Information Security Manager

Information Security Manager

Salary: £70,000 to £80,000

Location: Remote

Security Clearance: Eligible for SC/DV clearance

Who are we:

In 2019, our founders were working as engineers solving complex cross-domain problems within government organisations. 

TwinStream (TSL) was formed to consolidate its collective expertise and experience into one business, providing technical excellence and exceptional service to its clients. We have teams working both on-site with clients and remotely from home. 

About the role:

We’re looking for a hands-on, mid-to-senior Information Security practitioner who enjoys getting involved in the practical aspects of security. This role is about delivery—updating and writing policies, delivering training, and providing clear, pragmatic security advice across TwinStream.

You’ll work independently, owning day-to-day information security activities without line management responsibilities. While we may occasionally bring in specialist support, you’ll be trusted to drive the work forward.

This role focuses on governance, risk, and compliance rather than IT operations. You won’t be configuring systems or running security tools—our IT teams handle that—allowing you to focus on enabling secure delivery and building a positive security culture.

Key Responsibilities:

• Manage information security incidents and security risks across the organisation

• Own and maintain the Information Security Management System (ISMS), including creating and updating policies, procedures, and guidance

• Ensure adherence to information security policies and standards

• Drive a programme of continuous information security improvement

• Embed and promote a positive security culture across the business

• Ensure compliance with relevant certifications and regulatory requirements, including ISO 27001, Cyber Essentials Plus, UK GDPR/Data Protection Act, and MOD CSM v3 and v4

• Plan and coordinate security audits (internal, external, customer, and penetration testing), managing evidence collection and tracking findings through to resolution

• Provide information security expertise to projects, services, and business initiatives, including developing or contributing to Security Management Plans

• Design and deliver information security training and awareness activities

• Contribute to Business Continuity, Disaster Recovery, and internal audit activities

• Act as the primary point of contact for information security across TwinStream

Key Skills:

• Proven experience in an Information Security Manager or similar role, including security incident management, risk management, security governance, and providing practical information security guidance

• Experience embedding information security into the design, development, and delivery of software-based solutions, including secure development practices, cloud services, and integrated platforms

• Strong understanding of recognised information security frameworks and certifications, particularly ISO 27001 and Cyber Essentials Plus

• Good knowledge of relevant UK legislation and regulatory requirements

• Comfortable working remotely (within the UK) in a flexible, fast-paced environment

• Strong organisational skills with the ability to manage priorities effectively

• Excellent written and verbal communication skills, with the ability to tailor messaging for different audiences

• Relevant professional certifications such as CISSP (highly desirable), CISM, or ISO 27001 Lead Implementer/Auditor

• Ability and willingness to undergo UK Security Clearance (minimum SC level)

Desired Skills:

• Experience in information security roles within the UK defence sector, national security sector, or other highly regulated industries

• Existing UK Security Clearance (SC)

• Familiarity with MOD security frameworks, including CSM v3 and v4, IPSA, and FSC

• Experience using the Atlassian suite, particularly Jira

• Demonstrated experience in managing security incidents and leading incident response teams. 

• Ability to present and be the focal point for security matters across the business. 

• Experience in supporting the security controller role in various security frameworks. 

• Understanding of insider threat operational and governance requirements, and experience in applying them. 

There are many great reasons to join our team!

Pension Plan

Secure your future with our competitive pension plan that offers an 8% employer contribution.  

Private Medical Healthcare

Your health and well-being are our top priorities. Enjoy comprehensive private medical healthcare, which includes dental and optical care for you and your family.  

Learning and Development

Your career is in your hands. We empower you to take charge of your own development, giving you the autonomy to shape your growth. 

Flexible Working

We understand the importance of balancing work and life. Flexibility is not just a policy for us; it is part of our culture. We are passionate about helping you seamlessly integrate work with your home life.   

Electric Vehicle Scheme 

Drive sustainability forward with our electric vehicle leasing scheme. You can take advantage of this initiative through a convenient salary sacrifice program.   

Holidays 

Enjoy annual leave of 28 days, plus bank holidays, allowing you to recharge and spend time on what matters most.     

Team Events

We love celebrating our achievements! In addition to our quarterly meetings, you can look forward to our Christmas and summer parties—opportunities to relax, reflect, and have fun as a team.   

Additional Benefits 

We provide life assurance for your peace of mind and a cycle-to-work scheme to support your health and sustainability goals.