The Underwriting department supports the Bank by assessing the risk of lending and protecting the Bank against this risk and losses. With strong market knowledge, diagnostic approach and ability to give dependable decisions, the team take a common sense approach to manual underwriting.

As Senior Underwriter you will be working within the Bridging team and will progress mortgage applications, within the assigned mandate level, through to mortgage offer and completion in line with the Bank’s operating policies and procedures. 

The role requires a combination of technical knowledge, strong communication skills, attention to detail, and the ability to collaborate with various teams. 

Key responsibilities will include:

• Reviewing and Issuing Terms: Quickly assessing and issuing terms for agreement in principle requests from intermediaries.
• Underwriting Applications: Reviewing mortgage applications, taking a risk-based approach to ensure they align with company policy and criteria, offering loans within the assigned mandate level.
• Handling Out-of-Policy Cases: For applications outside normal policies or your approved mandate, providing recommendations for escalation.
• Communication: Regular interaction with intermediaries and solicitors, both over the phone and in writing.
• Collaboration: Understanding time-sensitive customer needs and collaborating with sales teams to meet them.
• Policy and Process Implementation: Assisting management in making sure internal policies and processes are properly followed.
• Coaching Team Members: Offering guidance and training to newer or less experienced colleagues.
• Managing Escalations: Dealing with difficult queries or complex situations and helping resolve them, while also training team members.
• Identifying and Escalating Potential Fraudulent Activity: recognising red flags and inconsistencies that might indicate fraudulent behaviour, adhering to company processes for escalating concerns and reporting.

We offer a base salary for a Senior Underwriter dependent on experience of between £41,000 - £44,000 and a competitive benefits package including:

• Enhanced family-focused benefits
• Hybrid-working
• Annual bonus opportunity

Please use this link to see the fantastic benefits available at OSB: OSB Careers

At OSB Group, we understand how much our people bring to our organisation, which is why we try our best to give back too! Our Purpose is to help our customers, colleagues and communities prosper and we are on a transformation journey to become ‘the bank of the future’.

Our commitment to professional development, flexible working, and employee well-being fosters a dynamic and supportive workplace.

We are looking for talented individuals who have the experience and qualifications set out below:

• Three years of mandated mortgage underwriting experience within a UK financial operation (including portfolio lending and/or specialist buy to let and/or credit repair/subprime and/or bridging and/or bespoke priced residential loans).
• Strong knowledge of the Data Protection Act, Anti-Money Laundering, MCOBS and MMR.
• Detailed knowledge of the FCA/PRA regulations regarding residential mortgages.

Applications are welcome from both Senior Underwriters and experienced Underwriters, with scope to tailor the role for the right candidate.

If this sounds like you, please apply now! For internal applications please visit the internal careers page to apply by Tuesday 3^rd February 2026.

Still on the fence? Hear from our team or explore our process: OSB Careers

Shortlisted candidates will go through a personalised recruitment process, that is relevant and conversational – inclusive any individual reasonable support required. We want to bring out the best in you!

Diversity, Equity & Inclusion

Not sure if you meet the spec? Let us decide.

Research tells us that those from marginalised groups feel like they need to meet 100% of the criteria to apply. Here at OSB, we are committed to inclusivity and understand the value different experiences and perspectives can bring, so please don’t feel like you need to check every box to apply for a role internally.

We champion diversity at all levels, with Board-level Diversity Champions tracking our progress. We are proud to be signed up to the Women in Finance Charter to actively support the growth and development of senior women in our sector and are dedicated to treating all our employees and job applicants equally, opposed to discrimination on any grounds.