Senior Customs Declarant Specialist

Role Purpose

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We are looking for an experienced Senior Customs Declarant to support the expansion of our B2B customs clearance activities in Liège while also contributing to daily B2C customs operations. This is a senior operational and development role combining hands-on declaration work, customs compliance, customer onboarding, process design, system implementation and business support.

The successful candidate will act as a customs subject-matter expert for complex B2B flows and help build scalable, compliant and commercially viable customs solutions. The role will also provide operational support for high-volume B2C and e-commerce customs activities, including exception handling, data-quality controls and customs response follow-up.

Key Responsibilities

1. B2B Customs Declarations and Compliance

• Prepare, submit and follow up B2B import customs declarations, including H1 declarations and the related amendment, invalidation and presentation processes.
• Handle standard and complex customs procedures, including 40 00, 42 00, returned goods, temporary admission and other relevant import regimes.
• Prepare and manage transit movements, including T1 and T2 declarations through NCTS.
• Validate customs classification, customs value, origin, Incoterms, licences, supporting documents and applicable TARIC measures.
• Ensure compliance with the Union Customs Code, Belgian customs requirements and internal customs-control standards.
• Manage customs duties, import VAT, deferred payment arrangements, customs guarantees and guarantee references.
• Follow up customs releases, documentary controls, physical inspections, blocked declarations and customs-related incidents.
• Prepare amendments, invalidation requests, regularisation files and post-clearance corrections when required.
• Maintain complete and auditable customs records for internal controls, customer reviews and customs audits.

2. B2B Customs Business Development

• Support the development and expansion of the company's B2B customs clearance activities in Belgium and across relevant European flows.
• Analyse new customer flows and determine the most suitable customs procedure, representation model and operational setup.
• Lead or support the customs onboarding of new B2B customers, including the review of EORI and VAT data, powers of attorney, representation agreements, guarantees, deferred payment arrangements, product data and licences.
• Design practical customs solutions for different customer profiles, product categories, origins, destination countries and transport modes.
• Work with commercial, operational, finance, procurement and IT teams to assess the feasibility, risk, cost and implementation requirements of new customs projects.
• Contribute customs expertise during customer meetings, tenders, implementation workshops and solution-design discussions.
• Identify regulatory and operational risks before new B2B flows are launched and propose effective mitigation measures.
• Develop customer-specific customs SOPs, operational requirements, escalation paths and service descriptions.
• Support customs pricing models by identifying declaration costs, guarantee costs, duty and VAT funding requirements, system costs and operational workload.

3. B2C and E-commerce Customs Operations

• Support daily B2C and e-commerce customs operations, including high-volume low-value import flows and H7-related activities where applicable.
• Review and resolve B2C declaration exceptions, customs rejections, data-quality issues and blocked consignments.
• Verify the correct use of IOSS data, VAT information, intrinsic value, transport costs, product descriptions, HS codes and supporting data.
• Follow up customs response messages, release statuses, inspections, controls and operational escalations for B2C consignments.
• Support corrections, invalidations, returns and other post-declaration activities linked to B2C flows.
• Coordinate with warehouse, line-haul, customer-service and IT teams to protect clearance speed and operational continuity.
• Contribute to B2C data-validation rules, exception dashboards and automated risk controls.
• Provide operational backup during peak periods, incidents, new-flow launches or customs-system disruptions.

4. Process and System Development

• Develop, document and continuously improve customs SOPs, work instructions, control points and escalation procedures.
• Translate customs regulations and operational needs into clear business and system requirements.
• Work with IT teams and customs software providers on Belgian IDMS, H1/H7 processes, NCTS, customs response messages and da