{"id":730368,"url":"https://alion.io/job/sigmadefense-1710-software-engineer-ii","title":"1710 - Software Engineer II","company":{"id":685779,"name":"Sigma Defense Systems","domain":"sigmadefense.com","url":"https://alion.io/company/sigmadefense","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":100,"open_postings":17,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":13,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Huntsville, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":43,"max":null,"currency":"USD","period":"hour","gross":null,"usd_annual":86000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"C++","optional":false},{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"gRPC","optional":false},{"name":"JavaScript","optional":false},{"name":"Linux","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Qt","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"TCP/IP","optional":false},{"name":"TypeScript","optional":false},{"name":"Vue.js","optional":false},{"name":"WebSockets","optional":false}],"status":"live","first_seen_at":"2026-10-27T15:25:09Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-31T09:20:13Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":3},"description":"Sigma Defense is seeking a Software Engineer II to join our team developing software solutions for communications, tactical, and hardware-integrated systems. This role involves a combination of desktop application development, web application development, backend services, hardware integration, and system testing.\nThe ideal candidate enjoys solving technical challenges, learning new technologies, and working across multiple disciplines. This position offers opportunities to develop desktop and web-based applications, integrate software with hardware systems, support customer demonstrations, and participate in field testing activities.\nEqual Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nRequirements\n3-4 years of software development experience (professional, internship, academic, or personal project experience considered).\nExperience with object-oriented software development principles.\nUnderstanding of networking fundamentals and TCP/IP communications.\nExperience using Git or similar version control systems.\nStrong analytical, troubleshooting, and problem-solving skills.\nAbility to learn new technologies and adapt to evolving project requirements.\nStrong written and verbal communication skills.\nAbility to work independently and collaboratively within a small engineering team.\nAbility to travel up to 15% of year.\nMust be a U.S. citizen.\nCandidate Differentiators:\nExperience with Qt and desktop application development.\nExperience developing web applications using Angular, React, Vue, or similar frameworks.\nExperience developing REST APIs and backend services.\nExperience with PostgreSQL, SQL databases, or database design.\nExperience with gRPC and Protocol Buffers.\nExperience with WebSockets and real-time data streaming.\nExperience with Docker or containerized deployments.\nExperience developing TCP/UDP network applications.\nExperience working with geospatial technologies or mapping applications.\nExperience programming embedded systems, microcontrollers, or Arduino-based devices.\nExperience integrating software with hardware devices and external systems.\nExperience with Team Awareness Kit (TAK) technologies, including ATAK, WinTAK, TAK Server, and Cursor-on-Target (CoT) is preferred.\nComputer Programs/Software:\nC++\nPython\nJavaScript\nTypeScript\nLinux\nPersonnel Clearance Level:\nCandidate must possess or have the ability to obtain an active Secret security clearance or higher.\nClearance may be sponsored for the right candidate.\nEducation Requirements:\nBachelor's degree from an accredited college or university in Computer Science, Computer Engineering, Software Engineering, Electrical Engineering, or related field of study.\nEssential Job Duties (not all-inclusive):\nDesign, develop, test, and maintain desktop and web-based software applications.\nDevelop and maintain software using C++, Python, JavaScript, TypeScript, and related technologies.\nDevelop desktop applications using frameworks such as Qt.\nDevelop and maintain modern web applications using frameworks such as Angular, React, or similar technologies.\nDesign and implement backend services, REST APIs, and real-time communication interfaces.\nDevelop and maintain client/server applications utilizing TCP/IP, UDP, WebSockets, gRPC, and related communication technologies.\nIntegrate software with hardware devices, sensors, and external systems.\nDevelop and maintain Protocol Buffer message definitions and communication interfaces.\nSupport database-driven applications and data visualization tools.\nTroubleshoot and resolve software defects throughout the development lifecycle.\nDevelop technical documentation, interface control documents (ICDs), user guides, and test procedures.\nParticipate in software architecture discussions, design reviews, and technical planning activities.\nSupport customer demonstrations, field testing, system integration activities, and operational evaluations.\nHourly Rate: $43.27 per hour.\nBenefits\nDental and Vision Insurance\nMedical Insurance to Include HSA, FSA, and DFSA Plans\nLife and AD&D coverage\nEmployee Assistance Program (EAP)\n401(k) Plan with Company Matching Contributions\n160 Hours of Paid Time Off (PTO) \n12 (Floating) Holidays\nEducational Assistance\nHighly Competitive 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