Hashorn

Location · AI Software Development Company

AI Software Development Company in London

London is the largest software engineering market in Europe — heavy concentration of fintech (Monzo, Revolut, Wise), B2B SaaS, and enterprise software. Buyers are typically experienced CTOs and engineering leaders who care more about delivery discipline than cost. Hashorn works as your AI software development company for teams in London and across the United Kingdom. AI-driven software development where engineers own architecture and AI handles scaffolding, review, and test generation.

UTC+0 gives London a full afternoon overlap with India, a half-day overlap with the UAE, and a morning overlap with the US east coast.

Local context

What the market looks like

Why our delivery model is shaped for buyers in this market.

Densest fintech engineering market in Europe; sophisticated buyer expectations around compliance, security, and audit.

Strong remote-first culture post-2020; comfortable hiring senior engineers in different time zones.

Premium on senior-only delivery, weekly cadence, and clear technical communication.

Who we work with

Typical buyers

Series A–C fintech and B2B SaaS startups in London.

Scaling product companies looking for offshore engineering, QA, and security capacity.

Agencies serving enterprise clients in the City and across the UK.

What you get

As your AI software development company

AI-driven software development where engineers own architecture and AI handles scaffolding, review, and test generation.

AI-augmented senior engineering, end to end

Evaluation harness for every AI feature

Prompt-injection defences and rate limiting

Telemetry for prompt, response, and cost

Human-in-the-loop fallback paths

Documented model and provider switching strategy

How we deliver

Our process

Senior engineers run the work. AI handles the scaffolding. Weekly demos keep things honest.

01

Frame

Define the AI feature, the eval set, the guardrails, and the human-in-the-loop fallback before building.

02

Prototype

Stand up the model + retrieval + tool-use loop end-to-end against your real data.

03

Harden

Add evaluation harness, prompt-injection defences, observability, and graceful failure paths.

04

Ship

Release behind a flag, watch the telemetry, expand the audience, iterate on the eval set.

Stack

Tools and technologies

OpenAIAnthropicHugging FaceLangChainLlamaIndexpgvectorPineconeWeaviateLangSmithFastAPI

FAQ

Questions clients ask before we start.

Building in London? Let's talk.

Tell us what you're building, we'll tell you how we'd ship it.

Book an intro call →