Head of Agent Architecture

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Pencil

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2018

🤖 Artificial Intelligence

📣 Marketing

🤝 B2B

💰 $2.8M Seed Round - Pencil on 2020-04

Artificial Intelligence • Marketing • B2B

Pencil is an AI-driven creative platform for marketers and brands. It uses generative artificial intelligence to produce ad creative (images and video) and concept variations designed for performance marketing and e-commerce advertisers, helping teams scale creative production and test many ad variants quickly. Pencil is positioned as a B2B tool for marketing teams and agencies.

📋 Description

• Define Pencil’s technical vision and roadmap for agent architecture, including multi-agent workflows, task decomposition, state management, and tool use • Hire, mentor, and manage a small team of Agent Architects • Set technical standards, provide real-time feedback, and run development conversations • Use and champion evaluation frameworks to measure agent performance • Own reusable agents and prompt libraries serving 1,000+ brands with unique voices • Decide what should be built as reusable platform functionality versus bespoke work • Partner with AI Engineering, Product, and Sales/Client leadership on prompting, RAG, and fine-tuning decisions • Serve as the final technical escalation point for complex client deployments • Lead discovery for high-stakes engagements and translate ambiguous client problems into buildable agent workflows • Present cost, latency, and reliability trade-offs to senior non-technical stakeholders • Represent Pencil’s agent technology with brand and agency stakeholders • Establish standards for decomposing client problems and explaining complex technical decisions in plain language • Drive system reliability, architectural efficiency, brand alignment, adoption at scale, client deployment success, stakeholder trust, and team growth

🎯 Requirements

• 8+ years of direct GenAI experience • 2+ years leading people or a function • Deep technical fluency with LLMs including GPT-4, Claude, and Gemini • Experience with multimodal models including Stable Diffusion, Midjourney, and video generation • Track record managing engineers or architects, or owning a function’s roadmap and outcomes • Systems thinking across latent space, context windows, and multi-agent inputs and outputs • Comfortable with Python, JSON structures, and API documentation • Experience with agent orchestration patterns such as task decomposition, tool use, and state management • Experience building or running benchmarking and A/B testing practices • Experience hiring and growing technical people, or owning a roadmap with stakeholder pressure • Ability to set strategic vision, gain senior leadership approval, and hold a team accountable • Demonstrated experience leading discovery with senior customers or stakeholders • Ability to turn vague briefs into scoped technical solutions • Background in solutions architecture leadership, forward-deployed engineering, or technical consulting is suitable • Ability to explain agent failure modes, evaluation results, and architectural trade-offs to non-technical stakeholders without jargon • Ability to translate creative direction into concrete system changes • Comfortable representing technology in client meetings

🏖️ Benefits

• 25 days PTO plus public holidays, although we operate a Flexible Time Off scheme • Health insurance / private medical cover • Monthly stipend towards wellness, fitness, and learning and development • Remote - work from anywhere in your home country • Enhanced parental leave policies, whether you become a parent through birth, adoption or surrogacy • Access to our Pencil office in The Shard, London for UK employees • Flexible working hours