Finance Assistant, Arenko Group
£32-40k
1+ day a week in office
Automation & optimisation for the energy transition
Posted today
Automation & optimisation for the energy transition
21-100 employees
Posted today
£32-40k
1+ day a week in office
21-100 employees
Company mission
To save the planet by enabling a zero carbon grid world wide.
Role
Who you are
- The ideal candidate will have a solid foundation in accounting principles, proven experience with financial record-keeping, and a proactive approach to supporting the daily operations of the finance team
- Education: Bachelor’s degree in Finance, Accounting, Business Administration, or actively enrolled onto AAT/ACCA/CIMA
- Experience: 2+ years of proven experience in a finance or accounting support role, such as Finance Assistant, Bookkeeper, or Accounts Payable/Receivable Clerk
- Proficiency with Microsoft Excel (e.g., VLOOKUPs, Pivot Tables) is mandatory
- Demonstrated experience with accounting software (e.g., Access Financials, GP Dynamics, SAP, Oracle, Xero)
- Strong problem-solving skills and a proactive, self-starter attitude
- High attention to detail and accuracy in data entry and calculations
- Strong organisational and time-management skills with the ability to manage multiple tasks and meet tight deadlines
- Excellent written and verbal communication skills
- Ability to handle confidential information with discretion and integrity
Desirable
- Experience in a startup / scale-up work environment
- Working within Technology or Energy industry
- Experience within a hands on finance team
What the job involves
- We are seeking a highly organised, detail-oriented, and experienced Finance Assistant to join our growing finance department
- This role is critical in ensuring the accuracy and efficiency of our financial processes
- Accounts Payable & Receivable: Process, verify, and reconcile invoices, ensuring accurate GL coding and timely payments to vendors
- Prepare and issue invoices to customers and track outstanding receivables
- Bank reconciliation: Perform reconciliation of the company bank accounts and credit cards
- Bookkeeping & Record Keeping: Maintain accurate and up-to-date financial records, including journals, ledgers, and other accounting documentation
- Perform daily data entry and reconciliation of bank and credit card statements
- Expense Management: Review and process employee expense reports, ensuring adherence to company policies and proper documentation
- Reporting Support: Assist management accountant in the preparation of monthly financial reports, including balance sheets, income statements, and budget vs. actual analyses
- Ad-Hoc Tasks: Provide administrative and clerical support to the finance team
Application process
- Job searching is tough so, unlike some organisations, we don’t require you to spend hours on a tailored application with a cover letter to match right now
- If we like the look of your CV, we’ll reach out and may ask you to complete a task to progress to the next stage of the process
- Think you're a good fit? Send us your CV - we’ll let you know our transparent hiring process from the moment you apply
- 1st Stage: 30 minute recruiter interview
- 2nd Stage: 1 hour intro call with the Hiring Manager
- 3rd Stage: 1 hour technical interview with Hiring Manager + CFO
Salary benchmarks
Our take
In 2020, renewable energy was the only energy source for which demand increased and it is expected that renewables will account for 90% of capacity increases over the next two years. Arenko Group aims to modernise the infrastructure that ensures this capacity can be optimised.
The company provides software solutions that allow energy operators to increase their grids' flexibility and secure their energy supply more efficiently. Through their AI-powered software system, Arenko supports battery asset owners and operators to optimise their energy storage by allowing them to automatically buy and sell electricity on the grid ensuring they maximise revenue across multiple power and energy markets at the same time.
Arenko currently works with the battery and grid operators across the UK and are part of the National Grid ESO’s Technology Advisory Council, along with the likes of Transport for London and Octopus Energy. With a focus on creating a faster path to net zero and a more resilient energy grid, Arenko aims to become a global leader in this space.
Steph
Company Specialist at Welcome to the Jungle
Insights
14% employee growth in 12 months
Company
Employee endorsements
Opportunities to learn
"Perhaps more relevant to the Data Science team, where there is always more to learn: a heavy focus on individual goals, upgrading skills and..."
Funding (1 round)
May 2025
$12.2m
GROWTH EQUITY VC
Total funding: $12.2m
Company benefits
- A genuine approach to flexible working - the vast majority of our employees spend at least a day or 2 each week in the office but we’re open to making this work for everyone, their personal circumstances and their workloads
- Enhanced parental leave offerings with 6 months of full salary for the primary caregiver and 1 month for the secondary caregiver
- A discretionary bonus scheme
- A yearly salary review for all employees
- We are proud to support the continuous professional growth of our employees by providing a personal annual learning and development budget and fully covering the costs of professional membership fees and subscriptions relevant to your role
- Access to MindTools on us
- Bike to Work Scheme (because it wouldn’t be very on brand if we didn’t encourage you to think about how your travel affects the environment)
- Octopus EV Scheme (see above!)
- A commitment to your wellbeing, with access to our Employee Assistance Programme and Yourcare via Vivup.
- Internal working groups to focus on the things that matter to you like our “Women of Arenko”, “Diversity, Equity and Inclusion” and “Parents of Arenko” groups
- Regular opportunities to blow off some steam engage with our team, including monthly socials, the Winter Party and the Summer Party. We also update our annual wellbeing calendar annually with events to support you physically, socially, mentally and financially
- Weekly snacks and beverages in the office, creating the perfect opportunity to connect with your team while savoring delicious treats
Company values
- Innovation - We empower our people by creating a safe space to take risks
- Ambition - We celebrate collective successes while recognising individual contributions
- Sustainability - We focus on delivering the three pillars of our sustainability strategy (net-zero, people & financial)
- Integrity - We take accountability for our decisions and foster a no-blame culture
- Open & Inclusive - We nurture an inclusive environment by enabling diverse processes/opinion
Company HQ
Temple, London, UK
Articles
Leadership
Rupert Newland
(Chief Executive Officer and Board Member)Prior to creating Arenko, Rupert spent seven years in corporate finance, funding and advising renewables and technology businesses and projects.
Roger Hollies
(Chief Technology Officer)Roger joined Arenko in 2015 to solve what he sees as one of the greatest challenges facing humanity today: The rapid development of sustainable energy systems.
Mike Richardson
(Chief Operating Officer)Mike joined Arenko in 2016 and delivered one of the first commercially operating grid-scale battery energy storage systems in the UK.
Eddie Siow
(Chief Financial Officer)Eddie brings over 18 years’ experience working in a variety of senior and board roles in the energy and financial sectors, with an established track record in operational and corporate finance.
People progressing
Alex began her journey as an Accounts Assistant, and became the Assistant Management Accountant within the Finance team. In 2024, she was promoted to Management Accountant.
Peter joined Arenko as a Backend Software Engineer. Within two years, he was promoted to Senior SE, and four months later, he advanced to Software Team Lead, where he now leads a team of engineers.
Margot joined Arenko as a Senior Data Analyst and, in just two years, has risen to lead the data analytics team as the Analytics Lead.
Diversity, Equity & Inclusion at Arenko Group
Deborah Yisa (Office Manager )
- Adapting our recruitment practices to ensure it is a more diverse and inclusive process. Our hiring process and job postings have been designed to reduce biases and encourage a variety of people to apply
- We offer employees the ability to swap bank holidays for days of celebration that are important to them
- We have multiple Mental Health First Aiders and provide employees with the opportunity to have this training. We provide mental health support via mental health days, Wellbeing Wednesdays, our Employee Assistance Program and other wellness initiatives to support team members
- We are signatory for MotherBoard committing to and achieving change to improve the working lives of mums and women within businesses
- We offer enhanced parental leave offerings with 6 months of full salary for the primary caregiver and 1 month for the secondary caregiver
- We also realise that we can always improve and ask the team if they have any ideas or suggestions to improve out cultures. We'd love to hear about any ideas you have!
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