Top Tech Jobs & Startup Jobs in Los Angeles, CA

Lead administration and evolution of the Siemens NX CAD ecosystem: develop standards, automation, Check‑Mate rules, manage large assemblies, reusable libraries, produce manufacturing-ready drawings, enforce best practices, support PDM workflows, and partner with engineers on mechanical parts and complex assemblies for a nuclear microreactor.

Provide hands-on IT support and systems administration across endpoints, identity, network infrastructure, collaboration tools, cloud services, and internal apps. Maintain security, compliance, imaging/patching, monitoring, and documentation to support engineering, manufacturing, and business teams in a regulated, government-facing environment.

Designs, analyzes, tests, and qualifies safety-significant reactor structures, including core restraints, control drum supports, and heat exchanger vessel supports. Performs thermal, mechanical, and structural analyses; defines architectures, margins, and operating limits; creates engineering documentation; leads testing and validation; and collaborates with manufacturing, licensing, procurement, and suppliers through hardware deployment.

Develop and maintain real-time embedded firmware for microcontrollers and instrumentation used in microreactor control. Implement device drivers and communication protocols, support hardware bring-up and debugging, create test plans and verification, collaborate across electrical, controls, systems, and safety teams, and implement fault detection and safe-state logic for qualification and deployment.

The Manufacturing Engineer will develop manufacturing processes for nuclear reactor sub-systems, focusing on parts manufacturability, process qualifications, and collaboration across teams for design improvements.

Design and release mechanical hardware for reactor electronic systems including enclosures, racks, mounts, and cable management. Create 3D CAD models, drawings, BOMs, and PDM data. Perform structural, thermal, and environmental calculations/analyses. Collaborate with electrical, controls, manufacturing, and test teams; support prototyping, verification, supplier engagement, fabrication, deployment, and production issue resolution.

Build and scale the accounting function: own month-end/quarter/annual close, ensure GAAP-compliant reporting, lead technical accounting (revenue, stock comp, leases), implement controls and ERPs, support audits/tax, develop manufacturing and government contract accounting, and partner across Finance, Engineering, and Operations.

The Senior Build Quality Engineer develops and implements quality processes, ensures industry standards adherence, and drives quality assurance within the supply chain.

Design, document, and release wire harnesses end-to-end: 3D routing, schematics, connector and wire selection, and safety-class qualification. Own the toolchain, BOM, PLM/ECO process, supplier qualification, and in-house build operations, including technician supervision, training, and first-article support.

Antares is hiring engineers passionate about clean energy. Roles involve design, testing, software development, and operations. A degree in engineering or physics is required. Preferred skills include project management and industry experience.