AI Growth Engineer-AI Marketing Systems

AI Growth Engineer-AI Marketing Systems

Full-Time 60000 - 80000 £ / year (est.) No working from home possible
LEC AI

At a Glance

  • Tasks: Build an AI-powered marketing system, creating innovative solutions across multiple brands.
  • Company: Join LEC AI, a cutting-edge tech company focused on AI and robotics.
  • Benefits: Competitive salary, flexible work options, and opportunities for professional growth.
  • Other info: Collaborative team environment with a focus on product development and innovation.
  • Why this job: Be at the forefront of AI technology and make a real impact in marketing.
  • Qualifications: 3+ years in AI/LLM systems and hands-on experience with modern tech stacks.

The predicted salary is between 60000 - 80000 £ per year.

LEC AI is building an AI-powered marketing operating system for LEC group's four brands (AI, robotics, beverages, UK-China trade), and productising it. You'll own it end-to-end: persona layers, digital humans, signal-triggered outbound, data indices, and the agent army. This is a builder role in live production, not an R&D lab.

What you'll build

  • Brand-brain content engine: RAG + knowledge-graph (pgvector, Neo4j) on a 4-layer memory stack, drafting on-brand content from real meeting transcripts across 4 brands, with per-brand compliance gates.
  • AI persona layer: per-employee personas grounded in voice-ID'd meeting data: in-voice drafting to avatar video to conversational agents; Mandarin dubbing/localisation (one video, five languages).
  • Self-hosted digital-human pipeline: MuseTalk/LivePortrait/HeyGem-class OSS on RTX 4090-class GPUs; cloned TTS; RTMP streaming; sub-3s latency; AI livestream host for lead-gen and commerce.
  • Compliant variation engine: one story, platform-native cuts per persona/brand, all disclosed and watermarked.
  • Meeting→publish pipeline: WhisperX to diarization to clip to caption to multi-platform scheduling, fully automated.
  • Signal-Triggered Growth Engine: Companies House, premises-licence, and venue-signal watchers firing persona-led outreach across our 16,681-venue LeadGen DB (Clay + n8n).
  • Proprietary Data Index Engine: quarterly indices from our operational data (on-trade, robotics deployment, UK-China trade), built for journalist and AI-engine citation.
  • AI Fame Engine: newsjacking, journalist pitching, and SoS/Featured/Qwoted response automation on Donnie's insight memory.
  • WhatsApp Trade-Ordering Agent: venue reorders via WhatsApp Business Platform (Twilio/360dialog).
  • AI phone agents: Vapi-class voice agents with UK data residency, consent-gated.
  • Creative-Testing Factory: brand-brain generates 50-100 ad variants, auto-launches on Meta Advantage+/TikTok Smart+, auto-kills losers, winners feed back.
  • Synthetic focus-group layer: pre-publish testing on AI personas built from first-party audience data.
  • Agent-ready commerce: MCP/ACP endpoints, structured feeds, llms.txt/ai-catalog, schema for agentic discovery and buying.
  • The agent army: ~40 agents spanning content, distribution, fame, revenue, analytics, commerce, and ops (LangGraph/CrewAI, self-hosted n8n as glue), including a Launch-Orchestrator (

AI Growth Engineer-AI Marketing Systems employer: LEC AI

LEC AI is an exceptional employer for those looking to make a significant impact in the AI marketing landscape. With a dynamic work culture that fosters innovation and collaboration, employees are empowered to take ownership of their projects while benefiting from continuous growth opportunities. Located in a vibrant tech hub, LEC AI offers unique advantages such as access to cutting-edge technology and a supportive team environment, making it an ideal place for passionate individuals to thrive.

LEC AI

Contact Details:

LEC AI Recruitment Team

We think you need these skills to ace AI Growth Engineer-AI Marketing Systems

AI/LLM Systems Production
RAG (Retrieval-Augmented Generation)
Embeddings
Vector Databases
Agent Frameworks (LangGraph, CrewAI)
Video Generation APIs
Voice Cloning