Fontana AI
Full Stack Engineer
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Full-time
Flexible hours
Full Stack Engineer
Build Flow — the governed AI platform where operators author AI Agents, design data pipelines, and run deterministic workflows.
Apply now → Fontana website Fontana docs
What Flow is
Fontana Flow is an Agent Harness, Knowledge Graph, and Workflow Engine integrated as a governed AI platform for organisations with strict compliance, audit, and operational control requirements.
Clients use it to author AI Agents, design data pipelines on an interactive canvas, run them on a reactive server-side engine, and layer governed AI agents on top with tools, skills, and approved model access. Every workspace is isolated; every privileged action can leave audit evidence.
Engineering at Fontana
We build software the AI-native way: agents write, review, and ship alongside humans. On a busy weekend we have spun up 5,000+ development agents. You will design work so fleets of agents can move fast — and so humans stay in the control path for what matters.
Our Slack workspace has more Agents and AI employees than humans. We build for a future where code and contributions flow from many hands, some human, some not.
❌ Does this sound chaotic rather than exciting? This role is not for you.
Reasons to use Rodeo
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.
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.
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.
✅ Sounds like the only sane way to ship in 2026? Keep reading.
What you will be working on
- End-to-end product slices
- Flow UI
- Knowledge Graph
- Agent Harness
- Reactive backend
- Workflow engine
Our Stack
You Will Be Working With The Following Technologies
- React 19
- TypeScript
- Vite
- Tailwind
- Convex
- Zitadel
- Node JS
- Postgres
- Vault
- Airbyte
- Docling
- OpenSandbox
- Kubernetes
- K3s
- Docker
- AWS
- Helm
- Terraform
- Traefik
- Gatus
- HyperDX / OTLP
- React-flow
- Python
- Vitest
- Playwright
…and more
You'd be a strong fit if you
- Write strong TypeScript and modern React.
- Ship full-stack features across UI and typed API/data layers.
- Are comfortable with reactive / real-time data.
- Test behaviour that can actually break.
- Communicate clearly in writing so agents and teammates can continue your work.
- Comfortable using Cursor as the primary dev IDE.
- Already work comfortably with AI-assisted development, agent review loops, and human-controlled shipping.
- Can operate around DevOps, AWS, Kubernetes, and production systems without drama.
- Understand why compliance evidence matters: SOC 2, ISO 27001, DORA, audit trails, access control, retention.
Bonus signals
Get help with your application
Your very own career expert that helps elevate your application to the next level.
- Convex, Firebase, or similar reactive backends.
- Canvas / editor / data-grid product surfaces.
- Workflow, ETL, or financial-ops tooling.
- Monorepo discipline and real AuthZ.
- CRDT principles.
- Audit trails, fail-closed paths, and evidence — not vibe-based “ship it”.
SOC 2 ISO 27001 DORA AWS K8s
Location
We will review applications in location rounds, because early collaboration will be easiest with timezone and founder access close to home.
- First round: London applicants
- Second round: UK applicants
- Third round: EU applicants
- Forth round: Global applicants
How we work
Flexible
Flexible hours.
AI-first
Agents and humans ship alongside each other.
Low theatre
Direct access to founders — no ticket theatre, no six-layer approval stack.
We prefer clean architecture over hacks. Specs and docs stay in sync with the code.
Apply
Application form via Notion. If this sounds like the only sane way to ship in 2026, send us your details.
Open application form →
React 19 TypeScript Vite Tailwind Convex Zitadel Node JS Postgres Vault Airbyte Docling OpenSandbox Kubernetes K3s Docker AWS Helm Terraform Traefik Gatus HyperDX / OTLP React-flow Python Vitest Playwright …and more
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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