Brand Engineer at Defyner
- Location
- London, United Kingdom / Remote
- Compensation
- £90k-£130k + Equity
Marketing is being rebuilt, and Defyner is leading the charge by turning brand logic into machine-usable execution. We’re looking for a Brand Engineer to join our founding team and own the delivery of production-grade AI workflows for enterprise giants across the US and UK.
If you have hands-on experience with multi-agent systems and a passion for creative excellence, this is your chance to build systems that scale brand speed without risk.
What's the next step?
Defyner are hiring from Jack's network. Talk to Jack for free and get a direct introduction to the team, if a good fit.
Role overview
Own the end-to-end delivery of multi-agent workflows for enterprise clients, turning creative strategy into production-grade systems. You will architect brand-safe AI operations, design evaluation harnesses to catch hallucinations or tonal drift, and build ‘Brand Code’—the machine-readable foundation layer that ensures AI outputs remain consistent with a company’s unique voice and identity.
About Defyner
Software · 1-10 employees
Defyner is a London-based brand engineering company. It helps the world’s most ambitious businesses harness the potential of their brand in the agentic age. It designs, develops and deploys multi-agent systems inside a brand’s own infrastructure, encoding the brand’s identity and constraints so its marketing teams can move faster without losing what makes them distinctive. Defyner transfers capability rather than creating dependency: clients own, operate and scale what it builds.
What you will do
- Design and ship brand-safe multi-agent workflows that automate complex marketing tasks while enforcing creative constraints and compliance rules.
- Build comprehensive evaluation suites and scorecards that monitor agent performance to catch brand drift, hallucinations, and tonal mismatches in real-time.
- Collaborate directly with client stakeholders to translate high-level brand positioning and voice guidelines into structured, machine-readable constraints and logic.
Who this is a fit for
- Proven experience building, debugging, and deploying production-grade multi-agent systems and tool-using agentic applications.
- Strong technical fluency combined with a genuine instinct for brand identity and the ability to translate creative judgment into machine guidance.
- Comfortable operating in a high-ownership 0→1 environment, taking responsibility for client relationships and building the technical delivery playbook from scratch.
Why this role is remarkable
- Work at the intersection of AI and branding, building 0→1 systems that solve critical production and governance challenges for world-class enterprise brands.
- Join a high-growth founding team backed by a $1M angel round and led by founders with deep strategy expertise from Amazon and WPP.
- Scale your impact by developing the core ‘Brand Code’ methodology, turning one-off AI deployments into a repeatable, observable platform layer.
How Jack & Jill work together
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI agent for hiring, working for the company. She recruits from Jack’s network.
If your profile’s a match and Defyner wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.