Presales Engineer

For over a decade now, OpenNebula Systems has been building the open source technology that helps organizations around the world to manage their corporate data centers and build Enterprise Clouds with unique, innovative features. If you want to join an established leader in the cloud infrastructure industry and the global open source community, keep reading, because you can now join exceptionally passionate, talented colleagues, and help the world’s leading enterprises implement their next-generation edge and cloud strategies. We are hiring Born back in the day as an open source platform for Private Clouds, OpenNebula is a powerful, but easy-to-use, open source Cloud & Edge Computing Platform whose community includes nowadays leading companies and public agencies in a wide range of industry niches and countries. Since 2019, and thanks to the support from the European Commission, OpenNebula Systems is leading the edge computing innovation in Europe, investing heavily in research and development, and playing a key role in the key strategic initiatives of the European Union. https://opennebula.io/innovation/ We’re building an awesome engineering-first culture with an Open Source blueprint which promotes Creativity, Innovation, Collaboration, Open Communication and Iterative Work, and we’re currently looking for an Account Executive to come join us in our distributed, fully-remote, international team. Job Description We are looking for a Presales Engineer to support the sales cycle from a technical perspective, working closely with Technical Sales Engineers and the Sales team. This role focuses on technical execution and support during presales activities, including demos, evaluations, PoCs, and RFP responses. The Presales Engineer helps ensure that proposed solutions are technically sound, reproducible, and aligned with OpenNebula’s product capabilities. This position is ideal for someone with a strong technical background in cloud infrastructure who enjoys hands‑on work, structured problem‑solving, and collaborating closely with engineering and sales teams, without owning the full customer relationship. Responsibilities Support presales engagements by preparing and executing technical demonstrations, use cases, and solution validations. Contribute detailed technical input to RFQs, RFPs, and RFIs under the guidance of the Account Executive. Participate in technical discovery sessions to understand customer infrastructure, requirements, and constraints. Set up, execute, and document Proofs of Concept (PoCs) and technical evaluations, ensuring repeatability and clarity of results. Validate solution feasibility and identify technical risks, limitations, or dependencies early in the sales cycle. Collaborate closely with Product and Engineering teams to clarify requirements, validate configurations, and reproduce technical issues when needed. Maintain and improve technical documentation related to presales environments, demos, PoCs, and reference setups. Stay current with OpenNebula releases, features, roadmap direction, and relevant open‑source and infrastructure ecosystem developments. Experience required Academic Background and Certifications Bachelor’s/Master’s degree in computer science, information technology, or engineering Professional Experience 2+ years of experience in a Presales Engineer, Systems Engineer, or similar technical role Solid background in IT/cloud infrastructure environments Experience supporting PoCs, demos, or technical evaluations Exposure to customer‑facing technical interactions is a plus Technical Experience Linux administration: RHEL/AlmaLinux, Ubuntu/Debian Experience using virtualization technologies such as, KVM, LXC, libvirt/QEMU and/or VMware Ability to document technical setups and configurations clearly Experience working with other cloud management platforms is strongly preferred Experience in AI from an IaaS perspective in relation to use cases, GPUs, etc would be very advantageous Language Skills English fluency at a professional level Soft Skills & Collaboration Strong customer service mindset, with a focus on responsiveness and user satisfaction. Clear and structured communication Self‑management and accountability with ability to work independently, manage time, and ability to follow defined processes and deliver predictable outcomes Technical autonomy and tool proficiency with confidence in using Git, CI/CD, remote collaboration tools (Slack, Zoom, GitHub, etc.), and solving problems without direct supervision What’s in it for me? Some of our benefits and perks vary depending on location and employment type, but we are proud to provide employees with the following; Competitive compensation package and Flexible Remuneration Options: Meals, Transport, Nursery/Childcare… Company‑provided workstation Private Health Insurance 6 hours workday on Fridays and everyday during August PTO: Holidays, Personal Time, Sick Time, Parental leave. All Remote company with bright HQ centrally located in Madrid, and offices in Boston (USA) and Brno (Czech Republic) Healthy Work-Life Balance : We encourage the right for Digital Disconnecting and promote harmony between employees personal and professional lives Flexible hiring options: Full Time/Part Time, Employee (Spain/Usa) / Contractor (other locations) We are building an awesome, Engineering First Culture and your opinion matters: Thrive in the high-energy environment of a young company where openness, collaboration, risk-taking, and continuous growth are valued Be exposed to a broad technology ecosystem. We encourage learning and researching new technologies and methods as part of your everyday duties #J-18808-Ljbffr