Full-Time

Lead Software Engineer

Software Engineering

L3Harris Technologies

L3Harris Technologies

10,001+ employees

Defense technology solutions for national security

Compensation Overview

$135k - $250.5k/yr

+ 401(k) match

No H1B Sponsorship

Clifton, NJ, USA

In Person

Up to 10% travel to customer and test sites.

US Top Secret Clearance Required

Bachelor's, Master's

Category
Software Engineering (1)
Required Skills
Rust
High Performance Computing (HPC)
Software Testing
Jenkins
C/C++
DevOps
Linux/Unix

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Requirements
  • A Bachelor's Degree and a minimum of 9 years of prior relevant experience, or a 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.
  • An active Secret Clearance is required.
  • The ability to develop high-reliability C++ and Rust software for embedded, real-time, and Linux-based systems.
  • The ability to implement capabilities from system and software requirements with end-to-end traceability through verification.
  • Experience applying open architecture principles, including modularity, abstraction, portability, well-defined interfaces, interoperability, and maintainability.
  • The ability to work across system, solution, software, and platform architecture levels.
  • The ability to build, deploy, integrate, and troubleshoot software across multiple targets, lab environments, and platform configurations.
  • The ability to create and maintain unit, integration, and regression tests and improve automation and code coverage.
  • The ability to support CI/CD pipelines for build, test, static analysis, security scanning, coverage, and artifact publication.
Responsibilities
  • Develop and maintain high-reliability C++ and Rust software for embedded, real-time, and Linux-based systems.
  • Implement capabilities from system and software requirements with end-to-end traceability through verification.
  • Design, document, and evolve software architecture using UML and model-based artifacts as appropriate.
  • Apply open architecture principles to software design, including modular decomposition, interface-based design, separation of concerns, abstraction layers, portability, and reuse.
  • Develop software consistent with government reference architectures, customer technical baselines, and interoperability requirements.
  • Support MOSA-aligned implementations that enable extensibility, upgradeability, technology insertion, and integration of third-party, government-furnished, or externally developed components.
  • Develop and integrate software within Linux-based environments, including cross-compiled and embedded targets.
  • Contribute to software frameworks and implementations aligned to Common SDK, OCE, and CFE architectural concepts and reusable component strategies.
  • Define and implement clean internal and external interfaces for loosely coupled, component-oriented, service-oriented, and event-driven architectures.
  • Build, deploy, integrate, and troubleshoot software across multiple targets, lab environments, and platform configurations.
  • Support software deployment into edge/embedded environments and larger-scale compute infrastructures, including Big Iron processing environments.
  • Create and maintain unit, integration, and regression tests and improve automation and code coverage.
  • Support CI/CD pipelines for build, test, static analysis, security scanning, coverage, and artifact publication.
  • Collaborate with systems engineering, integration and lab teams, platform teams, and peer developers on feature delivery, architecture alignment, and defect resolution.
  • Produce technical documentation supporting verification, maintainability, transition to operations, and architectural compliance.
  • Provide technical leadership in software design, development best practices, secure coding, and architectural consistency across the team.
  • Support integration of software within broader platform and mission-system environments, ensuring alignment to system-level architecture, external interfaces, and government or customer reference architectures.
Desired Qualifications
  • 7+ years of professional C/C++ software development experience.
  • 5+ years of experience developing software for embedded real-time systems.
  • 5+ years supporting hardware/software integration and lab validation.
  • 3+ years of professional Rust software development experience.
  • 3+ years of experience in software architecture and design using UML and requirements-driven development.
  • 3+ years of experience with automated testing and CI tools such as CMake, GoogleTest, and Jenkins.
  • 3+ years of experience with build and dependency tools such as CMake and Conan.
  • Experience applying MOSA principles in defense, aerospace, electronic warfare, or other mission-critical systems.
  • Experience with Rust in performance-sensitive, embedded, safety-focused, or secure software applications.
  • Strong experience with Linux systems programming, cross-compilation, and deployment in distributed or embedded environments.
  • Experience with software architectures designed for interoperability, portability, reuse, and long-term sustainment.
  • Experience across Linux, Windows, and real-time operating system environments such as VxWorks or Real-Time Linux.
  • Domain knowledge in electronic warfare and radio-frequency or signal-processing environments.
  • Familiarity with government or Department of Defense architectural frameworks, platform reference architectures, and standards-driven integration approaches.
  • Familiarity with Common SDK, OCE, CFE, and reusable software framework integration strategies.
  • Experience supporting deployment or integration in high-performance computing, server-class, or Big Iron environments.
  • Familiarity with package repositories such as Artifactory; automated code quality and security checks including static analysis and code coverage; Black Duck tools for SAST/SCA; and UML/SysML modeling tools such as MagicDraw/Cameo.
  • Experience defining and managing software interfaces in support of open, extensible system designs.
  • Experience integrating software components into larger mission systems with attention to external interface compliance and architectural alignment.
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.