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Ernst & Young

Ernst & Young

Global professional services: consulting, assurance, tax

Manager Tax - Energy

Full-Time
No salary listed
Mid
London, UK
In Person

About the job

Requirements
  • Strong technical knowledge across United Kingdom and international corporate tax matters.
  • Experience advising multinational businesses, investors or growth-focused organisations on international tax issues.
  • Good understanding of tax issues affecting Energy, Infrastructure, Renewables or wider energy transition businesses.
  • Strong project management skills, with experience managing multiple workstreams and deadlines.
  • A commercial mindset and the ability to apply technical knowledge to practical client situations.
  • Strong client relationship skills, with confidence engaging with tax, finance and operational stakeholders.
  • Experience working on cross-border or multi-jurisdictional advisory projects.
  • Ability to review technical work, provide clear feedback and support the development of junior colleagues.
  • Strong communication, presentation and stakeholder management skills.
  • A proactive approach to identifying opportunities, solving problems and contributing to team growth.
  • ACA, CA, ACCA or CTA qualification; Tax Inspector qualification with full Technical Training Course; or a relevant law qualification.
  • Strong United Kingdom and international corporate tax experience gained within a professional services firm, industry or legal environment.
  • Experience advising businesses or investors on international tax matters, transactions or cross-border projects.
  • Experience managing client deliverables, project workstreams and stakeholder relationships.
  • An interest in, or experience across, the Energy sector, including traditional energy, renewables, infrastructure or wider energy transition markets.
  • Experience coaching or supervising junior members of a team.
Responsibilities
  • Manage and support relationships with Energy sector clients as a key day-to-day contact for tax, finance and wider stakeholder teams.
  • Lead the delivery of international tax and transaction advisory projects, ensuring high-quality technical output and a commercial, pragmatic approach.
  • Support Partners, Directors and Senior Managers in identifying, developing and converting new client opportunities.
  • Manage workstreams on cross-border advisory engagements, coordinating input from colleagues across service lines, sectors and jurisdictions.
  • Review and develop technical analysis, advice and deliverables across United Kingdom and international corporate tax matters.
  • Support the management of engagement economics, billing, risk processes and overall project delivery.
  • Contribute to Energy sector initiatives, business development activity and internal market-facing campaigns.
  • Build internal and external relationships across the EY network to support integrated client delivery.
  • Coach, supervise and develop junior team members, helping to create an inclusive and high-performing team environment.
  • Contribute to innovation, technology adoption and continuous improvement across engagements and internal processes.
Desired Qualifications
  • Experience working with private equity, infrastructure investors or multinational groups.
  • Experience supporting business development activity, proposals or client targeting initiatives.
  • Experience working with multidisciplinary teams across different jurisdictions.
  • A strong interest in market trends affecting the Energy sector and the wider international tax landscape.

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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Simplify's Take

What believers are saying

  • EY's January 2026 acquisitions of couniq and Qiado expand public-sector and FAAS consulting.
  • EY's April 2026 agentic AI rollout strengthens audit quality and client delivery speed.
  • EY's Microsoft alliance and AI assurance services attract transformation work from regulated enterprises.

What critics are saying

  • EY paid £105.5 million over NMC Health in 2026, signaling recurring audit liability exposure.
  • KPMG, Deloitte, and PwC relentlessly poach EY partners after the failed 2021 split.
  • Agentic AI standardizes audit workflows by 2028, compressing billable hours and weakening junior leverage.

What makes Ernst & Young unique

  • EY Canvas embeds agentic AI across 160,000 audits with Microsoft Azure, Foundry, and Fabric.
  • EY-Parthenon ties consulting, assurance, tax, and transactions into one global client platform.
  • EY's sector teams, especially banking and capital markets, deepen specialization across regulated industries.

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Benefits

Professional Development Budget

Flexible Work Hours

Remote Work Options

Company News

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.

Business Insider
Jul 30th, 2026
EY's 'invisible' AI router cuts token costs by 60% by directing queries to cheaper models

EY has introduced an "invisible" AI router to manage internal AI spending, helping cut token consumption by up to 60% since its April rollout. The router sits behind specialised AI tools and directs employee queries to the most appropriate model for each task, rather than defaulting to the most powerful option. Token costs have become a growing concern as AI providers increasingly charge based on usage. EY's AI Pulse survey found that 82% of senior leaders at companies investing in AI were worried about token usage. The router has been deployed on department-specific platforms, including tax and risk functions, though not on the general Microsoft Copilot chatbot available to all staff. EY has also implemented token budgets based on employees' roles and departments. The firm's global consulting AI leader Dan Diasio said companies should focus AI investment on areas with the deepest impact rather than spreading resources thinly.

Yahoo Finance
Jul 29th, 2026
FRC fines EY $1.5M over Made.com audit failures before 2022 collapse

The UK's Financial Reporting Council has fined EY nearly £1.2m and audit partner Julie Carlyle £49,000 for failings in their 2021 audit of Made.com. Both received severe reprimands for breaching international auditing standards regarding going concern and deferred tax assets. The FRC said the auditors relied on management forecasts without sufficient challenge or adequate testing. Made.com, an online furniture retailer that listed on the London Stock Exchange in June 2021, entered administration in November 2022 after reporting a £35.3m loss. EY later disclaimed its opinion on Made.com's 2022 interim statements due to material uncertainty about the company's ability to continue operating.