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Ernst & Young

Global professional services: consulting, assurance, tax

Cyber Defense Incident Responder

Full-TimeUpdated on 10/15/2026
No salary listed
Senior
Bachelor's, Master's
Diegem, Machelen, Belgium
In Person
CybersecuritySecurity Operations & Incident Response

About the job

Requirements
  • A bachelor's or master's degree in Computer Science, Information Systems, Engineering, a related field, or equivalent experience.
  • At least seven years of experience in at least two of the listed roles, including a minimum of three years as a Security Operations Center Analyst or Manager; other qualifying roles include Cybersecurity Incident Coordinator, Cybersecurity Threat Intelligence, Cybersecurity Detection Engineering, other relevant Cyber Defense functions, Attack and Penetration Testing (Active Defense), or eDiscovery or a related role performing forensic functions.
  • Deep understanding of security threats, vulnerabilities, and incident response.
  • Understanding of electronic investigation, forensic tools, and methodologies, including log correlation and analysis, forensic handling of electronic data, computer security investigative processes, and malware identification and analysis.
  • Basic understanding of legalities surrounding electronic discovery and analysis.
  • Understanding of regulatory stipulations regarding security incidents.
  • Experience with security information and event management technologies such as Splunk or Sentinel.
  • Understanding of Windows and Unix/Linux operating systems.
  • Willingness to be on-call during off-hours in rotation with other team members.
  • Comprehension of the incident response lifecycle in theory and practice.
  • Ability to coordinate complex, global cybersecurity incidents from incident declaration through resolution.
  • Ability to identify cybersecurity incident gaps and drive post-incident lessons learned efforts to resolution.
  • Comprehensive knowledge of Information Security domains and associated technologies to collaborate with partnering teams and support eradication, remediation, and identification and assignment of gaps during cybersecurity incident response.
  • Ability to analyze investigative findings and develop fact-based reports.
  • Ability to identify and articulate improvement opportunities while driving lessons-learned activities.
  • Ability to demonstrate integrity and judgment in a professional environment.
  • Inquisitive approach to analysis and peer review.
  • Ability to apply emotional intelligence and remain calm under pressure.
  • Ability to balance work and personal priorities.
  • Ability to work independently.
  • Global mindset for working across cultures and backgrounds while fostering lasting relationships.
  • Knowledge of business-industry-standard security incident response processes, procedures, and lifecycle.
  • Organizational skills and attention to detail.
  • Teaming and management skills.
  • Social, communication, and writing skills.
  • Customer service skills.
Responsibilities
  • Coordinate response efforts to cybersecurity incidents caused by external threats, which may involve nontraditional working hours.
  • Serve as a liaison and relationship manager to different businesses; interface with team members, colleagues on other Information Security teams, business partners, management, vendors, and external parties.
  • Establish, foster, and maintain relationships with key General Counsel, Data Privacy/Protection, and Risk Management contacts.
  • Manage integration with other corporate incident management programs to ensure consistency and alignment with peer support teams within IT.
  • Lead process and documentation development and improvements for the Cyber & Investigative Services team.
  • Develop and document processes for consistent, scalable response operations, and ensure continuous improvement of the firm's global cybersecurity incident response plan.
  • Collaborate with the Cyber Incident Response lead to review team performance and deficiencies, identify improvement areas, and institute corrective or enhancement programs.
  • Draft communications and provide timely reports and updates to leadership for the role's cases and cases of those reporting to the role during and after incidents.
  • Own and manage the team's internal action playbooks and knowledge base.
  • Drive cybersecurity incident gap identification and post-incident lessons-learned activities through resolution.
  • Analyze findings in investigative matters and develop fact-based reports.
Desired Qualifications
  • Hold or be willing to pursue related professional certifications such as GCFE, GCFA, GCIH, CISA, CISM, CISSP, or CCIM.

About the company

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.

Company Size

5,001-10,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Boston, Massachusetts

Founded

1991

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What believers are saying

  • EY.ai Agentic for Sales launched March 2, 2026 with Snowflake and Canva.
  • EY uses client-zero deployments, scaling Copilot across 400,000 people by May 2026.
  • EY’s 2026 AI assurance push monetizes client demand for governance, controls, and risk reviews.

What critics are saying

  • Sabah filed RM2.4 billion audit-negligence claims against EY on July 30, 2026.
  • EY set aside £188 million in March 2026 after NMC, Shell, and Made.com scrutiny.
  • Repeated audit failures can destroy trust, trigger client defections, and shrink the franchise permanently.

What makes Ernst & Young unique

  • EY Canvas processes 1.4 trillion journal-entry lines across 160,000 global audits.
  • EY-Microsoft invested US$1b+ in May 2026 to industrialize enterprise AI delivery.
  • EY launched agentic audit AI on April 7, 2026, spanning Assurance and AI assurance.

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Benefits

Professional Development Budget

Flexible Work Hours

Remote Work Options

Company News

Business Insider
Oct 8th, 2026
EY adds nearly 10,000 staff globally as AI revenue surges 50%

EY added nearly 10,000 staff globally in its 2026 financial year as AI-related revenue surged almost 50%. The Big Four firm's workforce reached 415,000, with most growth concentrated in global delivery services and offshoring centres. The Americas division saw headcount decrease by roughly 4,500, or 5%. Overall global revenue rose 4.7% to $57 billion. EY-Parthenon was the fastest-growing service line, with revenue increasing 7.4% to $6.8 billion, marking a turnaround after two years of minimal growth. Tax revenue rose 6% to $13.8 billion, whilst consulting grew 4.4% to $17.4 billion. The results reflect EY's "All-In" strategy under global chair Janet Truncale, with billions invested in transforming operations and AI services.

PR Newswire
Sep 9th, 2026
US oil producers hit record output as capital spending drops 49% and reserve replacement falls

An Ernst & Young study found US oil and gas producers reached record production in 2025 while becoming more selective with investments. The analysis of 30 major exploration and production companies, representing 43% of US oil and gas output, showed oil production hit a study-period high, yet reserve additions from extensions and discoveries declined 11% year over year and failed to fully replace production volumes for the first time since 2021. Total capital expenditures fell 49% year over year, whilst M&A spending declined 70%. Exploration spending dropped 11% to $4.8 billion, representing only 3% of total capital expenditures. Natural gas showed stronger fundamentals, with production rising 18%, reserves increasing 14%, and discoveries up 21%.

Yahoo Finance
Aug 31st, 2026
EY commits $100M to bonuses rewarding human skills alongside AI adoption

Ernst & Young's US division is allocating $100 million this fiscal year to bonus payments rewarding employees who demonstrate adaptability, innovation, and judgement. Individual spot awards reach $500, whilst employees or teams making significant contributions can receive between $10,000 and $25,000, five times the previous programme's ceiling. The initiative also covers AI experimentation. "What we recognise signals what we value," said Ginnie Carlier, chief talent and culture officer for EY Americas. The bonuses form part of a broader strategy to reshape employee development across all career levels. Other professional services firms are pursuing similar approaches. KPMG restructured its audit internship this summer to emphasise critical thinking, whilst PwC US introduced training combining AI proficiency with human qualities like empathy. EY reported AI-related revenue grew 30% year-over-year in 2025.

Consultancy.eu
Aug 28th, 2026
EY-Parthenon acquires Dutch digital strategy consultancy SparkOptimus

EY-Parthenon has acquired SparkOptimus, a Dutch digital strategy consultancy founded in 2010. The Amsterdam-based firm employs around 50 consultants and specialises in AI transformation, digital business model redesign and technology-driven transformation. SparkOptimus founders Alexandra Jankovich and Tom Voskes, both former McKinsey consultants, said joining EY-Parthenon will create significant value for clients and staff whilst providing access to broader capabilities. The acquisition marks EY-Parthenon's first European deal since 2021. EY-Parthenon, established in 2014, is EY's strategy consulting and transactions advisory business with around 25,000 professionals globally. Mark Reich, Partner at EY-Parthenon Netherlands, said SparkOptimus' expertise will complement existing capabilities in the Dutch market. The deal closes on 1 September 2026. Financial terms were not disclosed.

Yahoo Finance
Aug 18th, 2026
KPMG and EY win $579M UK civil servants training contract despite consultancy spending pledge

The UK Government has awarded a contract worth up to £456 million to KPMG and EY to train civil servants, the Financial Times reported, citing government procurement tracker Tussell. Under the arrangement, the firms will train officials across various skills areas, including AI, between 2026 and 2028. KPMG's share is capped at £319 million, representing almost a quarter of its total UK advisory net sales from last year. EY's portion is worth £137 million, equivalent to around 13% of its UK consulting revenue. The deal is the largest single contract awarded to Big Four companies since Tussell started tracking records in 2012. The previous record was a £322 million deal between the Foreign Office and PricewaterhouseCoopers in 2012.