{"id":3960153,"url":"https://alion.io/job/bitdefender-c-software-developer-endpoint-security-windows","title":"C++ Software Developer – Endpoint Security Windows","company":{"id":11797,"name":"Bitdefender","domain":"bitdefender.com","url":"https://alion.io/company/bitdefendersrl","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":100,"open_postings":3,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":57,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bucharest, Romania"],"countries":["RO"],"hiring_countries":["RO"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"WinDbg","optional":false},{"name":"Windows","optional":false},{"name":"Assembly","optional":true},{"name":"PowerShell","optional":true},{"name":"Python","optional":true},{"name":"Rust","optional":true}],"status":"live","first_seen_at":"2026-11-09T07:51:36Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-09T11:07:11Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide. Guardian over millions of consumer, enterprise, and government environments, Bitdefender is one of the industry’s most trusted experts for eliminating threats, protecting privacy, digital identity and data, and enabling cyber resilience. With deep investments in research and development, Bitdefender Labs discovers hundreds of new threats each minute and validates billions of threat queries daily. The company has pioneered breakthrough innovations in antimalware, IoT security, behavioral analytics, and artificial intelligence and its technology is licensed by more than 180 of the world’s most recognized technology brands. Founded in 2001, Bitdefender has customers in 170+ countries with offices around the world. For more information, visit https://www.bitdefender.com\nAbout the role\nWe are looking for a C++ Software Developer to join Bitdefender's Endpoint Security Windows team.\nYou will work on the Windows endpoint security product, developing and maintaining components that run on millions of endpoints and integrate multiple security technologies into a single product.\nThe role involves both developing new functionality and working with an established, complex codebase where performance, reliability, security, and compatibility are essential.\nYou will have the opportunity to work close to the Windows operating system, investigate complex real-world problems, and collaborate with multiple engineering teams responsible for different security technologies.\nWhat you'll do\nDesign, develop, maintain, and improve C++ components running on Windows.\n\nIntegrate security technologies and components developed by other Bitdefender teams into the Endpoint Security product.\n\nDesign and implement Windows services, processes, libraries, and supporting components.\n\nWork with Windows APIs and operating-system-level functionality.\n\nInvestigate and resolve complex issues involving performance, memory, concurrency, networking, operating system behavior, and interactions between product components.\n\nDebug problems using tools such as Visual Studio, WinDbg, Windows Performance Analyzer (WPA), ETW, and other Windows diagnostic tools.\n\nAnalyze crashes, hangs, memory corruption, performance regressions, and other problems occurring in production environments.\n\nDesign reliable solutions involving multithreading, synchronization and inter-process communication.\n\nParticipate in technical and architectural discussions and propose improvements to existing components.\n\nWrite clean, maintainable, testable, and efficient code.\n\nPerform code reviews and contribute to improving engineering practices within the team.\n\nCollaborate with QA, product management, and other engineering teams throughout the development lifecycle.\n\nContinuously learn about new Windows capabilities, security technologies, development tools, and programming languages.\n\nWhat we're looking for\nStrong knowledge of C++ and experience developing production software.\n\nGood knowledge of modern C++ and the C++ Standard Library.\n\nGood understanding of:\nobject-oriented programming and software design;\n\ndata structures and algorithms;\n\nmemory management;\n\nmultithreading;\n\nsynchronization primitives;\n\ninter-process communication.\n\nExperience developing software for Microsoft Windows.\n\nGood knowledge of the Windows API (Win32) and Windows system programming concepts.\n\nGood understanding of operating-system concepts such as:\nprocesses and threads;\n\nvirtual memory;\n\nfiles and I/O;\n\nservices;\n\nsynchronization;\n\nCPU and storage behavior.\n\nStrong debugging and troubleshooting skills.\n\nAbility to investigate complex problems methodically, including problems that cannot be easily reproduced locally.\n\nBasic understanding of computer networking and common network protocols.\n\nGood software architecture and design skills.\n\nGood written and verbal communication skills.\n\nAbility to collaborate effectively with engineers from different teams.\n\nNice to have\nExperience in one or more of the following areas is a plus:\nWindows internals.\n\nWinDbg and crash dump analysis.\n\nETW, Windows Performance Recorder and Windows Performance Analyzer.\n\nWindows kernel or driver development.\n\nNetwork programming and Windows networking APIs.\n\nCybersecurity or endpoint security products.\n\nWindows Firewall / Windows Filtering Platform.\n\nTLS, certificates and cryptography.\n\nSoftware deployment, installation and update technologies.\n\nPerformance profiling and optimization.\n\nPython or PowerShell scripting.\n\nRust.\n\nLarge-scale software products with long-lived codebases and strong backward-compatibility requirements.\n\nWhat you can expect\nYou will join a team working on technically challenging problems at the intersection of C++, Windows internals and cybersecurity.\nThe role provides opportunities to work on both high-level product architecture and low-level technical problems, from designing new components to analyzing crashes, performance problems and operating-system interactions occurring on real customer machines.\nYou will collaborate with experienced engineers across Bitdefender and contribute directly to the reliability, performance and security of the Endpoint Security product.","description_format":"text","description_chars":5291,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Romania","iso":"RO","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Endpoint 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