{"id":61401,"url":"https://alion.io/job/zscaler-principal-software-development-engineer-golangpython-networking","title":"Principal Software Development Engineer - Golang/Python + Networking","company":{"id":1208,"name":"Zscaler","domain":"zscaler.com","url":"https://alion.io/company/zscaler","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":84,"open_postings":54,"ghost_share":0.019,"stale_share":0.556,"repost_share":0.037,"time_to_fill_p50_days":47,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Bengaluru, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":27000,"max_usd":63000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":57},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"BGP","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Linux","optional":false},{"name":"OSPF","optional":false},{"name":"Python","optional":false},{"name":"Zero Trust","optional":false},{"name":"Zscaler","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"Docker","optional":true},{"name":"FedRAMP","optional":true},{"name":"Kubernetes","optional":true}],"status":"live","first_seen_at":"2026-08-18T03:33:52Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-18T06:42:38Z","board_verified":true,"closed_at":null,"days_open":61,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":61},"description":"Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform.\nWe believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler.\n\nRole \nWe are looking for a Principal Software Development Engineer to join our team. This is a hybrid role based in Bangalore,India reporting to the Director, Software Engineering in the Engineering department. You will join the team that built the world’s largest cloud security platform from the ground up, enabling organizations worldwide to harness speed and agility with a cloud-first strategy. With more than 100 patents and 15 million users across 185 countries, you will bring your vision to a team of experts dedicated to enhancing our multitenant architecture and global footprint.\nWhat you’ll do (Role Expectations)\nDesigning, developing, and optimizing high-performance network system architecture and security features to support mission-critical applications\nPartnering with Engineering Architects, Product Managers, Solution Architects, and customers to understand complex use cases and review PRDs\nAuthoring design and functional specifications while driving unit testing and automation to ensure high product quality\nCollaborating across cross-functional teams to resolve system-level issues, optimize data path performance, and drive feature innovation\nApplying advanced software design principles and troubleshooting expertise to coach junior team members and maintain compliance with federal security certifications\nWho You Are (Success Profile)\nYou thrive in ambiguity, easily building the path as you walk it and transforming dynamic challenges into meaningful, scalable solutions.\nYou act like an owner with a strong bias for action, operating with integrity while moving seamlessly between high-level strategy and hands-on execution.\nYou are a problem-solver who is energized by finding solutions to complex technical challenges that drive maximum impact.\nYou are a high-trust collaborator who is ambitious for the team, fostering continuous growth through open, candid, and respectful feedback.\nYou are a learner with a growth mindset, actively seeking feedback and exploring new technologies to continuously elevate yourself and your partners.\nWhat We’re Looking for (Minimum Qualifications)\nDemonstrated curiosity and active exploration of AI tools, with a proven history of integrating new technologies to enhance daily workflows and augment problem-solving\nBachelor's or Master's degree in Computer Science or a related field with 10+ years of experience in system engineering for high-performance networking\nExpertise in Linux kernel-based networking (L2/L3), stateful firewalls, NAT, network drivers, routing protocols (BGP, OSPF, PIM), and protocols like VLANs, DHCP, DNS, SSL, DTLS, QUIC, IPsec, GRE, and WireGuard\nProficiency in Go and Python programming languages with strong problem-solving skills for debugging complex data path issues\nStrong communication and collaboration skills to design scalable systems effectively in a high-accountability environment\nWhat Will Make You Stand Out (Preferred Qualifications)\nExperience integrating AI/ML frameworks or intelligent data path analysis models to optimize kernel-level networking performance and automate predictive threat detection\nExperience with WireGuard, tunneling protocols (GRE, L2VPN), HA protocols (VRRP), alongside certifications like FIPS or FedRAMP and prior experience with TLS, DTLS, and QUIC\nFamiliarity with cloud computing platforms (AWS or Azure), containerization technologies (Docker, Kubernetes), and advanced virtualization or security solutions\n#LI-Hybrid #LI-AN4\nAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.\nOur Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:\nVarious health plans\nTime off plans for vacation and sick time\nParental leave options\nRetirement options\nEducation reimbursement\nIn-office perks, and more!\nLearn more about Zscaler's hybrid working model and benefits here.\nBy applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines.\nZscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.\nPay Transparency\nZscaler complies with all applicable federal, state, and local pay transparency rules.\nZscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.","description_format":"text","description_chars":6557,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Hybrid work","Parental leave"],"hiring_locations":[{"name":"India","iso":"IN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","Cloud Security"],"lifecycle":[{"event":"open","at":"2026-08-18T03:33:52Z"}],"visa":[],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":1,"p_active":0.466,"p_room":0.44,"age_days":60,"expected_fill_days":47,"reasons":["conf:0","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/zscaler-principal-software-development-engineer-golangpython-networking","json_url":"https://alion.io/job/zscaler-principal-software-development-engineer-golangpython-networking.json","meta":{"generated_at":"2026-10-18T09:49:46Z","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":14498,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":1208},"rest":"https://alion.io/mcp/rest/get_company?id=1208"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fzscaler-principal-software-development-engineer-golangpython-networking"},{"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%2Fzscaler-principal-software-development-engineer-golangpython-networking"},{"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%2Fzscaler-principal-software-development-engineer-golangpython-networking"},{"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/zscaler-principal-software-development-engineer-golangpython-networking\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fzscaler-principal-software-development-engineer-golangpython-networking"}]}