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Office Assistant (Fixed-Term)

Join NextEnergy Capital in London as an Office Assistant supporting daily office operations, visitor management, and administrative tasks. This role offers a dynamic environment with 30 days holiday, private pension, and BUPA healthcare benefits. Be part of a team driving the clean energy transition.

Hybrid Full time UTC+00:00 Updated today

Applies on job-boards.eu.greenhouse.io

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The Office Assistant exists to support the effective day-to-day operation of the London office by providing workplace, administrative, and visitor support services. The role helps ensure that office facilities, supplies, and workplace processes are maintained to support employees and business activities.

The role works closely with colleagues across all departments, visitors, suppliers, building management, and workplace service providers. It provides administrative, workplace coordination, and customer service support, acting as a first point of contact for office-related enquiries and contributing to a professional and welcoming office environment.

The role supports operational efficiency, employee experience, and workplace effectiveness by coordinating office activities, maintaining workplace standards, supporting onboarding and office events, and ensuring employees and visitors receive timely and effective support.

Key Responsibilities

  • Support the day-to-day operation of the London office and workplace facilities
  • Maintain meeting rooms, communal areas, and workplace environments to agreed standards
  • Coordinate office supplies, stationery, kitchen consumables, and workplace inventory
  • Process workplace-related invoices and maintain supplier records
  • Manage incoming and outgoing post, courier deliveries, and package distribution
  • Act as the first point of contact for workplace and office-related enquiries
  • Support compliance with workplace procedures, health and safety requirements, and office policies
  • Liaise with building management, contractors, and external suppliers to resolve workplace issues
  • Support the organisation and delivery of office events, meetings, and employee activities
  • Coordinate onboarding arrangements for new employees, including workplace preparation and logistics
  • Welcome visitors and maintain professional reception experience
  • Coordinate visitor registration, building access arrangements, refreshments, and meeting room preparation
  • Provide administrative support, including diary management, meeting scheduling, and room bookings
  • Organise travel arrangements, including flights, accommodation, and ground transportation
  • Maintain workplace records, documentation, and administrative information as required

Skills & Competencies

To be successful in this role, you will demonstrate:

  • Exceptional organisational and time management skills; ability to prioritise and multi-task effectively
  • Excellent written and verbal communication skills
  • High level of discretion, integrity, and professionalism
  • Strong problem-solving skills and proactive approach
  • Attention to detail and accuracy in all work
  • Ability to build relationships and influence at all levels
  • Adaptability and resilience in a dynamic, fast-paced environment
  • Strong judgement and decision-making abilities
  • Passion for our mission 'to generate a more sustainable future by leading the transition to clean energy
  • Our values: be a leader, build trust, be responsible, be innovative and 'bring your alpha'.

Experience & Qualifications

  • Experience in an administrative, office support, workplace, reception, hospitality, or customer service role
  • Knowledge of office administration and workplace coordination activities.
  • Experience supporting internal stakeholders and external visitors in a professional environment.
  • Advanced proficiency in Microsoft Office Suite (Outlook, Word, PowerPoint, Excel); experience with collaboration tools (e.g., Teams, Zoom, SharePoint) is advantageous
  • Demonstrated ability to handle confidential information with integrity
  • Experience coordinating international travel and managing complex schedules
  • The right to work in the UK.

What We Offer

  • A busy role in a supportive team, with plenty of opportunities to learn
  • International scope - we operate in over 8 countries
  • Onsite working - we will need you in the central London (Mayfair) office 5 days a week. Possibility of remote working if needed.
  • 30 days' holiday per year (3 of which are taken during the festive shutdown in December)
  • Private pension
  • BUPA Healthcare for you and qualifying dependents

How to Apply

If you are interested in this opportunity, please follow the link to apply. If you have been shortlisted for the next stage, we will be in contact within 14 days.

By selecting "Apply" or sending us your CV, you indicate you have read and acknowledged NextEnergy Group's Candidate Privacy Notice.

Diversity and Inclusion

Our approach to diversity and inclusion is a natural extension of our values. Our entrepreneurial culture inspires us to try new things, be open to different viewpoints and be bold. Our Group is committed to cultivating and preserving a culture of connectedness that values difference and gives space for individual expression. The collective sum of our individual differences, life experiences, knowledge, innovation, self-expression, and talent and hard work form the bedrock of who we are and who we aspire to be.

We are committed to equal employment and advancement opportunity irrespective of race, color, ancestry, social background, religion, gender, national origin, sexual orientation, age, citizenship, marital status, disability and gender identity.

Pay & benefits

Health insurance Retirement plan Paid time off

Typical pay for similar roles

Estimate
£26,300–37,844 annually
Entry level · United Kingdom · 57 similar jobs

The middle half of pay advertised on Rejobs for this group over the last 24 months. This employer has not stated a salary.

About this role

Posted
21 Oct 2026
Updated
21 Oct 2026
Job type
Full time
Workplace
Hybrid
Sectors
Working hours
UTC+00:00
Experience
Experience in an administrative or office support role

About NextEnergy Capital

Company Overview

Name

NextEnergy Capital

Headquarters

London, W1K, United Kingdom

Founded

2007

Size

Approximately 300 employees (source: linkedin.com).

What They Do

NextEnergy Capital specializes in solar energy infrastructure and complementary technologies, collectively referred to as "Solar+". This includes utility-scale solar photovoltaic projects and energy storage solutions, focusing exclusively on solar energy while planning future expansions into wind and green hydrogen projects through its development arm, Starlight (source: nextenergycapital.com). The company operates through three primary functions: project development via Starlight, investment management through NextEnergy Capital, and operational asset management via WiseEnergy. This diversified service model allows the company to optimize asset performance and capture value across the entire project lifecycle.

Projects & Track Record

NextEnergy Capital has developed an extensive portfolio of solar projects, including the UK's largest operating solar PV plant, Llanwern, with a capacity of 75MWp. The company’s flagship investment vehicle, NextEnergy Solar Fund (NESF), operates 100 solar plants with a total installed capacity of approximately 939MW as of September 2025, showcasing significant growth since its IPO in April 2014 when it raised £86 million (source: nextenergycapital.com). The company has also undertaken substantial acquisitions through its NextPower V ESG fund, including a 248MW solar portfolio in Spain and a 50MW portfolio in Poland, demonstrating active deployment and expansion into international markets.

Recent Developments

In 2024, NextPower V ESG executed multiple significant acquisitions, including a 248MW solar portfolio in Spain and a 50MW portfolio in Poland, marking rapid market execution. The fund achieved a first close at $480 million just six months after its launch in July 2023, reflecting strong investor demand (source: nextenergycapital.com). Additionally, NextEnergy Capital's asset under management reached $4 billion, indicating robust growth and deployment velocity, with NextPower V ESG adding over 360MW of capacity in a 12-week period during 2024.

Working There

NextEnergy Capital employs professionals across various functions, including investment analysis, asset management, project development, finance, and legal compliance. The company has a structured management team, with key leadership roles filled by experienced professionals, indicating a strong organizational framework (source: linkedin.com). The company culture emphasizes a disciplined, evidence-based investment approach, focusing on long-term value creation and partnerships with credit-worthy counterparties. While specific employee benefits are not detailed, the company's prestigious London location and substantial funding suggest competitive compensation packages.

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