{"id":3352496,"url":"https://alion.io/job/threatdown-principal-software-engineer-macos-remote-eu","title":"Principal Software Engineer (MacOS) - Remote EU","company":{"id":687334,"name":"ThreatDown","domain":"threatdown.com","url":"https://alion.io/company/threatdown","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Rippling","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["DE","FR","GB","BE","IE","IT","PL","ES","UA","EE","PT"],"hiring_countries_total":11,"salary":null,"salary_estimate":{"min_usd":26000,"max_usd":76000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2257},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Objective-C","optional":false},{"name":"Defense in Depth","optional":true},{"name":"Least Privilege","optional":true},{"name":"Threat Modeling","optional":true}],"status":"live","first_seen_at":"2026-10-27T15:45:14Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-30T08:34:49Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"About ThreatDown\nThreatDown is a leader in elite Managed Detection and Response (MDR), purpose-built to empower resource-constrained security teams with high-efficacy protection, without the complexity. As attacks grow faster and more automated, ThreatDown pairs proprietary AI and threat research with analyst judgment to deploy in minutes to deliver high-efficacy protection. Recognized by MRG Effitas, AVLab, and G2, ThreatDown scales security operations to intercept sophisticated attacks at the speed of modern threats. At ThreatDown, you’ll join a team driven by innovation, resilience, and a passion for empowering businesses to thrive securely. If you're ready to make a real impact in cybersecurity, we’d love to meet you.\nThreatDown is looking for..\nWe’re not looking for people who know all the answers; we want people who can think creatively and are not afraid to bring forward new ideas. The problems we solve are meaningful, exciting, and constantly-evolving your code will support thousands of enterprises customers from emerging threats and restore confidence in using their computers. Our business product team is looking for a Principal Software Developer (MacOS), ready for the challenge of delivering great business products to thousands of users.\nCompensation:100,000 Euros\nWhat You Will Do:\nDevelop new and exciting products in the fight against malware\nBuild cutting edge Enterprise grade endpoint protection for MacOS\nPlay a key role in designing and developing tools to support all the ThreatDown initiatives\nCollect and process data and metrics to track emerging threats so we can keep one step ahead of the bad guys\nSupport your fellow developers; proactively communicate, document, unit-test, and peer review\nWork collaboratively and effectively with a range of people in an Agile environment\nCreate superior results while building new skills\nWork as a part of team to ensure everyone meets their goals\nSkills You'll Need to Have:\nUnderstanding of Object-Oriented development practices\nExperience working with Apple’s System Extensions and Network Extension frameworks\nAbility to work on a high-performance team in a high-tech startup or startup-like environment\nWorking knowledge of Swift and/or Objective-c coding languages\nExperience with backend development on macOS, including data management, networking, and system integrations\nAbility to debug and optimize macOS applications for performance\nFamiliarity with foundational macOS frameworks and development tools, including Foundation, Xcode, Instruments, and LLDB\nStrong understanding of macOS system architecture and internals\nFamiliarity with macOS security and distribution requirements, including code signing, entitlements, sandboxing, privacy permissions, and notarization\nAbility to debug, profile, and optimize macOS applications for performance, reliability, and resource efficiency\nGood To Have:\nUnderstanding of cybersecurity principles, including least privilege, defense in depth, secure-by-default design, threat modeling, and attack-surface reduction\nFamiliarity with secure coding practices, vulnerability management, and common application and network security risks\nFamiliarity with Apple platform deployment and management technologies, including MDM and configuration profiles\nPerks & Benefit:\nComprehensive medical, dental, and vision insurance coverage\nEmployee Referral Bonus Program\nWellness programs\nComprehensive Time Off policy\nAn opportunity to do something great for yourself and the world!\n(Benefits and Perks subject to change by country/region)","description_format":"text","description_chars":3562,"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":["Insurance coverage","Vision insurance","Wellness"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"},{"name":"France","iso":"FR","kind":"country"},{"name":"United Kingdom","iso":"GB","kind":"country"},{"name":"Belgium","iso":"BE","kind":"country"},{"name":"Ireland","iso":"IE","kind":"country"},{"name":"Italy","iso":"IT","kind":"country"},{"name":"Poland","iso":"PL","kind":"country"},{"name":"Spain","iso":"ES","kind":"country"},{"name":"Ukraine","iso":"UA","kind":"country"},{"name":"Estonia","iso":"EE","kind":"country"},{"name":"Portugal","iso":"PT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Endpoint Security"],"lifecycle":[{"event":"open","at":"2026-10-27T19:04:21Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":29,"reasons":["conf:1","velocity","win:early"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/threatdown-principal-software-engineer-macos-remote-eu","json_url":"https://alion.io/job/threatdown-principal-software-engineer-macos-remote-eu.json","meta":{"generated_at":"2026-10-30T09:24:00Z","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":13545,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":687334},"rest":"https://alion.io/mcp/rest/get_company?id=687334"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fthreatdown-principal-software-engineer-macos-remote-eu"},{"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%2Fthreatdown-principal-software-engineer-macos-remote-eu"},{"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%2Fthreatdown-principal-software-engineer-macos-remote-eu"},{"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/threatdown-principal-software-engineer-macos-remote-eu\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fthreatdown-principal-software-engineer-macos-remote-eu"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3352496}},{"tool":"search_jobs","arguments":{"company":"threatdown.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3352496},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}