Seller Onboarding Assistant
Salary: Competitive Plus Benefits
Location: London Store Support Centre and Home, London, EC1M 6HA
Contract type:
Business area: Argos
Closing date: 13 July 2026
Requisition ID: 400059354
At Argos, we’re a digital-led UK retailer that keeps pushing boundaries to meet every generation with what they want, how and when they want it. As a market leader in general merchandise, serving millions of customers through our website, app, same-day delivery and Click & Collect services, we offer real opportunities to learn, grow and shape your career. With roles spanning Commercial, Buying, Merchandising, Design and Supply Chain, through to Digital, Operations, Customer Experience, Marketing, and People and Transformation, you will work with brilliant colleagues and directly shape how we serve our customers every day. From enabling inspiring choice across our owned brands, including Habitat, Chad Valley and Bush, alongside the world’s biggest brands like Apple, Lego, Xbox and Samsung, to making shopping effortlessly convenient, championing trusted value and accelerating our strategy - Argos is an exciting place to build your future.
At Argos, our Marketplace is a growing part of how we show up for customers, bringing together more choice, more sellers and more ways to shop. Behind that is a Marketplace team focused on getting sellers set up for success from day one.
The Seller Onboarding Assistant sits right at the centre of that journey, shaping how new sellers join, launch and start trading on the platform.
Working across Marketplace, technical and commercial teams, the role brings together data, systems and seller engagement. From managing integrations and supporting catalogue setup to tracking onboarding progress, the focus is on delivering a smooth, well managed experience that works for both sellers and customers.
It’s a fast-moving role with real variety, ideal for someone with experience in eCommerce or marketplace operations who understands the importance of data quality, seller management and getting the detail right.
What you’ll do
The role owns the end-to-end onboarding journey for new Marketplace sellers, ensuring everything is in place for a smooth and successful go live. This includes supporting sellers through account setup, from configuring their store and policies to ensuring VAT and operational details are aligned with business standards.
Working closely with technical teams, the role coordinates integrations such as APIs and feed uploads, as well as supporting order management testing. There is also a strong focus on product catalogue setup, ensuring listings meet data quality, taxonomy and content standards from the outset.
A big part of the role is keeping things moving. That means spotting onboarding challenges early, resolving issues where possible and escalating where needed. Alongside this, there is regular communication with internal teams to keep everyone aligned on seller readiness, timelines and any key risks.
The role also plays a part in improving how onboarding works day to day, identifying opportunities to make the process simpler, faster and more consistent. Throughout it all, building strong relationships with sellers is key, ensuring they feel supported and confident as they launch on the platform.
Who we’re looking for
This role would suit someone who has experience working in eCommerce or marketplace operations and understands what good looks like when it comes to onboarding sellers and managing product data.
A strong level of organisation is important, along with the ability to manage multiple onboarding journeys at once in a fast-paced environment. Confidence working with systems, integrations and data is key, as is a naturally detail focused approach.
Clear communication also plays a big role, working with a range of external sellers as well as internal stakeholders across technical and commercial teams. A proactive, solutions focused mindset will help in navigating challenges and keeping onboarding on track.
Essential criteria
- Experience in eCommerce, marketplace operations or working with sellers, suppliers or vendors
- Understanding of product catalogue structure, data quality and listing standards
- Confidence working with integrations, APIs or feed-based systems
- Strong organisational skills and ability to manage multiple priorities at pace
- Excellent communication and stakeholder management skills
- High attention to detail and confidence working with spreadsheets and data tools
We are committed to being a truly inclusive retailer so you’ll be welcomed whoever you are and wherever you work. Around here, there’s always the chance to try something new — whether that’s as part of an evolving team or somewhere else across the business - and we take development seriously and promise to support you. We also recognise and celebrate colleagues when they go the extra mile and, where possible, offer flexible working. When you join our team, we’ll also offer you an amazing range of benefits. Here are some of them: Starting off with colleague discount, you'll be able to save 10% on your shopping online and instore at Sainsbury's, Argos, TU and Habitat, and we regularly increase the discount to 15% at points during the year. We've also got you covered for your future with our pensions scheme and life cover. You'll also be able to share in our success as you may be eligible for a performance-related bonus of up to 5% of salary, depending on how we perform. Your wellbeing is important to us too. You'll receive an annual holiday allowance and you can buy up to an additional week's holiday. We also offer other benefits that will help your money go further such as season ticket loans, cycle to work scheme, health cash plans, salary advance (where you can access some of your pay before pay day) as well access to a great range of discounts from hundreds of other retailers. And if you ever need it there is also an employee assistance programme. Moments that matter are as important to us as they are to you which is why we give up to 26 weeks’ pay for maternity or adoption leave and up to 4 weeks’ pay for paternity leave. Please see www.sainsburys.jobs for a range of our benefits (note, length of service and eligibility criteria may apply).
