{"id":1969861,"url":"https://alion.io/job/darwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam","title":"162L - macOS Systems & Security Engineer (Swift/Objective-C/C++) · Senior · Remote · LATAM","company":{"id":61145,"name":"Darwoft","domain":"darwoft.com","url":"https://alion.io/company/darwoft","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"Security","role_family":"Security","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":["AR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":48000,"max_usd":111000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2372},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Objective-C","optional":false},{"name":"Rest API","optional":false},{"name":"IAM","optional":true}],"status":"live","first_seen_at":"2026-10-06T18:55:14Z","employer_posted_date":"2026-10-06","last_verified_at":"2026-10-28T19:23:48Z","board_verified":true,"closed_at":null,"days_open":22,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":22},"description":"Principal macOS Systems & Security Engineer (Swift/Objective-C/C++) · LATAM\nLocation: Anywhere in LATAM\nWork Model: 100% Remote\nEngagement: Full-time Contractor\nProject: Cybersecurity / Identity & Endpoint Security\nEnglish Level: B2 / C1\nGet to Know Darwoft\nAt Darwoft, we build custom software solutions and partner with international companies to create high-impact digital products.\nWe are a Latin American technology company with a people-first culture, strong professional standards, and a long-term partnership mindset. We work with distributed teams, complex technical challenges, and clients whose technology has a direct impact on their businesses and users.\nAbout the Role\nWe're looking for a Principal macOS Systems & Security Engineer to join an international cybersecurity project focused on identity assurance, authentication, and enterprise endpoint security.\nThis is not a traditional macOS application development role.\nYou'll work much closer to the operating system, designing and evolving security-sensitive components that integrate deeply with macOS. The role involves systems programming, privileged processes, authentication, secure communication between components, cryptography, and enterprise endpoint deployment.\nWe're looking for someone who combines strong software engineering fundamentals with deep knowledge of macOS internals and native security frameworks, and who is comfortable solving complex problems where reliability and security are critical.\nAs a Principal Engineer, you'll operate as a senior individual contributor, influencing architecture and technical direction while collaborating with Engineering, Security, Product, and other technical stakeholders.\nWhat You'll Be Doing\nDesign, build, and evolve low-level software components running on macOS.\nDevelop security-sensitive functionality related to authentication, identity, and endpoint protection.\nWork with native macOS technologies including XPC, Launch Agents, Launch Daemons, Keychain, Authorization Services, and System Extensions.\nBuild and maintain privileged services and secure communication between application and system-level components.\nContribute to integrations with the Apple Endpoint Security Framework and other native security mechanisms.\nDesign software using Swift, Objective-C, C, and C++, depending on the component and technical requirements.\nDevelop and maintain authentication and credential-related capabilities.\nWork with technologies and concepts such as FIDO2, WebAuthn, Passkeys, PAM, CryptoTokenKit, and certificate management.\nApply secure coding principles and cryptographic concepts when implementing authentication and identity workflows.\nTroubleshoot complex production issues using logs, diagnostics, debugging tools, and system-level analysis.\nDesign software capable of operating reliably across large enterprise endpoint environments.\nHandle challenges related to installers, code signing, entitlements, permissions, upgrades, and enterprise software distribution.\nContribute to architectural decisions and technical standards for macOS platform components.\nResearch new Apple APIs, operating system changes, and security mechanisms.\nMentor engineers and provide technical guidance on complex platform-level problems.\nCollaborate with backend and platform teams on secure communication through REST APIs, HTTP/HTTPS, and network protocols.\nWhat You Bring\nExtensive professional software engineering experience, ideally 10+ years, with significant hands-on work on macOS or similar systems-level environments.\nDeep understanding of macOS internals, operating system behavior, processes, permissions, and security architecture.\nStrong programming experience with Swift and/or Objective-C, combined with solid knowledge of C/C++.\nHands-on experience developing software beyond the traditional application layer.\nExperience with macOS technologies such as:XPC\nLaunch Agents\nLaunch Daemons\nKeychain Services\nAuthorization Services\nSystem Extensions\n\nStrong knowledge of inter-process communication and privileged operations.\nExperience debugging and troubleshooting complex system-level software.\nUnderstanding of authentication, identity, and secure credential management.\nSolid knowledge of networking concepts including REST APIs, HTTP/HTTPS, and TCP communication.\nUnderstanding of applied cryptography and common cryptographic primitives.\nExperience building reliable software distributed across enterprise environments.\nStrong ownership, autonomy, and ability to make architectural decisions.\nStrong written and verbal communication skills in English.\nNice to Have\nExperience with the Apple Endpoint Security Framework.\nExperience with CryptoTokenKit or PAM modules.\nKnowledge of FIDO2, WebAuthn, or Passkeys.\nExperience with passwordless authentication or Identity Security products.\nExperience building endpoint security, EDR, IAM, device management, or enterprise security products.\nKnowledge of cryptographic algorithms and concepts such as RSA, Elliptic Curve cryptography, Diffie-Hellman, and AES.\nExperience with certificate management.\nExperience with enterprise macOS deployment and device management environments.\nKnowledge of installers, package distribution, code signing, entitlements, and macOS application lifecycle management.\nExperience modernizing Objective-C components toward Swift.\nPrevious experience operating as a Principal or Staff-level Individual Contributor.\nWhat Darwoft Offers\nContractor agreement with payment in USD\n100% remote work\nArgentina's public holidays\nEnglish classes\nReferral program\nAccess to learning platforms\nExplore this and other opportunities at:\nwww.darwoft.com/careers","description_format":"text","description_chars":5662,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Argentina","iso":"AR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Mobile App Development Services","Web Development Services","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-06T18:55:14Z"}],"visa":[],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":1,"p_active":0.429,"p_room":0.35,"age_days":21,"expected_fill_days":4,"reasons":["conf:0","velocity","win:tail"],"computed_at":"2026-10-28T05:59:10Z"},"pay":null,"html_url":"https://alion.io/job/darwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam","json_url":"https://alion.io/job/darwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam.json","meta":{"generated_at":"2026-10-28T19:45:22Z","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":27392,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"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":61145},"rest":"https://alion.io/mcp/rest/get_company?id=61145"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdarwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam"},{"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%2Fdarwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam"},{"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%2Fdarwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam"},{"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/darwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdarwoft-162l-macos-systems-security-engineer-swiftobjective-cc-senior-remote-latam"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1969861}},{"tool":"search_jobs","arguments":{"company":"darwoft.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1969861},"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"}}