L1 Prompt Engineer, Agent Builds & Training

Nimbus AI is a company that builds the fastest way for companies to create, train, and resell branded conversational and workflow agents. They are seeking a Prompt Engineer to design, optimize, and maintain the prompts and training structures for their AI systems, collaborating across teams to enhance agent performance.

Responsibilities

• Prompt design & optimization for conversational agents, workflow automations, and partner-specific models.
• Training loop development —structuring data, crafting examples, writing evaluation prompts, and improving model reliability.
• Agent behavior tuning to ensure consistent voice, accuracy, guardrails, and performance across multiple verticals.
• Experimentation frameworks to test model variants, evaluate outputs, and iterate based on quant/qual insights.
• Content & instruction authoring for onboarding flows, tools, action schemas, and dataset expansion.
• Cross-functional collaboration with product, design, engineering, and GTM teams to ship agent improvements fast.

Skills

• Experience crafting prompts, building workflows, or working with LLMs in real applications.
• Strong analytical instincts—comfortable evaluating model outputs, identifying failure patterns, and proposing fixes.
• Ability to turn complex workflows into structured instructions, edge-case examples, and scalable prompt patterns.
• Curiosity and a builder mindset: you test, iterate, document, and refine continuously.
• Comfort working with basic technical tools (APIs, JSON, dev environments) — deeper engineering experience is a plus but not required.
• Excellent written communication; you’re able to write crisp, structured, well-scoped prompts that drive predictable behavior.

Company Overview

• Designing conversational flows is tedious, error-prone, and rarely scalable. It was founded in 2025, and is headquartered in , with a workforce of 11-50 employees. Its website is https://nmbs.ai.

Company H1B Sponsorship

• Nimbus has a track record of offering H1B sponsorships, with 2 in 2022. Please note that this does not guarantee sponsorship for this specific role.