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72 Str Principal Engineer Jobs Hiring Near You

STR

Principal Model-Based Systems Engineer

Dayton, OH

$206K - $284K/yr

STR is hiring a Principal Model-Based Systems Engineer (MBSE) in our Woburn, MA office (other locations : Dayton, OH & Arlington, VA ) to work across a broad portfolio of DoD mission areas. The ...

STR

Principal Model-Based Systems Engineer

Dayton, OH · On-site

$206K - $284K/yr

STR is hiring a Principal Model-Based Systems Engineer (MBSE) in our Woburn, MA office (other locations: Dayton, OH & Arlington, VA) to work across a broad portfolio of DoD mission areas. The Systems ...

STR

Principal Model-Based Systems Engineer

Dayton, OH

$206K - $284K/yr

STR is hiring a Principal Model-Based Systems Engineer (MBSE) in our Woburn, MA office (other locations : Dayton, OH & Arlington, VA ) to work across a broad portfolio of DoD mission areas. The ...

STR

Principal Radar Systems Engineer

Dayton, OH

STR is focused on delivering National Defense capabilities by driving mission-focused strategies to ... Principal Radar Systems Engineer to support/lead the architecting, design, development, and ...

STR

Principal Radar Systems Engineer

Dayton, OH · On-site

STR is focused on delivering National Defense capabilities by driving mission-focused strategies to ... Principal Radar Systems Engineer to support/lead the architecting, design, development, and ...

STR

Principal Radar Systems Engineer

Dayton, OH

STR is focused on delivering National Defense capabilities by driving mission-focused strategies to ... Principal Radar Systems Engineer to support/lead the architecting, design, development, and ...

STR

Principal Signal Processing Researcher

Dayton, OH · On-site

$206K - $284K/yr

The Sensors Division at STR focuses on technology development for advanced sensor systems and ... PhD, MS, or BS in Electrical Engineering, Applied Mathematics, Physics, or related technical ...

STR

Principal Signal Processing Researcher

Dayton, OH

$206K - $284K/yr

The Sensors Division at STR focuses on technology development for advanced sensor systems and ... PhD, MS, or BS in Electrical Engineering, Applied Mathematics, Physics, or related technical ...

STR

Principal Signal Processing Researcher

Dayton, OH

$206K - $284K/yr

The Sensors Division at STR focuses on technology development for advanced sensor systems and ... PhD, MS, or BS in Electrical Engineering, Applied Mathematics, Physics, or related technical ...

STR

Lead Program Manager

Dayton, OH · On-site

$140K - $194K/yr

... of STR's facilities, you are welcome to work remotely. What You Will Do: * Manage teams of scientists, engineers, and technicians across broad areas of expertise * Work with the principal ...

STR

Lead Program Manager

Dayton, OH · Hybrid

$140K - $194K/yr

... of STR's facilities, you are welcome to work remotely. What You Will Do: * Manage teams of scientists, engineers, and technicians across broad areas of expertise * Work with the principal ...

STR

Lead Program Manager

Dayton, OH · Hybrid

$140K - $194K/yr

... of STR's facilities, you are welcome to work remotely. What You Will Do: * Manage teams of scientists, engineers, and technicians across broad areas of expertise * Work with the principal ...

STR

Program Manager & Operations Lead

Dayton, OH

$140K - $193K/yr

You will work closely with Principal Investigators, Chief Engineers, and technical staff to ensure ... STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH ...

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What are the key skills and qualifications needed to thrive as a Principal Engineer, and why are they important?

To thrive as a Principal Engineer, you need deep technical expertise in your engineering discipline, strong problem-solving abilities, and typically an advanced degree or equivalent experience. Familiarity with complex software development tools, architectural frameworks, and industry certifications like AWS Certified Solutions Architect or relevant PE licenses is common. Exceptional leadership, communication, and mentorship skills help Principal Engineers guide teams and influence project direction. These competencies are essential for driving innovation, ensuring technical excellence, and delivering large-scale, high-impact solutions.

How does a Principal Engineer typically collaborate with cross-functional teams to drive project success?

Principal Engineers play a key role in collaborating with cross-functional teams, such as product management, design, and operations, to ensure technical solutions align with business objectives. They often lead architectural discussions, mentor team members, and facilitate communication between engineering and non-engineering stakeholders. This collaboration helps identify potential challenges early, streamline development processes, and deliver high-quality products. Additionally, Principal Engineers are often involved in setting technical standards and guiding teams through complex problem-solving.

What are Principal Engineers?

Principal Engineers are highly experienced technical experts who lead engineering teams, provide strategic technical direction, and help solve complex engineering challenges within an organization. They often act as mentors, set technical standards, and collaborate with stakeholders across departments to drive innovation and ensure the success of engineering projects. Principal Engineers typically have many years of industry experience and are recognized for their deep technical knowledge and leadership skills.

What is the difference between Principal Engineer vs Senior Engineer?

AspectPrincipal EngineerSenior Engineer
CredentialsTypically requires 8+ years of experience, advanced technical skills, and often leadership or mentorship experienceUsually requires 3-7 years of experience with strong technical skills
Work EnvironmentLeads complex projects, influences technical strategy, collaborates across teamsFocuses on executing technical tasks, supporting project development, and mentoring junior staff
Employer & Industry UsageCommon in large tech companies, engineering firms, and organizations with advanced technical hierarchiesWidely used across industries for experienced technical contributors

The main difference between a Principal Engineer and a Senior Engineer lies in their level of responsibility, experience, and influence. Principal Engineers typically lead complex projects and shape technical strategies, while Senior Engineers focus on executing technical tasks and supporting team efforts. Both roles require strong technical skills, but Principal Engineers often have more leadership and strategic responsibilities.

What other companies are hiring for Principal Engineer jobs?
What are the most popular jobs at Str?
What are the most popular categories at Str?
Infographic showing various Principal Engineer job openings at Str in the United States as of May 2026, with employment types broken down into 100% Full Time. Highlights an 93% Physical, 4% Hybrid, and 3% Remote job distribution.
Principal Algorithm & Signal Processing Engineer

Principal Algorithm & Signal Processing Engineer

STR

Dayton, OH • On-site

$206K - $284K/yr

Full-time

Posted 19 days ago

Job description

About the Team:
The Electronic Warfare and Novel Capabilities Group (EWNC) develops and delivers advanced signal processing algorithms and prototype systems for next-generation radar and electronic warfare technologies. EWNC fosters a culture of innovation and collaboration. We investigate cutting edge technologies and interface with engineers across sectors and divisions at STR and researchers at academic institutions and industry partners to develop practical and effective solutions to RF sensing and counter-sensing challenges. If you're seeking an opportunity to apply your deep technical knowledge and creativity to make a lasting impact, we invite you to join us.
The Role:
We are looking for a Principal Engineer to develop state-of-the-art algorithms and techniques for sense making and sensor decision making, from signal detection and classification, to electronic support measures, attack, and protection, to cognitive EW and more. You will lead projects and proposal efforts, lead and advise fellow researchers, scientists, and engineers on multi-disciplinary teams spread across multiple STR campuses. You will seek to understand customer missions, and in turn, construct proposal and program plans to meet their current and future needs.
What you will do:
  • Engage directly with customers to understand their unique requirements and national security needs, and shape our solutions to meet their objectives
  • Lead projects and multi-disciplinary teams
  • Design and apply cutting-edge signal processing and machine learning techniques to solve complex radar and RF sensing and counter-sensing challenges
  • Support business development initiatives and lead writing efforts, playing a key role in shaping the future direction of our projects and organization

Who You Are:
  • This position requires the ability to obtain a security clearance, for which U.S. citizenship is needed by U.S. Government.
  • BS, MS, or PhD in Electrical Engineering, Applied Mathematics, Physics, or related technical discipline
  • 10+ years of relevant work experience or equivalent experience dependent on degree (PhD +5 years or MS +8 years)
  • Experience on EW or Radar programs, including the development of sensor system modes and advanced signal- and data-processing algorithms from mathematical/analytical derivation through testing and verification of system performance
  • Expertise in two or more of the following areas:
    • RF/radar signal processing, optimization, waveform design, electronic warfare, machine learning, adaptive signal processing, AI/ML algorithm development, algorithm development, model & simulation, systems engineering, test engineering, radar modelling, or RF systems prototyping
  • Experience providing technical briefs to subcontractors, senior level executives, and customers
  • Proficiency in one or more scientific or mathematical programming languages, such as MATLAB, Python, and C/C++
  • Experienced researcher and team member who is excited to work with mission partners to leverage cutting-edge technology and research for immediate impact
  • Excellent communicator and briefer, who is comfortable communicating with both technical and non-technical audiences
  • Strong mathematical, troubleshooting, written, and verbal communication skills

Even Better:
  • Active Secret or TS/SCI Clearance
  • Demonstrated leadership of complex research, development, and engineering efforts
  • Experience with:
    • Radar and RF technologies in the defense sector, particularly for RF sensing and electronic warfare applications including electronic attack, electronic protection, cognitive EW, radar signal processing, optimization, and advanced ESM techniques and algorithms
    • Machine learning tasks such as natural language processing, image recognition, semantic segmentation, reinforcement learning, approaches such as Bayesian, deep convolutional and graph neural network methods, and tools such as PyTorch, Ray, TensorFlow/board, and MLflow
    • Interacting with decision-makers and customers to translate mission needs into an end-to-end solution
  • Ability to apply novel, innovative and interdisciplinary approaches to challenging engineering problems

Pay Information
Full-Time Salary Range: $206,000 - $284,000
The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate's experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.
STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, and Carlsbad, CA. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.
STR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer.
STR is not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe! Visit us at www.str.us for more info.
STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.
If you need a reasonable accommodation for any portion of the employment process, email us at appassist@str.us and provide your contact info.
Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.

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