What technologies does Composo use?

Composo uses Cloudflare DNS, Gmail, Google Apps, Microsoft Office 365, Amazon AWS. View their full technology stack — including all 13 detected tools — on StackWho.

Who is the CTO & Co-Founder of Composo?

Luke Markham is the CTO & Co-Founder at Composo. Get verified contact information on StackWho.

Who is the CEO & Co-Founder of Composo?

Sebastian Fox is the CEO & Co-Founder at Composo. Get verified contact information on StackWho.

Where is Composo located?

Composo is based in London, England, United Kingdom.

Composo

composo.ai

information technology & services

composo.ai

London, England, United Kingdom

1-10 employees

LinkedIn Profile

About Composo

software development, error detection in ai, data security, generative reward models, ai model improvement tracking, enterprise-ready evaluation, tool calling accuracy, ai system reliability, single-sentence evaluation criteria, deterministic evaluation, artificial intelligence, deterministic scoring, rag evaluation, tool call evaluation, consistent scoring, legal services, production ai validation, high-confidence scoring, ai performance metrics, deterministic ai scoring models

Composo's Tech Stack

AI/ML

Communication

Discord

Decision Makers at Composo

2 contacts

Luke Markham

CTO & Co-Founder

l***@composo.ai Sign up to view

Sebastian Fox

CEO & Co-Founder

s***@composo.io Sign up to view

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13 technologies detected · 2 decision makers · Emails available

Sales Outreach Angle

AWS infrastructure signals engineering sophistication. This company likely evaluates cloud cost management, security tooling, observability, and developer productivity solutions.

Composo's Position in the StackWho Database

• Composo is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 47,721 companies in England are in the StackWho database.
• 97,391 information technology & services companies are in the 1-10 employee range (same size as Composo).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Composo use?

Composo uses Cloudflare DNS, Gmail, Google Apps, Microsoft Office 365, Amazon AWS, Microsoft Azure Hosting, and 7 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Composo?

StackWho has verified email addresses for 2 decision makers at Composo. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Composo directly for sales, recruiting, or partnerships.

What industry is Composo in?

Composo operates in the information technology & services industry, headquartered in London, England, United Kingdom. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Composo's contact data?

Yes. StackWho Pro members can export decision maker contact data for Composo and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.