To reinforce our internal team based in Esch / Alzette, we are looking for an Infrastructure Architect & Presales Specialist (M/F/X) speaking French and English. Your main responsibilities Work alongside the Sales team to assess client needs and design scalable, secure, and high-performance infrastructure architectures Lead the technical design of solutions involving Nutanix, Red Hat, Cisco, IBM, and hybrid cloud environments Participate in presales activities: customer meetings, technical presentations, and product demonstrations Create comprehensive technical proposals, including solution architecture, migration paths, and cost models Act as a technical advisor, supporting clients through complex infrastructure decisions Ensure architectural consistency and feasibility with post-Sales implementation teams Stay up to date with emerging technologies in HCI, hybrid cloud, and open-source platforms Your profile Minimum 5 years' experience in infrastructure architecture, presales, or technical consulting roles Strong background in servers, Storage, networking, Virtualization, and cloud integration Bachelor's degree in Computer Science, IT, or related field Fluency in both written and spoken French. Knowledge of English is a plus. Expertise in IBM, Nutanix, Red Hat, and Cisco solutions Architecture certifications (e.g. Togaf, Nutanix Ncp/Ncm, Red Hat Certified Architect, IBM Cloud certs) are a plus Excellent communication and presentation skills, with the ability to interact effectively with both technical and business stakeholders Togaf If your application is successful at the end of the recruitment process, you will be required to provide a criminal record extract in accordance with the regulatory requirements related to our PSF status. What NSI can offer you A dynamic and innovative work environment Training opportunities and continuous support Personalized career follow-up with a dedicated point of contact Diverse assignments thanks to a rich and varied client portfolio An attractive salary package aligned with your skills and experience Additional fringe benefits Regular company events to connect, collaborate, and share great moments together The opportunity to join the "NSI family", where human values remain at the heart of our priorities As a signatory of the diversity charter, NSI is committed to equal opportunities. this position is open to all candidates regardless of origin, nationality, gender, age, disability, religion, or sexual orientation. Since 2017, NSI Luxembourg PSF has been operating as a provider of high value-added IT services (Agile application development, ERP, cloud infrastructure, support, AI, etc.) for clients in both the private and public sectors. We offer a flexible approach combining consultancy services and fixed-price projects, enabling us to accurately address each client's specific challenges.