Research Engineer, Applied ML/AI

About Us
👏 Team from OpenAI, DeepMind, NASA, GoogleX, Tesla, and 2 physicians: 6 exits, 2 IPOs.
🔥 Our model outperforms Claude, Gemini, and GPT-4.5 on clinical benchmarks.
📈 400+ healthcare orgs signed in 16 months.
⚡️ $25M raised from YC, Amity Ventures, Sequoia scouts, and more.
🌎 $1T+ market opportunity. We’re going after all of it.

About the Role
We are seeking a Research Engineer, Applied ML/AI to bridge cutting-edge research and scalable production systems. This role will own training, fine-tuning, and inference toolchains, drive multimodal (text/audio/vision) integration, and optimize model throughput and evaluation in production. You’ll ensure Sully’s research artifacts translate into stable, high-performance features that power our agents in healthcare.

Key Responsibilities

• Own the full training, fine-tuning, and inference toolchains for Sully’s applied ML stack.

• Translate research repos into production-ready services behind stable APIs.

• Ship multimodal features (text, audio, vision) that enhance agent performance.

• Optimize inference pipelines for cost, throughput, and latency.

• Build evaluation systems that integrate into CI/CD, blocking weak checkpoints.

Hard Requirements

• Strong engineering background with experience in distributed systems and large-scale model training/serving.

• Hands-on experience with multimodal ML (audio, vision, text).

• Production ML hygiene: versioning, metrics, observability, reproducibility.

• Proven track record of shipping ML systems into production.

Nice-to-Have

• Experience with model optimization techniques (quantization, caching, pruning).

• Background in healthcare, medical AI, or other high-stakes regulated environments.

• Contributions to open-source ML frameworks or libraries.

First-Month Focus

• Audit and streamline current training/fine-tune/inference pipelines.

• Stand up evaluation frameworks that gate deployments in CI.

• Deliver first improvements in throughput, cost, or latency of deployed models.

Success OKRs (90 Days)

• Deploy at least one multimodal feature (speech or vision) to production agents.

• Reduce inference cost or latency by 30% through optimization strategies.

• Integrate evaluation guardrails into CI/CD to block underperforming model releases.

Culture Fit

• Persistent, driven problem solver

• Willing to push back on leadership to defend quality/timelines

• Thrives in high-ambiguity, fast-paced startup environments

Why Join Sully.ai?
🔥 Shape the Future of Healthcare: Build category-defining partnerships that enable doctors to focus on saving lives.
📈 Early-Stage Impact: Join early and play a critical role in shaping our partnership roadmap and overall company growth.
🌎 Remote-First Culture: Work with a talented, mission-driven team in a flexible, remote environment.
💰 Competitive Compensation: Enjoy a competitive salary, equity, and the opportunity to make a real difference.
🏆 Solve Scalability Challenges: Tackle complex challenges in a rapidly growing company, driving impactful change in healthcare.

Why Join Sully.ai?
🔥 Shape the Future of Healthcare: Build category-defining partnerships that enable doctors to focus on saving lives.
📈 Early-Stage Impact: Join early and play a critical role in shaping our partnership roadmap and overall company growth.
🌎 Remote-First Culture: Work with a talented, mission-driven team in a flexible, remote environment.
💰 Competitive Compensation: Enjoy a competitive salary, equity, and the opportunity to make a real difference.
🏆 Solve Scalability Challenges: Tackle complex challenges in a rapidly growing company, driving impactful change in healthcare.

Sully.ai is an equal opportunity employer. In addition to EEO being the law, it is a policy that is fully consistent with our principles. All qualified applicants will receive consideration for employment without regard to status as a protected veteran or a qualified individual with a disability, or other protected status such as race, religion, color, national origin, sex, sexual orientation, gender identity, genetic information, pregnancy or age. Sully.ai prohibits any form of workplace harassment.