Buyer renewable energy parts and operations and maintenance
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 Feb 23, 2026 | 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 Buyer is a critical operational role within the Supply Chain function, responsible for sourcing, procuring, and expediting spare parts and consumables across the company's portfolio of onshore wind, solar PV, and BESS (Battery Energy Storage System) plants. The Buyer ensures plant uptime is protected through the timely availability of parts and materials, while driving cost efficiency and supplier performance. This role also supports O&M procurement activities and manages all aspects of the purchase order lifecycle within the company's ERP system.
This role will be hybrid requiring a minimum of 3 days in office.
Requirements
Spare Parts & O&M Procurement
- Source and procure spare parts, consumables, and O&M materials for onshore wind, solar, and BESS assets across the US portfolio.
- Evaluate technical specifications from operations and maintenance teams to identify correct parts, cross-references, and alternatives.
- Develop and maintain a preferred supplier base for critical components including inverters, transformers, blades, batteries, and BOS equipment.
Purchase Requisition & PO Management
- Review, validate, and process purchase requisitions raised in the ERP system in a timely and accurate manner.
- Create and issue Purchase Orders (POs) in accordance with company procurement policy, approval authorities, and budget controls.
- Ensure all POs contain correct pricing, lead times, delivery terms, and technical requirements prior to release.
- Maintain open PO logs and communicate status updates to internal stakeholders proactively.
Pricing Database Management
- Build and maintain a centralized pricing database for frequently purchased spare parts and materials.
- Conduct regular market benchmarking to ensure pricing competitiveness and identify cost-saving opportunities.
- Track price trends across key commodity categories (copper, steel, semiconductors, etc.) relevant to renewable assets.
Vendor Management & Creation
- Onboard new suppliers by managing the vendor creation process end-to-end within the ERP system.
- Collect and verify all required vendor documentation including W-9, insurance certificates, and banking details.
- Conduct basic vendor qualification assessments and support ongoing supplier performance monitoring.
- Maintain accurate and up-to-date vendor master data within the ERP system.
Expediting
- Proactively manage delivery timelines for critical and time-sensitive orders to ensure on-time delivery to project sites.
- Liaise directly with suppliers to obtain shipping confirmations, tracking details, and resolution of delays.
- Maintain an expediting log and provide regular status reports on critical open orders.
Goods Receipt & Inventory
- Coordinate goods receipt of spare parts and materials in the ERP system, ensuring accurate recording of quantities, condition, and location.
- Flag non-conforming goods and initiate supplier return or claims processes as appropriate.
Overseas Shipping Coordination
- Manage international procurement activities including coordination with freight forwarders, customs brokers, and overseas suppliers.
- Ensure compliance with US import regulations, HTS classification, and any applicable trade compliance requirements.
- Oversee and track shipments from origin to US delivery point, managing documentation requirements (commercial invoices, packing lists, BOL, COOs).
- Identify and resolve customs holds, delays, or documentation issues to minimize impact on project schedules.
- Evaluate shipping modes (air vs. sea vs. road) based on urgency and cost trade-offs.
- Attends work regularly and punctually, as scheduled or expected.
- Complies with Employee Handbook, Code of Conduct and Company Policies & Procedures.
Additional Responsibilities
- Support the annual budget process by providing pricing inputs for spares and consumables forecasting.
- Escalate supply risks to the Supply Chain Manager and relevant Operations stakeholders in a timely manner.
- Work with site and warehouse teams to resolve any discrepancies between POs and physical deliveries.
- Support cycle count and stock reconciliation activities as required.
- Support Accounting with invoice discrepancies, variances and supplier claims.
- Presents, supports, and leads-by-example with a safety and quality-oriented attitude.
Qualifications
- CPSM, CSCP, or equivalent supply chain certification, or progress toward same required.
- 2 or more years of purchasing or procurement experience, ideally within energy, industrial, or engineering services required.
- 1 or more years of experience supporting field operations or maintenance teams with procurement activities preferred.
- 1 or more years experience in renewable energy - wind, solar, or BESS - related capital asset-intensive industries preferred.
- Ability to travel domestically 5 to 15% required.
- Hands-on experience with ERP systems (SAP, Oracle, IFS) for PO processing and vendor management.
- Proven ability to manage multiple open orders simultaneously in a fast-paced operational environment.
- Experience with international shipping, freight coordination, and import documentation.
- Strong numerical and analytical skills with proficiency in Microsoft Excel.
- High attention to detail and accuracy in data entry and document management.
- Knowledge of Incoterms and international trade compliance fundamentals.
- Familiarity with spare parts management for OEM equipment (e.g., Vestas, GE, Siemens Gamesa, SMA, ABB).
Anticipated base salary range: $70,000 - $88,000
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/pushing/lifting between 5-15lbs., and stooping are required.
Occasionally: Carrying 5-15lbs., gripping, handling, pinching, and walking are required.
Frequently: Standing is required.
Constantly: Reading, grasping, hearing, reaching, vision, repetitive motion, and sitting is required.
Rarely exposed to extreme cold, heat, and humidity, and wet climates, 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.
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Job expired?Please let RES know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
Apply now
Job expired?Please let RES know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
June 12, 2026
Full time
Company
- Houston, Texas, United States
2+ years of purchasing or procurement experience required
UTC-05:00