Coalfire7h ago

New

GBP 65000–134000/yr

Senior Consultant, Mobile Application Security

United KingdomRemotesenior

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Overview

About Coalfire Coalfire is on a mission to make the world a safer place by solving our clients’ hardest cybersecurity challenges. We work at the cutting edge of technology to advise, assess, automate,

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About Coalfire

Coalfire is on a mission to make the world a safer place by solving our clients’ hardest cybersecurity challenges. We work at the cutting edge of technology to advise, assess, automate, and ultimately help companies navigate the ever-changing cybersecurity landscape. We are headquartered in Chicago, Illinois with offices across the U.S. and U.K., and we support clients around the world.

But that’s not who we are – that’s just what we do.

We are thought leaders, consultants, and cybersecurity experts, but above all else, we are a team of passionate problem-solvers who are hungry to learn, grow, and make a difference.

The Senior Consultant works closely with Project Managers, Delivery Directors, and other Delivery team members to lead engagements, assessing the security of various types of client applications and supporting infrastructure against security best practices. The Senior Consultant is a technical leader with broad technical skills, meeting the objectives of their engagements, collaborating with clients, mentoring teammates, and providing subject matter expertise across one or more technical domains. The Senior Consultant is a trusted advisor to clients, and through objective testing and results reporting, supports the client in making well-informed, risk-based decisions to improve overall security posture.

Working independently and collaboratively with a team to both lead and support

Perform penetration testing on applications with complex technology stacks from both a:

Blackbox perspective
Whitebox perspective
Dynamically flex your skills when assessing emerging or custom technologies.
Contextualize vulnerabilities and assess realistic impact to a client accounting for mitigating and aggravating factors.
Manage priorities and tasks to achieve utilization targets.
Operate with professionalism both internally and with clients.
Ensure quality reports and services are delivered efficiently and on time.
Maintains strong depth of knowledge in the practice area.
Collaborate with project managers, quality management, sales and other delivery team members to drive customer satisfaction and meet project deliverables.

Application penetration testing and assessment tradecraft and methodologies (including browser-based, API, mobile)

Working knowledge of at least two programming or scripting languages

Strong understanding of security principles and industry best practices.

Minimum of 4 years’ experience in a consulting/professional services role

Minimum of 4 years’ experience in Application Security and/or Software Development

Strong consulting skills including:

Time management, performing adjacent tasks while ensuring on-time delivery, escalating issues as needed

Verbal communication, leading client calls for project kickoffs and debrief

Written communication

Report writing, for both executive audiences and technical staff

Required proficiency in:

Web Application Penetration Testing

Mobile Application Penetration Testing

Strong overall technical skills, with additionnal strong expertise in at least one of the following preffered:

Thick Application Penetration Testing

Hardware Penetration Testing

Secure Code Review

Container Penetration Testing

Cloud Penetration Testing

Network Active Directory Penetration Testing

AI Penetration Testing

UK CREST Certification and eligibility to be approved for and maintain UK SC level Clearance

Srongly preferred CREST Certifications

CREST Practitioner Security Analyst (CPSA)

CREST Practitioner Threat Intelligence Analyst (CPTIA)

AWAE, OSCP, OSCE, OSEE offensive security certifications

Significant development and engineering backgrounds

Cloud Service penetration testing tradecraft and methodologies across multiple service providers (e.g. AWS, GCP, etc.).

Mobile platform and application penetration testing tradecraft and methodologies across both iOS and Android.

Red/Purple Team tradecraft and methodologies.

Social engineering in all its forms.

AWS Certified Solutions Architect – Professional, AWS Certified Security, AWS Certified Advanced Networking, AWS Certified SysOps Administrator

Network, Database, System administration experience and certifications

Why You’ll Want to Join Us

At Coalfire, you’ll find the support you need to thrive personally and professionally. In many cases, we provide a flexible work model that empowers you to choose when and where you’ll work most effectively – whether you’re at home or an office.

Regardless of location, you’ll experience a company that prioritizes connection and wellbeing and be part of a team where people care about each other and our communities. You’ll have opportunities to join employee resource groups, participate in in-person and virtual events, and more. And you’ll enjoy competitive perks and benefits to support you and your family, like paid parental leave, flexible time off, certification and training reimbursement, digital mental health and wellbeing support membership, and comprehensive insurance options.

At Coalfire, equal opportunity and pay equity is integral to the way we do business. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Coalfire is committed to providing access, equal opportunity, and reasonable accommodation for individuals with disabilities in employment, its services, programs, and activities. To request reasonable accommodation to participate in the job application or interview process, our Human Resources team at HumanResourcesMB@coalfire.com.

Location & Eligibility

Where is the job

United Kingdom

Remote within one country

Who can apply

Listing Details

Posted: June 23, 2026
First seen: June 23, 2026
Last seen: June 23, 2026

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Days active: 0
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Trust Level: 87%
Scored at: June 23, 2026

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Coalfire

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Coalfire is a cybersecurity advisor that helps private and public-sector organizations avert threats, close gaps, and effectively manage risk. They provide independent, tailored advice, assessments, technical testing, and cyber engineering services to help clients develop scalable programs that improve their security posture and achieve business objectives.

Employees

3k+

Founded

2001

Domain

coalfire.com

Jobs

View 14 jobs

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Salary

GBP 65000–134000

per year