Onos

Principal Software Engineer (Backend)

Staff Software Engineer (Full Stack)

Growth Marketing Manager

Onos Health is building an AI-driven healthcare data platform to improve healthcare quality and affordability by reducing waste. They recently closed a $6M Seed round and are working with large health plans. The role is for a Principal Software Engineer (Backend) to lead the development of significant platform components, architecting solutions, building integrations and data pipelines, and collaborating with ML/LLM engineers. This person will also establish engineering best practices and influence product strategy.

<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">Principal Software Engineer (Backend)</h1><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Location</h2><p class="my-4 text-gray-700 leading-relaxed">San Francisco</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Employment Type</h2><p class="my-4 text-gray-700 leading-relaxed">Full time</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Location Type</h2><p class="my-4 text-gray-700 leading-relaxed">Hybrid</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Department</h2><p class="my-4 text-gray-700 leading-relaxed">Engineering</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Compensation</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">$200K – $250K • Offers Equity</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">About Onos Health</h2><p class="my-4 text-gray-700 leading-relaxed">Onos Health’s mission is simple but ambitious: ensure every healthcare dollar goes toward delivering the highest quality care. Today, 30% of total U.S. healthcare spending is wasted due to ineffective care and administrative burden caused by misalignment between providers and payers.</p><p class="my-4 text-gray-700 leading-relaxed">Onos is addressing this by building the largest AI-driven healthcare data platform. Our models enables payers to make faster, more accurate decisions across their populations. By guiding members to the right care, Onos is channeling more dollars to high-quality care that drives outcomes while making healthcare more affordable.</p><p class="my-4 text-gray-700 leading-relaxed">Onos recently closed a $6M Seed round with top-tier investors and is already working with some of the nation’s largest health plans, signing its first national plan just months after launch.</p><p class="my-4 text-gray-700 leading-relaxed">Come join a category-defining company and help reimagine healthcare for the better.</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Why Onos?</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Meaningful impact: Help fix what is fundamentally broken in healthcare</li><li class="leading-relaxed">Direct collaboration: Work alongside experienced founders with deep healthcare and data expertise</li><li class="leading-relaxed">Culture: Join a high-performing, transparent, and results-oriented team</li><li class="leading-relaxed">Ownership: Significant responsibility and autonomy from day one</li><li class="leading-relaxed">Opportunity: Play a pivotal role in building a fast-growing, category-defining healthcare AI company</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">The Role</h2><p class="my-4 text-gray-700 leading-relaxed">We're seeking a capable technical leader who is motivated to meaningfully improve the way healthcare is administered in the United States. You'll take ownership of developing a significant part of the Onos platform through hands-on development and technical leadership. As an early team member, you'll work closely with our founding team while helping to build and lead a growing engineering team. This role is a hybrid role based in San Francisco, where you'll be expected to work at our office in person at least once a week.</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">What you'll be doing at Onos:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Architecting and implementing major platform components to provide actionable insights and recommendations to health plan administrators</li><li class="leading-relaxed">Develop robust integrations with health care systems and build scalable data pipelines for health records, provider directories, and claims processing</li><li class="leading-relaxed">Work closely with ML/LLM engineers to build and optimize models for behavioral and mental health</li><li class="leading-relaxed">Establish engineering best practices and technical foundations for future team growth</li><li class="leading-relaxed">Shape our technical roadmap, make key architectural decisions, and influence the company's product strategy</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Technical Challenges At Onos:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Develop an intelligent engine that ingests complex medical standards of care documents and evaluates provider adherence to guidelines</li><li class="leading-relaxed">Design and implement sophisticated anomaly detection systems to identify fraudulent or abusive providers</li><li class="leading-relaxed">Build ML pipelines to analyze large amounts of medical records and automate recommendations for clinical reviewers</li><li class="leading-relaxed">Scale our systems to process millions of healthcare records while maintaining strict security and compliance requirements</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Tech Stack:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">At Onos, we work with a modern tech stack where you'll have the freedom to evaluate and adopt cutting-edge technologies as we scale.</li><li class="leading-relaxed">Languages/Frameworks: Python, Django, Django Ninja, Celery / Celery Beat</li><li class="leading-relaxed">Database/Storage: PostgreSQL (AWS RDS), S3</li><li class="leading-relaxed">Infrastructure/Systems: AWS (ECS, Bedrock, etc.), Docker, Terraform</li><li class="leading-relaxed">Development Tools: Github, Jira, Cursor</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">What we're looking for:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">5+ years experience building robust and well-architected software applications</li><li class="leading-relaxed">Customer obsessed and motivated to make an impact in the healthcare space</li><li class="leading-relaxed">Expertise with data engineering and backend web development practices</li><li class="leading-relaxed">A hands-on leader and collaborative team player with an attention to the details</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Bonus points if you have:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Significant experience working with healthcare data and with HIPAA best practices</li><li class="leading-relaxed">Worked with machine learning and large language models for end-user applications</li><li class="leading-relaxed">Built and managed teams of engineers on major software projects</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Benefits and Perks</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Flexible hybrid arrangement: 1-2 days/week at San Francisco office (financial district), remote-first culture</li><li class="leading-relaxed">Unlimited vacation policy</li><li class="leading-relaxed">Paid parental leave</li><li class="leading-relaxed">Medical, dental, and vision insurance</li><li class="leading-relaxed">Pre-tax commuter benefits</li><li class="leading-relaxed">401(k)</li><li class="leading-relaxed">Significant equity as an early employee</li><li class="leading-relaxed">Ground-floor opportunity to help build a team and culture</li><li class="leading-relaxed">Regular team events and offsites</li><li class="leading-relaxed">Company-provided equipment and home office setup</li></ul><p class="my-4 text-gray-700 leading-relaxed">We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.</p><p class="my-4 text-gray-700 leading-relaxed">Compensation Range: $200K - $250K</p>

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<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">About ChipAgents</h2><p class="my-4 text-gray-700 leading-relaxed">ChipAgents is redefining the future of chip design and verification with agentic AI workflows. Our platform leverages cutting-edge generative AI to assist engineers in RTL design, simulation, and verification, dramatically accelerating chip development. Founded by experts in AI and semiconductor engineering, we partner with top semiconductor firms, cloud providers, and innovative startups to build intelligent AI agents. The company is a Series A company backed by tier-1 VC firms. ChipAgents is deployed in production to companies that have shipped 16B chips.</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Position Overview</h2><p class="my-4 text-gray-700 leading-relaxed">We are seeking Research Scientists with deep expertise in AI and machine learning to pioneer the next generation of AI-assisted electronic design automation. In this role, you'll conduct research that directly impacts chip designers, working at the intersection of cutting-edge AI and real-world semiconductor workflows. You'll train and deploy large language models at scale, architect intelligent agent systems, and transform research breakthroughs into production-ready tools used by leading hardware companies.</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Key Responsibilities</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Conduct research in AI-assisted EDA, focusing on practical solutions that accelerate chip design and verification workflows.</li><li class="leading-relaxed">Train and deploy large language models using substantial compute resources, optimizing for both performance and real-world applicability.</li><li class="leading-relaxed">Design, build, and benchmark agentic AI systems using state-of-the-art LLMs and proprietary in-house models.</li><li class="leading-relaxed">Translate research innovations into production-ready features that integrate seamlessly into hardware engineering workflows.</li><li class="leading-relaxed">Collaborate with cross-functional teams to identify high-impact research directions based on customer needs and field deployment learnings.</li><li class="leading-relaxed">Publish findings and contribute to the broader AI and EDA research communities where appropriate.</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Qualifications</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Degree in Computer Science, Machine Learning, Electrical Engineering, or a related field (or equivalent research experience).</li><li class="leading-relaxed">Strong background in large language models, deep learning, and modern ML frameworks (e.g., PyTorch, JAX).</li><li class="leading-relaxed">Experience with AI agent architectures, autonomous systems, or multi-agent workflows.</li><li class="leading-relaxed">Familiarity with electronic design automation (EDA) tools, RTL design, or hardware-software co-design is a strong plus.</li><li class="leading-relaxed">Strong programming skills in Python and experience with large-scale model training infrastructure.</li><li class="leading-relaxed">Ability to balance research rigor with pragmatic engineering to deliver real-world impact.</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Why Join Us</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Shape the future of how AI accelerates chip design and verification.</li><li class="leading-relaxed">Work directly with the world's leading semiconductor and AI hardware companies.</li><li class="leading-relaxed">Access to significant compute resources and real-world deployment opportunities for your research.</li><li class="leading-relaxed">Be part of a high-impact, mission-driven team backed by tier-1 VC firms.</li><li class="leading-relaxed">Competitive compensation, benefits, equity options, and professional growth opportunities.</li></ul>

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Principal Software Engineer (Backend)

Staff Software Engineer (Full Stack)

Growth Marketing Manager

Job Details