Remote Cfd Simulation Engineer Jobs in Sunnyvale, CA

Company Overview
ACS (Allen Control Systems) is a defense technology company building precision robotic systems for the United States and its allies. Founded by two former U.S. Navy electrical engineers with deep experience in robotics and software, ACS brings together AI, computer vision, precision motion, and advanced hardware to solve complex defense challenges across land, air, and maritime environments.

Our flagship product, Bullfrog, is an autonomous precision weapon system that transforms existing weapons into highly accurate counter-drone systems — giving warfighters a scalable, cost-effective response to one of the fastest-growing threats on the modern battlefield. Bullfrog is deployed with U.S. forces, and ACS works with organizations throughout the U.S. military and national security community.

Following a $200 million Series B at a $2.2 billion valuation, ACS is rapidly expanding manufacturing, accelerating Bullfrog deployments, and developing the next generation of autonomous battlefield systems. This is an opportunity to join a proven, fast-moving team and help scale technology with direct, real-world impact on national security.

ACS is headquartered in Austin, Texas, with additional operations in Alexandria, Virginia; Mountain View, California; and Huntsville, Alabama. For more information, visit allencontrolsystems.com.

About The Role

We are looking for a Software Engineer, Platform & Infrastructure to own the build systems, CI/CD pipelines, software-in-the-loop simulation infrastructure, and on-vehicle deployment tooling that our engineering team depends on every day. This is a mid-to-senior-level role for a generalist software engineer with strong fundamentals and practical experience in deployment and integration workflows.

What You’ll Do

• Design, implement, and maintain CI/CD pipelines including unit test execution, code coverage reporting, and automated build checks running on GitHub Actions or equivalent; ensure the pipeline runs reliably on server infrastructure in the background without manual intervention.

• Own and improve the build system and on-vehicle software deployment tooling; maintain CMake-based build configurations and ensure software can be reliably packaged, versioned, and pushed to aircraft in the field.

• Maintain and extend software-in-the-loop simulation infrastructure, enabling engineers to run and validate flight software against simulated environments on remote servers without requiring physical hardware.

• Manage flight log upload, storage, and retrieval pipelines using AWS or equivalent cloud storage; ensure logs from fielded aircraft are reliably captured, organized, and accessible to the engineering team.

What You’ll Need

• Strong general software engineering fundamentals; proficiency in C++ is required and the ability to read and contribute to a C++ codebase is expected from day one.

• Hands-on experience implementing and maintaining CI/CD pipelines; familiarity with GitHub Actions or a comparable CI platform and the ability to configure automated test, build, and deployment workflows.

• Experience with software deployment and integration in embedded or constrained environments; comfort working with CMake-based build systems.

• Ability to work independently and drive tasks to completion without close supervision; comfort operating in a fast-moving environment where requirements and priorities evolve.

You’ll Stand Out

• Experience with AWS or similar cloud infrastructure for data storage, log management, or compute workloads.

• Prior work in aerospace, defense, robotics, or autonomous systems where software runs on physical vehicles or platforms.

• Experience with software-in-the-loop or hardware-in-the-loop simulation infrastructure.

• Familiarity with perception, path planning, or other autonomy subsystems that this infrastructure will eventually need to support.

What We Offer

• Competitive salary

• ACS Equity Package

• Health, Dental, Vision Insurance

• Paid Time Off

Allen Control Systems is an Equal Opportunity Employer, providing equal employment opportunities to all employees and applicants for employment. Allen Control Systems prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. #LI-AS1

Compensation Range: $140K - $230K