{"id":2482162,"url":"https://alion.io/job/cylus-senior-backend-engineer","title":"Senior Backend Engineer","company":{"id":673990,"name":"Cylus","domain":"cylus.com","url":"https://alion.io/company/cylus","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":7,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tel Aviv, Israel"],"countries":["IL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":73000,"max_usd":214000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6933},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Docker","optional":false},{"name":"Go","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"TCP/IP","optional":false}],"status":"live","first_seen_at":"2025-11-18T11:01:14Z","employer_posted_date":"2025-11-18","last_verified_at":"2026-10-15T02:28:14Z","board_verified":true,"closed_at":null,"days_open":330,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":330},"description":"Cylus is a cybersecurity startup, led by world-class cyber experts. Our mission is to protect millions of people, worldwide, from cyber threats specific to modern trains, keeping them safe and on time.\nAbout Us\nCylus, the global leader in rail cybersecurity, helps mainline and urban railway companies prevent security incidents and service disruptions caused by cyber-attacks. With about $60M in funding by top VCs and strategic investors, global customers and strong partnerships with the biggest railway integrators, we make a significant impact on the multi-billion global railway industry. \nWe are looking for an exceptional Senior Backend Engineer to join our R&D team and help us get to the next level. If you have the right attitude and skills, we invite you to hop on board this bullet train. \nIn this role, you will: \nLead the design, development, and optimization of microservices tailored for the scalable processing of high volumes of network communication data.\nCollaborate with experienced engineers to architect distributed & scalable data processing solutions that backbone our Rail Tech Security Platform, CylusOne.\nCollaborate with the brightest network researchers to productize our cybersecurity threat detection & network analysis features.\nApply advanced software engineering principles to optimize code performance, scalability, and resource utilization across microservices & algorithms.\nDevelop in Go while leveraging a cutting-edge technology stack \nTruly have fun coming to work every day \nRequirements: \n6+ years of experience, specifically in building and maintaining scalable & complex software systems.\nProven track record of delivering large-scale, high-quality products\nTech-savvy, always up-to-date with best practices and latest technology developments\nProven ownership: thoughtful design, realistic estimates, and consistent delivery.\nProven experience in using and integrating AI into daily tasks\nLove to take on creative tasks, have end-to-end ownership, and work collaboratively to advance our mission and business goals \nAdvantages:\nStrong Linux and networking fundamentals (TCP/IP, sockets, latency/throughput basics).\nBachelor's degree in computer science, Electrical Engineering, or equivalent practical experience\nDeep understanding of Microservices and containerized environments (Docker/Kubernetes).\nExperience with Golang and c/c++\nExperience with cloud environments\nExperience working in Linux environment","description_format":"text","description_chars":2454,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","Rail Transport","Information Security"],"lifecycle":[{"event":"open","at":"2026-10-13T23:08:31Z"}],"visa":[],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.244,"p_room":0.28,"age_days":330,"expected_fill_days":31,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/cylus-senior-backend-engineer","json_url":"https://alion.io/job/cylus-senior-backend-engineer.json","meta":{"generated_at":"2026-10-15T06:29:19Z","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":9730,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":673990},"rest":"https://alion.io/mcp/rest/get_company?id=673990"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcylus-senior-backend-engineer"},{"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%2Fcylus-senior-backend-engineer"},{"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%2Fcylus-senior-backend-engineer"},{"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/cylus-senior-backend-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcylus-senior-backend-engineer"}]}