Chalfen Ventures
153 Portland Road, London, W11 4LR, United Kingdom
Overview
Chalfen Ventures is Mike Chalfen's venture capital firm. Mike backs software startups aiming to grow & dominate new and often unusual markets. Investing from day 1 through series A, Chalfen Ventures often leads rounds, but is always flexible. Mike operates as a solo VC, with no distractions from working closely with the entrepreneurs who have chosen him. He is based in London, England.
- Total investments
- 27
- Lead investments
- 9
- Investments · 12mo
- 6
- Active investors
- 1
Sector focus
- Finance
- Financial Services
- Venture Capital
Investment portfolio
- Iridius
Led · Seed · Apr 2026
Iridius offers a platform composed of a knowledge engine that breaks regulations down rule-by-rule for real-time queries by AI agents and a solution factory that helps customers design, build, and connect compliant AI workflows to existing enterprise systems. The company's initial focus is life sciences and pharmaceutical customers, where it targets detailed compliance, validation, and audit requirements. Iridius was founded in 2024 by Mike Kropp and Alistair Lowe-Norris and has a leadership team with veterans from Microsoft, AWS, OpenAI, and Amazon. The startup has assembled an advisory bench of former CIOs from major pharma and medtech companies and added Clark Golestani, former Merck CIO, to its board. Iridius has not yet commercially launched its product but has a signed co-development agreement with a pharmaceutical customer and is in active discussions with others. Following its $8.6M seed raise, the company is expanding hiring, particularly for its AI engineering team.
- SurrealDB
Participated · Series A · Feb 2026
SurrealDB develops an AI-native, cloud-native database that merges relational, document, graph, time-series, vector, search, geospatial and key-value models within a single Rust-based engine. The newly released SurrealDB 3.0 is billed as the platform’s most stable, high-performance and enterprise-ready version, delivering real-time functionality that reduces the need for multiple specialty databases and external API layers. A key enhancement targets AI agent memory and context management by embedding memory and context graphs directly in the database. The system also offers structured querying, graph traversal and embedded business logic, giving developers flexibility while maintaining scalability. Fresh capital will be directed toward boosting reliability, performance, security, cloud capabilities and overall enterprise readiness, while the team expands to support large-scale cloud deployments. To date, the company has raised $44 million across seed and Series A funding.
- Biographica
Participated · Seed · Jan 2026
Founded in 2022, London-based Biographica has built a crop- and trait-agnostic platform that combines large multi-modal genomic datasets, knowledge graphs, and foundation models to predict which genes causally drive desirable agronomic traits. By feeding rapid experimental results back into its models, the company claims it can identify proven gene targets 12× faster than traditional GWAS and QTL approaches while also uncovering novel targets missed by legacy methods. The technology can deliver partners either ranked target lists or experimentally validated traits ready for field trials, and has already been piloted with two of the world’s top five seed companies as well as Cibus and BASF’s vegetable-seed arm Nunhems. Commercial traction to date comes from these paid pilots and contracts rather than product sales, but early accuracy data generated inside customer pipelines served as technical validation for investors. Biographica plans to use new capital to expand its proprietary data collection, extend the platform to additional crops and traits, and deepen commercial relationships across the seed industry. Ultimately, the company positions itself as the AI layer that converts abundant genome data into actionable edits, aiming to accelerate yield improvements and climate resilience in global agriculture.
- Deblock
Participated · Series A · Nov 2025
Deblock merges traditional banking features with blockchain infrastructure by linking a regulated euro current account to a personal, self-owned crypto wallet, enabling users to manage fiat, investments, and DeFi access in one place. Founded by former Revolut and Ledger executives, the company launched in France in April 2024 and has already attracted more than 300,000 customers. Its regulatory posture is strong: Deblock is authorised by the Banque de France as an Electronic Money Institution and holds a MiCA licence from the AMF. Core features include everyday payments, savings via Vaults, and direct entry to decentralised finance while preserving user self-custody. The business model targets consumers seeking security and usability without relinquishing control of their assets. With fresh capital, Deblock plans to build local teams, localise its product, and add German-language support ahead of a rollout in Germany. Management sees Germany’s mature digital-finance ecosystem and clear regulations as critical to accelerating adoption of on-chain banking across Europe.
- Amenitiz
Participated · Series B · Nov 2025
Founded in 2017 in Barcelona, Amenitiz offers independent hoteliers a single cloud platform that unifies reservations, operations, payments, online presence, and revenue management. The company now serves more than 15,000 properties, up from 4,000 at the time of its 2022 Series A, and its customers have processed over €3 billion in bookings for 15 million guests in the past 18 months. Recent feature launches include AmenitizBoost for direct-booking marketing and PriceAdvisor for dynamic pricing, tools that the firm says can lift revenue by up to 20%. Amenitiz is doubling down on AI-driven product innovation to further automate hotel workflows and plans to introduce additional revenue-generating modules while expanding into new European markets. The platform targets the 750,000-plus independent hotels that constitute more than 80% of Europe’s hospitality market, aiming to give them the digital capabilities traditionally reserved for large chains. Historically, Amenitiz raised €620k in seed funding in 2019, €6.5 million in 2021, and €27 million in a 2022 Series A round, and it also acquired Ododo in 2022 to bolster its offering. Backed by a roster of international investors, the company positions itself as the default operating system for Europe’s independent hotel segment.
Team
Mike Chalfen
Founder & Partner
LinkedIn