C++ Developer - High Performance | MARGO Software Engineering

About Mistral AIAt Mistral AI, we harness the transformative power of artificial intelligence to simplify processes, save time, and foster creativity and learning. Our innovative technology is crafted to seamlessly integrate into everyday workflows.We are committed to democratizing AI through our cutting-edge, optimized, and open-source models, products, and solutions. Our extensive AI platform is tailored to meet the needs of enterprises, whether on-premises or in cloud infrastructures. Our offerings include 'le Chat', the AI assistant designed for both personal and professional use.We are a vibrant, collaborative team driven by our passion for AI and its potential to revolutionize society. Our diverse workforce thrives in competitive settings and is dedicated to fostering innovation. Our teams are spread across France, the USA, the UK, Germany, and Singapore, and we pride ourselves on being creative, humble, and team-oriented.Join us to shape the future of AI and make a meaningful difference. Discover more about our culture at https://mistral.ai/careers.

About Mistral AI Mistral AI builds high-performance, open, and efficient AI systems designed for the next wave of applications. The team develops and operates advanced infrastructure that connects large-scale distributed systems, cloud platforms, and high-performance computing (HPC) environments. This backbone supports both research and production workloads at scale. The company values collaboration and a low-ego approach, bringing together skilled professionals across Europe, the United States, and other regions. As Mistral AI grows, the team is establishing core infrastructure to support thousands of nodes and systems handling petabytes of data. Learn more about the team and company culture at https://mistral.ai/careers.

Join our dynamic team at iliad-free as a Network Performance Engineer in Paris. In this pivotal role, you will be responsible for optimizing and enhancing the performance of our core network infrastructure. You will work closely with cross-functional teams to ensure the highest standards of network efficiency and reliability.

Join iliad-free as a Network Performance Engineer in Paris, where your expertise will drive the optimization of our network performance. In this dynamic role, you'll analyze network traffic, troubleshoot issues, and develop solutions to enhance overall performance. Collaborate with cross-functional teams to implement best practices and innovative technologies to ensure our network exceeds customer expectations.

Join Squarepoint Capital as a Quantitative Developer specializing in High Performance Computing with expertise in Python. In this pivotal role, you will contribute to the development and optimization of advanced quantitative models, leveraging your technical skills to enhance performance in a fast-paced environment. Your work will directly influence trading strategies and investment decisions, making a significant impact on the firm's success.

Join our dynamic team at iliad-free as an End-to-End Network Performance Engineer specializing in NetDevOps. In this pivotal role, you will be responsible for ensuring optimal performance across our network systems. Collaborate with cross-functional teams to implement innovative solutions, enhance system efficiencies, and drive continuous improvement initiatives.We are looking for a passionate engineer who thrives in a fast-paced environment and is eager to tackle complex challenges head-on. If you possess a strong analytical mindset and a commitment to excellence, we want to hear from you!

Join evoriel as a Network Performance Manager, where you will play a crucial role in optimizing our client relations and enhancing network efficiency. In this dynamic position, you'll leverage your expertise to analyze performance metrics and implement strategies that drive exceptional results.

Join our innovative team at Scaleway as a Software Engineer focusing on Network Products Core. In this role, you will develop and enhance cutting-edge network solutions that empower our cloud infrastructure. You will collaborate with cross-functional teams to design, implement, and optimize network functionalities, ensuring high availability and performance.

Join our cutting-edge team at iliad-free as a Network Core Systems Engineer in Paris. We are looking for a talented and motivated individual to help us design, implement, and optimize our core network systems. As part of our dynamic Réseaux & Telecom department, you will play a crucial role in ensuring the reliability and performance of our network infrastructure.

Join Scaleway, a pioneering cloud service provider, as a Software Engineer - Compute. In this dynamic role, you will collaborate with a talented team to design, develop, and maintain cutting-edge computing solutions that empower our global customer base. Your expertise will contribute to innovative projects that push the boundaries of technology and enhance our offerings.

Join Segula Technologies as a High Voltage Engineer and contribute to pioneering projects in the electrical engineering sector. In this role, you will be responsible for designing and implementing high voltage systems, ensuring safety and compliance with industry standards. This is an exciting opportunity to work in a dynamic environment where innovation and creativity are encouraged.

Scaleway has provided secure and sustainable infrastructure since 1999. The company began with dedicated servers under the Dedibox brand, then expanded into cloud computing in 2015. Today, Scaleway is recognized as a European cloud provider. With support from the Iliad Group and €3 billion invested in building a sovereign AI alternative, Scaleway is positioned to address growing needs in artificial intelligence. The company’s work is shaped by three core values: simplicity, flexibility, and technical expertise. Scaleway serves a broad range of clients, including large enterprises like France Télévisions and Hachette Livre, startups such as Photoroom and Biolevate, and public organizations including the City of Copenhagen. Location This Software Engineer position is based in Paris. Scaleway also maintains offices in Lille, Toulouse, Rennes, Rouen, Bordeaux, and Lyon.

Join our dynamic team at iliad-free as a NetSysOps Engineer in Paris. In this role, you'll play a crucial part in optimizing and maintaining our network systems, ensuring seamless operations and enhanced performance. You will collaborate with cross-functional teams to implement innovative solutions and improve system reliability.

Join our dynamic team at Scaleway as a Software Engineer specializing in Symfony! In this role, you will be responsible for developing and maintaining robust web applications using the Symfony framework. Collaborate with cross-functional teams to design, develop, and implement new features while ensuring optimal performance and security.

Alice & Bob is pioneering the development of the world's first universal, fault-tolerant quantum computer to tackle the most challenging problems that humanity faces.Our vision revolves around creating a revolutionary superconducting qubit known as the Schrödinger cat qubit, which stands out in the realm of superconducting platforms by its remarkable capacity to autonomously implement quantum error correction!As a leader in the quantum race, we are in direct competition with industry giants like Google and IBM, and our growth trajectory is accelerating, thanks to securing €100 million in funding in 2025 for advancing our groundbreaking technology.Currently, we boast a diverse team of over 100 professionals including physicists, PhD candidates, engineers, and seasoned business experts, all united in our ambitious mission to redefine the future of quantum computing.About the Team:The Framework Team serves as a vital resource, collaborating across the organization with researchers and technicians, and is fundamentally woven into our operational workflows. As a Senior Software Engineer within this team, you will be instrumental in designing, developing, and maintaining top-tier software solutions. Your contributions will enhance our core products and foster innovation as you help build our proprietary software that governs hardware and the experiments we conduct. You will also take on a technical leadership role, mentoring junior engineers and influencing architectural decisions.About the Role:You will lead the definition of our service and platform architecture designed to enable agility, evolution, and scalability of our quantum computing stack. Your primary objective is to create a cohesive, maintainable, and future-proof platform that underpins experimental workflows, automation, logical systems, and ultimately facilitates the delivery of a QPU-as-a-product for high-performance computing or cloud users.Your role will be pivotal in bridging scientific R&D, data engineering, and production-grade platform design, allowing researchers and physicists to iterate swiftly without sacrificing reliability.

Role overview Scaleway is looking for a Site Reliability Engineer (SRE) focused on Compute services in Paris. This role centers on maintaining the reliability, performance, and scalability of our cloud infrastructure. The SRE will play a key part in supporting our customers and improving how we run and operate our systems.

Alice & Bob is pioneering the development of the world's first universal, fault-tolerant quantum computer, aimed at tackling some of the most complex challenges facing humanity.Our vision revolves around the innovative Schrödinger cat qubit—a groundbreaking superconducting qubit capable of autonomous quantum error correction, setting it apart from existing superconducting technologies.In the race against industry giants like Google and IBM, we are rapidly expanding, having secured €100 million in funding in 2025 to further advance our unique quantum technology.With a diverse team of over 100 professionals, including physicists, PhD researchers, engineers, and business experts, we are united in our mission to transform the future of computing. Are you ready to be a quantum trailblazer? Join us in our quest to redefine what’s possible!About the Role:The Performance Optimization Team combines the expertise of physicists and machine learning engineers to enhance the quality, speed, and reliability of the quantum chip lifecycle, from design to effective error correction.As a Senior Software Engineer at Alice & Bob, you will act as the architectural anchor for our team, developing the robust software ecosystem essential for scaling quantum innovations from initial concepts to mission-critical production systems.Your contributions will significantly impact the organization; you will elevate engineering standards by creating scalable frameworks, implementing strict best practices, and acting as the primary connection between our research-focused initiatives and the wider software engineering team. In this role, you are not just coding—you are building the foundational systems that will shape the future of fault-tolerant quantum computing.

Join our dynamic team at iliad-free as a Network Maintenance Technician in Paris! In this role, you will be responsible for ensuring the optimal performance and reliability of our network systems. You will troubleshoot and resolve network issues, perform regular maintenance, and collaborate with our engineering team to implement improvements. If you are passionate about technology and eager to contribute to innovative solutions, we want to hear from you!

Join us and thrive Network Security Engineer H/F CAPFI is a human-sized IT services company guided by genuine technological expertise and a strong culture of innovation. We offer a stimulating work environment, characterized by a variety of assignments and a human-centric approach. Trust, listening, and support are the core values of our Group, benefiting all employees. Our mission? To allow you to experience a collaborative journey that reflects your aspirations, enabling you to choose your professional trajectory, learning pace, and create the conditions necessary for your fulfillment. We believe that the diversity of profiles enriches our expertise; thus, we handle all applications equally, focusing solely on candidates' skills, irrespective of their origin, age, gender identity, disability, or religion. You are the right candidate if: You hold a Master’s degree and have at least 3 years of experience You specialize in IT Security technologies You recognize that IT Security is crucial today You are meticulous, passionate, curious, and persistent You possess a strong proficiency in English Your missions: As a Network Security Engineer, you will join a team of IT Security specialists at our clients' sites, working on topics such as: Internet access management Implementation of remote access solutions (VPN...) Securing perimeter access (Firewall, Proxy, Reverse Proxy, Load balancing, IDS/IPS, DLP, NAC, WAF...) Securing end-user devices (AV, EDR, HIDS, Micro-segmentation...) Mastery and understanding of cryptographic systems Technological watch Implementation of secure architectures Establishing security monitoring Patch management Validation of new solutions through POC Infrastructure migration