Full-Time

Lead Systems Engineer

Seabed Systems

L3Harris Technologies

L3Harris Technologies

10,001+ employees

Defense technology solutions for national security

Compensation Overview

$127.5k - $236.5k/yr

No H1B Sponsorship

Herndon, VA, USA + 1 more

More locations: Millersville, Odenton, MD, USA

In Person

Up to 15% travel, including up to four continuous weeks away from home and aboard ships at sea.

US Citizenship, US Top Secret Clearance Required

Bachelor's, Master's

Category
Electrical Engineering
Required Skills
Bash
Microsoft Office
MATLAB
C/C++
Data Analysis

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Requirements
  • A bachelor's degree with a minimum of 9 years of prior relevant experience, or a graduate degree with a minimum of 7 years of prior related experience; a degree may be replaced by 13 years of prior related experience.
  • Mastery of underwater acoustic propagation modeling using tools such as BELLHOP/BELLHOP3D, RAM/PE, CASS, SST, Acoustics Toolbox, KRAKEN, SCOOTER/SPARC, and OASES, or equivalent physics-based solvers.
  • Expert fluency in ocean acoustics, including sound speed structure, volume and boundary interactions, signal propagation and coherence, ambient noise structure and coherence, and traditional analytical models and databases.
  • Experience building end-to-end analysis workflows integrating acoustic propagation models, MATLAB processing, environmental databases, Bash scripts, and C-language programming.
  • Experience validating modeling outputs against established legacy tools and physics-based benchmarks to ensure model fidelity and traceability.
  • Expertise analyzing acoustic system design and performance, including ocean signal propagation and noise properties, sensor transduction, front-end signal conditioning, phased array design and performance, short- and long-haul telemetry, sonar and communications signal processing, operator interfaces, and data display.
  • Experience analyzing customer requirements and allocating performance specifications among end-to-end system elements.
  • Experience applying acoustic modeling to deployed seabed sensor systems, mobile platform sonar systems, or underwater acoustic communications channels.
  • Experience translating raw model outputs into performance budgets, detection range estimates, coverage assessments, and operational scenario analyses.
  • Familiarity and experience with experimental methods for characterizing ocean acoustic environments and sonar or communication system performance.
  • Experience planning at-sea activities, including defining sea test objectives and metrics, specifying acoustic sources and receivers, specifying at-sea recording and analysis for quality assurance, defining participant roles and responsibilities, defining platform capabilities, and managing data collection, analysis, and reporting.
  • Experience in systems engineering and the government program acquisition lifecycle.
  • Working knowledge of a standard systems engineering process such as MIL-STD-499, EIA-632, IEEE 1220, or IEEE/ISO/IEC 15288.
  • Experience using Microsoft Office products.
  • Knowledge of DOORS and Model-Based Systems Engineering.
  • Ability to obtain and maintain a United States Department of Defense security clearance, which requires United States citizenship.
  • Ability to obtain and maintain additional clearances as required.
  • Willingness to travel up to 15%, including up to four continuous weeks away from home and aboard ships at sea.
Responsibilities
  • Review, analyze, and understand program-level objectives, system concepts of operation, system and subsystem equipment, functions, interfaces, and operations.
  • Define, flow down, and maintain traceability for requirements for complex electronic systems using Model-Based Systems Engineering processes.
  • Develop and maintain computer models of sonar system performance based on ocean sound propagation, source and receiver characteristics, and signal detection algorithms.
  • Collaborate with Systems Engineers to develop system specifications, logically derived and linked requirements, interface definitions, system diagrams, systems analyses, trade studies, and detailed designs.
  • Develop and coordinate engineering artifacts for program design reviews.
  • Participate in technical exchanges with customers and subcontractors.
  • Support systems engineering execution within the business area across cost, schedule, and technical dimensions.
  • Architect, analyze, develop, and integrate end-to-end systems.
  • Evaluate overall systems project risks and support risk mitigation planning and execution with program and functional leadership.
  • Conduct analysis and design tests to validate system designs.
  • Support testing activities by developing plans, providing data-recording and analysis requirements, and producing analysis reports.
  • Analyze data from design-verification testing and maintain test results.
  • Brief program and customer stakeholders on status and results.
  • Participate in sea trials and system installations.
Desired Qualifications
  • Design expertise in one or more end-to-end acoustic system elements.
  • Active Department of Defense Secret clearance with a current six-year update.
  • Experience with DOORS, the Cameo suite of Model-Based Systems Engineering tools, or similar tools, and Microsoft Visio.
  • Experience with Earned Value Management.
  • Familiarity with underwater products and acoustics.
  • Working knowledge of Cisco routers and switches.
  • Experience with radio-frequency communication theory.
L3Harris Technologies

L3Harris Technologies

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L3Harris Technologies provides defense and national-security technology solutions across space, air, land, sea, and cyber domains. It develops integrated systems with advanced communications, surveillance, and reconnaissance to support government agencies and defense contractors under long-term contracts. The product combines hardware, software, and services to deliver secure, interoperable, mission-critical capabilities. Its goal is to help clients strengthen operational readiness and national security through reliable, multi-domain technologies and sustained partnerships.

Company Size

10,001+

Company Stage

IPO

Headquarters

Melbourne, Florida

Founded

1895

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Simplify Jobs

Simplify's Take

What believers are saying

  • July 27, 2026 DoW deals target tripling PAC-3 and quadrupling THAAD output.
  • Q2 2026 revenue hit $5.9 billion, backlog reached $42 billion, guidance rose.
  • Intuitive Machines selected August 4, 2026 for 18 spacecraft on the SDA Tranche 3 mission.

What critics are saying

  • August 17, 2026 CEO ouster spotlights governance weakness and distracts execution.
  • September 2026 program delays and supply-chain pressure threaten margins before awards definitize.
  • If interceptor capacity expansions slip past 2028, Pentagon re-sources propulsion to rivals.

What makes L3Harris Technologies unique

  • Aerojet Rocketdyne makes L3Harris indispensable for PAC-3, THAAD, and NGI propulsion.
  • Sam Mehta keeps a focused structure, emphasizing missiles, space, and spectrum dominance.
  • NASA Roman telescope hardware proves L3Harris can win complex space programs.

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Benefits

Health Insurance

Disability Insurance

401(k) Retirement Plan

401(k) Company Match

Paid Vacation

Paid Holidays

Mental Health Support

Relocation Assistance

Growth & Insights and Company News

Headcount

6 month growth

14%

1 year growth

14%

2 year growth

14%
Yahoo Finance
Sep 11th, 2026
L3Harris lands $4.7B Patriot missile deal to boost US interceptor production to 2,000 units by 2030

L3Harris Technologies has secured a seven-year, $4.7 billion contract with Lockheed Martin to manufacture Patriot missile defence components. The Melbourne, Florida-based defence contractor will produce advanced two-pulse solid rocket motor propulsion systems for the PAC-3 Missile Segment Enhancement interceptor, designed to neutralise aircraft, cruise missiles and ballistic threats. This marks L3Harris's largest PAC-3 propulsion contract. The company operates a facility in Northampton, Massachusetts, through its KEO division, which produces naval technology including US periscope systems and radar systems for surface ships and submarines. To meet production demands, L3Harris broke ground on two new facilities in Camden, Arkansas, in June. The expansion supports the US Department of Defense's goal to increase annual interceptor production from approximately 600 units to 2,000 units by 2030.

Business Wire
Aug 30th, 2026
L3Harris tech powers NASA's Roman Space Telescope to map universe 1,000 times faster than Hubble

L3Harris Technologies has provided key components for NASA's Nancy Grace Roman Space Telescope, which recently launched successfully. The company supplied the 2.4-metre Optical Telescope Assembly and radiation-hardened electronics for the observatory, which will operate approximately 1 million miles from Earth. The telescope is designed to survey the cosmos 1,000 times faster than the Hubble Space Telescope. Once operational, it will conduct three primary surveys, including scanning roughly 12% of the entire sky in under 18 months to measure the universe's expansion rate and study supernova explosions from up to 8 billion years ago. The project represents more than a decade of collaboration between L3Harris and NASA's Goddard Space Flight Center. L3Harris has previously contributed technology to missions including the James Webb Space Telescope and Mars rovers.

Yahoo Finance
Aug 22nd, 2026
L3Harris taps Intuitive Machines to build 18 spacecraft for $1.8B missile defence mission

L3Harris Technologies selected Intuitive Machines on 4 August to build 18 advanced spacecraft platforms for the Space Development Agency's Accelerated Missile Defense Tranche 3 mission. Intuitive Machines will manufacture and deliver the satellite platforms to host L3Harris' payload technology for national security space operations. L3Harris reported Q2 2026 revenue of $5.9 billion, an 8% year-over-year increase, with net income of $600 million. The company raised its full-year 2026 revenue guidance to $23.2 billion–$23.7 billion, backed by a $42.0 billion backlog. Intuitive Machines reported Q2 2026 revenue of $206 million, more than four times its prior-year level. However, the company posted an operating loss of $47 million and burned $84 million in cash during the quarter, leaving $367 million in cash. Its backlog expanded to a record $1.8 billion.

Yahoo Finance
Aug 18th, 2026
L3 Harris CEO ousted amid misconduct allegations, echoing 2012 Lockheed Martin exit

Christopher Kubasik has been ousted as CEO of L3 Harris following allegations of misconduct. According to Semafor, citing sources familiar with the matter, an investigation found he was engaged in an inappropriate relationship with a subordinate. This marks the second time Kubasik has been forced out of a leadership position under similar circumstances. In 2012, he was set to become CEO of Lockheed Martin but resigned after an ethics investigation confirmed he had a close personal relationship with a subordinate employee. L3 Harris, headquartered in Melbourne, Florida, announced Kubasik's departure on 17 August. The company said the misconduct was unrelated to financial reporting, controls, customer relationships or operational performance. Kubasik will retain some vested stock options but won't receive severance payments.

Yahoo Finance
Aug 17th, 2026
L3Harris CEO steps down after conduct review, shares fall 2.7%

L3Harris Technologies announced the immediate departure of CEO Christopher Kubasik following a conduct review, causing shares to fall roughly 2.7% in premarket trading Monday. The board appointed Sam Mehta as president and CEO, whilst Lewis Hay III became independent chairman. The company stated Kubasik's conduct was inconsistent with its Code of Conduct, though unrelated to financial reporting, controls, customer relationships, or operational performance. Following an investigation with independent counsel, the board entered into a separation agreement with Kubasik. Mehta joined L3Harris in 2023 and brings over 25 years of aerospace and defence leadership experience. He previously led segments comprising more than 80% of the company's total revenue. Despite the leadership change, L3Harris reaffirmed its 2026 consolidated revenue and financial guidance.