[Hiring] Senior Backend Software Engineer @Flexcompute Inc.

Role Description

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.

The ideal candidate has expertise in high-performance computing (HPC), infrastructure, web API design, and systems design. Additionally, the candidate will help us enhance our data management, frontend-backend API unification, and cloud integration.

Key Responsibilities

• Contribute to general software development efforts, such as API unification, simulation data management (e.g., caching, syncing, storage), and scripting improvements.
• 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.

Qualifications

• Bachelor’s degree or higher in computer science or computer engineering.

Requirements

• 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).
• Experience designing and operating distributed systems in production environments.
• 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.
• Innovative Mindset: Ability to learn quickly, adapt to new challenges, and innovate in a fast-paced startup environment.

Bonus Skills

• Experience integrating cloud platforms with HPC environments or large compute clusters.
• Familiarity with job schedulers (e.g., Slurm), distributed compute frameworks, or large-scale data pipelines.
• Experience supporting scientific computing or simulation platforms.
• Knowledge of GPU infrastructure and resource scheduling.
• Experience building developer platforms or internal infrastructure tooling.

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.
• Improve platform scalability to support growing user traffic and compute demand.
• Design secure service architectures, authentication, and licensing systems.
• Optimize infrastructure utilization across CPU and GPU resources.

Benefits

• Competitive compensation with equity of a fast-growing startup.
• Remote within Spain, on Spanish working hours with about six hours of overlap with our Boston team.
• Annual travel support for team gatherings in Boston.
• Learning sponsorship, an AI tools budget and a fitness benefit.
• Friendly, thoughtful, and intelligent coworkers.