{"id":2766024,"url":"https://alion.io/job/persistent-systems-senior-network-security-software-engineer-2","title":"Senior Network Security Software Engineer","company":{"id":59479,"name":"Persistent Systems","domain":"persistent.com","url":"https://alion.io/company/persistent-systems","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Zwayam","truth_index":{"grade":"B","score":75,"open_postings":17,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pune, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":17000,"max_usd":37000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":11},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Linux","optional":false},{"name":"PKI","optional":false},{"name":"TCP/IP","optional":false},{"name":"Valgrind","optional":false},{"name":"Wireshark","optional":false},{"name":"C","optional":true}],"status":"live","first_seen_at":"2026-09-02T09:58:31Z","employer_posted_date":"2026-10-17","last_verified_at":"2026-10-17T10:44:57Z","board_verified":true,"closed_at":null,"days_open":45,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":45},"description":"About Persistent\nWe are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients anticipate what's next. Our offerings and proven solutions create a unique competitive advantage for our clients by giving them the power to see beyond and rise above. We work with many industry-leading organizations across the world, including 20 Fortune 50 companies and 4 of the 5 top banks in both the US and India, and numerous innovators across the healthcare ecosystem.\nOur disruptor's mindset, commitment to client success, and agility to thrive in the dynamic environment have enabled us to sustain our growth momentum. Persistent has been recognized across top industry platforms for innovation, leadership, and inclusion. We reported $1,654.4M FY26 revenue with 17.4% Y-o-Y growth. We have delivered 24 sequential quarters of growth with $436.0M in Q4 FY26 revenue, up 3.2% Q-o-Q and 16.2% Y-o-Y growth. Our 27,500+ global team members, located in 18 countries, have been instrumental in helping the market leaders transform their industries.\nAbout Position:\nWe are seeking a highly experienced Senior Firewall/Network Security Software Engineer with 8+ years of expertise in C/C++ development for Linux and embedded systems. The role focuses on designing and developing next-generation firewall (NGFW) and cybersecurity solutions, including high-performance packet processing, network security, authentication systems, and advanced threat protection. The ideal candidate will have deep knowledge of networking protocols, security architectures, and scalable system design.\nRole: Senior Network Security Software Engineer\nLocation: Pune\nExperience: Between 8 to 15 Years\nJob Type: Full Time Employment\nWhat You'll Do:\nDesign and develop control-plane and data-plane components for next-generation Firewall (NGFW) platforms across Layers 3?7.\nBuild high-performance packet processing and traffic management systems using multi-core architectures such as DPDK and ODP.\nDevelop and maintain management interfaces including CLI, APIs, SSH access, logging, diagnostics, and telemetry frameworks.\nImplement and enhance security technologies including SSL/TLS, IPSec, SAML, PKI, and certificate lifecycle management.\nDevelop cybersecurity features such as Deep Packet Inspection (DPI), Intrusion Prevention Systems (IPS), malware protection, URL filtering, and content categorization.\nArchitect scalable, secure, and highly available solutions with clustering, HA, licensing, and secure coding best practices.\nOptimize system performance and troubleshoot complex networking and security issues using tools such as GDB, Wireshark, and Valgrind.\nCollaborate with cross-functional engineering teams on architecture, security, product enhancements, and vulnerability remediation.\nExpertise You'll Bring:\n8+ years of hands-on experience in C/C++ systems programming on Linux or embedded platforms.\nStrong understanding of networking protocols across L3-L7, including TCP/IP, routing, switching, SSL/TLS, and IPSec.\nExtensive experience in data-plane development and packet processing optimization.\nDeep knowledge of Linux internals, multithreading, concurrency, and high-performance application development.\nExperience developing CLI tools, APIs, telemetry solutions, logging frameworks, and SSH-based management interfaces.\nStrong understanding of security architecture, authentication mechanisms, PKI, and certificate management.\nHands-on experience with Firewall, NGFW, DPI, IPS, malware protection, and web/content filtering technologies.\nExcellent debugging, troubleshooting, and performance tuning skills.\nProven ability to design scalable systems and provide technical leadership.\nExpert-level C/C++ programming and systems development expertise.\nDeep understanding of cybersecurity and firewall technologies.\nStrong experience with packet processing frameworks such as DPDK/ODP.\nAdvanced knowledge of Linux and embedded operating systems.\nExpertise in network security protocols, authentication, and encryption technologies.\nAbility to architect secure, scalable, and highly available networking solutions.\nStrong analytical and problem-solving capabilities in complex real-time environments.\nLeadership skills with the ability to mentor engineers and drive technical discussions.\nBenefits:\nCompetitive salary and benefits package\nCulture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certifications\nOpportunity to work with cutting-edge technologies\nEmployee engagement initiatives such as project parties, flexible work hours, and Long Service awards\nAnnual health check-ups\nInsurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents\nValues-Driven, People-Centric & Inclusive Work Environment:\nPersistent is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals, including those with disabilities, and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.\nWe support hybrid work and flexible hours to fit diverse lifestyles.\nOur office is accessibility-friendly, with ergonomic setups and assistive technologies to support employees with physical disabilities.\nIf you are a person with disabilities and have specific requirements, please inform us during the application process or at any time during your employment.\nLet's unleash your full potential at Persistent - persistent.com/careers\n\"Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.\"","description_format":"text","description_chars":5730,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Growth opportunities","Hybrid work","Insurance coverage"],"hiring_locations":[{"name":"India","iso":"IN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","Artificial Intelligence","Health Care","Information Technology"],"lifecycle":[{"event":"open","at":"2026-10-17T03:59:24Z"}],"visa":[],"liveness":{"score":20,"band":"cold","label":"Long shot","p_open":1,"p_active":0.447,"p_room":0.45,"age_days":44,"expected_fill_days":26,"reasons":["conf:1","stale_co","velocity","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/persistent-systems-senior-network-security-software-engineer-2","json_url":"https://alion.io/job/persistent-systems-senior-network-security-software-engineer-2.json","meta":{"generated_at":"2026-10-17T10:49:02Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":14173,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":59479},"rest":"https://alion.io/mcp/rest/get_company?id=59479"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpersistent-systems-senior-network-security-software-engineer-2"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fpersistent-systems-senior-network-security-software-engineer-2"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fpersistent-systems-senior-network-security-software-engineer-2"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/persistent-systems-senior-network-security-software-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpersistent-systems-senior-network-security-software-engineer-2"}]}