Senior Software Engineer - Android Systems & Security

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  "active_status": "active"
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  "location": {
    "raw": "San Francisco, CA",
    "city": "San Francisco",
    "region": "CA",
    "country": "United States",
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    "countries": [
      "United States"
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  "remote_policy": "hybrid",
  "salary_period": "year",
  "workplace_type": "hybrid",
  "salary_currency": "USD"
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{
  "lists": [
    {
      "text": "Responsibilities",
      "content": "<div>\n\n<li>\n<p>Framework Engineering: Develop and maintain custom modifications within the Android Framework (AOSP) and Hardware Abstraction Layers (HAL).</p>\n</li>\n<li>\n<p>OEM Integration: Partner with global smartphone manufacturers and chipset vendors to integrate PayJoy’s proprietary technology into factory firmware.</p>\n</li>\n<li>\n<p>Cross-Border Collaboration: Work daily with our China-based engineering team to align on technical specifications and manufacturing requirements.</p>\n</li>\n<li>\n<p>Feature Development: Implement new locking features that interact with system-level services for example Telephony, Power Management, and Device Policy Manager, etc…</p>\n</li>\n<li>\n<p>R&amp;D &amp; Debugging: Use deep chip-level knowledge to troubleshoot integration issues across different silicon providers (Qualcomm, MediaTek, etc.).</p>\n</li>\n<li>\n<p>Process Automation: Contribute to OTA (Over-the-Air) updates and global device testing.</p>\n</li>\n\n</div>"
    },
    {
      "text": "Requirements",
      "content": "<div>\n<ul data-path-to-node=\"14\">\n<li>\n<p data-path-to-node=\"14,0,0\" id=\"p-rc_8d35db773b1c9097-155\"><span data-path-to-node=\"14,0,0,0\"><strong data-path-to-node=\"14,0,0,0\" data-index-in-node=\"0\">Android Internals Expertise:</strong> Extensive, hands-on experience with AOSP development, including modifying system services and utilizing the Android build system (Soong/Make)</span><span data-path-to-node=\"14,0,0,1\"><sup></sup></span><span data-path-to-node=\"14,0,0,2\">.</span> </p>\n</li>\n<li>\n<p data-path-to-node=\"14,1,0\" id=\"p-rc_8d35db773b1c9097-156\"><span data-path-to-node=\"14,1,0,0\"><strong data-path-to-node=\"14,1,0,0\" data-index-in-node=\"0\">Low-Level Language Mastery:</strong> Expert-level proficiency in <strong data-path-to-node=\"14,1,0,0\" data-index-in-node=\"56\">Java and C/C++ (JNI)</strong></span><span data-path-to-node=\"14,1,0,1\"><sup></sup></span><span data-path-to-node=\"14,1,0,2\">. (Ability to read/write Kotlin is expected, but core work remains at the system level)</span><span data-path-to-node=\"14,1,0,3\"><sup></sup></span><span data-path-to-node=\"14,1,0,4\">.</span> </p>\n</li>\n<li>\n<p data-path-to-node=\"14,2,0\" id=\"p-rc_8d35db773b1c9097-157\"><span data-path-to-node=\"14,2,0,0\"><strong data-path-to-node=\"14,2,0,0\" data-index-in-node=\"0\">OEM/Firmware Background:</strong> Proven experience working with or for an OEM or chipset vendor on firmware customization, device bring-up, or security hardening</span><span data-path-to-node=\"14,2,0,1\"><sup></sup></span><span data-path-to-node=\"14,2,0,2\">.</span> </p>\n</li>\n<li>\n<p data-path-to-node=\"14,3,0\" id=\"p-rc_8d35db773b1c9097-158\"><span data-path-to-node=\"14,3,0,0\"><strong data-path-to-node=\"14,3,0,0\" data-index-in-node=\"0\">Strong Core Skills:</strong> Demonstrable knowledge of <strong data-path-to-node=\"14,3,0,0\" data-index-in-node=\"46\">AOSP and TEE / ARM TrustZone</strong></span><span data-path-to-node=\"14,3,0,1\"><sup></sup></span><span data-path-to-node=\"14,3,0,2\">.</span> </p>\n</li>\n<li>\n<p data-path-to-node=\"14,4,0\" id=\"p-rc_8d35db773b1c9097-159\"><span data-path-to-node=\"14,4,0,0\"><em data-path-to-node=\"14,4,0,0\" data-index-in-node=\"0\">⚠️ Note:</em> If your background is primarily focused on building consumer-facing commercial apps (e.g., banking, gaming, or general retail apps), this role will not be a match for your skillset</span><span data-path-to-node=\"14,4,0,1\"><sup></sup></span><span data-path-to-node=\"14,4,0,2\">.</span> </p>\n</li>\n\n<h3 data-path-to-node=\"15\">🌟 Desirable Skills (Pluses):</h3>\n<ul data-path-to-node=\"16\">\n<li>\n<p data-path-to-node=\"16,0,0\" id=\"p-rc_8d35db773b1c9097-160\"><span data-path-to-node=\"16,0,0,0\">Experience with Secure Boot, verified boot (AVB), and common Android exploit vectors</span><span data-path-to-node=\"16,0,0,1\"><sup></sup></span><span data-path-to-node=\"16,0,0,2\">.</span> </p>\n</li>\n<li>\n<p data-path-to-node=\"16,1,0\" id=\"p-rc_8d35db773b1c9097-161\"><span data-path-to-node=\"16,1,0,0\">Automation of firmware build pipelines and signing processes using Python or Bash</span><span data-path-to-node=\"16,1,0,1\"><sup></sup></span><span data-path-to-node=\"16,1,0,2\">.</span> </p>\n</li>\n<li>\n<p data-path-to-node=\"16,2,0\" id=\"p-rc_8d35db773b1c9097-162\"><span data-path-to-node=\"16,2,0,0\">Comfort collaborating effectively with international teams across different time zones</span><span data-path-to-node=\"16,2,0,1\"><sup></sup></span><span data-path-to-node=\"16,2,0,2\">.</span> </p>\n</li>\n\n<p data-path-to-node=\"18\">💬 <strong data-path-to-node=\"18\" data-index-in-node=\"3\">Ready to solve complex engineering challenges that almost no one else in the industry is tackling?</strong> Apply directly or send me a DM. Let's chat!</p>\n</ul></ul></div>"
    },
    {
      "text": "Benefits",
      "content": "\n<li>Local benefits depending on the country&nbsp;of hire</li>\n<li>Company-funded health insurance for employee and immediate family</li>\n<li>Company-funded employee life and disability insurance</li>\n<li>Paid vacation days, unlimited sick leave</li>\n<li>$2,000 USD annual Co-working travel perk</li>\n<li>$2,000 USD annual Professional Development perk</li>\n<li>Phone finance, headphone benefit, home office equipment allowance and wellness perks&nbsp;</li>\n<li>Catered lunches</li>\n"
    }
  ],
  "country": "US",
  "createdAt": 1780334512078,
  "updatedAt": null,
  "categories": {
    "team": "Core Engineering",
    "location": "San Francisco, CA",
    "commitment": "Full-Time",
    "department": "Product Development",
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