Assistant Project Manager jobs in United Kingdom

Are you obsessed with data, partner success, taking action, and changing the game? If you have a whole lot of hustle and a touch of nerd, come work with Pattern!

Pattern accelerates brands on global e-commerce marketplaces leveraging proprietary technology and AI. Utilizing more than 46 trillion data points, sophisticated machine learning and AI models, Pattern optimizes and automates all levers of ecommerce growth for global brands, including advertising, content management, logistics and fulfilment, pricing, forecasting and customer service. Hundreds of global brands depend on Pattern’s ecommerce acceleration platform every day to drive profitable revenue growth across 60+ global marketplaces—including Amazon, Walmart.com, Target.com, eBay, Tmall, TikTok Shop, JD, and Mercado Libre. To learn more, visit pattern.com.

Pattern has been named one of the fastest growing tech companies headquartered in North America by Deloitte and one of best-led companies by Inc. We place employee experience at the center of our business model and have been recognized as one of Newsweek’s Global Most Loved Workplaces®.

The role of the Senior Merchandise Planner is to drive efficient and sustainable Marketplace growth through effective demand planning and inventory management for our European brands. This position is pivotal in defining buying strategies and tactical plans to generate growth, ensuring that sales forecasts and buy plans are directly linked to sell‑out performance. The Senior Merchandise Planner will manage their own brand portfolio and contribute to overall product category performance, standardizing forecasting and other processes across the category. This role is accountable for a portfolio of brand's performance, including revenue and stock health, working alongside a wide range of stakeholders within the business.

• Owns the end-to-end inventory performance and forecasting accuracy for a complex brand portfolio. Manages and is aware of overall product category performance, contributing to forecast and process standardisation across the category.
• Defines buying strategies and tactical plans to generate growth within Pattern and its partners, supporting multiple stakeholders.
• Regularly maintains and reviews line‑level forecasts for their brand portfolio to reflect current sales trends, ensuring high ordering accuracy and smooth workflow.
• Reviews the logic of forecasting tools and algorithms, providing feedback and proposing solutions for ongoing improvements.
• Drives longer‑term strategic discussions on accelerating brand growth or mitigating risks in collaboration with Ecommerce Management and Ads counterparts.
• Identifies broader category, country, and marketplace trends and takes pro‑active actions to capitalize on opportunities or mitigate risks.
• Delivers complex medium to large‑scale cross‑functional projects from initiation through delivery.
• Proactively searches for and develops solutions for process, data, and tech challenges.
• Consistently challenges and optimizes processes to reduce lead times and improve stock turn/sell‑through.
• Strategically manages ordering and intake for their brands, including building stock, arranging deliveries, and negotiating terms on purchase orders.
• Presents to external clients, leading discussions around Buying Strategy and Sell‑In/Sell‑Out forecasts.
• Provides analytical and actionable insights into forecast deviations and future implications.
• Works closely with brands to ensure order fulfillment and supply chain efficiencies.

• Bachelor’s degree.
• 6+ years working in a multiple category/brand merchandising or planning role.
• Proven experience in Demand and Supply Chain Planning.
• In‑depth understanding of merchandising and trading approaches (ideally within branded apparel).
• Previous experience working with an eCommerce channel (e.g., D2C or Marketplace).
• Highly commercial mindset, considering both the customer and business needs.
• Advanced Microsoft Excel skills, with strong Microsoft Office and PowerPoint skills.
• Strong communication and interpersonal skills.
• Experience working in a client‑facing role.
• Past experience working in a fast‑paced business environment - proven track record of senior stakeholder management and delivering on project deadlines.

• An initial phone interview with Pattern’s talent acquisition team
• A focus interview with the hiring manager (30 mins)
• A technical interview with the hiring team (1 hour)
• Additional focus interview (30 mins)Top Grading with HR & Reference Collection
• Offer

• 28 days Holiday
• Competitive salary
• RSU’s (Restricted Stock Units)
• Hybrid working (2 days a week in the office)
• Health Shield Cover (Health, Dental, Eye care and Physio cash reimbursement plan)
• Free breakfast and snacks in the office
• Pension Scheme
• Enhanced Maternity and Paternity leave and pay
• Regular company socials

Pattern is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.