Igor Ryabenkiy
Founder and Managing Partner @ AltaIR Capital
San Francisco, United States
Igor Ryabenkiy is a seed investor at AltaIR Capital in San Francisco focused on Software and Information Technology. Igor Ryabenkiy is the Managing Partner at AltaIR Capital. Igor is a serial entrepreneur and angel investor with over twenty years of successful executive and investment experience including Internet startups and IT companies. He has funded, developed, and exited a significant number of investment projects worldwide.
- Total investments:
- 192
- Last investment:
- Lead investor:
- 14%
Last updated:
For AI agents: llms.txt
Industries Igor Ryabenkiy invests in
Stages Igor Ryabenkiy invests in
Countries Igor Ryabenkiy invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $120k–$5M
- Pre-Seed
- $120k–$2.2M
- Series A
- $1.6M–$25M
Investment Focus
Industry
- Software 37 (19%)
- Information Technology 19 (10%)
- E-Commerce 18 (9%)
- Artificial Intelligence 15 (8%)
- Apps 14 (7%)
Stage
- Seed 92 (48%)
- Series A 29 (15%)
- Pre-Seed 13 (7%)
- Funding Round 11 (6%)
- Convertible Note 5 (3%)
Country
- United States 77 (40%)
- Israel 22 (11%)
- Russian Federation 13 (7%)
- United Kingdom 9 (5%)
- Canada 3 (2%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Langbase helps developers ship composable AI agents with hyper-personalized memory (RAG).Langbase is the composable AI infrastructure and developer experience to build, collaborate, and deploy any AI agents (AI features). Our mission is to make AI accessible to everyone, any developer not just AI/ML experts. We are the only composable AIinfrastructure. That's all we do. | $5M / Seed / Feb 25, 2026 | ||
| Sprouty is a mobile app for tracking infant development up to two years old. The app records height, weight, and body measurements over time. It tracks sleep, feeding, diaper changes, pumping, and the child’s mood. The app includes exercises for motor skills, speech, and physical activity. | $550K / Seed / Dec 09, 2025 | ||
| Zinit is a US-based AI-powered B2B procurement platform that optimizes tail spend and helps enterprises cut costs by 15-30%. Operating in the US and high-growth markets like India, Indonesia, and Brazil, the company targets the $3T private enterprise procurement tail spend market with its 1-click cross-border autonomous procurement tech solution.This solution enables RFPs to be completed 80% faster and boosts the process of winning bids for new suppliers by 50%. | $8M / Seed / Nov 25, 2025 | ||
| The iPNOTE AI paralegal manages the entire IP registration workflow: answers attorney questions, reviews deliverables, summarizes documents, tracks deadlines, sends follow-ups to providers, monitors progress from filing to grant, and processes payments. Your team interacts with one intelligent agent that smoothly coordinates with patent attorneysworldwide - turning weeks of manual work into automated efficiency. | $1M / Seed / Oct 28, 2025 | ||
| Evolve simplifies training for businesses, allowing them to launch comprehensive courses & trainings in just 24 hours. By turning various materials such as documents, presentations and videos into engaging content, Evolve speeds up onboarding by 40%, cuts turnover by 15%, and enhances engagement. With AI features it saves companies up to 90% ontime creating courses and up to 50% on training costs while improving overall learning results. | $1M / Seed / Sep 18, 2025 | ||
| Native Commerce is a world-class retail & logistics platform designed to help modern retailers operate, scale, and deliver exceptional customer experiences, all from one connected system.Built by experienced operators who’ve run retail at scale, the platform unites eCommerce, warehouse management, and delivery into a single ecosystem that’sfast to deploy, easy to run, and proven to grow with your business.With deep expertise spanning retail operations, technology, and eCommerce strategy, Native Commerce helps brands turn complex operations into a competitive advantage.Trusted by leading brands including Carrefour, CityDrinks, Circle K, Heimkaup, and Cerise, Native Commerce powers retail operations across the UK, Europe, and the Middle East, and is expanding into emerging markets worldwide. | $2.2M / Seed / Apr 23, 2025 | ||
| Tella is a video presentations for remote teams. Record, edit, and share video presentations from your browser. | $2.1M / Seed / Apr 22, 2025 | ||
| Turing.com connects world-class remote software engineers with world-class companies. 200+ companies, including those backed by Google Ventures, Andreessen, Founders Fund, Kleiner, and Bloomberg, have hired Turing developers. Over 1M+ developers from across 150+ countries have chosen Turing as their preferred platform for landing remote jobs. | $111M / Series E / Mar 06, 2025 | ||
| We are helping the $70 Bln trade show and expo market to uncover additional 20% revenue from digital advertising powered by events’ B2B intent data and brand trust. Much like it was done with Retail Media, which is now a $140B market on its own. | $750K / Pre-Seed / Mar 01, 2025 | ||
| SubStrata is a novel developer of Interpersonal AI technology for Dealmakers & Negotiators | $5.6M / Seed / Aug 10, 2024 | ||
| See all 192 investments → | |||
Co-Investors
About AltaIR Capital
AltaIR Capital manages funds that invest in the world's most promising companies with disruptive ideas and great return potential. They invest in early and growth stage startup companies in various sectors. Its portfolio companies represent key players of the startup industry, top incubator graduates, and promising teams.
AltaIR Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Dmitry Firskin
Chief Investment Officer
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Guy Zbarsky
Venture Partner; Venture Partner
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Igor Ryabenkiy
Founder and Managing Partner
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Mikhail Zakharov
Senior Investment Associate
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Stanislav Ryabenkiy
Head of Legal
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FAQ
What does Igor Ryabenkiy invest in?
Igor Ryabenkiy invests primarily in Software, Information Technology and E-Commerce startups, most often at Seed and Series A stage. Most of the 192 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Igor Ryabenkiy's check size?
Igor Ryabenkiy typically joins rounds of $120k–$5M at Seed, $120k–$2.2M at Pre-Seed and $1.6M–$25M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Igor Ryabenkiy participates in.
How do I contact Igor Ryabenkiy?
Public channels for Igor Ryabenkiy include LinkedIn, the website linked on this profile and Facebook. 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 Igor Ryabenkiy last invest?
The most recent investment recorded for Igor Ryabenkiy closed in Feb 2026. Shizune tracks 192 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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