Job offer

Security analyst

Category: IT

Location: Dublin,

Job type: Permanent, Fulltime

Apply now!

We are currently looking for a Security Analyst for our client, a leading IT company in Dublin.


What we will do for you

  • On a daily basis, you'll find the most malicious attacker activity the Internet has to offer
  • Let you scour systems and analyze tons of network traffic looking for attacker presence
  • Be Challenged to evolve how we detect and respond to attackers by authoring new and innovative Indicators of Compromise
  • Expose you to some of the most exciting and cutting edge techniques to find evil
  • Training and continuous coaching and mentoring to grow your technical and professional skills like no one else
  • Work with a team of brilliant people that you can learn from and build lasting relationships with
  • Develop an understanding of your aspirations and provide opportunities that we believe will get you there
  • Inspiration to stretch your performance by allowing you to tackle seemingly impossible problems
  • Encouragement challenge the status quo, think creatively, and innovate –make us better
  • An environment of trust and camaraderie, where you can speak freely about your ideas
  • A platform from which you can make a real impact against the bad guys
  • Develop an understanding of, and be flexible to, your needs

What you can do for us

  • Get your toolbox out and dive deep into systems to help us identify and eradicate attackers
  • Use your insanely keen network analysis skills to find evil on the wire
  • Define relationships between seemingly unrelated events through deductive reasoning
  • Come up with ways to do things faster, better and more effectively while maintaining a laser focus on quality
  • Be fanatical about delighting our customers
  • Be honest, transparent and genuine with our customers and your peers
  • Exude excellence
  • Make sure you have fun – lots of it
  • Help us protect the world
  • Work hard, but smart; balance your work and life

What you can bring with you

  • The ability to analyze event and systems logs, perform forensic analysis, analyze malware, and other incident response related data, as needed.
  • Deep understanding of incident response best practices and processes
  • Familiarity with intrusion detection systems (e.g., snort) and tools (e.g., tcpdump, Wireshark).
  • Knowledge of attack vectors, threat tactics and attacker techniques.
  • Familiarity with network architecture and security infrastructure placement.
  • Understanding of Windows operating systems and command line tools.
  • A solid foundation in networking fundamentals, with a deep understanding of TCP/IP and other  core protocols.
  • Knowledge of network based services and client/server applications.
  • Your bachelors degree – or a very convincing argument.

Additional qualifications

  • Degree in computer science, or related discipline
  • Experience working on a mission critical security operations team, preferably 24x7.
  • Exemplary communication and interpersonal skill.
  • Ability to document and explain technical details clearly and concisely.
  • A willingness to be challenged and a strong desire to learn.
  • An open mind and an appetite for excellence


  • Wireshark
  • Understand a signature
  • Protocol - timing, data sizes, commands
  • Context - inbound vs outbound (webshells), DNS servers vs HTTP proxy
  • Components - C2 interaction vs beaconing vs profiling
  • Knowing the Internet - identifying something as legitimate vs malicious
  • Intel querying vs OSINT
  • Knowledge of protocols - SMB, HTTP Proxy, DNS, ICMP
  • Netflow Analysis
  • Perform queries to gain additional context
  • Understanding ports, sessions length, direction
  • DNS & HTTP
  • Collect and analyse DNS/HTTP logs for additional context
  • Signatures
  • Identify issues with signatures and propose improvements


  • Hit Review
  • Understand a signature
  • IOCs intent - what it's looking for, what it hit on, caveats
  • Context - malware, decoy, side-loaded DLL (legit binary), tools, methodology
  • Triaging
  • Collecting forensic information to determine TP vs FP
  • Malware triaging - assessing MTA and performing dynamic analysis in VM
  • Signatures
  • Identify issues with signatures and propose improvements
  • Live Response
  • Build LR timelines under supervision
  • Threat Intel
  • Understand how malware and tools are used by the threat actors

Apply now


Position: Security analyst

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