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Ernst & Young

Global professional services: consulting, assurance, tax

Senior Red Team & Offensive Security Consultant

Full-TimeUpdated on 10/14/2026
No salary listed
Senior
Tel Aviv-Yafo, Israel
In Person
CybersecurityOffensive Security & Testing

About the job

Requirements
  • At least 7 years of experience in offensive security or related technical fields, including at least 4 years in Red Team, adversary simulation, or advanced infrastructure penetration testing.
  • Proven ownership of complex Red Team engagements from planning through delivery.
  • Hands-on experience executing multi-stage attack chains in complex enterprise environments.
  • Strong knowledge of Active Directory, Windows, authentication, identity attack paths, networks, endpoints, and defensive controls.
  • Hands-on experience with offensive tooling, command-and-control frameworks, scripting, and tool customization.
  • Practical understanding of adversary tactics, techniques, and procedures and MITRE ATT&CK.
  • Ability to work independently and communicate with clients, including writing reports in English.
Responsibilities
  • Take ownership of assigned Red Team, adversary emulation, Purple Team, and threat-led offensive security engagements, from planning and rules of engagement through execution, reporting, and client debrief.
  • Emulate realistic threat actors and execute multi-stage attack chains, including reconnaissance, initial access, persistence, privilege escalation, credential access, lateral movement, command and control, defense evasion, and achievement of agreed business objectives.
  • Design threat-informed scenarios and map adversary tactics, techniques, and procedures to MITRE ATT&CK and other relevant threat-led testing frameworks.
  • Assess enterprise environments across Active Directory, Microsoft Entra ID, endpoints, networks, applications, cloud platforms, identity systems, and hybrid infrastructure, chaining weaknesses into realistic attack paths and business impact.
  • Develop, customize, and maintain offensive tooling, scripts, payloads, command-and-control infrastructure, and operational tradecraft while applying appropriate safety and operational-security controls.
  • Work closely with SOC, detection engineering, incident response, and security architecture teams to validate detection and response capabilities and translate observed gaps into actionable improvements.
  • Communicate directly with clients, present technical and executive results, and provide risk-based recommendations aligned with the client’s threat landscape and business priorities.
  • Contribute to technical quality reviews, knowledge sharing, research initiatives, reusable methodologies, and the continued development of the team’s Red Team capabilities.
Desired Qualifications
  • Experience with cloud or hybrid environments, Purple Team exercises, detection validation, or EDR/XDR evasion.
  • Advanced certifications, threat-led testing, security research, or custom tool development.

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.