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L3Harris Technologies is the Trusted Disruptor in the defense industry. 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: Software Development Engineer in Test

Job Code: SQP5

Job Location: Washington DC (Hybrid)

Job Description:

Working at Trenchant means working alongside the best security researchers and product engineers from across the security research and intelligence communities. You will be engaged on the most challenging problems in the toughest environments and delivering solutions supporting the cutting edge of cyber security research. The primary work location is downtown Washington, DC adjacent to Metro Center. Infrequent travel to our Ottawa, London and Sydney offices in support of technical exchanges is highly encouraged. We require team members with an eye for security, to serve as key contributors on the Global Engineering Support team. The candidate must possess first-class System Engineering, Networking, and infosec skills and an eye for organization.

Trenchant is an elite global team of engineers and security researchers charged with building world-class computer security products. Trenchant’s expertise is the by-product of the L3Harris acquisition of two highly-regarded information security businesses – Azimuth Security and Linchpin Labs. United under Trenchant, we are a key component of L3Harris’ Cyber Division. We are a trusted, discrete partner furnishing security products, consultancy, training and integration services to allied security, defense, and law enforcement agencies.

Essential Functions:

Work with product teams to generate and document test requirements for custom cyber capabilities. Automate test cases for individual teams, act as subject matter expert on in-house frameworks, and contribute to globally shared Python test frameworks. Build new automations to manage mobile devices, VMs, and cloud infrastructure. Ability to work from the Washington DC office 2-3 days per week.

Qualifications:

Bachelor’s Degree and minimum 9 years of prior relevant experience. Graduate Degree and a minimum of 7 years of prior related experience. In lieu of a degree, minimum of 13 years of prior related experience. Excellent written and oral communication skills; comfortable asking questions when you don’t know. Demonstrated proficiency in at least one modern programming language (Python preferred). Demonstrated proficiency using common software development tools such as git, and Gitlab CI.

Preferred Additional Skills:

Advanced degree in Computer Science, Cybersecurity or a related field. Demonstrated ability to take ambiguous or incompletely defined problems and resolve them through consultation with appropriate stakeholders. Demonstrated a collaborative and team-oriented mindset for accomplishing goals and a bias to action. Substantial experience in CNO development/offensive cyber security. Has/had a TS clearance with ability to obtain SCI access. Experience working in an air-gapped development environment.

In compliance with pay transparency requirements, the salary range for this role is $114,000 to $212,000 USD. 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

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. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Engineering and Information Technology Industries Defense and Space Manufacturing Referrals increase your chances of interviewing at L3Harris Technologies by 2x Sign in to set job alerts for “Lead Software Engineer” roles. Software Engineering Operations Manager - Fully remote United States $105,230.00-$178,890.00 5 months ago Senior Software Engineer, Ad Engineering Washington, DC $119,700.00-$199,300.00 7 hours ago Senior Software Development Engineer (Type 2) Bethesda, MD $137,890.00-$218,190.00 1 month ago Homes.com - Team Lead, Software Engineering Software Development Engineer, Senior Leader Experiences - Executive Talent Management Sterling, VA $130,355.00-$221,603.00 2 days ago Senior Project Manager, Software Engineer and AI Washington, DC $163,200.00-$269,300.00 1 week ago 290 Software Engineer 3 (Senior Java Analytic Developer) Fort Meade, MD $185,000.00-$207,000.00 3 days ago Maryland, United States $135,000.00-$150,000.00 1 month ago Senior Lead Software Engineer, Full Stack Senior Manager Software Engineer, People Leader (Bank Tech) Chantilly, VA $112,320.00-$205,058.00 1 month ago Lead Software Engineering (Bank Modernization) Senior Manager, Software Engineer (Bank Tech) Senior CNO Software Engineer (TKO-SWE3-06.232025) Manager IC (Lead) Software Engineer, Back End (Bank Tech) Sr. Cyber Software Engr-Python- Antenna Collections Senior Ground Mission Software Engineer, Space Reston, VA $168,000.00-$252,000.00 2 weeks ago Senior Staff Perception Software Engineer, Sensor Fusion (R3473) Washington DC-Baltimore Area $220,800.00-$331,200.00 5 days ago Software Development Engineer II, Delivery Choice Senior Cyber Capability Developer (Reverse Engineer) Lorton, VA $126,100.00-$227,950.00 1 month ago Maryland, United States $129,029.52-$187,530.72 2 weeks ago Laurel, MD $90,000.00-$350,000.00 2 weeks ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

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