Specialist, Accounts Receivable

Power Factors is a software and solutions provider leading the next generation of clean energy with Unity, one of the most extensive and widely deployed Renewable Energy Management Suites (REMS) in the market.

With over 300 GW of wind, solar, and energy storage assets managed worldwide across more than 600 customers and 18,000 sites, Power Factors manages 25% of the world's renewable energy data*.

Power Factors' Unity REMS supports the entire energy value chain, from monitoring and controls to market analytics. Through open, data-driven applications, renewable energy stakeholders can collaborate, automate critical processes, and make informed decisions to maximize asset performance and business outcomes.

With deep domain expertise and AI-powered insights delivered at scale, Power Factors helps organizations optimize assets, unlock growth, and make smarter decisions as the world rapidly transitions to clean energy.

Power Factors fights climate change with code.

Outside of China and India.

We are seeking a proactive and hands-on Accounts Receivable Specialist to join our Finance team in Athens. This role offers the opportunity to make a meaningful impact on cash flow, customer relationships, and the overall effectiveness of our accounts receivable function.

You will work in an international, cross-functional environment where ownership, collaboration, and practical problem-solving are essential to success.

• Partner with customers and internal stakeholders to resolve payment and billing disputes promptly, keeping ownership of open items until they are resolved or appropriately escalated.
• Issue accurate and timely customer invoices, including recurring and subscription billing across multiple currencies and legal entities; where required, submit invoices through customer AP portals, address rejections, and resubmit corrected invoices.
• Prepare, process, and track credit memos, rebilling, and billing adjustments, including changes resulting from contract amendments or other mid-term updates.
• Own the collections process for an assigned portfolio: monitor aging and overdue invoices, follow up on payment commitments, manage collection notes and escalations, and prioritize actions based on customer risk, value, and business context.
• Reconcile customer and AR accounts by tracing invoices, payments, credit memos, cash applications, unapplied amounts, and open items across systems to identify and resolve discrepancies.
• Navigate NetSuite, Salesforce, ZoneBilling/the billing platform, and customer portals to investigate issues independently; partner with Finance Systems and IT to correct data problems and reduce recurring manual work.
• Collaborate closely with Commercial Operations, Sales, Legal, Project Management, Revenue Accounting, and other Finance teams to resolve customer, contract, billing, and collection issues.
• Prepare AR aging, collections status, DSO, dispute, and other analyses that go beyond standard system output; support month-end and year-end close activities, including reconciliations and follow-up on aged or unusual balances.
• Support audit requests by providing complete, well-organized documentation and a clear transaction trail.
• Document AR procedures and controls, identify recurring root causes and process gaps, and recommend practical improvements, standardization, and automation.

You enjoy working in a purpose-driven organization and thrive in a fast-changing environment where initiative, judgment, and follow-through matter. You are comfortable managing competing priorities, digging into details when needed, and working constructively across teams to solve problems.

We are looking for someone with the following background and capabilities:

• Bachelor's degree in Accounting, Finance, Business, or a related field; equivalent relevant experience will also be considered.
• 3–5 years of relevant experience in Accounts Receivable, collections, billing, order-to-cash, or a similar finance role.
• Demonstrated experience managing customer collections, payment commitments, billing questions, and disputes with sound business judgment and professional follow-through.
• Experience with an ERP and/or billing system. Familiarity with Salesforce, Netsuite and subscription-billing platforms is an advantage, not a requirement.
• Hands-on and systems-curious: comfortable learning new tools, searching across systems, and investigating data directly to find answers.
• Strong working knowledge of AR accounting, reconciliations, cash application, GL interfaces, and month-end close; familiarity with subscription/SaaS billing and revenue-recognition concepts is an advantage.
• Strong Microsoft Excel skills, including the ability to analyze and reconcile large datasets using lookups, pivot tables, filters, and other practical data tools.
• Excellent written and verbal communication skills in English, with the confidence to work with customers and colleagues across functions, cultures, and time zones.
• Strong organization, attention to detail, and prioritization skills, with the ability to manage multiple open items and deadlines without losing follow-through.
• Curious, solution-oriented, and proactive.

We are an agile software development company, large enough to make an impact and small enough to move quickly within a rapidly growing industry. We are a team of passionate, innovative, and results-driven professionals committed to making the world a better place through technology and clean energy.

By joining Power Factors, you will become part of a collaborative and mission-driven organization dedicated to accelerating the transition to renewable energy. We offer opportunities for growth, learning, and meaningful impact while working alongside talented colleagues around the globe.

Power Factors is an Equal Opportunity Employer committed to fostering a diverse and inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.