Network Firewall & Software Manual Testing Engineer
Network Firewall & Software Manual Testing Engineer

Network Firewall & Software Manual Testing Engineer

London Full-Time 42000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Conduct manual testing on firewalls and software to ensure security and performance.
  • Company: Substance is a dynamic company focused on network security and software solutions.
  • Benefits: Expect quick feedback on your application and a culture that values real connections.
  • Why this job: Join a team that prioritises quality assurance and continuous improvement in a tech-driven environment.
  • Qualifications: Bachelor’s degree in IT or related field; experience in manual software testing preferred.
  • Other info: This is a full-time role based in Greater London, ideal for tech enthusiasts.

The predicted salary is between 42000 - 84000 £ per year.

Substance is seeking a detail-oriented and experienced Network Firewall & Software Manual Testing Engineer to join our growing team. In this role, you will be responsible for ensuring the robustness and security of network systems by conducting comprehensive manual testing on firewalls and related software applications. You will work closely with development teams to validate security configurations and functionality, identifying vulnerabilities and performance issues before they affect the production environment.

Key Responsibilities

  • Conduct manual testing of firewall and hotspot gateway software to ensure reliability and performance.
  • Document all test cases, results, and observations using Excel or related software tools.
  • Identify, log, and track bugs and defects, ensuring they are properly reported and addressed by developers.
  • Perform various testing methodologies, including functional testing, regression testing, performance testing, and unit testing.
  • Collaborate with developers and network engineers to troubleshoot and validate fixes.
  • Take full ownership of assigned tasks, ensuring quality assurance objectives are met.
  • Ensure compliance with network security standards and best practices.
  • Continuously improve test cases and contribute to process enhancements.

Job Competencies

  • Software Testing & Manual Testing (including Functional, Regression, Unit, and Performance Testing)
  • Computer Networking principles and security protocols
  • Strong logical reasoning and problem-solving skills
  • Ability to work independently and take ownership of assigned tasks
  • Experience with bug tracking and test case documentation tools is a plus

Requirements

  • Bachelor’s degree in Computer Science, Information Technology, or a related field.
  • Experience in manual software testing within networking or cybersecurity environments.
  • Familiarity with firewall and network security concepts.
  • Strong analytical and troubleshooting skills.
  • Experience with testing tools and Excel-based test documentation.

Benefits

At Substance, we value action over words. If your profile aligns with our needs, expect to hear from us within 1-2 weeks. If not, no fluff—just know we appreciate your interest and will keep you in mind for future roles where your expertise can make an impact. We focus on real connections and meaningful matches, ensuring the right opportunity finds you at the right time.

Network Firewall & Software Manual Testing Engineer employer: Substance

At Substance, we pride ourselves on fostering a collaborative and innovative work culture that empowers our employees to take ownership of their roles. Located in the vibrant Greater London area, we offer competitive benefits and opportunities for professional growth, ensuring that our team members can thrive both personally and professionally. Join us to be part of a forward-thinking company that values meaningful contributions and real connections.
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Contact Detail:

Substance Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Network Firewall & Software Manual Testing Engineer

✨Tip Number 1

Familiarise yourself with the latest trends in network security and firewall technologies. This knowledge will not only help you during interviews but also demonstrate your genuine interest in the field.

✨Tip Number 2

Network with professionals in the cybersecurity and software testing communities. Attend relevant meetups or webinars to build connections that could lead to referrals or insider information about the role.

✨Tip Number 3

Prepare for technical interviews by practising common manual testing scenarios and troubleshooting exercises. Being able to articulate your thought process will impress interviewers and show your problem-solving skills.

✨Tip Number 4

Research Substance as a company, including their values and recent projects. Tailoring your conversation to align with their mission can set you apart from other candidates and show that you're a good cultural fit.

We think you need these skills to ace Network Firewall & Software Manual Testing Engineer

Manual Software Testing
Functional Testing
Regression Testing
Performance Testing
Unit Testing
Computer Networking Principles
Network Security Protocols
Bug Tracking
Test Case Documentation
Analytical Skills
Troubleshooting Skills
Attention to Detail
Excel Proficiency
Collaboration Skills
Problem-Solving Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in manual software testing, particularly within networking or cybersecurity environments. Emphasise your familiarity with firewall and network security concepts.

Craft a Strong Cover Letter: In your cover letter, express your enthusiasm for the role and how your skills align with the responsibilities outlined in the job description. Mention specific testing methodologies you have experience with, such as functional or regression testing.

Showcase Your Problem-Solving Skills: Provide examples in your application that demonstrate your analytical and troubleshooting abilities. Discuss any past experiences where you identified and resolved bugs or performance issues in software applications.

Highlight Collaboration Experience: Since the role involves working closely with developers and network engineers, mention any previous collaborative projects. Describe how you contributed to team efforts in troubleshooting and validating fixes.

How to prepare for a job interview at Substance

✨Showcase Your Testing Experience

Be prepared to discuss your previous experience with manual testing, especially in networking or cybersecurity environments. Highlight specific projects where you conducted functional, regression, or performance testing, and be ready to explain the methodologies you used.

✨Demonstrate Your Problem-Solving Skills

Since the role requires strong analytical and troubleshooting skills, think of examples where you identified and resolved bugs or vulnerabilities. Use the STAR method (Situation, Task, Action, Result) to structure your responses effectively.

✨Familiarise Yourself with Network Security Concepts

Brush up on your knowledge of firewall and network security principles. Be ready to discuss how these concepts apply to manual testing and how you ensure compliance with security standards during your testing processes.

✨Prepare Questions for the Interviewers

Interviews are a two-way street! Prepare insightful questions about the team dynamics, testing tools they use, and their approach to continuous improvement in testing processes. This shows your genuine interest in the role and helps you assess if it's the right fit for you.

Network Firewall & Software Manual Testing Engineer
Substance
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  • Network Firewall & Software Manual Testing Engineer

    London
    Full-Time
    42000 - 84000 £ / year (est.)

    Application deadline: 2027-07-11

  • S

    Substance

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