Flexcompute is leading the transformation of engineering simulation with our revolutionary ultra-fast simulation technology. Our flagship products, including the industry-leading Computational Fluid Dynamics (CFD) software Flow360 and electromagnetic simulation software Tidy3D, are reshaping how simulations are conducted across diverse sectors. Founded by visionaries from Stanford and MIT and supported by top-tier venture capital firms, we are a rapidly growing team dedicated to breaking boundaries and challenging the norms of the multi-billion-dollar engineering simulation market. We are looking for a Backend Software Engineer to help us design and implement scalable solutions that meet the growing demands of our advanced EM simulation platform. Contribute to general software development efforts, such as API unification, simulation data management (e.g., Collaborate with EM and infrastructure teams to implement simulation-specific solutions, including enhancements to back-end/scheduler integrations and Python front-end functionality. Improve our task pipelines through an innovative design for a web API in a multi-physical simulation context. Develop and maintain hybrid cloud compute and storage solutions, integrating on-premise HPC systems with modern cloud platforms. Optimize and manage high-performance computing clusters equipped with high-speed interconnects. Bachelor's degree or higher in computer science or computer engineering.



Professional experience developing backend systems using Java, Python, and/or C++ Strong experience with AWS or similar cloud platforms (compute, storage, networking, IAM, infrastructure automation) Expertise in backend service development and web API architecture Hands-on experience with containerization and orchestration (Docker, Kubernetes) Strong Linux systems knowledge and infrastructure troubleshooting skills Experience with infrastructure automation and configuration management (e.g., Terraform, Ansible, or similar tools) Familiarity with monitoring, logging, and observability tooling Understanding of networking fundamentals and backend security best practices Experience integrating cloud platforms with HPC environments or large compute clusters Slurm), distributed compute frameworks, or large-scale data pipelines Example Projects Architect and deploy Kubernetes-based infrastructure to run distributed simulation workloads Design and implement scalable web APIs for simulation job orchestration and data access Build CI/CD pipelines and infrastructure-as-code systems for reproducible deployments Develop hybrid cloud solutions connecting on-prem HPC clusters with AWS compute and storage Implement monitoring and observability systems to track simulation performance and reliability Remote within Spain, on Spanish

working hours
with about six hours of overlap with our Boston team. Learning sponsorship, an AI tools budget and a fitness benefit.

📌 Senior Backend Software Engineer (Ceuta)
🏢 Flexcompute
📍 Ceuta