{"id":1609715,"url":"https://alion.io/job/l3harris-technologies-senior-software-engineer-autonomy-maritime-systems","title":"Senior Software Engineer (Autonomy & Maritime Systems)","company":{"id":177017,"name":"L3Harris Technologies","domain":"l3harris.com","url":"https://alion.io/company/l3harris-technologies","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":{"grade":"A","score":100,"open_postings":31,"ghost_share":0,"stale_share":0,"repost_share":0.065,"time_to_fill_p50_days":20,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Fareham, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":71000,"max_usd":138000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":139},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"GitLab","optional":false},{"name":"Linux","optional":false},{"name":"Qt","optional":false}],"status":"live","first_seen_at":"2026-09-15T00:00:00Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-11-02T11:11:21Z","board_verified":true,"closed_at":null,"days_open":48,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":48},"description":"Job Title - Senior Software Engineer (Autonomy & Maritime Systems)\nJob Location - Portchester, UK\nJob ID - 44405\nAbout this opportunity and L3Harris UK\nOperating at 10 sites in the United Kingdom, L3Harris supports Britain's mission to secure and strengthen the country by delivering sovereign innovation across the space, air, land, sea and cyber domains.\nL3Harris in Portchester ispart of our Maritime UK business - a leading global supplier of integrated marine control systems and simulation products for warships, submarines and high-end commercial marine vessels worldwide. Our Maritime UK business has 4 UK locations and together we are powering the Royal Navy’s adoption of autonomous surface vehicle technology as well as delivering autonomous capability to UK ports, harbours and offshore energy service providers.\nJoin our Maritime Global Systems team and play a key role in delivering next-generation digital maritime solutions across vessels and offshore assets worldwide. We are seeking a highly skilled Senior Software Engineer with proven expertise in C++ software development, software architecture, and maritime autonomy systems. The successful candidate will provide technical leadership for the design, development, integration, and support of advanced autonomous and embedded software solutions across multiple strategic maritime programmes.\nA few of our employee benefits are:\nHybrid working where possible, three days onsite per week\nFlexible or part-time working arrangements considered upon request\nHalf day finish on a Friday\n25 days holiday per year (plus bank holidays), increasing with long service and with the opportunity to buy/sell up to 5 days \nPrivate medical insurance with optional family cover\nPension scheme of up to 8% employer contribution\nLife Assurance 4x salary (flexible up to 10x) \nGroup income protection\nFlexible opt-in extras such as a health care cash plan, dental insurance, gym membership, critical illnesscover, cycle to work scheme, travel insurance and electric car scheme\nEmployee Family Assistance Program providing mental health and wellbeing support \nProfessional membership reimbursement (discretionary) \n\nWhat the role will involve\nThe responsibilities of your role will include the following:\nLead the design, development, and architecture of high-performance C++ applications for autonomous maritime systems. \nProvide technical leadership and mentorship to software engineers, promoting best practices in software design, code quality, and system integration. \nCollaborate with systems engineering, UX, QA, product management, and external partners to deliver high-quality software solutions. \nDrive Agile software development activities, including sprint planning, reviews, retrospectives, and continuous improvement initiatives. \nUtilise JIRA, GitLab, and CI/CD pipelines to manage development activities and ensure reliable software delivery. \nOversee and contribute to Qt-based UI development for mission-critical operator interfaces. \nEnsure software solutions are robust, scalable, secure, maintainable, and supportable throughout the product lifecycle. \nSupport development, integration, deployment, and DevOps activities within Linux (RHEL 8) environments.\nWhat you’ll bring\nThe role requires the following experience and skills:\nBachelor’s degree in Computer science, Software Engineering, or equivalent practical experience. \nMinimum 5 years of professional experience in C++ software development, including embedded or real-time systems. \nProven experience providing technical leadership within Agile and DevSecOps environments. \nDemonstrated ability to design and deliver complex, high-reliability software systems. \nStrong Linux and Git-based development experience. \nExperience with modern software development workflows and CI/CD practices. \nStrong communication, collaboration, and stakeholder engagement skills.\nPreferred Additional Skills:\nExperience with the Qt framework for GUI development. \nKnowledge of DevOps tools, build automation, and CI/CD pipelines. \nExperience with autonomous systems and maritime software applications. \nUnderstanding of UX principles and user-centred design. \nExperience supporting IRAD, R&D, or innovation-focused development programmes. \nFamiliarity with embedded systems, sensor integration, and mission management software.\nImportant to know\nApplicants who accept a conditional offer of employment must meet the requirement of right to work in the UK and must meet eligibility requirements for access to classified information and will be subject to government security checks.\n#LI-Hybrid","description_format":"text","description_chars":4604,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[]},"benefits":["Dental insurance","Gym membership","Health insurance","Hybrid work"],"hiring_locations":[{"name":"United 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