Jul 9, 2026

Staff Software Engineer - LLM Prompt Quality

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What You'll Do • We are seeking an exceptional Senior Full Stack Engineer to join our team and play a pivotal hands-on role in shaping the current and future capabilities of our product. • Work closely with the co-founders and be responsible for building core components and elevating our product to the next level. • Be an expert prompt engineer who deeply studies the latest strategies for prompting new models and getting the best performance out of them. • Use your innovative thinking and application of new ideas for prompt iteration and optimization for supporting new models, iterating on user feedback, etc. • Full-stack engineering, touching all parts of the stack and building end-to-end features. What You'll Bring • Expertise in evaluating and improving output quality, accuracy and consistency of LLMs, both off-the-shelf and fine-tuned • Experience building and/or using prompting frameworks for prompt hosting, versioning and application • Proven track record in fast-paced, startup environments and collaborating with global teams • Advanced skills in software development methodologies, programming languages, and system architecture • Experience in customer-facing roles for requirements gathering and updates • Knowledge of GenAI, LLMs Tech Stack Frontend: ReactJS, Bootstrap, Tailwind CSS, or similar frameworks Backend: Node.js, Express.js Databases: NoSQL and SQL DevOps: CI/CD pipelines, cloud services (GCP, Azure, AWS) Bonus: Experience with Applied GenAI, LLMOps, and LLM evaluations 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. Apply Now