John Spindler
Angel Investor · at Twin Path Ventures
London, United Kingdom
John Spindler is a seed investor at Twin Path Ventures in London focused on Software and Artificial Intelligence. John Spindler is the CEO of Capital Enterprise. John Spindler attended the University of Leeds.
- Total investments:
- 13
- Last investment:
- Lead investor:
- 54%
Last updated:
For AI agents: llms.txt
Industries John Spindler invests in
Stages John Spindler invests in
Countries John Spindler invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $181k–$5M
- Pre-Seed
- $430k–$3M
Investment Focus
Industry
- Software 7 (54%)
- Artificial Intelligence 6 (46%)
- Machine Learning 5 (38%)
- Art 1 (8%)
- SaaS 1 (8%)
Stage
- Seed 6 (46%)
- Pre-Seed 6 (46%)
- Angel 1 (8%)
Country
- United Kingdom 10 (77%)
- United States 1 (8%)
- The Netherlands 1 (8%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Wholesum makes it possible for businesses to gather the data they truly require and create analysis that can handle actual human responses. | $980.8K / Pre-Seed / Jan 05, 2026 | ||
| Trismik is building an adaptive evaluation platform that tests LLMs for real-world risks such as hallucinations, bias, and factual inaccuracies. | $3M / Pre-Seed / Sep 24, 2025 | ||
| Sention Technologies is a battery cell intelligence firm that uses advanced diagnostic techniques and machine learning to maximize the performance of a battery at any stage of its life. | $5M / Seed / May 21, 2025 | ||
| Sagittal AI is building AI solutions that adapt to human workflows instead of forcing humans to adapt to AI. | $2.2M / Pre-Seed / Apr 07, 2025 | ||
| Jack is an AI financial co-pilot that employees use inside Slack or Teams to make purchase and approval requests for spending or managing company money. Jack issues one-time use payment card details for supplier purchases, automates reconciliation and reduces invoice fraud by enforcing budgets, regulations, and internal policies at the point ofspend. Jack ensures compliance by acting as an internal auditor on every purchase transaction. Additionally, Jack helps finance leaders manage cash flow and cuts the time to report numbers by 63% each month. | $1.1M / Pre-Seed / Dec 14, 2023 | ||
| Buildt AI is generative AI to write iOS or Android native apps from some simple text requirements written by a customer - no code or technical information or experience required. This is not just a web app or a spreadsheet with a layer of UI. Buildt will automatically ‘write’ real code based on the simple requirements provided by the customer.Wealso interviewed technical executives/managers from companies such as Robinhood, Uber, and Cazoo and they were also extremely positive about using Buildt to build internal MVPs, product prototypes and quickly build their "CRUD" apps. Their existing experience with "no code" apps is that they are extremely limited to web apps only and can't satisfy their requirements accurately. | $500K / Pre-Seed / Nov 01, 2022 | ||
| CheckStep provides a AI-powered Trust & Safety and UGC management software to online platform worldwide. It enables company to manage the full policy management life-cycle. | $430K / Pre-Seed / Jun 28, 2021 | ||
| Rahko is one of the world’s most advanced teams in quantum machine learning. With the Rahko quantum machine learning platform and a team comprising experts in quantum machine learning, quantum software and quantum hardware engineering, and quantum chemistry, Rahko is constantly breaking ground in quantum machine learning for quantum chemistry.Rahko has a strong focus on solving real-world, commercially valuable problems, in partnership with several of the world’s largest quantum hardware manufacturers and with some of the world’s largest companies whose future capacity to compete depends on their capabilities in chemical simulation. | $1.6M / Seed / Oct 11, 2019 | ||
| Terrabotics provides up-to-date, rapid and remote 2D and 3D topographic mapping, monitoring, and imagery analytics to enable smart Natural Resources, Natural Capital, and Infrastructure management around the world - powered by satellite remote sensing and earth observation tech. Expertly-crafted, high precision, digital elevation models (DEM, DSM,and DTM) and satellite imagery help industries reduce costs, boost efficiency, and empower situational awareness -before boots hit the ground Terrabotics uses sensors and data fusion to directly track key lifecycle events throughout energy, oil & gas, mining, and metals supply chains such as natural gas flaring levels, industrial emission concentrations, and infrastructure construction in oil fields and refineries, to mines and smelters. We create market and ESG metrics that matter, based on measurements and observations, not corporate self-reporting!Our data analytics give asset managers, investors, corporates, and regulators up-to-date and truly objective operational, market, competitor, and ESG intelligence, months before public sources! | $705K / Seed / Nov 15, 2018 | ||
| Exited to Ascalia (2024)Metis Labs develops advanced AI-driven Process Control and Quality Assurance systems for the manufacturing sector. Since 2017, we have been at the forefront of using AI to enhance the efficiency of production lines, delivering products used by consumers globally.Key Achievements:• One of the world’s first companies touse Generative AI to control real-world equipment in operationally critical environments, verified by top global brands to deliver over 80% waste reduction. • Developed a safe, repeatable methodology to deploy Generative AI control systems across some of the largest Consumer Packaged Goods production lines worldwide. • Pioneered the miniaturization of AI control solutions, enabling deployment on low-powered, legacy Programmable Logic Controllers in critical manufacturing environments.Our mission is to reduce the environmental impact and enhance the profitability of large-scale manufacturing processes globally. | $1.2M / Seed / Jul 24, 2018 | ||
| See all 13 investments → | |||
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FAQ
What does John Spindler invest in?
John Spindler invests primarily in Software, Artificial Intelligence and Machine Learning startups, most often at Seed and Pre-Seed stage. Most of the 13 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does John Spindler invest in?
John Spindler typically joins rounds of $181k–$5M at Seed and $430k–$3M at Pre-Seed. These are whole funding-round sizes, not John Spindler's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds John Spindler took part in.
How do I contact John Spindler?
Public channels for John Spindler include LinkedIn and X (Twitter). For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did John Spindler last invest?
The most recent investment recorded for John Spindler closed in Jan 2026. Shizune tracks 13 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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