Banana Fritters Ltd · London · Est. workshop
A workshop for applied AI.
We design, build and deliver real world solutions with tangible results.
The stack
One stack, six layers. Built and run in-house.
Interface
Static-first marketing, streaming app UI, dashboards and design systems.
Astro · Cloudflare Pages · Node · JS SPA · SSE streaming
Front-end engineering · Product design · Brand systems
Application & API
Multi-tenant APIs with per-partner keys, rate limits and versioned prompts.
FastAPI · Python 3.11 · REST + SSE · slowapi · structlog
Backend engineering · API design · Observability
Retrieval & evidence
Hybrid search with a relevance gate, so an answer arrives with its source attached.
pgvector · FAISS HNSW · bge-base-en-v1.5 (768-dim) · BM25 re-rank · LLM gate
ML & retrieval engineering · Prompt architecture · Evaluation
Agents
Recorded once, grounded on live screens, chained to evidence, gated at every irreversible step.
Intent graphs · Screen & API connectors · Provenance ledger · Reversibility ontology
Agent engineering · Workflow design · Domain analysis
Data
Scheduled ingestion, embedding and caching pipelines feeding everything above.
PostgreSQL · Cloud Run Jobs · PubMed eUtils · Google AQ / Weather / Pollen · OpenAQ
Data engineering · Pipeline ops · Scientific literature methods
Infrastructure & assurance
Deployed globally or on your own hardware — with zero-PII architecture and an auditable trail.
GCP Cloud Run · Cloud SQL · Secret Manager · Local inference appliances
Platform & SRE · Security architecture · Regulated-industry compliance
Python · FastAPI · PostgreSQL / pgvector · FAISS · Astro · Cloud Run · Cloudflare · On-prem