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Location
Hybrid (Newcastle upon Tyne, United Kingdom)
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 13, 2026. First seen by Alion on Oct 7, 2026.

Overview
Company
Impact
Profile match
Sumer is a British group of accountancy firms that provides accounting, audit, tax, payroll and business advisory services to small and medium-sized businesses across the United Kingdom. Formed in 2022, it has brought together regional practices with offices in cities such as London, Belfast, Stoke-on-Trent, Bolton, Ipswich, Worthing, Leeds and Sheffield, and it hires accounts semi seniors, early careers trainees and compliance staff. The company is headquartered in Barrow-in-Furness, England, United Kingdom.
Backed by Penta Capital

In 2023, RMT became part of Sumer Group - a collaboration of renowned regional accountancy practices with a shared vision to champion local small to medium-sized enterprises.

By bringing together the best in advisory & business services, Sumer Group retains the value that community-based practices offer and combines this with the scale, breadth of expertise and technologies that only a national organisation can muster. Through our unique approach, we believe we can make a real positive impact and achieve growth for our company, our colleagues and our clients. Together, we are about doing the right things, putting people first and delivering the best possible services to those who sit at the heart of our economy and communities.

We are seeking an experienced Lead Penetration Tester to join our growing Cyber Security practice. With a minimum of five years' experience delivering penetration testing and technical security assessments, you will play a key role in leading client engagements, developing our service offerings and mentoring junior consultants.

Working closely with the wider RMT Technology IT and Cyber team, you will deliver and oversee a broad range of services including penetration testing, Cyber Essentials Plus assessments, technical information security reviews and security assessments aligned to recognised frameworks such as NIST, ISO 27001 and PCI-DSS.

As a senior member of the team, you will provide technical leadership, assure the quality of assessment outputs, contribute to service development and support client-facing activities. You will maintain awareness of emerging threats, vulnerabilities and best practice to ensure our clients receive practical, risk-based security advice.

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