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Ernst & Young

Global professional services: consulting, assurance, tax

Manager Tax - Energy

Full-Time
No salary listed
Mid
London, UK
In Person
ConsultingFinancial & Transaction Advisory

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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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

PR Newswire
Oct 19th, 2026
MedTech revenue hits $650B as M&A value jumps to $130B and financing reaches record $63B

EY's 20th Pulse of the MedTech Industry report finds the global medical technology industry at a turning point, with record financing and dealmaking but growth concentrated among a few leaders. MedTech revenue reached about $650 billion in 2025, up 11%. In the first half of 2026 it hit $325 billion, up 7.1% year on year. Financing hit a record $63 billion in the year to June 30, 2026, up 87%. Initial public offerings and debt made up about 80% of it. M&A value reached roughly $130 billion, the highest in over a decade, driven by a few blockbuster deals. First-half 2026 deal value rose 160% against the same period in 2025. "The broader sector players are at a turning point where discipline is essential to convert innovation into profitable growth," said John Babitt, EY Global MedTech Leader.

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.