Assistant Merchandiser

Oner Active GmbH; City Of London; Hybrid; GBP 30,000 - 40,000; Full time

Job summary

A leading activewear brand in London is seeking an experienced Assistant Merchandiser to support planning, stock management, and sales analysis. The ideal candidate has over a year of experience in merchandising and is highly numerate with strong communication skills. This hybrid work role includes managing a team and requires flexibility to support overall business needs.

Benefits

25 days annual leave plus bank holidays

5% employer match pension scheme

Private healthcare

Monthly wellness allowance

Dog friendly office

Qualifications

• Minimum of 1 year as Assistant Merchandiser.
• Strong ability to work under pressure and handle multiple tasks.
• Familiarity with activewear is a plus.

Responsibilities

• Forecast sales and stock levels to maintain availability.
• Collaborate with cross-functional teams for product launches.
• Lead and support a team of Merchandising Admin Assistants.

Skills

Communication skills

Analytical skills

Team leadership

Problem-solving

Numerical proficiency

Tools

Microsoft Excel

WSSI systems

Job description

Role: Assistant Merchandiser

Reports into: Merchandiser

Contract Type: Full Time, working 7.5 hours per day, 5 days per week

Location: Hybrid, working 3 days a week in our offices based in Old Street, London

About Us

Nothing is clearer to us than the belief that every woman should include strength training in her life to enhance both physical and mental well-being. It's about building strong bodies and even stronger minds, asserting their right to take up space in the gym, and allowing the spotlight to shine bright on their progress.

To us, strength training represents a determined, goal-oriented mindset and an unwavering work ethic. We don't wait for success; we create it through hard work and determination. When faced with challenges, we don't back down; instead, we break through barriers, recognising that true progress lies on the other side.

These are the pillars that form the foundation of Oner Active. We consistently challenge ourselves to create innovative and impactful products, so that you can perform better. With our range of products and innovative approach, we provide a wide variety of colours to ensure that all skin tones genuinely radiate in Oner.

Our Purpose and Mission

We are on a mission to unite and empower women to be the strongest version of themselves through strength training. We want to inspire women to take centre stage in the gym by promoting strength training, which underpins all movement and sport, as a healthy foundation in life.

Our Benefits

• 25 days annual leave + bank holidays and work from anywhere up to 4 weeks a year
• 5% employer match salary sacrifice pension scheme
• Generous Oner Active discount plus regular office sample sales
• Free Evolve You subscription
• Private Healthcare with Vitality including optical and dental
• Monthly wellness allowance and team workout classes
• Start-up culture - the chance to learn and make a real impact
• Great employee events like our Summer party, Christmas party and team away days
• Healthy office snacks and fruit (plus a chocolate cupboard for a sweet treat for the balance)
• Dog friendly office

The Merchandising Team

At Oner Active, the Merchandising team plays a key role in turning data into strategy and strategy into success. We're passionate about product performance, customer insight, and driving decisions that lead to commercial growth. We collaborate across Buying, Product Development, Marketing, and Logistics to ensure the right products are in the right place, at the right time — and we’re proud to support a brand that’s going global

About you

As an Assistant Merchandiser at Oner Active, you will collaborate closely with the Merchandiser to drive the brand’s continued growth.In this role, you will be responsible for planning and managing stock levels, overseeing intake, and analysing sales performance to maximise results. You will also act as a key point of contact for various departments across the business, so strong cross-functional relationship-building skills and the ability to multitask effectively are crucial.

You’ll be responsible for:

• Forecasting sales and stock levels at franchise and style level to aid in achieving never out of stock positions.
• Collaborate closely with Buying, Design, Garment Tech, and Logistics teams to ensure timely product launches and effective online merchandising.
• Oversee intake alongside the Merchandising Admin Assistants, while working closely with the internal logistics teams to ensure on time deliveries.
• Complete weekly trade by analysing sales, stock, and data intake to identify trends and risks, while collaborating with cross-functional teams for insights. Present back a clear, data-driven report with actionable recommendations.
• Support the end-to-end critical path by attending weekly cross-functional meetings, helping resolve any intake and scheduling issues, and keeping internal systems updated with the latest timelines and changes.
• Foster strong, collaborative relationships across merchandising, buying, and all key business functions, teamwork is central to our success.
• Maintain a level of commercial awareness, considering customer behaviour, competitor activity, and wider market trends.
• Line manage and support the development of two Merchandising Admin Assistants, championing growth and performance.
• Create and maintain ad hoc and regular reports to support trading decisions.
• Under the guidance of the merchandiser contribute to developing the product strategy and build experience in planning the product range
• Confidently deputise for the Merchandiser in the case of any absence

You’ll need to have:

• Been at Assistant Merchandiser level already for at least 1 year
• Strong communication skills with the confidence to collaborate effectively across all levels of the business
• Proven ability to perform under pressure, with strong problem-solving capabilities
• Highly numerate with a keen eye for data, able to analyse and synthesise information from multiple sources
• Commercially minded with a clear understanding of trading performance and customer behaviour
• Demonstrated ability to lead, support, and motivate a team to meet both individual and collective targets
• Advanced in Microsoft Office, particularly Excel, with the ability to create and interpret reports with ease
• Understanding of WSSI systems with the ability to update as well as analyse and make suggestions from outputs
• As a growing start-up, flexibility and a hands-on approach are essential, you're someone who’s willing to step outside of your role to support the wider business when needed

Nice to have

• Experience in Activewear

Equality, Diversity, and Inclusion

At Oner Active it’s about embracing diversity and empowering every individual to reach their full potential. We are committed to creating an environment where everyone feels valued, supported, and able to thrive.

We welcome applications from all backgrounds and are dedicated to ensuring that everyone has equal access to opportunities during the recruitment process. If you require any reasonable adjustments or additional support, we encourage you to reach out to our Recruitment team — we’re here to support you every step of the way.