Reactor Software Engineer I/II at Antares
Los Angeles, CA
$120,000–$160,000
Jul 15, 2026
Los Angeles, CA
Jul 21, 2026
What this job asks for AI summary
A software engineering role focused on building the control, telemetry, and data acquisition software that operates a novel microreactor and its test environments. The work spans command handling, fault detection, state management, and operator tooling, with the same codebase expected to run across simulation, hardware test stands, and live reactor hardware. Suits engineers with hands-on experience integrating software with physical hardware systems.
Mid level · Los Angeles-Long Beach-Anaheim, CA · Bachelor's required · Full-time
Pay in the description: $120,000–$160,000
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Roughly 7,200 people in the Los Angeles-Long Beach-Anaheim, CA area plausibly meet what this posting asks for (software developers). range 3,800–9,400
Applicant volume Heavy — This req sits in a large pool with little in its requirements to thin it, and auto-apply tools fire at everything in the occupation. Applying early and leading with the rare skills below is what gets read.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $164,459 (middle half $130,334–$195,752). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (8)
This posting covers two levels simultaneously: Software Engineer I (0–2 yrs, $120k–$135k) and Software Engineer II (2–5 yrs, $135k–$160k). The seniority band is set to Mid to reflect the midpoint of the combined range; a Junior band is also plausible for the I-level track.
The compensation range ($120k–$160k/yr) spans both levels; the actual offer depends on which level the candidate is hired into.
ITAR/export-control compliance is a hard gate: applicants must be U.S. persons or eligible to obtain required export authorizations. This is not a formal security clearance requirement.
No explicit work location city is stated in the posting. Antares is a Los Angeles–area company (founded 2023, team from SpaceX/Relativity Space/etc.), so the CBSA is inferred as Los Angeles-Long Beach-Anaheim, CA. The posting's culture section emphasizes in-person teamwork, suggesting on-site or hybrid rather than fully remote.
asyncio is listed as an example of concurrent/async patterns alongside threads and multiprocessing; all are presented as interchangeable illustrations of the same requirement, so they are grouped under one skill.
C, C++, and Rust appear together under Preferred Skills and are treated as interchangeable alternatives for the same low-level/embedded language requirement.
Docker/containerized environments appear only in the Preferred section under 'containerized environments' with no specific tool named; Docker is the canonical tool inferred for that requirement.
Hardware integration experience (DAQs, sensors, serial devices, embedded systems) is a required qualification but names no single specific technology product, so it is not emitted as a named skill per extraction rules.
Read the full posting
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