covered yarns textured yarns recycled polyamide/polyester yarns and performance synthetic yarns.
• Experience managing yarn libraries stitch architecture libraries material platforms or innovation programmes.

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 FOUR 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. Were 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. Were committed to finding reasonable adjustments* for candidates with specific needs or 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 youd like to request a reasonable adjustment please email .

ABOUT US.

Were 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. Its what we want for our community and our team. A team thats growing rapidly around the world. A collective of talented individuals working together to invent Gymsharks future. Our plans are ambitious and were 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.

Required Experience:

IC

Employment Type : Full Time
Experience: years
Vacancy: 1