Accounts Payable Specialist

Harmattan AI; Paris; On-site; EUR 42,000 - 64,000; Full time

Job summary

Harmattan AI is seeking an Accounts Payable Specialist to own the supplier-to-payment cycle across its entities. You will strengthen controls, optimize processes, and partner with Finance, Procurement, and cost center managers as volumes grow.

Responsibilities include invoice processing, three-way matching, SEPA and international payments, and driving AP automation while ensuring French accounting compliance and audit readiness.

Qualifications

• 2 to 4 years of accounts payable experience in industrial or high-growth environments.
• Full AP cycle knowledge: invoicing, matching, payments, reconciliations.
• Strong knowledge of French accounting rules and VAT; intra-EU and import transactions.
• Experience with multi-entity and multi-currency accounting is a plus.
• Proficient in ERP systems and advanced Excel; AP automation familiarity.
• Rigor, accuracy, and strong internal controls.
• Fluent French and professional English.

Responsibilities

• Own the full supplier-to-payment cycle from invoice receipt to payment.
• Perform three-way matching and resolve mismatches with Procurement and Operations.
• Prepare and validate SEPA and international payment runs.
• Reconcile supplier accounts and investigate discrepancies.
• Respond to supplier payment queries and verify bank details.
• Improve invoice capture, approvals, workflows, and reporting; drive AP automation.
• Maintain internal controls and fraud prevention in AP processes.
• Document records and procedures for audits and French accounting compliance.

Skills

AP process

Invoice processing

Excel advanced

Multi-currency accounting

Internal controls

Stakeholder collaboration

English proficiency

French proficiency

Tools

ERP system

AP automation tools

Job description

About Us

Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces.

Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and execution are expected.

About the Role

As Accounts Payable Specialist, you own the supplier-to-payment cycle for Harmattan AI's entities. You will build and improve AP processes rather than just run them. Working closely with Finance, Procurement and cost center managers, you keep supplier payments reliable and controls strong as the company's volumes and entities grow.

Responsibilities

• Own the full supplier-to-payment cycle, from invoice receipt and coding to approval and payment.

• Perform three-way matching and resolve mismatches with Procurement and Operations.

• Prepare and validate payment runs (SEPA and international) in line with due dates and cash planning.

• Reconcile supplier accounts and investigate discrepancies or unallocated payments.

• Answer supplier queries on payment status and disputes, verifying bank detail changes before any update.

• Improve invoice capture, approval workflows and reporting, and drive AP automation.

• Strengthen internal controls and fraud prevention across the AP process.

• Keep AP records and procedures documented to support audits and French accounting compliance.

Candidate Requirements

• 2 to 4 years of experience in accounts payable, ideally in an industrial or high-growth environment.

• Solid command of the full AP cycle, including invoice processing, matching, payment runs and supplier reconciliations.

• Good knowledge of French accounting rules and VAT, including intra-EU and import transactions.

• Proficiency with an ERP or accounting system; advanced Excel and familiarity with AP automation tools are a plus.

• Experience with multi-entity and multi-currency accounting is a plus.

• Rigor and accuracy, with a strong sense of internal control and organization under tight deadlines.

• Autonomy and a process mindset: you spot inefficiencies, document procedures and propose improvements.

• Collaborative, service-oriented approach with buyers, cost center managers and suppliers.

• Fluent French and professional English.

We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.