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Annwn

Full Stack Founding AI Engineer

London
Posted 1 day ago
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We are currently in stealth but we are building an agentic AI & intelligence platform for sustainability action and decision-making.

Organisations today are drowning in fragmented environmental data - carbon, biodiversity, water, policy, supply chains & more - but still struggle to answer the most important questions:

  • What should we do next?
  • What’s the impact if we do?
  • What’s the return on action - financially and environmentally?

Our startup exists to close that gap.

We are building a workflow and decision making layer on top of sustainability data: AI agents that ingest messy real-world inputs, reason over them, run scenarios, recommend actions, and learn from outcomes over time. All while building up a knowledge and context graph to build the single best view of how the organisation works today.

This is from a team who has worked in the sustainability space for years and have successfully existed a prior business to one of the largest businesses in the world. We’re now taking that learning and building the AI-native version of sustainability consulting.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

Start with a chat, not a search bar

Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.

P

Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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It searches the market for you

Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.

Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Strong

Only hits

No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.

The Role

We’re looking for Founding Full Stack AI Engineers who want to build agentic systems from the ground up. You’ll work at the core of our platform - designing and implementing AI systems that:

  • Ingest and structure unstructured sustainability data
  • Reason across complex, uncertain domains
  • Run simulations and scenario analysis
  • Support multi-step decision-making workflows
  • Improve continuously via feedback and memory

You’ll have real ownership, real influence on architecture, and direct exposure to customers and domain problems. Our key focus is to take our prototype and turn it into something we start to deploy, test and scale with customers.

What We’re Looking For

Essential

  • Strong software engineering fundamentals
  • 7+ years building full-stack applications
  • Proficiency in modern web technologies - ideally in React/Next.js/TypeScript
  • Experience with backend development using Python
  • Comfort working with messy, real-world data
  • Clear communicator who can design, architect and explain complex systems
  • Use of coding agents to accelerate work (Codex/Claude Code)

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Strong Plus

  • Experience building agentic workflows that are trusted
  • Experience with LangChain, LangGraph, or similar
  • Experience with vector databases, embeddings, RAG pipelines
  • Experience with graph databases
  • Experience building simulation, optimisation, or decision-support systems
  • Prior startup or early-stage experience

Why Join Us

  • Work on problems that actually matter - climate, nature, social
  • Build cutting-edge agentic systems
  • Strong influence in early key decisions
  • Meaningful equity at an early stage
  • Work with a passionate team of successful founders
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Skills

Software Engineering
Full-Stack Development
Web Technologies
React
Next.js
TypeScript
Backend Development
Python
Data Structuring
Simulation
Decision-Making
Communication
Agentic Workflows
Graph Databases
Optimization
Sustainability

Location

London, England, United Kingdom

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