This is a fixed-term position for one year, with the possibility of extension. What you will do You will act as an experienced Booking & Billing professional responsible for booking and billing transactions and ensure that orders, projects, contracts and invoices are processed accurately and in accordance with approved documentation and company policies. You will analyse discrepancies, coordinate corrections and work closely with Sales, Project Management, Service, Finance and other stakeholders. How you will do it Independently process end-to-end Booking and Billing transactions within the assigned scope. Review and reconcile POs, quotations, contracts, approvals and ERP/CRM information. Create, amend and validate orders, projects or contracts and related billing information. Configure approved billing terms, milestones or instalment schedules where applicable. Validate billing readiness, prior billing, remaining values and supporting documentation. Prepare, review, issue and close invoices and credit notes. Analyse and resolve routine to moderately complex transactional discrepancies. Place incomplete transactions on hold, coordinate corrections and revalidate them before completion. Work with Sales, Project Management, Service and specialist functions to resolve issues. Maintain complete documentation and support control, audit and backlog requirements. What we look for Required: Fluency in English and Hungarian language. Secondary education or university degree. Relevant experience in Finance, OTC, order management, billing, contract administration or customer service. Strong analytical and problem-solving skills. Effective time management, in order to meet deadlines. A positive attitude and ability to provide an excellent customer service. Ability to work independently and resolve transactional discrepancies. Strong attention to detail and communication skills. Good MS Office/Excel knowledge. Minimum experience working in an administrative role preferably within Finance or Legal. Preferred: ERP and CRM experience. Experience with Install/Project, L&M or maintenance-contract transactions. Our salary and benefits The initial basic salary for this position will be in the range of €1650 – €2480 per month, plus a 13th month salary applied after your first 6 months in the job. The final package will reflect your experience, skills, and qualifications relevant to the role. We are committed to fair, equitable, and gender-neutral pay practices. At Johnson Controls, your work comes with benefits that support both your career and your wellbeing. Meal vouchers fully covered by the company. Flexible benefits budget with access to 3,500+ options, including a MultiSport card, medical and wellness services. Extra savings through retail and lifestyle discounts (Benefit+). Allowance for the private kindergarten or nursery to support your family. Flexible working hours and home office days. Allowance for language courses, professional development support, and wellbeing support. On site benefits: massages, distribution of fruits, yoga, psychologist, health month, various events with supporting groups (volunteering activities, branding activities). Seniority benefits - extra monthly financial allowance, medical care and support, wellbeing day. Relocation support with housing allowance if moving to Slovakia About Us Johnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education. For more than 140 years, Johnson Controls has delivered performance where it really matters. Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward. We are committed to diversity and inclusion and believe that different perspectives make us stronger. By encouraging open dialogue and valuing individuality, we strive to be one of the most desirable places to work. #LI-DD1 #LI-Hybrid