Castellum
Castellum
About Castellum
Castellum develops advanced RF solutions, primarily serving the defense and aerospace sectors. The company focuses on high-performance RF components and systems, with a commitment to meeting stringent military standards. Engineering at Castellum involves RF design, signal processing, and systems integration. The team addresses challenges in communication reliability and signal integrity, ensuring robust performance in demanding environments. Specific details about headcount or product lines are not publicly available.
Current Job Openings
1 jobsAll Castellum Job Openings
-
RF Engineer
@ Castellum
📍Arlington, United States 🇺🇸📊 mid-level⏱︎ contractRF antennas propagationView RF Engineer
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About Castellum
Castellum develops advanced RF solutions, primarily serving the defense and aerospace sectors. The company focuses on high-performance RF components and systems, with a commitment to meeting stringent military standards. Engineering at Castellum involves RF design, signal processing, and systems integration. The team addresses challenges in communication reliability and signal integrity, ensuring robust performance in demanding environments. Specific details about headcount or product lines are not publicly available.
Castellum Career Opportunities
Castellum currently has 1 active embedded systems position in 1 location. All positions are on-site, typical for hardware-focused roles requiring lab access and equipment. Recognized as a top-tier employer (85.0/100), Castellum offers competitive compensation and strong career development paths in embedded engineering.
Castellum Hiring Trends
* Data represents job posting activity over the past 6 months: Jan 2026 through Jun 2026
Hiring momentum at Castellum is currently increasing, with 1
opening posted this month compared to 0 last month.
This upward trend often signals product development acceleration, team scaling, or new project initiatives.
Over the past 6 months, Castellum averaged 0.2 job postings per month,
with peak hiring in Jun 2026 (1 openings).
For embedded systems roles, hiring activity typically correlates with product development cycles,
especially for firmware teams during pre-production phases and hardware engineers during prototyping.
📈 New hiring activity
Consistent hiring velocity
Jun 2026
Required Skills at Castellum
RF is the most in-demand skill at Castellum,
appearing in 100% of current job listings.
This universal requirement indicates RF forms the core of Castellum's
technical stack across all engineering teams.
Castellum's technology stack spans 5 distinct skills and tools,
reflecting the multifaceted nature of embedded systems development.
The focused skill requirements suggest specialized work in specific embedded domains.
Engineering Roles at Castellum
Castellum is currently hiring for a focused RF Engineer position, likely to address a specific technical gap or project need.
Experience level distribution: 100% of openings target mid-level-level engineers.
Where Castellum is Hiring
Castellum's engineering operations are concentrated in a single country across 1 location. A single-location focus enables tight team collaboration and simplified operations, particularly valuable for hardware-intensive development requiring shared lab facilities.
Companies Similar to Castellum
These employers share technical focus areas with Castellum and are actively hiring embedded engineers. Exploring multiple companies helps candidates understand market compensation, compare technical challenges, and identify the best cultural and technical fit for their career goals.
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