Ecommerce Client Manager in London

Ecommerce Client Manager in London

London Full-Time 40000 - 50000 £ / year (est.) No working from home possible
Limelight Health

At a Glance

  • Tasks: Manage supplier-funded media activations and optimise performance on Groceries Online.
  • Company: Join Sainsbury's Nectar360 team, a dynamic hub for retail media and loyalty.
  • Benefits: Enjoy discounts, flexible working, and a range of wellbeing perks.
  • Other info: Great opportunities for growth and development in a supportive environment.
  • Why this job: Be part of a fast-paced team making a real impact in ecommerce.
  • Qualifications: Experience in client management and data analytics is essential.

The predicted salary is between 40000 - 50000 £ per year.

hackajob is collaborating with Sainsbury's DTD to connect them with exceptional professionals for this role. We’d all like amazing work to do, and real work-life balance. That’s waiting for you at Sainsbury’s. Everything our Nectar team does is powered by data and by strong relationships with some of the UK’s favourite brands. The Nectar360 team develops loyalty programmes, turning insight into something that makes a real difference, across both traditional and digital media. It’s like an agency within a retailer, and retail media is a crucial part of our future. The culture might not be what you expect either, because there’s no setup quite like this one. The team is a real priority, connected to almost everything the business does and playing a key role in driving profitability. It’s a place where you can take risks, learn from them, and be recognised.

About The Team

Nectar360 sits at the heart of Sainsbury’s retail media and loyalty ecosystem, focused on creating a brilliant digital experience for customers shopping online. We’re a fast‑growing, dynamic team powering supplier‑funded campaigns across Sainsbury’s.co.uk, the Sainsbury’s App and OnDemand channels—helping brands connect with customers at the moments that matter. Working as part of our Digital Media function, you’ll collaborate with talented colleagues across trading, digital trading and ad operations to deliver best‑in‑class execution and measurable impact.

More About The Role

As an Ecommerce Client Manager, you’ll be accountable for the end‑to‑end management and delivery of supplier‑funded media activations across your business unit on Groceries Online (GOL). You’ll work within defined trading and planning guardrails to drive supplier investment, optimise spend, and track performance against commitments—ensuring activity aligns to supplier activation plans and delivers excellent execution. Day to day, you’ll partner closely with category suppliers and internal stakeholders to review performance, investment and strategy, while working with ad operations teams to ensure campaigns are activated and optimised effectively on our ecommerce media platform. You’ll also play a key role in educating and upskilling colleagues on GOL media, contributing to the ongoing development of a profitable, customer‑focused media proposition that protects the customer journey. You’ll provide regular updates to the Ecommerce Client Director and Senior Ecommerce Client Manager on client performance, project delivery and revenue status, supporting shared priorities and smooth delivery.

More About You

You’re highly organised and methodical, comfortable managing multiple workstreams in a fast‑paced and sometimes ambiguous environment, while maintaining strong attention to detail—especially when working with data and analytics tools. You bring a solid foundation in client management (ideally within retail or FMCG), combining analytical and numerical capability with clear communication and presentation skills that build trust with internal and external stakeholders. Commercially minded and strategically aware, you can align plans to broader business objectives, negotiate effectively to balance competing priorities, and deliver to deadlines. You take ownership, proactively spot risks and opportunities, and collaborate across teams—often through matrix ways of working—to drive outcomes against client objectives and revenue targets. You’re also committed to continuous development and happy to stretch beyond your comfort zone as you grow within the role.

Essential criteria (up to 5)

  • Demonstrable experience managing end‑to‑end delivery of supplier‑funded ecommerce media activations (briefing, activation, optimisation and post‑campaign review).
  • Proven ability to track spend and performance against agreed commitments using data and analytics tools, and turn insights into clear recommendations.
  • Evidence of building productive relationships with suppliers and internal stakeholders (e.g., trading/digital trading) to align plans and prioritise activity.
  • Experience working with ad operations teams to ensure campaigns are activated accurately and optimised effectively on an ecommerce media platform.
  • Ability to manage multiple concurrent workstreams to deadline within defined guardrails, providing clear status updates on performance, delivery and revenue.

Benefits

We are committed to being a truly inclusive retailer, so you’ll be welcomed whatever 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.

Starting off with colleague discount, you'll be able to get 10% off at Sainsbury's, Argos, TU and Habitat after 4 weeks. This increases to 15% off at Sainsbury’s every Friday and Saturday and 15% off at Argos every pay day. 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 target bonus of up to 10% of salary (which may vary for Nectar360), depending on how we perform.

Your wellbeing is important to us too. You'll receive an annual holiday allowance and you can buy additional 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, pay advance (where you can access some of your pay before pay day) as well as 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.

Ecommerce Client Manager in London employer: Limelight Health

Sainsbury's offers an exceptional work environment for the Ecommerce Client Manager role, where a commitment to work-life balance and employee development is at the forefront. With a dynamic culture that encourages innovation and collaboration, employees are empowered to take risks and learn from their experiences while enjoying a comprehensive benefits package, including generous discounts, performance-related bonuses, and flexible working options. Located in London, this role provides a unique opportunity to be part of a fast-growing team that plays a crucial role in shaping the future of retail media and loyalty programmes.

Limelight Health

Contact Details:

Limelight Health Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Ecommerce Client Manager in London

Tip Number 1

Network like a pro! Reach out to current or former employees at Sainsbury's through LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.

Tip Number 2

Prepare for the interview by knowing your stuff! Research Sainsbury's recent campaigns and their approach to ecommerce. This shows you're genuinely interested and ready to contribute to their goals.

Tip Number 3

Practice makes perfect! Get a mate to do a mock interview with you. Focus on articulating your experience in managing supplier-funded media activations and how you've used data to drive results.

Tip Number 4

Don’t forget to follow up! After your interview, send a thank-you email to express your appreciation for the opportunity. It’s a nice touch that keeps you on their radar and shows your enthusiasm.

We think you need these skills to ace Ecommerce Client Manager in London

Client Management
Data Analysis
Ecommerce Media Activation
Performance Tracking
Relationship Building
Communication Skills
Project Management

Some tips for your application 🫡

Tailor Your Application:Make sure to customise your CV and cover letter for the Ecommerce Client Manager role. Highlight your experience with supplier-funded media activations and how you've built relationships in the retail space. We want to see how you can bring value to our Nectar360 team!

Showcase Your Data Skills:Since this role involves a lot of data and analytics, don’t shy away from showcasing your skills in this area. Provide examples of how you've tracked performance and turned insights into actionable recommendations. We love seeing candidates who can make data work for them!

Communicate Clearly:Your ability to communicate effectively is key in this role. Use clear and concise language in your application to demonstrate your communication skills. Remember, we’re looking for someone who can build trust with both internal and external stakeholders.

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets the attention it deserves. Plus, you’ll find all the details about the role and our amazing benefits there!

How to prepare for a job interview at Limelight Health

Know Your Numbers

As an Ecommerce Client Manager, you'll be working with data and analytics tools. Brush up on your numerical skills and be ready to discuss how you've tracked spend and performance in previous roles. Bring specific examples of how you turned insights into actionable recommendations.

Build Relationships

This role requires strong relationships with suppliers and internal stakeholders. Think about how you've successfully collaborated in the past. Prepare to share stories that highlight your ability to align plans and prioritise activities effectively.

Master the Art of Communication

Clear communication is key in this position. Practice explaining complex ideas simply and concisely. Be ready to demonstrate your presentation skills, as you'll need to build trust with various stakeholders. Consider preparing a mini-presentation on a relevant topic to showcase your abilities.

Stay Organised and Methodical

With multiple workstreams to manage, organisation is crucial. Share your strategies for staying on top of tasks and deadlines. You might want to bring a planner or digital tool example that you use to keep everything in check, showing your methodical approach to work.