Account Manager (f/m/d)

Moss; Greater London; On-site; GBP 40,000 - 60,000; Full time

Benefits offered by this job

Equity

Office breakfasts & Friday demos

Learning & Development Budget

Work from abroad (20 days)

Job summary

Moss is the Finance AI platform for Europe’s mid-sized businesses, empowering finance teams to automate spend management and gain real-time visibility.

Join our Customer Success team in London to drive SaaS revenue through proactive engagement, upsell initiatives, and data-driven guidance that helps customers realise more value from our product.

You will collaborate with product and sales, measure KPIs, and contribute to long-term retention while growing with a fast-moving fintech unicorn.

Qualifications

• Proven experience in a proactive commercial-centric role in a B2B setting.
• Experience upselling products to existing clients.
• Fluent in English (C2).

Responsibilities

• Drive customer engagement and nurture scalable relationships to activate spend management features.
• Identify upsell opportunities and optimize product adoption to increase revenue.
• Measure success with KPIs and provide data insights on renewals and retention.
• Act as Product ambassador, communicating client feedback to inform feature development.
• Pursue process excellence to improve the client journey and long-term retention.

Skills

Customer focus

Upselling

B2B experience

English fluent

Data-driven

Relationship management

Negotiation

Communication

Analytical mindset

Prioritization

Job description

At Moss, we give finance professionals the power to automate their day-to-day and make forward-thinking decisions.

Our culture is what makes that possible: we play to win, we obsess over quality, and we win as One Moss, and it works. Moss closed a €35 million Series C in August 2026, crossing a €1 billion valuation, and became one of Europe's fintech unicorns. Join us for what's next.

Join our Customer Success team, where you will focus on driving SaaS revenue growth through proactive customer engagement. While leveraging data insights, you will proactively identify upsell opportunities and mitigate churn risks for your portfolio of customers. Your strategic guidance and deep product knowledge will be essential in helping customers unlock new value of our product and set them up for success.

Your responsibilities

Here's a bit more on what you can expect to be doing day-to-day:

• Drive customer engagement - through building and nurturing value-creating and scalable relationships, you develop a deep understanding of your clients’ and their finance goals. You guide and consult with them in order to drive their engagement and the activation of all the spend management features.

• Upsell -you leverage your deep understanding of both the product and your customer's needs to identify new business opportunities, as well as product and feature optimisation initiatives to increase value for existing accounts.

• Measure success and provide data insights - with the use of specific KPIs you aim to achieve and monitor revenue trajectory through, for example, key metrics such as spend engagement, SaaS uplift and renewals.

• Act as Product ambassador - working closely with internal stakeholders, you compile and communicate client feedback and act in an advisory capacity on current and future product features.

• Thrive for process excellence - you aim for continuous improvement, designing and delivering upon the client journey touchpoints that will increase customer satisfaction and contribute towards long‑term retention.

About you

We think you’ll need the following experience and qualifications to succeed in the role:

• Proven experience in a proactive commercial‑centric role, ideally in a B2B setting.

• Prior experience with upselling products and product features to existing clients.

• Fluent in English (C2).

In addition, here are the skills and attributes we are looking for:

• Customer obsessed - You empathize with the needs and pain points of the customer and provide a flawless experience.

• Commercially minded - You are able to demonstrate continuous value to customers, leveraging new business opportunities and can confidently negotiate pricing, contracts and add‑ons.

• Clear communicator - You are able to communicate complex topics to a range of audiences in a clear, concise and expert manner.

• Analytical mindset - You are able to read, interpret and leverage data to prioritize customers, solve complex problems, identify upsell opportunities and retain customer happiness. You can recognise problems before they arise, and you challenge the status quo.

• Expert Operator -You are able to manage multiple requests at the same time and prioritize accordingly. You have a structured way of working, employing efficiency and effectiveness in your day-to-day tasks.

About Moss

Moss is the Finance AI platform for Europe's mid‑sized businesses, giving companies real‑time visibility and full control over their spend. By automating card issuing, invoice management and expenses, Moss simplifies financial workflows and frees finance and accounting teams from manual, administrative work.

Founded in Berlin and used by more than 10,000 businesses including Flink, Schufa, n8n and Auto1, Moss has raised €220+ million to date and operates in Germany, the Netherlands, the UK and further EU markets. In August 2026, Moss closed a €35 million Series C led by Portage, crossing a €1 billion valuation and becoming one of Europe's newest fintech unicorns. Moss is backed by investors including Valar Ventures, Tiger Global, Global Founders Capital, Cherry Ventures, A-Star.

What else to expect

• Top‑of‑market compensation package, including equity.

• Our vibrant offices are at the heart of our culture, where in‑person time fuels collaboration and connection over weekly breakfasts and Friday demos.

• Additional benefits include: 20 days 'work from abroad', 600EUR/GBP Learning & Development Budget, and other local benefits.

Unless stated otherwise, benefits apply to full‑time positions (interns and working students receive a tailored package).