Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

AI Prompt & Agent Developer

ProLegion

We're hiring an AI Prompt & Agent Developer to own behavioral slice(s) of our voice agents. That behavior splits into two categories: behavior shared across every deployment, and behavior specific to a subset of deployments. You're someone who actually enjoys looking at the data, because the data informs everything else. You'll write prompts, design subagent architectures, build evals, and push automation rates up one small, measurable win at a time. Responsibilities Write and maintain the prompts that run in production. Intent classification, information extraction, availability negotiation, closing phrases, insurance verification flows, objection handling, edge-case recovery. You own behavior that touches every customer call. Ship iteratively against real call data. Every morning, you'll listen to failed calls from yesterday. Every afternoon, you'll deploy a fix. You'll be using and helping to develop dashboards, call review tooling, and automated agents to accelerate the work. Build evaluation harnesses. You'll develop offline eval sets, run automated prompt optimization (we use GEPA-style approaches), and establish the test suites that let us ship changes without breaking live deployments. Human-in-the-loop onboarding. New customers come online constantly. You'll work with and iterate on our internal AI agents that translate a practice's intake form, their scheduling rules, and their quirks into an agent configuration. Every week, you'll be designing new evaluation metrics for these customers and helping to improve existing ones. QA and continuous improvement. You'll simulate real-world customer scenarios, measure outcomes, and monitor production agent performance so you can catch drift early and fix it fast. What we're looking for You've shipped prompts that broke production. Doesn't matter if it was at OpenAI, a chatbot startup, a research lab, or your own project. What matters is that you've felt the specific pain of a prompt that worked beautifully in dev and broke the second it hit real users. You're meticulous and careful. Looking at data for long stretches energizes you, as long as there's a signal. You stay organized when five things are in flight. We deploy multiple times a day, and we also run healthcare workflows where a bad change costs real money for real practices. You know the difference between moving fast and breaking things. Writing sensibility. The best prompt engineers are good writers. You notice register, rhythm, and word choice. You can tell why "Hello, cornerside dental? This is Ava, how can I help you out today?" sounds warmer than "Hello, Cornerside Dental, this is Ava. How can I help you out today" out of a TTS. Analytical and empirical. You are relentlessly data-driven. Before you make changes, you proactively run experiments and measure. You don't ship because "I think this is better." You justify a change with "this moved booking rate from 78.2% to 81.4% on n=412 calls." Comfort with code. You don't need to be a senior engineer, but you should read Python fluently and TypeScript comfortably, and you can get almost any coding task done by pairing with modern AI coding tools. #J-18808-Ljbffr ProLegion

Vacancy posted 5 days ago
Similar jobs that could be interesting for youBased on the AI Prompt & Agent Developer in San Francisco, CA vacancy
  • Enterprise AI platform automating voice sales conversations for healthcare organizations You'll...  ...spend mornings debugging why a clinical-recruiting agent mispronounced "anesthesiology," then afternoons rewriting system prompts until phone calls pass for human. It's QA as... 
    Suggested
    Day shift

    Fluency Digital, Inc.

    San Francisco, CA
    4 days ago
  • $193.4k - $290k

     ...By combining frontier agentic AI, an enterprise-grade platform,...  ...Overview As a Software Engineer, Agents, you'll build the systems that...  ..., create optimal tools, and develop evals that enable faster...  ...Optimize agent performance through prompt engineering, model selection,... 
    Suggested
    Full time

    Harvey, Inc.

    San Francisco, CA
    1 day ago
  •  ...human customer experiences with AI. We are primarily an in-person...  ...-growing industries—our agents already reach over 50% of U.S....  ...healthcare complexity: You’ll develop deep expertise in healthcare systems...  ...tooling, RAG pipelines, and prompt engineering. Prior... 
    Suggested
    Full time
    Flexible hours

    Sierra Limited

    San Francisco, CA
    1 day ago
  •  ...human customer experiences with AI. We are primarily an in-person...  ...deliver production-grade AI agents : You'll build and ship highly...  ...quickly and consistently. Develop and refine AI agents capable...  ...agent tooling, RAG pipelines, and prompt engineering Prior... 
    Suggested
    Full time
    Flexible hours

    Sierra Limited

    San Francisco, CA
    1 day ago
  •  ...better, more human customer experiences with AI. We are primarily an in-person company...  ...About the Healthcare team Our healthcare agents already reach over 50% of U.S. families....  ...frameworks, agent tooling, RAG pipelines, and prompt engineering. Prior experience with... 
    Suggested
    Full time
    Flexible hours

    Sierra Limited

    San Francisco, CA
    1 day ago
  •  ...life sciences clients to understand their pain points and implement AI-powered solutions using the Bluenote platform. You’ll design and...  ...LLMs and agentic frameworks. Own end-to-end deployments from prompt crafting to evaluation. Iterate quickly with users to improve... 
    Full time

    Bluenote L.l.c.

    San Francisco, CA
    1 day ago
  • $230k - $315k

     ...democratizing access to cutting-edge AI innovation to enable any...  ....SuperApp is our flagship AI agent workspace. It unifies communication...  ...not just be "vibe coding" prompts ; you will build the actual...  ...Have (Preferred)Prior experience developing developer tools, SDKs, or... 
    Work at office
    Flexible hours

    Instabase

    San Francisco, CA
    1 day ago
  • $180k - $390k

     ...human customer experiences with AI. We are primarily an in-person...  ...PM on TTH is tinkering and developing tangible prototypes; and every...  ...on TTH is capable of owning an agent end to end. As a part of this...  ...agent tooling, RAG pipelines, and prompt engineeringPrior experience... 
    Full time
    Flexible hours

    Sierra

    San Francisco, CA
    6 hours ago
  • $117.2k - $176.7k

     ...DetailsAbout SalesforceSalesforce is the #1 AI CRM, where humans with agents drive customer success together....  ...AI data legible and actionable for developers.Drive the Agent Studio integration:...  ...core specialty.You have advanced prompt engineering skills: the ability to write... 
    Full time

    Salesforce

    San Francisco, CA
    2 days ago
  • $150k - $250k

     ...passion for building ambitious AI-powered systems. In this role,...  ...systems that support autonomous AI agents in production.Lead technical...  ...scalability, reliability, and developer efficiency.Evaluate new technologies, model APIs, and prompting strategies to enhance agent performance... 

    11x AI

    San Francisco, CA
    2 days ago
  • $166.9k - $225.9k

     ...automation by integrating intelligent AI capabilities into its trust...  ...compliance environments Develop agentic workflows that combine...  ...scalable LLM + retrieval + agent systems in production environments...  ..., RAG, agent frameworks, prompt engineering Production Expertise... 
    Full time
    Work at office
    Immediate start
    Worldwide
    Monday to Friday
    Flexible hours

    Drata

    San Francisco, CA
    1 day ago
  •  ...scale the coordination fabric for agent-to-API and agent-to-agent...  ...underlying REST API substrate, and developer-facing onboarding systems....  ...applications, tool-calling systems, prompt loops, or systems designed...  ...leading developer of API and AI connectivity technologies, is... 
    Temporary work
    Remote work

    Kong

    San Francisco, CA
    4 days ago
  •  ...About Us At FurtherAI, we’re building the next generation of AI agents for the insurance industry - a trillion-dollar market ready for...  ...For ~ Amazing ability to speak with LLMs - Occam's razor in prompting ~ Strong experience with Python ~6+ years building in ML/... 
    Full time
    Work at office

    Further AI

    San Francisco, CA
    1 day ago
  •  ...their behalf. Our customers get the support of caring nurses while AI agents handle the tedious backend work — all covered by Medicare....  ...before users feel them, and turns production signal into better prompts, retrieval, and models. Make quality a number we can move, not... 
    Full time

    Mira Mace

    San Francisco, CA
    1 day ago
  •  ...Description Cooperidge Consulting Firm is seeking an AI Agent Software Engineer for a high-momentum AI platform leader in San Francisco...  ...ownership role for engineers who want to move beyond "opaque prompts" and build production-ready, autonomous agents. You will design... 
    Full time
    Apprenticeship
    Flexible hours

    Cooperidge Consulting Firm

    San Francisco, CA
    1 day ago
  •  ...About Zed Zed is building the first AI-native, licensed neobank in the Philippines designed to democratize access to...  ...to own the infrastructure layer behind our production AI agents. This is not a prompt engineering role. It's not a UI role. It's about the harness... 
    Full time

    Zed

    San Francisco, CA
    1 day ago
  • $250k - $330k

     ...is the leading conversational AI platform empowering every brand...  ...Hunter Douglas to deploy AI agents that power personalized, deeply...  ...better Experience building developer tools, APIs, platforms, or internal...  ...Background with LLMs, prompt engineering, or AI agent systems... 
    Full time
    Work at office

    Decagon

    San Francisco, CA
    1 day ago
  • $150k - $250k

     ...closely with engineering leadership and our AI partners to prototype, build, and scale...  ...on fullstack systems that power AI agents from concept to deployment.Research and evaluate...  ...new approaches to agent orchestration, prompting strategies, and model alignment.Collaborate... 

    11x AI

    San Francisco, CA
    2 days ago
  •  ...Netic is the AI revenue engine for essential services who are the backbone of the American...  ...Netic's Software Engineers working on the Agent Platform team build the features that let...  .... This isn't a role writing one-off prompts. You'll work on the orchestration layer, execution... 
    Full time
    Summer work
    Internship
    Immediate start
    Sleeping nights

    Netic

    San Francisco, CA
    1 day ago
  •  ...About the Team The Codex Core Agent team builds the kernel of...  ...We’re looking for applied AI engineers to help bring Codex...  ...Work closely with research to develop and run evals to measure agent...  ...Improve performance through prompting, tool-use strategies, context... 
    Full time

    OpenAI

    San Francisco, CA
    1 day ago
  • $190.9k - $334.1k

     ...meaningful work. Today, ServiceNow is the AI control tower for business reinvention....  ...in innovative and meaningful ways. Develop novel AI Agent frameworks, architectural patterns, or...  ...integration, LLM-based systems design including prompt engineering, context engineering, and... 
    Work at office
    Immediate start
    Remote work
    Flexible hours
    Day shift

    ServiceNow

    San Francisco, CA
    2 days ago
  • $200k - $240k

     ...00K - $240K • Offers Equity Traba is the AI operating layer for the industrial supply...  ...seeking an entrepreneurial Senior Applied Agent Engineer to join as a founding member of the...  ...tools, written evals, and tuned prompts against production traces. You think in terms... 
    Full time
    Temporary work
    Local area
    Shift work
    Day shift

    Traba

    San Francisco, CA
    2 days ago
  • $230k

     ...traditional software engineering, agent management, and system-...  ...the way software ought to be developed in 2026 and beyond. What winning...  ...software. You will update our system prompts, build automated verification...  ...’re building more than ever. AI demand is driving dirty energy... 
    Full time
    Work at office
    Remote work
    Visa sponsorship

    Gravity Climate

    San Francisco, CA
    2 days ago
  • About Nooks.ai: Nooks is an applied AI lab building the Agent Workspace for GTM. We design AI agents that operate across the full sales action set, from account...  ...with AI agents. For example, you've shipped a prompt or tool change in response to a specific user complaint... 
    Work at office
    3 days per week

    Nooks

    San Francisco, CA
    5 days ago
  • $193.4k - $290k

     ...By combining frontier agentic AI, an enterprise-grade platform,...  ...Overview**As a Software Engineer, Agents, you'll build the systems that...  ..., create optimal tools, and develop evals that enable faster...  ...Optimize agent performance through prompt engineering, model selection,... 

    Doist

    San Francisco, CA
    3 days ago
  • $216k - $270k

    Senior Software Engineer, Agent Oversight About Scale Scale’s mission is to develop reliable AI systems for the world’s most important decisions. As the leading AI data...  ...production: evaluation signals, failure modes, prompt/tool‑calling workflows, experiment results, data... 
    Full time

    Scale AI

    San Francisco, CA
    4 days ago
  •  ...You're genuinely cracked at AI agents. You build agentic systems that actually work — tool...  ...agent stack: tool/function calling, RAG, prompt & context engineering, MCP, and evals...  ...observability * Multi-agent orchestration or developer-tooling / harness work * Django/DRF,... 
    Full time
    Remote work

    Saturn Terminal LLC

    San Francisco, CA
    a month ago
  • $300 per month

     ...us Edison Scientific builds and deploys AI scientist agents to accelerate science and the development...  ...teams to explore new agent architectures, prompting strategies, tool integrations, and evaluation frameworks. Develop reusable infrastructure – agent skills, tool... 
    Full time
    Work at office

    Edison Scientific Inc.

    San Francisco, CA
    1 day ago
  •  ...About the Team API Agents builds the shared agent harness, tools, and infrastructure...  ...infrastructure, applied product teams, and external developers to translate model progress, traces,...  .... About OpenAI OpenAI is an AI research and deployment company dedicated... 
    Full time
    Internship

    OpenAI

    San Francisco, CA
    1 day ago
  •  ...we're hiring several extremely talented software engineers across the stack. In this role, you will... Build the next set of AI Features at Pylon, rapidly iterating based on customer feedback Improve the quality and performance of AI features You might... 
    Full time
    Work at office
    Relocation

    Pylon

    San Francisco, CA
    1 day ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to AI Prompt & Agent Developer. Be the first to apply!