Jobs Companies Mast Customer Success Specialist

About this Customer Success Specialist role at Mast

Mast · London, England, United Kingdom; UK (Remote)

Mast is on a mission to make complex lending simple. The UK's specialist lending market is underserved by technology, with legacy systems that can't handle the nuance of complex income, niche products, or the broker workflows that specialist lenders rely on.

We're building modern, cloud-native lending technology, purpose-built for specialist lenders, that helps them process more applications in less time, reach decisions faster, and deliver better experiences for brokers and borrowers.

We're pioneering the use of AI in mortgage origination, building it into the platform from the ground up rather than bolting it onto legacy architecture.. We work with regulated lenders across the UK, have a 100% delivery track record, and are building a high-performance team where everyone has real ownership and direct impact.

About the role

This is not a traditional support role. You don't need previous customer support experience to apply.

This role is ideal for a recent graduate or someone early in their career who wants to get into tech, learn quickly, and build a broad understanding of how a software company operates.

You'll help lenders, brokers, and internal teams get the best out of Mast. You'll answer questions, investigate issues, improve support processes, create documentation, spot recurring product friction, and turn customer conversations into ideas that shape the platform.

You'll report to the Head of Product and work closely with Product, Engineering, Client Success, and Implementation. Over time, this role has the potential to grow into leading Mast's customer support function as the company scales.

What you'll do

Support customers and users

Triage, investigate, and manage support requests from start to finish, escalating to Product or Engineering where needed while keeping people informed. You'll build deep knowledge of Mast's platform, including mortgage journeys, forms, policy prompts, automations, integrations, product configuration, and broker/lender workflows.

Build the support operating system

Design how support works at Mast: ticketing workflows, escalation routes, response templates, internal runbooks, help centre content, and reporting dashboards. Find repetitive questions and manual processes, then automate them through better tooling, documentation, AI-assisted workflows, or process changes.

Turn support into product insight

Because this role reports into Product, you'll do more than answer questions. You'll identify patterns in customer feedback, recurring pain points, confusing workflows, and missing features, then translate those into product ideas, bug reports, and roadmap input.

Create self-service documentation

Write clear, practical help articles, FAQs, release notes, troubleshooting guides, onboarding material, and internal playbooks. Keep everything up to date as the platform evolves.

Use AI to work smarter

Use AI tools to draft documentation, summarise issues, identify patterns, write clearer responses, and speed up repetitive work. You don't need to know everything already, but you should be curious, experimental, and willing to learn.

What we're looking for

  • Early in your career, a recent graduate, or looking for your first role in tech
  • Can work independently, spot what needs doing, and make progress without detailed instructions
  • Excellent written communication; can explain things clearly and calmly
  • Organised and detail-oriented, especially when managing multiple issues or follow-ups
  • Comfortable using AI tools and keen to keep learning as the technology evolves
  • Naturally inclined to ask, "How can this be easier next time?"
  • Comfortable working remotely and taking ownership of your time
  • Interested in software, fintech, lending, or complex workflows

What you don't need

  • Previous experience in customer support
  • Previous experience in mortgages or financial services
  • Technical skills or the ability to code

You do need to be smart, curious, organised, and excited to learn fast.

Nice to have

  • Familiarity with tools like Notion, Slack, Linear, Jira, Zendesk, Intercom, HubSpot, Loom, Metabase, or AI tools like ChatGPT and Claude
  • Experience from university projects, internships, part-time work, customer-facing roles, or startup environments
  • Interest in product management, customer success, operations, automation, or fintech
  • Experience writing clear documentation, guides, or process notes

What success looks like

First 3 months: Strong understanding of Mast's platform and customer workflows. Ownership of incoming support requests. Clearer processes for tracking and resolving issues.

6 to 12 months: Reduced repeat questions through better documentation and automation. A reliable feedback loop into Product. Clear visibility into where customers struggle and where the product can improve.

Longer term: You help define what excellent customer support looks like at Mast, and may grow into leading the support function.

Salary & Location

Location: London or UK Remote

Salary: £30,000 to £35,000 + Stock Options

Target Start date : 15th of June 2026

Benefits
  • Stock Option Plan
  • 25 days holiday + bank holidays
  • 4 - 10 weeks work from anywhere, based on tenure (for UK based roles)
  • Vitality Health insurance
  • Pension plan
  • Equipment budget
  • Learning & development budget
  • Cycle to Work Scheme
  • Monthly team socials + Quarterly Team Meet-ups @ HQ
  • Digital-first, employee-first company with a flexible working culture + Central London HQ
Mast. is an equal opportunity employer and we celebrate diversity and are committed to creating an inclusive environment for all employees.
 
ABOUT US

Mast is a high-performance team of engineers and lending experts building the future of specialist lending technology. We value radical honesty, transparency, and speed. We hire exceptional people, expect a lot from each other, and offer real ownership, fast growth, and the chance to shape an industry.

Ready to apply to Mast?
Apply to Mast

How this Customer Success salary compares

This role pays $43,576/yrbelow the typical range for Customer Success roles.

$69,749 median $117,000 $180,450

Typical range $90,000–$150,000/yr, from 754 comparable Customer Success listings on JobsRadar (pay annualized to USD). See Customer Success salary insights →

About Mast

 

Mast’s mission is to create a world where borrowing is effortless and lending is seamless.

 

Today, a small group of legacy technology suppliers dominate the market with outdated systems that are slow to evolve and painful to customise. Lenders are frustrated, and the industry is ready for change.

 

Mast is building modern, cloud-native mortgage technology that helps lenders process more applications in less time. We enable lenders to reach mortgage decisions faster, more efficiently, and with better experiences for their customers.

 

Our products are designed for self-service, giving lenders full control over their workflows and the flexibility to deliver outstanding service. We believe the only way to truly transform an industry is to solve its hardest problems at the root.

 

We’re a venture-backed team of engineers and finance experts with a deep culture of technical excellence. At Mast, we put people first. We value radical honesty, transparency, and innovation, and we work hard to build an environment that’s fast-paced, collaborative, and genuinely fun.

 

We hire exceptional people for every role. While we expect a lot from each other, we offer the opportunity to grow fast, work with world-class colleagues, and shape the future of lending.

 

Our Values

 

We are a principles-first company
No matter the circumstances, our principles are our north star. They guide us to become the best we can be and help us make decisions today to get us one step closer to our mission.

People

Customers or employees, and people always come first. People build technology to serve people. We are at the service of people, always.

Integrity

Always do what is right and what is best for everyone.

Candid Feedback

Giving and receiving feedback well is one of the most important traits of learning. At Mast, anyone can voice their opinion, criticise ideas and call us out when we don't do things well, with the aim of assisting.

Self-awareness
 
We are all humans, we are all flawed and none of us knows everything – and that should never be a limiting factor. It's okay to make mistakes, as long as you are happy to ask for help and want to learn. We succeed as a team.

Reliability

We invest heavily in infrastructure, design and great service. Trust and reputation is a pillar of our identity.

Honesty and transparency
 
We provide a safe and open environment. We rely on truthful and transparent communication to ensure that the best ideas win.

Pursuit of excellence
 
Everything we do, we do well or we don’t do at all. Even the things that we don’t see at the surface. Excellence is in the process and in the details. The rest will take care of itself.

See all jobs at Mast →

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