Flexcompute

Cloud CAE for fluid, thermal, EM

Senior Backend Software Engineer

Backend EngineeringConfirmed live in the last 24 hours

Full-timeRemote in Poland

About the Job

Requirements

A bachelor's degree or higher in computer science or computer engineering is required.
Professional experience developing backend systems using Java, Python, and/or C++.
Strong experience with AWS or similar cloud platforms, including compute, storage, networking, identity and access management, and infrastructure automation.
Expertise in backend service development and web API architecture.
Hands-on experience with containerization and orchestration using Docker and 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 tools such as Terraform or Ansible.
Familiarity with monitoring, logging, and observability tooling.
Understanding of networking fundamentals and backend security best practices.
Ability to learn quickly, adapt to new challenges, and innovate in a fast-paced startup environment.

Responsibilities

Contribute to software development efforts, including API unification, simulation data management such as caching, syncing, and storage, and scripting improvements.
Collaborate with EM and infrastructure teams to implement simulation-specific solutions, including back-end and scheduler integrations and Python front-end functionality.
Improve task pipelines by designing a web API for a multi-physical simulation context.
Develop and maintain hybrid cloud compute and storage solutions integrating on-premise HPC systems with cloud platforms.
Optimize and manage high-performance computing clusters equipped with high-speed interconnects.
Design and build job dispatch and scheduling pipelines to run large simulation workloads across hybrid cloud and on-premise environments.
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.

Desired Qualifications

A postgraduate degree, published research, or a strong record in competitive programming.
Experience integrating cloud platforms with HPC environments or large compute clusters.
Familiarity with distributed task queues and job dispatch, 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.

Senior Backend Software Engineer

Flexcompute Inc. · Poland (Remote) · Full-time · Posted 2026-10-27

Workplace: remote

Department: EM

Description

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.

Role Overview

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 be 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.

Requirements

Education: Bachelor’s degree or higher in computer science or computer engineering. A postgraduate degree, published research, or a strong record in competitive programming is a plus.

Technical Skills:

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 distributed task queues and job dispatch, 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

Design and build the job dispatch and scheduling pipeline that runs large simulation workloads across hybrid cloud and on-premise environments
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

Join Us

By joining Flexcompute, you’ll be at the heart of a movement set to redefine the engineering simulation industry. You will play a key role in shaping the future, where our innovations in simulation technology pave the way for groundbreaking advancements. We are committed to fostering an innovative and collaborative culture where boundaries of possibility are re-imagined, driven by creativity, expertise, and a shared vision of transforming the technological landscape.

Benefits

Competitive compensation with equity of a fast-growing startup. The range for this role is USD 85,000 to 100,000 per year, depending on experience.
Remote within Poland, on Polish 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.

Apply

Apply at Flexcompute Inc.

About the Company

Flexcompute

Cloud CAE for fluid, thermal, EM

Flexcompute offers cloud-based CAE (computer-aided engineering) software that provides proprietary tools for simulating fluid dynamics, thermal analysis, and electromagnetic physics. The platform is delivered as a service, letting engineers run complex simulations in the cloud without needing powerful local hardware, thereby speeding up product design and reducing development costs and risks. Its software-hardware co-design approach enhances the speed and accuracy of simulations, helping manufacturers, semiconductors, and other industries optimize designs efficiently. The company differentiates itself by combining multi-physics simulation capabilities with scalable cloud resources and a focus on making advanced computational analysis accessible to engineers and designers. The goal is to accelerate R&D cycles and enable more reliable, cost-effective hardware development.

Company size: 51-200
Company stage: Late Stage VC
Total funding: $82M
Headquarters: Watertown, MA
Founded: 2016

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