Backend Software Engineer Jobs in California (NOW HIRING)

Hadrian - Manufacturing the Future

Hadrian is building autonomous factories that help aerospace and defense companies manufacture rockets, satellites, jets, and ships up to 10x faster and up to 2x cheaper. By combining advanced software, robotics, and full-stack manufacturing, we are reinventing how America produces its most critical parts.

We’re accelerating our mission with the launch of Factory 3 in Mesa, Arizona, a 290,000-square-foot facility creating 350 new jobs. We are expanding rapidly to support thousands of future hires, launching Hadrian Maritime to expand into naval production, and introducing a Factory-as-a-Service model that delivers complete systems instead of individual parts.

Hadrian is backed by leading investors including T. Rowe Price, Lux Capital, Founders Fund, and Andreessen Horowitz, our fast-growing team is united around reindustrializing American manufacturing for the 21st century and beyond.

The Role

Candidates for this role could end up working with several of our internal products and teams:

Flow is Hadrian’s FactoryOS, our core platform comprised of applications that model, manage, and automate an extremely complex network of factories.

Copilot is our suite of manufacturing automation products that automates or accelerates key processes within the factory including quoting, CAM programming, and CMM programming.

Factory Automation develops robotic cells for use in our factories and the software that controls them.

We have a broad set of backend services and applications internally. Candidates interested in redefining manufacturing software—from distributed systems to automation infrastructure—will have ample opportunity to do so.

What You’ll Do

• Scope, architect, implement, and deploy critical backend services across multiple product verticals.

• Design and maintain reliable, scalable, and high-performance APIs and systems in a complex production environment.

• Engage in product discovery alongside experts in manufacturing and software—help define what needs to exist and what needs to be better.

• Build alongside an incredible team of engineers and operators.

What We’re Looking For

• Expertise in modern backend technologies, with a deep understanding of distributed systems, service architecture, data modeling, and scalable infrastructure design.

• Strong ability and desire to write high-quality, maintainable code.

• Experience designing and implementing APIs (REST & gRPC).

• Know how to develop, deploy, and maintain backend and full-stack applications using a modern cloud or containerized stack.

• Bias toward action and take pride in your work.

• Excited to work in a fast-paced environment with high stakes and quick iteration cycles.

What Will Set You Apart

• Strong product intuition and user empathy. You enjoy understanding how your services impact real operators and workflows.

• Experience working across multiple languages or systems as needed: Go, Python, C#, C++, etc.

• Background with systems that require high performance, reliability, or real-time processing.

• Familiarity with CAD/CAM software, robotics, automation, manufacturing systems, or 3D environments.

• Demonstrated success implementing and scaling production systems in complex environments.

Compensation

For this role, the target salary range is $120,000 - $250,000 (actual range may vary based on experience).

This is the lowest to highest salary we reasonably and in good faith believe we would pay for this role at the time of this posting. We may ultimately pay more or less than the posted range, and the range may be modified in the future. An employee's pay position within the salary range will be based on several factors, including, but not limited to, relevant education, qualifications, certifications, experience, skills, geographic location, performance, and business or organizational needs.

• Medical, dental, vision, and life insurance plans for employees

• 401k

• Relocation support may be provided for certain situations, based on business need.

• Flexible vacation policy

ITAR Requirements

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.

Hadrian Is An Equal Opportunity Employer

It is the Company’s policy to provide equal employment opportunity for all applicants and employees. The Company does not unlawfully discriminate on the basis of race inclusive of traits historically associated with race (including, but not limited to, hair texture and protective hairstyles, such as braids, locks and twists), color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, transgender status, national origin (including, in California, possession of a drivers license), ancestry, citizenship, age, physical or mental disability, height or weight, medical condition, family care status, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, exercise of reproductive rights, any other basis protected by local, state, or federal laws, or any combination of the above characteristics. When necessary, the Company also makes reasonable accommodations for disabled candidates and employees, including for candidates or employees who are disabled by pregnancy, childbirth, or related medical conditions.