Engineering Jobs in Fullerton, CA

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Lead, Electrical Engineer

Job Number: 34232

Job Location: Yorba Linda, California, On Site

Job Schedule: 4/10

Clearance: Must Have the Ability to Obtain and Maintain a Department of War Security Clearance

Job Description:

As a Lead Electrical Engineer, the candidate must have experience with L band RF systems, able to work from customer requirements to derive additional requirements, define the architecture of a possible solution based on requirements, setup a requirements schema & link requirements to documents (systems/subsystem specification, hardware/RF architecture description document, etc.) and flow down applicable requirements to other groups (software, ASIC, & test) so that they can contribute to realize the end solution based on the proposed architecture. The Lead EE will also oversee the development a qualification test plan that will ensure that the architecture and solution satisfy the customers' requirements. The Lead EE will also work with subject matter experts in the areas of GPS signal processing, anti-jam signal processing, other hardware design team members, control software, and government qualification standards. As a Lead EE, the candidate is expected to understand each aspect of the technology used in the proposed solution. The Lead EE also must work with the cost account manager, program management, and project management to develop the solution within the program's budget and schedule.

Essential Functions:

• Requires comprehensive level knowledge of Electrical Engineering low frequency and high frequency (RF) Analog and Digital circuit design.
• Experience with RF systems, ideally GPS receivers
• Able to contribute to providing innovative Electrical Engineering solutions consistent with business development plans.
• Ability to develop circuit designs, requirements, design descriptions, verification plans/procedures, customer CDRLs to meet program schedules.
• Ability to support cross functional teams for cross functional conflict resolution, Root Cause Analysis, blank page architecture developments and design
• Ability to contribute to algorithm development, analysis, implementation, system architecture, verification, and Test with emphasis on military GPS electronics.
• Ability to contribute to execution of design, build, integration and test activities, problem resolution and verifying that the deliverable products meet all program and customer requirements.
• Ability to provide project management reports as required, support senior level and customer reviews as necessary.
• Ability to provide inputs and reviews of the engineering technical baseline as part of proposal efforts.
• Ability to interface with the program's leadership and other teams (SW, Systems, ME, and Test) on a frequent basis, conduct or participate in customer and/or program technical review presentations, and provide progress status updates on work products.
• Ability to participate or lead in the product development process including design reviews.

• 5 to 10% Travel required.
• Must have Secret Security Clearance or be able to obtain a US security clearance.

Qualifications:

• Required Education/Experience: Requires mastery level knowledge within a specific technical area or multiple job areas. Viewed as an expert and/or resource within the field by peers in and outside the organization.
• Bachelor's Degree and a minimum of 9 years of prior relevant experience.
• Graduate Degree and a minimum of 7 years of prior related experience.
• In lieu of a degree, a minimum of 13 years of prior related experience.
• Minimum of 5 years' experience in ability to capture schematics design and PCBA Layout using modern EE CAD such as Altium or Mentor Graphics.
• 5 years' experience with project management and product design team leadership guided by individual annual goals and objectives with minimal oversight or direction; working in a team environment as an individual contributor.
• 6 years' strong experience with receiver, Antenna, or Radio design (i.e. RF).
• 4 years' experience with embedded Hardware design.
• 2 years' experience with FPGA design with emphasis in digital signal processing (DSP)
• 4 years' experience demonstrating strong verbal and written skills
• 7 Years experience with design tools such as MATLAB/Simulink, P-Spice, Agilent ADS (or AWR), Schematics Capturing/PCBA Layout tools such as Altium, and Ansys HFSS
• 2 Years' experience with FPGA design tools such as Xilinx ISE, Xilinx EDK, and ModelSim

• Must have Secret Security Clearance or be able to obtain a US security clearance.

Preferred Additional Skills:

• Strong familiarity with GPS Module design and topology.
• Advanced with High-speed Analog design methodologies.
• Advanced in MS Office, design tools such as Simulink/MATLAB, P-Spice, Altium (Schematics Capturing & PCBA Layout), Agilent ADS (or AWR), and Ansys HFSS.
• Familiar with FPGA design methodologies.
• Proficient with DO-254 design.

In compliance with pay transparency requirements, the salary range for this role in California, Massachusetts, New Jersey, Washington, and the Greater D.C, Denver, or NYC areas is

Min $127,500.00 - $ 236,500.00 Max. The salary range for this role in Colorado state, Hawaii, Illinois, Maryland, Minnesota, New York state, Cleveland Ohio, and Vermont is $110,500.00 Min - $205,500.00 Max.

This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave,
paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

#LI-KM1

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Scientist, Electrical Engineer

Job Number: 34122

Job Location: Yorba Linda, California, On Site

Job Schedule: 4/10

Job Description:

L3Harris is looking for candidates for the Scientist in Hardware and RF Electrical Engineering in our Navigation Solutions (NS) business in Yorba Linda, CA (IEC). The candidate will be responsible for and provide senior hands-on expert level in hardware and RF Electrical engineering on multiple programs. The candidate must have deep Engineering and broad Engineering technical expertise, industry recognition in defense and commercial applications, and experience in military GPS and Position Navigation and Timing (PNT) technology or other RF hardware designs and hands-on. Our Navigation Solutions products provide advanced military GPS and Position, Navigation, Timing (PNT) capabilities in military embedded real-time systems that can be used in weapons, ground, airborne, maritime, and space environments.

Essential Functions:

• Must provide overall hands-on technical expertise in Hardware and RF Electrical Engineering for NS programs.
• Expert hands-on knowledge of Electrical Engineering low frequency and high frequency (RF) analog and CCA design.
• Requires comprehensive level knowledge of Electrical Engineering low frequency and high frequency (RF) Analog and Digital circuit design. Experience with RF systems, ideally GPS receivers
• Able to contribute to providing innovative Electrical Engineering solutions consistent with business development plans.
• Ability to develop circuit designs, requirements, design descriptions, verification plans/procedures, customer CDRLs to meet program schedules.
• Ability to support cross functional teams for cross functional conflict resolution, Root Cause Analysis, blank page architecture developments and design
• Ability to contribute to algorithm development, analysis, implementation, system architecture, verification, and Test with emphasis on military GPS electronics.
• Ability to contribute to execution of design, build, integration and test activities, problem resolution and verifying that the deliverable products meet all program and customer requirements.
• Ability to provide project management reports as required, support senior level and customer reviews as necessary.
• Ability to provide inputs and reviews of the engineering technical baseline as part of proposal efforts.
• Ability to interface with the program's leadership and other teams (SW, Systems, ME, and Test) on a frequent basis, conduct or participate in customer and/or program technical review presentations, and provide progress status updates on work products.
• Ability to participate or lead in the product development process including design reviews.
• 5 to 10% Travel required.
• Must have Secret Security Clearance or be able to obtain a US security clearance.

Qualifications:

• Bachelor's degree in electrical engineering and a minimum of 12 years of prior relevant experience.
• Graduate Degree and a minimum of 10 years of prior related experience.
• In lieu of a degree, minimum of 16 years of prior related experience.
• Minimum of 7 years' experience in ability to capture schematics design and PCBA Layout using modern EE CAD such as Altium or Mentor Graphics.
• 5 years' experience with project management and product design team leadership guided by individual annual goals and objectives with minimal oversight or direction; working in a team environment as an individual contributor.
• 8 years' strong experience with receiver, Antenna, or Radio design (i.e. RF).
• 4 years' experience with embedded Hardware design.
• 4 years' experience demonstrating strong verbal and written skills
• 7 Years experience with design tools such as MATLAB/Simulink, P-Spice, Agilent ADS (or AWR), Schematics Capturing/PCBA Layout tools such as Altium, Mentor Graphics, and Ansys HFSS

• Must have Secret Security Clearance or be able to obtain a US security clearance.

Preferred Additional Skills:

• Recognized as an Analog RF Electrical and Radio Receivers in industry.
• Experience and understanding in detailed RF receiver designs in military GPS, MGNSS, and other PNT technology.
• Strong familiarity with modern GPS Module design and topology.
• Advanced with High-speed Analog design methodologies.
• Experience with HAM radio is a plus.
• Advanced in MS Office, design tools such as Simulink/MATLAB, P-Spice, Altium (Schematics Capturing & PCBA Layout), Agilent ADS (or AWR), and Ansys HFSS.
• Proficient with DO-254 design.

In compliance with pay transparency requirements, the salary range for this role in California, Massachusetts, New Jersey, Washington, and the Greater D.C, Denver, or NYC areas is Min $153,000.00 - $284,000.00 Max. The salary range for this role in Colorado state, Hawaii, Illinois, Maryland, Minnesota, New York state, Cleveland Ohio, and Vermont is $133,000.00 Min - $247,000.00 Max. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

#LI-KM1

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

• Leading the Naval network warfare missions in developing tactics and procedures to realize tactical, strategic and business advantages afloat and ashore
• Driving interoperability with joint, allied and coalition partners
• Building professional excellence through education, training and certification and milestone qualifications
• Optimizing organizational effectiveness through cutting-edge technologies, knowledge management techniques and a culture of innovation
• Helping to develop and deploy information systems, command and control and space systems
• Serving as a key part of the Information Dominance Corps in its mission to gain a deep understanding of the inner workings of adversaries
• Overseeing the work of Information Systems Technicians - Enlisted Sailors (no degree required) who serve as specialists in information technology

• Serving as part of Battle Group staffs on ships at sea
• Working in C4I/Space/Surveillance on shore tours
• Serving on major Navy and joint staffs
• Serving in command of key communication and surveillance facilities around the globe

• Pursuing opportunities at institutions such as Naval Postgraduate School (NPS) or Navy War College (NWC)
• Completing Joint Professional Military Education (JPME) at one of the various service colleges

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Sr. Specialist, Systems Engineering

Job Code: 32594

Job Location:Yorba Linda, CA

Job Schedule: 4/10 or open to 9/80

Job Description: The Senior Specialist, Systems Engineer is an intermediate professional with practical knowledge of job area. Works without supervision to set objectives for own job area. Communicates with contacts inside and outside own team to explain and interpret operational processes, practices, and procedures. Identifies and addresses changes within own job area. Works to achieve operational targets with some impact on departmental results.Work consists of making basic adjustments to systems and processes to solve problems. Identifies, defines, and addresses general problems that are typically within the immediate job area. Problems are typically solved through drawing from prior experiences or standard procedures and basic analysis.

Essential Functions:

• Support digital engineering and Model-Based Systems Engineering (MBSE)
• Conducting trade studies
• Generation of requirements specifications
• Generation of functional block diagrams, use-case diagrams, etc.
• Integration and test planning, including generation of plans and procedures.
• Interfacing with the other engineering disciplines (e.g. mechanical, project, etc.) to ensure proper coordination of the systems aspects of the project.
• Generate and/or update drawings, parts lists, Engineering Orders, wiring lists, diagrams, and schematics.
• Generation of Engineering Change Orders
• Creation and presentation of design review materials
• Verification of system interfaces
• Must have the ability to travel.
• Work to influence others to accept individual or team's views or practices and changes to concepts, practices, and approaches.

Qualifications:

• Bachelor's Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
• Must have the ability to obtain and maintain a Security Clearance
• 5+ years of direct Engineering experience

Preferred Additional Skills:

• Direct experience working with at least one of the following technologies: Underwater Acoustics, Telemetry, Communications, Data Recording systems, and/or Radar.
• Excellent written and oral communication skills.
• Demonstrated initiative, drive, and interpersonal skills.
• Familiarity with DOORS requirements management software
• Familiarity with Model-Based Systems Engineering (MBSE)
• Proficiency with MS Word, Excel, and PowerPoint

In compliance with pay transparency requirements, the salary range for this role in California,
Massachusetts, New Jersey, Washington, and the Greater D.C, Denver, or NYC areas is $106,500 -
$197,500. The salary range for this role in Colorado state, Hawaii, Illinois, Maryland, Minnesota, New
York state, Cleveland Ohio, and Vermont is $90,500 - $168,500. This is not a guarantee of
compensation or salary, as final offer amount may vary based on factors including but not limited to
experience and geographic location. L3Harris also offers a variety of benefits, including health and
disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave,
paid time off, and company-paid holidays. The specific programs and options available to an employee
may vary depending on date of hire, schedule type, and the applicability of collective bargaining
agreements.

#LI-EB1

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

• Pursuing opportunities at institutions such as Naval Postgraduate School (NPS) or Navy War College (NWC)
• Completing Joint Professional Military Education (JPME) at one of the various service colleges

About Us:

Astiva Health, Inc., located in Orange, CA is a premier health plan provider specializing in Medicare and HMO services. With a focus on delivering comprehensive care tailored to the needs of our diverse community, we prioritize accessibility, affordability, and quality in all aspects of our services. Join us in our mission to transform healthcare delivery and make a meaningful difference in the lives of our members.

SUMMARY:

We are seeking a skilled and adaptable Junior AI/ML Engineer to join our fast-moving team building impactful AI solutions in healthcare. Our work focuses on extracting and interpreting data from unstructured medical documents, improving clinical coding accuracy, streamlining administrative processes, and enhancing patient outreach.

Projects will evolve rapidly, from fine-tuning large language models (LLMs) on specialized medical PDFs, to optimizing OCR pipelines in Azure, and new challenges emerge regularly. This role suits someone who thrives in ambiguity, enjoys hands-on model development, and wants to directly influence healthcare delivery through applied AI/ML.

ESSENTIAL DUTIES AND RESPONSIBILITIES include the following:

• Design, fine-tune, and optimize large language models (LLMs) and multimodal models for healthcare-specific NLP tasks, such as information extraction, classification, and summarization from clinical documents (e.g., medical charts, patient files, scanned forms).
• Develop and improve document understanding pipelines, including fine-tuning OCR / layout-aware models (especially in cloud environments like Azure AI, Azure Foundry) to handle real-world variability in medical forms, handwriting, and scanned PDFs.
• Build and iterate on end-to-end ML solutions that transform unstructured healthcare data into structured, actionable insights
• Collaborate closely with clinicians, product managers, data annotators, and engineers to define problems, curate/annotate datasets, evaluate model performance against clinical and business metrics, and iterate quickly.
• Deploy models into production environments (cloud-based inference, batch processing, or API endpoints) with attention to latency, cost, scalability, and healthcare compliance considerations (HIPAA, data privacy).
• Stay current with advancements in LLMs, vision-language models, efficient fine-tuning techniques (LoRA/QLoRA, PEFT), RAG, multimodal AI, and domain-specific healthcare AI research.
• Contribute to a culture of rapid prototyping, rigorous evaluation, and continuous improvement in a dynamic project landscape where priorities can shift based on new opportunities or stakeholder needs.
• Other duties as assigned

REQUIRED TECHNICAL SKILLS:

• Proficiency in Python and familiarity with common ML frameworks (e.g., PyTorch, TensorFlow, scikit-learn)
• Experience applying NLP techniques to unstructured text
• Hands-on experience working with LLMs, including:
• Prompt design and iteration
• Using pre-trained models for classification or extraction tasks
• Foundational understanding of model fine-tuning, such as:
• Fine-tuning transformer models or LLMs for classification or information extraction
• Adapting existing training scripts or examples to new datasets
• Familiarity with model evaluation metrics (precision, recall, F1) and basic error analysis
• Experience working with labeled datasets and annotation outputs, including reviewing label quality
• Understanding of common ML problem types, including binary and multi-label classification
• Awareness of model bias, label noise, and false positives, with the ability to discuss tradeoffs and mitigation strategies
• Basic understanding of production ML workflows (versioning, reproducibility, monitoring concepts)

OTHER SKILLS and ABILITIES:

• Hands-on fine-tuning experience with LLMs (e.g., Hugging Face, OpenAI fine-tuning, Azure Foundry), even if limited to small-scale or academic projects
• Exposure to cloud ML platforms (Azure ML, AWS SageMaker, or GCP)
• Familiarity with RAG architectures and retrieval-based grounding
• Experience with NLP libraries (spaCy, Hugging Face Transformers, NLTK)
• Introductory experience with weak supervision or noisy-label learning
• Interest in healthcare or biomedical NLP
• Curiosity about knowledge graphs, ontologies, or structured prediction
• Familiarity with secure data handling practices
• Willingness and ability to learn workflows for sensitive or regulated data (e.g., HIPAA-covered healthcare data), including privacy-aware data handling and secure ML workflows

EXPERIENCE:

• Bachelor’s Degree in related field
• 1–2 years of experience in machine learning, applied NLP, or software engineering
• Demonstrated some experience training or fine-tuning ML models, not just using APIs
• Ability to collaborate with senior engineers and domain experts and incorporate feedback

BENEFITS:

• 401(k)
• Dental Insurance
• Health Insurance
• Life Insurance
• Vision Insurance
• Paid Time Off
• Free catered lunches