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Security Engineer

  • Applications are considered on a rolling basis
  • London
  • Applications are considered on a rolling basis
  • London

Countercept are division at F-Secure who specialise in defending highly targeted organisations against sophisticated cyber-attacks such as those conducted by state-sponsored threat actors and cybercriminal groups. We provide a 24x7 managed detection and response service which defends high profile organisations across a range of sectors including banking/finance, military, legal, telecom and many more.

Countercept is a not just your typical SOC with shiny screens and threat maps - in fact, that is everything we stand against. Having been founded by a team of red-teamers, Countercept has been engineered based on ‘what would stop us’ and a dedication to drive positive change in the industry. We are focused on changing the industries mind-set from the traditional alert-driven approach to one driven by offensively trained, proactive threat hunters who can use their knowledge of the adversaries TTPs to detect attacker activity that the traditional approach would miss.

Countercept’s hunt team compromises a number of sub teams: the threat hunting team who uncover adversaries on our client’s networks, incident responders who contain attacks, the research team who uncover new and emerging offensive and defensive techniques, and the Security Engineering team who maintain and develop the attack detection infrastructure to ensure it remains at the bleeding edge.

As an engineer in the Security Engineering team, you will...

  • Be part of MDR Technical Operation Team, work with the Devops team and our clients to deploy, maintain and develop the attack detection infrastructure and platform to ensure the threat hunting team and incident response teams can perform at their very best.
  • Deploy the latest code as it is released by our R&D team
  • Write custom log parsers, detection rules, use cases, and get creative with our extensive data sets to aid the discovery of advanced threat actors across our client base.
  • Support, maintain and optimise Elasticsearch clusters
  • Write and deploy custom log parsers
  • Maintain the attack detection application stack to ensure it remains fully functioning, operational and updated to the latest version
  • Maintaining high levels of security across the Countercept infrastructure through the design and implementation of security controls and co-ordination of penetration tests.

Who we think will be a great fit...

  • A solid passion for cybersecurity
  • Experience with Linux (servers and services preferable)
  • Python/coding skills
  • Creatively-minded, able to work to find solutions to unique problems

Bonus Points For....

  • Knowledge of attacker techniques and methodologies
  • Experience working with Elasticsearch (or similar NoSQL)
  • Experience with Redhat/CentOS
  • Proven experience contributing to open source projects
  • Experience designing/implementing enterprise security controls
  • Experience with Attack Path Mapping exercises

Who we are...

F-Secure delivers research-led cyber security to defend organizations from real-world attacks and build resilience into their approach. Our people are a mix of technical and creative experts – diverse, talented, and passionate people – working tirelessly to help us advance the industry with new ways of thinking. They lead their own development, in and out of the office. They call the shots when it comes to building a place to call home in our organization.

Work with great people

Javier Moreno
Senior Security Consultant
"My passion for security comes from understanding how things work. Once you do, you can control it"
Karolina Malagocka
Senior Service Marketing
"At F-Secure we see the value of each and every person"
Zuzanna Kunik
Junior Data Scientist
"As a data scientist, I love working closely to data. As an extrovert, I love working with people. In my current role I’m doing both. "
Jonas Lundberg
Global Cyber Security Solution Sales
"I feel confident in selling our services that protect our customers. It's extremely stimulating and gives me a sense of purpose"
Robert Petesic
Senior Security Specialist
"Positive atmosphere in the office and knowledgeable colleagues are pushing me to always give my best and learn more."
Ruediger Trost
Pre-Sales Manager
"After more than 11 years, I still go to the office with a smile, even if it is a Monday morning =)"
ROBERT GRZEŚKOWIAK
Lead Quality Engineer
"I chose F-Secure because it gives you a great variety of experiences that you can benefit from the security perspective. "
MACIEJ KUCHARSKI
Lead Software Engineer
"You don’t feel like working in a big company, people are open and the atmosphere is very good"
PIOTR DYBA
Manager
"Every day comes with new challenges and surprises so it is impossible to get bored, especially in my team."
HASSAN MANSOOR
Junior Developer
"In my opinion F-Secure is the best place to work in Poland especially because here you have a lot of freedom at work. "
MARCIN TAMIOŁA
Senior Systems Engineer
"Best part of my current work is to have a real influence on the direction my team and work is going in."
Tinus Green
Information Security Consultant
"The fact that F-Secure performs research driven security work is the reason I work here."
Sean Nel
Senior Software Engineer
"If you like working on cool, new stuff with lekker people"
Annike Taljaard
Associate Information Security Consultant
"With the supportive company structure, we are encouraged not just to grow, but to grow in the direction that we want."
Jaco Erasmus
Ruby Developer
"In my two years at F-Secure, It has been amazing to work for an industry-leading company with a very energetic, positive and engaging culture."
Joanna Tórz
Senior Developer, Team Leader
"Nothing beats friendly but professional atmosphere, interesting daily challenges and the culture of growth as an individual and as a Team!"

Great Place to Work

  • Over 1,700 amazing colleagues in nearly 30 offices

  • Possibility to protect the world

  • Work with best of class experts who care

  • Relaxed, open and fun working environment

  • 68+ of nationalities

  • Global with the spirit of a small company

About the company

At F-Secure, we are committed to helping people and businesses be free in the digital world, without having to worry about cyber security. Every day, our Fellows face the daunting challenge of outsmarting those that disrupt the digitalized world. A difficult task, we know, but something we all come together to do for our customers. We make the world a safer place.

Our Fellowship of people have a shared interest in being successful together and being open and honest with each other. At F-Secure, we meet each other as equals, but challenge each other’s ideas – we believe this makes us all better and creates a more secure environment for our customers.

As an F-Secure Fellow, you’ll be joining a tight knit network of over 1,600 colleagues, spread over 25 offices around the world. To us, Fellowship means that what we do together is more important what I do. At F-Secure you will be part of our Fellowship. Be who you are – bring your best self.


1988F-Secure established under the name Data Fellows

1992First public hysteria about a computer virus

2002First Antivirus for mobile phones

2004F‑Secure Labs launches first antivirus industry blog

2009F‑Secure’s next step into the cloud

2015F-Secure aims to become the leading European cyber security company

2018MWR InfoSecurity joins F-Secure

Danielle Acott | Hiring Manager

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