Controller (m/w/d)
RES
Company Overview
Renewable Energy Systems (RES)
Hertfordshire, United Kingdom
1981
Approximately 2,500 employees globally (source: linkedin.com). No publicly disclosed revenue figures for 2023.
What They Do
RES focuses on a diverse range of renewable energy technologies, including wind (both onshore and offshore), solar photovoltaic (PV), battery energy storage systems (BESS), and green hydrogen solutions. The company provides comprehensive services that span the entire lifecycle of renewable energy projects, from initial development and engineering to construction, operations and maintenance (O&M), asset management, and financing. Their expertise allows them to deliver utility-scale projects that meet the growing demand for sustainable energy solutions across various markets, including utilities, corporates, and governments (source: res-group.com).
Projects & Track Record
RES has an impressive portfolio of completed projects, including the 278MW King Mountain Wind Farm in Texas, which was completed in 2001 and was the world's largest at the time. Other notable projects include the 90MW Inner Dowsing offshore wind farm in the UK and the 270MW Lincs offshore wind farm, both of which have contributed to RES's reputation as a leader in the renewable energy sector. The company has also developed significant solar projects, such as the 30MW Webberville solar park in Texas, showcasing its versatility in renewable energy solutions (source: res-group.com).
Recent Developments
In recent years, RES has made significant strides in expanding its project portfolio and capabilities. In 2024, the company secured a Generation License for the 70MW Elmacık Wind Power Plant in Turkey and advanced the development approval for the Tarong West Wind Farm in Queensland, Australia, which is set to provide power for approximately 230,000 homes. Additionally, RES has partnered with Octopus Energy on a £3 billion investment in green hydrogen in the UK, further solidifying its commitment to innovative renewable energy solutions (source: keyfactsenergy.com).
Working There
RES offers a variety of roles across multiple departments, including development, engineering, construction, operations and maintenance, asset management, finance, and legal services. The company emphasizes a collaborative culture, with a commitment to diversity and inclusion, and provides a stimulating work environment for its employees. The global headquarters in Kings Langley, UK, features modern facilities designed to support employee well-being, such as bike racks and showers, promoting a healthy work-life balance (source: res-group.com).
Last updated on 2026-02-23 | Report an issue
We are committed to building a workplace where everyone feels heard and respected, and extending our culture of care so that every individual can reach their full potential. We want you to have a sense of belonging and feel valued for your contributions and the perspectives you bring.
Job Description
The Controller is the senior accounting leader responsible for the accuracy, integrity, compliance and timeliness of the company's financial records and reporting. The scope of this role oversees $1B business, covering the USA and Canada. This role owns all accounting operations, establishes robust internal controls, and serves as the primary guardian of the balance sheet. The Controller provides executive leadership with solid, timely financial information and proactive balance sheet risk management to drive informed strategic decisions. In addition, the Controller is a strategic leader responsible for overseeing tax operations, treasury functions, ERP integration, and strategic initiatives ensuring robust internal controls. This role will require 5 days in office.
Requirements
- Directs all Americas accounting operations, including general ledger, accounts payable/receivable, fixed assets (with tracking, safeguarding, and minimum quarterly physical counts), revenue recognition, USD/CAD consolidations, and complex month-end/year-end closes.
- Serves as technical accounting and tax expert, ensuring timely, accurate financial statements and regulatory filings compliant with U.S. GAAP, Canadian GAAP/IFRS (as applicable), and federal, state/provincial, and local tax regulations.
- Develops and executes Americas accounting and tax strategies aligned with organizational priorities, including tax planning, structuring, and optimization for U.S./Canadian operations; oversees tax/financial due diligence and post-transaction integration for M&A/divestitures, identifying risks, liabilities, and opportunities while ensuring U.S./Canadian compliance.
- Delivers actionable financial and tax insights/recommendations to the CFO and executive team.
- Designs, implements, monitors, and enhances internal controls and risk-mitigation frameworks to manage balance sheet risks (liquidity, credit, reserves, contingencies) and safeguard financial integrity.
- Serves as primary liaison to external auditors, tax advisors, and U.S./Canadian regulators; leads year-end audits for efficient, clean outcomes.
- Drives process improvements, automation, and efficiency in accounting, tax, reporting, and controls; leads ERP/system implementations and post go-live stabilization and improvements, including integrations aligning accounting, tax, and cross-functional processes.
- Builds, leads, and develops high-performing Americas accounting/tax teams, fostering a collaborative, inclusive, high-accountability culture.
- Collaborates with FP&A, Treasury, Legal, and other functions to boost financial transparency, tax efficiency, and regulatory adherence.
- Leads CFO-directed special projects, including M&A integration, tax optimization, and financial system transformations.
Safety
- Follows safety and security procedures and determines appropriate action. Reports potentially unsafe conditions and uses materials and equipment properly.
- Presents, supports, and leads-by-example with a safety and quality-oriented attitude.
- Leads by example to show that safety is the most important function, ensuring that all employees follow safe practices while working.
- Accountable to continually reinforce safe behaviors and correct "at risk" behaviors.
- Adheres to and ensures all site team members understands standard operating procedures.
- Leads and supports the site team in technical, quality and safety, utilizing system in place.
Leadership
- Fosters and demonstrates a workplace inclusive of creating opportunity, serving others, building trust, innovation, and exceeding expectations.
- Manages one or more direct reports.
- Participates in hiring and selection process to fill positions on the team.
- Communicates regularly with direct reports on goals, accomplishments, and information on policies.
- Demonstrates leadership and expertise in eyes of client group.
- Employee Development:
- Provides tasks and assignments that challenge and stretch employees' responsibilities.
- Conducts regular discussions with employee(s) on personal development. Comfortable with empowering others.
- Conducts timely, effective performance reviews in accordance with RES guidelines.
Qualifications
- Bachelor's degree in Accounting or Finance; active CPA certification (or equivalent), required.
- 12+ years progressive accounting experience, including 5+ years as Controller/Assistant Controller in public accounting (Big 4/large regional) or public company, required.
- MBA or Master of Accountancy in Accounting/Finance, preferred.
- Background in energy, construction, or project-based industries, with proven track record in balance sheet management, risk mitigation, multi-currency reporting, and project accounting.
- Deep expertise in U.S. GAAP, IFRS, complex topics, financial reporting, consolidations, and internal controls.
- Strong leadership in building/mentoring high-performing accounting/tax teams.
- Advanced proficiency in ERP systems (e.g., NetSuite, SAP, Oracle, Microsoft Dynamics, IFS), including 1+ years leading implementations, post-go-live stabilization/improvements, tax due diligence, and compliance, required.
- Proficiency in Microsoft Office (Excel, Word, Outlook) and data visualization tools (e.g., Power BI, Tableau).
- Willingness to travel 5-15% domestically/internationally.
- Strategic leadership in accounting/tax projects (e.g., M&A due diligence, tax compliance, local law adherence, post-transaction integration); exceptional project management for process improvements and cross-functional collaboration (FP&A, Treasury, Tax, Legal).
- Strong business acumen: interpreting contracts/tax implications and synthesizing complex data into actionable insights for executives, auditors, and stakeholders.
- Multi-National operations experience, preferred.
- Core competencies: accountability, strategic partnerships, business acumen, ethics/integrity, managing vision/purpose.
Anticipated base salary range: $217,000 - $271,000
The final agreed upon compensation is based on individual education, qualifications, experience, and work location. This position is bonus eligible.
RES offers benefits that are effective first day of employment. These benefits include the following:
- Medical, Dental and Vision
- Health Savings Account with employer contribution
- Flexible Spending Accounts
- 4x pay Basic Life and Voluntary Life
- Short and Long Term Disability
- Accident, Hospital, and Critical Illness
- 401 (k) plan with 6% company match
- 4 weeks Paid Time Off (PTO) and 10 Paid Holidays
- Tuition Reimbursement and Green Car Reimbursement
- Volunteer and Charity Matching
- Paid Parental Leave and Paid Sabbatical Leave
- Employee Referral Bonus
- Employee Discounts and Wellness programs
- Wellness Reimbursement
Physical requirements and environment:
The work environment and physical demands characteristics are representative of those the employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.
Rarely: Climbing, Crouching, Kneeling, Pulling (5-15lbs), Pushing (5-15lbs), Lifting (5-15 lbs), Stooping is required.
Occasionally: Carrying (5-15lbs), Gripping, Handling, Pinching, Walking is required.
Frequently: Standing is required.
Constantly: Reading, Grasping, Hearing, Reaching, Vision, Repetitive Motion, Sitting is required.
Not present in the work environment is vibration.
Rarely exposed to extreme cold, extreme heat, humidity, wet in the working environment.
Occasionally exposed to noise and hazards in the work environment.
We maintain a drug-free workplace. Candidates will be required to pass a pre-employment background investigation and drug test as a condition of employment.
RES is an equal opportunity employer that is committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws.
Apply now
Job expired?Please let RES know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
Apply now
Job expired?Please let RES know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
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About the role
February 27, 2026
Full time
Company
- Denver, Colorado, United States
12+ years of progressive accounting experience, including 5+ years as Controller/Assistant Controller
UTC-07:00