Penetration Tester - Permanent - Fully Remote in Chelmsford, Essex
Penetration Tester - Permanent - Fully Remote

Penetration Tester - Permanent - Fully Remote in Chelmsford, Essex

Chelmsford +1 Full-Time 55000 - 90000 £ / year (est.) No home office possible
Oscar Associates (UK) Limited

At a Glance

  • Tasks: Conduct penetration tests on web apps, APIs, and infrastructure while leading client engagements.
  • Company: Join a top UK consultancy with a dedicated offensive security team.
  • Benefits: Enjoy a competitive salary, remote work, travel expenses, and an overnight bonus.
  • Other info: Opportunities for mentorship and career growth in a dynamic environment.
  • Why this job: Make a real impact in cybersecurity while working flexibly from anywhere.
  • Qualifications: Experience in penetration testing and strong communication skills required.

The predicted salary is between 55000 - 90000 £ per year.

We are looking for experienced Penetration Testers to join one of the UK's larger dedicated offensive security practices. With a team of around 70 testers split across CHECK and CREST work, this is a well-established consultancy delivering high-quality assessments across a broad client base, with genuine variety in engagement type, sector, and technical depth.

Multiple roles are available across mid and senior levels, and the company is flexible on starting clearance level. This role is fully remote with client site visits as required.

  • Deliver web application, API, and infrastructure penetration tests, taking ownership of engagements end-to-end from scoping through to final report delivery.
  • Lead client-facing engagements, communicating high-risk findings as they are identified to support swift remediation.
  • Produce clear, professional reports tailored to client-specific context and business risk.
  • Contribute to internal QA, mentor more junior consultants, and support report quality across the team.
  • Hands-on experience delivering web application, API, and/or infrastructure penetration tests in a professional consultancy setting.

Salary: £55,000 - £90,000, depending on experience, certifications and clearance level.

Benefits include:

  • Fully remote working
  • Overnight bonus for client site visits
  • Travel and expenses covered for client work
  • Company pension scheme

Locations

Chelmsford Essex

Penetration Tester - Permanent - Fully Remote in Chelmsford, Essex employer: Oscar Associates (UK) Limited

Join a leading offensive security consultancy that values your expertise and offers a fully remote working environment, allowing you to balance your professional and personal life seamlessly. With competitive salaries, generous travel expenses, and opportunities for mentorship and professional growth, this company fosters a collaborative culture where your contributions are recognised and rewarded. Experience the thrill of diverse client engagements while being part of a supportive team dedicated to delivering high-quality security assessments.
Oscar Associates (UK) Limited

Contact Detail:

Oscar Associates (UK) Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Penetration Tester - Permanent - Fully Remote in Chelmsford, Essex

✨Tip Number 1

Network like a pro! Connect with fellow penetration testers on LinkedIn or join relevant forums. Engaging with the community can lead to job opportunities that aren't even advertised.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your penetration testing projects, certifications, and any cool hacks you've done. This will give potential employers a taste of what you can bring to the table.

✨Tip Number 3

Prepare for interviews by brushing up on common penetration testing scenarios. Be ready to discuss your approach to different types of tests and how you handle client communications. We want you to shine!

✨Tip Number 4

Don't forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search.

We think you need these skills to ace Penetration Tester - Permanent - Fully Remote in Chelmsford, Essex

Penetration Testing
CHECK Certification
CREST Certification
Web Application Testing
API Testing
Infrastructure Testing
Client Engagement
Report Writing
Quality Assurance
Mentoring
Risk Assessment
Technical Research
Community Involvement

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience in penetration testing, especially with web applications and APIs. We want to see how your skills match the role, so don’t be shy about showcasing relevant projects or certifications!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re passionate about offensive security and how you can contribute to our team. Keep it professional but let your personality come through – we love a bit of character!

Showcase Your Technical Skills: In your application, mention any tools or methodologies you’ve used in your penetration testing work. Whether it's Hack The Box or TryHackMe, we want to know what makes you tick and how you stay sharp in this ever-evolving field.

Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It’s super easy, and you’ll be able to see all the details about the role and our company while you’re at it!

How to prepare for a job interview at Oscar Associates (UK) Limited

✨Know Your Stuff

Make sure you brush up on your technical skills related to penetration testing. Familiarise yourself with the latest tools and techniques, especially those relevant to web applications, APIs, and infrastructure. Being able to discuss your hands-on experience confidently will impress the interviewers.

✨Tailor Your Approach

Research the company and its client base before the interview. Understand their specific needs and challenges in offensive security. This will help you tailor your responses and demonstrate how your skills can directly benefit them, making you a more attractive candidate.

✨Showcase Your Communication Skills

As a Penetration Tester, you'll need to communicate complex findings clearly. Prepare to discuss how you've effectively communicated high-risk vulnerabilities in past roles. Practising explaining technical concepts in simple terms can really set you apart during the interview.

✨Engage with the Community

Mention any involvement in the cybersecurity community, such as participating in Hack The Box or TryHackMe. This shows your passion for the field and commitment to continuous learning. It also highlights your ability to stay updated with industry trends, which is crucial for a role like this.

Penetration Tester - Permanent - Fully Remote in Chelmsford, Essex
Oscar Associates (UK) Limited
Location: Chelmsford

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