SIEM Engineer
Ernst & Young
SIEM Engineer
Ernst & Young
Global professional services: consulting, assurance, tax
Join our Cybersecurity Engineering team and help organizations strengthen their security posture through the design, implementation, and optimization of modern SIEM and SOAR platforms. As part of our growing cybersecurity practice, you will work on complex international projects across multiple industries, supporting clients in building mature security operations capabilities, improving threat detection, and automating incident response processes.
EY.AI - in this role, you will work in an environment where AI agents are part of the team and everyday project work. You will use solutions tailored to specific domains that help analyze data, generate recommendations, and design solutions. This enables you to move faster from analysis to action and create competitive advantages for clients.
Your scope of duties:
Design and implement enterprise SIEM architectures.
Lead deployments of CrowdStrike NG-SIEM and Splunk solutions.
Onboard security data sources into SIEM ecosystems using native ingestion methods as well as third-party solutions such as Cribl and Apache NiFi.
Develop onboarding strategies and deployment roadmaps for enterprise environments.
Create detection logic, correlation rules, dashboards, and automated queries.
Design and implement automations within enterprise SOAR platforms.
Lead deployments of XSOAR, CrowdStrike Fusion, and Splunk SOAR solutions.
Integrate SIEM platforms and third-party security technologies into SOAR ecosystems.
Fine-tune response workflows and collaborate with SOC teams.
Support clients in improving SIEM and SOAR maturity and transforming their security operations capabilities.
Improve detection coverage and threat visibility across complex IT environments.
Design and implement use cases, detection content, and response automation.
Conduct health assessments and recommend improvements for existing security platforms.
Design integrations using APIs and automation frameworks.
Support platform upgrades, migrations, and cybersecurity transformation initiatives.
Prepare technical documentation, operating procedures, and architecture diagrams.
Advise clients on security best practices and platform optimization.
Participate in projects related to XDR, Security DevOps, AI Security, Cloud Security, and SASE/SSE technologies.
Our requirements:
4+ years of experience in Cybersecurity Engineering, Security Operations, Detection Engineering, or Security Consulting.
Hands-on experience with at least one of the following solutions: CrowdStrike NG-SIEM, Splunk, XSOAR, Cribl, or Apache NiFi.
Strong understanding of cybersecurity operations and threat detection principles.
Experience with SIEM, SOAR, Data Ingestion, or SOC technologies.
Knowledge of incident detection and response processes.
Understanding of network security concepts and common attack techniques.
Experience integrating security technologies and working with APIs.
Knowledge of Windows, Linux, and cloud environments.
Ability to analyze security events and design detection logic.
Strong communication and stakeholder management skills.
Very good command of English and Polish (B2/C1 level).
We will also appriciate:
Experience designing security architectures and large-scale security deployments.
Experience with cloud security technologies (Azure, AWS, GCP).
Knowledge of XDR and Detection Engineering.
Experience with AI Security solutions and governance frameworks.
Experience with SASE/SSE technologies, such as Zscaler.
Familiarity with PowerShell and Python scripting.
Industry certifications such as CrowdStrike, Microsoft Security (SC-200, SC-100, AZ-500), Splunk, CISSP, GCIH, GCIA, or Security+.
What we offer:
Participation in complex international cybersecurity implementation and transformation projects.
Exposure to a wide range of technologies and cybersecurity domains, allowing you to build your own career path.
Opportunity to gain hands-on experience with enterprise-level cybersecurity tools and platforms.
Personalized training programs and learning paths.
Participation in a professional development program.
Flexible working model, including hybrid and remote work options depending on project requirements.
Locations: Warsaw, Lodz, Wroclaw, Gdansk, and other EY offices in Poland.
Professional and financial support in obtaining recognised qualifications and certificates.
EY Badges - global certification of your competencies and the opportunity to earn an MBA title from the prestigious Hult International School of Business.
Career Counselor - professional, one-to-one guidance on career building and development.
Psycho-educational platform - a package of free consultations with specialists in the broad field of mental health and personal development and access to educational activities.
Benefit programme offering private healthcare with additional preventive examinations, life insurance, tickets, team sports, sports cards and much more (available online and offline).
Recruitment stages:
1. Apply. If this is your first time applying, create your profile and upload your CV.
2. Let's talk. You will meet Talent Acquisition specialists and members of your future team.
About EY Poland
We are a global consulting and technology company.
We make a difference by transforming services, products, organisations, and even the rules of the game. We combine business expertise, technology, artificial intelligence, and human talent to help organisations solve complex problems, make better decisions, and implement positive change.
We provide confidence in data, opinions, standards, technologies, and security.
Every day we take on challenges, analyse opportunities, prompt, research, collaborate, ask better questions, plan, model, code, experiment, and learn, creating solutions that are critical for our clients.
This is a place where lifelong friendships, professional relationships, and unforgettable experiences are built. This is where you work on meaningful and challenging projects alongside supportive and exceptional people.
We employ more than 390,000 professionals in over 150 countries worldwide. In Poland, our team of over 7,000 people works in Warsaw, Gdansk, Katowice, Krakow, Lodz, Poznan, Rzeszow, and Wroclaw, as well as in the Global Delivery Services centres in Warsaw and Wroclaw.
We care about the environment, not only the business one. As part of our sustainability commitments, we have reduced our global greenhouse gas emissions by 40% compared to our 2019 baseline.
EY is an equal opportunity employer. We value and promote diversity of knowledge, experience, and perspectives across our community. We foster an environment built on respect, openness, and collaboration, where everyone can grow and make a meaningful impact. Through our "Higher Level Without Barriers" programme, we support employees with disabilities in achieving their professional ambitions and goals.
EY provides equal opportunities to all candidates throughout the recruitment process, regardless of gender, age, race, religion, sexual orientation, national origin, disability, or any other legally protected characteristic, in accordance with applicable law.
Global professional services: consulting, assurance, tax
EY (Ernst & Young) provides professional services at a global scale, offering consulting, assurance, tax, and transaction advisory services. It serves clients across industries such as technology, media, real estate, hospitality, and construction. Instead of selling a single product, EY works with clients through tailored engagements where cross-disciplinary teams analyze challenges, design strategies, perform audits, help with tax planning, and assist with mergers or divestitures. What sets EY apart is its worldwide reach and integrated service model, industry-specific expertise, and focus on responsible business practices like sustainability, cybersecurity, and workforce flexibility. EY’s goal is to help organizations improve performance, manage risk, and achieve sustainable growth while building a better working world.
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