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Ernst & Young

Global professional services: consulting, assurance, tax

Technology Consulting Cyber Security Architect Senior Manager/Manager

Full-TimeUpdated on 10/14/2026
No salary listed
Senior
Bachelor's, Master's
Dublin, Ireland
HybridClient-facing professionals may travel regularly and may work at client sites.
CybersecuritySecurity Engineering & Architecture

About the job

Requirements
  • At least 7 years of experience in technical cybersecurity roles advising on the design, implementation, and testing of security controls across sectors.
  • Experience auditing compliance frameworks such as PCI, ISO, or HIPAA.
  • Experience in a Big Four or similar consultancy in the Irish market.
  • A track record supporting delivery of a broad range of cybersecurity controls and projects in an enterprise environment.
  • Strong analytical skills to solve technical issues and flexibility in handling multiple issues at once.
  • Experience in application, mobile, Internet of Things, cloud, infrastructure, or network security controls.
  • Programming or scripting experience with PowerShell, ASP, .NET, Python, or Perl.
  • Experience with log analysis and configuration reviews across infrastructure components, including servers, firewalls, web application firewalls, SIEM, and VMware.
  • Security engineering or architecture experience; SABSA is an advantage.
  • Knowledge of continuous integration and continuous delivery is an advantage.
  • Experience specifying and performing vulnerability analysis and reviewing penetration-test and scan results.
  • Excellent communication and project management skills, verbal and written.
  • Excellent organizational and problem-solving skills, with strong attention to detail.
  • Working knowledge of Microsoft PowerPoint, Word, Excel, and online research tools.
  • Ability to prioritize, work to tight deadlines, and manage one's own caseload.
  • Ability to learn quickly, work under pressure, and express complex issues concisely to clients.
  • An enquiring mind, tenacity to overcome technical challenges, and ability to approach problems from different perspectives.
  • An undergraduate or master's degree, preferably in Information Security, Cyber Security, Cloud Computing, Information Systems, Computer Science, Engineering, or an equivalent area; equivalent industry certification is also referenced.
  • Industry-related certification is preferred, such as CISSP, CISM, SANS, SABSA, or TOGAF.
  • Cloud security credentials such as Azure AZ-900, AZ-500, and AWS Security are an advantage.
Responsibilities
  • Assist with security architecture design reviews throughout the lifecycle of complex projects across technologies and platforms for client digital solutions.
  • Determine security requirements and plan, implement, and test security systems to secure enterprise information.
  • Prepare security standards, policies, and procedures.
  • Mentor team members.
  • Take responsibility for project security review reports, follow them through to completion, liaise with security and project stakeholders, provide security posture advice, and ensure formal security approval of go-live scenarios.
  • Independently lead and support remote teams performing complex architecture reviews in varied environments, liaising with teams across client sites.
  • Design and implement enterprise security and solution security architectures for large organizations using frameworks such as SABSA and TOGAF.
  • Implement cybersecurity controls using practices and frameworks such as NIST CSF, NIST 800-53, OWASP, CIS, ISO 27001, and COBIT.
  • Maintain compliance with regulations and standards such as NISD, GDPR, and PCI-DSS while executing security architecture design reviews and advice, audits, and reporting.
  • Identify security vulnerabilities, remediate application security issues, and apply threat-modeling approaches such as cyber kill chain, STRIDE, and exposure analysis.
  • Prepare system security reports by collecting, analyzing, and summarizing data and trends for project, operational, and project-governance reporting.
  • Keep up to date with current security threats, trends, and control solutions.
  • Participate in implementing or deploying new tools, processes, and best practices to improve knowledge sharing and raise security levels while promoting security awareness among team members.
  • Project-manage consultancy projects and motivate teams.
  • Work with client stakeholders and teams across client sites; client-facing professionals may travel regularly and may be based at client sites.
Desired Qualifications
  • Government, transport, or financial-sector experience.
  • Experience securing cloud environments, with strong network and hybrid cloud/on-premises experience.
  • SABSA experience.
  • Knowledge of continuous integration and continuous delivery.
  • An undergraduate or master's degree preferably in Information Security, Cyber Security, Cloud Computing, Information Systems, Computer Science, or Engineering, or an equivalent industry certification.
  • Industry-related certifications such as CISSP, CISM, SANS, SABSA, or TOGAF.
  • Cloud security credentials such as Azure AZ-900, AZ-500, or AWS Security.

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.

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  • 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.