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Staff Fullstack Engineer

lyacollective.com · San Francisco, United States · On-site

Pay: USD 200,000 – 315,000 a year

Posted Sep 11, 2026

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ABOUT THE OPPORTUNITY I’m currently recruiting for a Staff Full Stack Engineer opportunity with a fast-growing audio data research company working at the forefront of AI. They’re looking for a senior engineer who can take ownership of technical decisions and build and ship products end-to-end. You’ll work closely with researchers and engineers to develop the platforms supporting the next generation of audio AI. This is a high-impact opportunity to work on technically challenging products used by some of the world’s leading AI labs and FAANG companies, while having significant influence over architecture, engineering direction, and product development. This is a full-time on-site position in SF. JOB RESPONSIBILITIES Owning and driving 0-to-1 product development across the full stack. Making key technical decisions with speed and limited data in a fast-paced startup environment. Building scalable systems processing terabytes of audio data. Collaborating closely with research engineers on data collection and iteration. Mentoring junior engineers and setting technical standards as the team scales. JOB QUALIFICATIONS 5 -​ 8 years of experience in product-​focused full-​stack engineering. Full-​stack web development:​ both frontend and backend. Undergraduate CS degree from top 30 U.​S university. Fluent in TypeScript and Python. Owned and led 0-​to-​1 projects end-​to-​end,​ including technical decision-​making. High growth startup experience during a high-​growth phase. NICE TO HAVE SKILLS Experience at AI-​forward or data infrastructure companies (e.​g.​,​ Scale AI,​ Labelbox). Mentored junior engineers or tech-​led a team. Experience building or deploying LLM-​based solutions. JOB BENEFITS Highly competitive salary. Unlimited PTO. Top-notch health, dental, and vision coverage with 100% coverage for most plans. So much more! RIGHT TO REPRESENT By applying to this position, you acknowledge and agree to be represented by LYA Collective for this opportunity. Compensation The base pay range for this role is $200,000 – $315,000 per year.