David Shein
Founding Partner @ OIF Ventures
Sydney, Australia
David Shein is a seed investor at OIF Ventures in Sydney focused on SaaS and Software. David has been involved in investing in and managing a number of start-up and early stage technology companies, many of which have been successfully exited. David was the founder and Managing Director of Dimension Data Australia Pty Ltd. and established Dimension Data Australia (formerly Com Tech Communications) in July 1987 as a SpecialistSupplier of networking and communications products. At the time of sale, Dimension data employed over 1400 people, had revenues of $700mil with no external debt. The company was sold for an enterprise value of over $1bil on 2000. David actively mentors management teams. David recently served as the Chairman of Centric Wealth Advisers Ltd. and was Chairman of Holly Connects, Inc. David was also Executive Chairman and Founding Investor of Macromatix . David is currently Non-Executive Chairman of Montech Holdings Limited. David holds a B.Comm and B. Acc from the University of Witwatersrand.
- Total investments:
- 15
- Last investment:
- Lead investor:
- 33%
Last updated:
For AI agents: llms.txt
Industries David Shein invests in
Stages David Shein invests in
Countries David Shein invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $981k–$16M
- Series A
- $2.3M–$7.3M
Investment Focus
Industry
- SaaS 4 (27%)
- Software 3 (20%)
- Internet 2 (13%)
- Health Care 2 (13%)
- Construction 2 (13%)
Stage
- Seed 7 (47%)
- Series A 5 (33%)
- Series C 1 (7%)
- Funding Round 1 (7%)
Country
- Australia 9 (60%)
- United States 2 (13%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Kasada
|
Kasada protects online, mobile, and API channels from system takeover, content scraping, DOS, and account takeover. Kasada challenges the economics of leveraging automation when abusing applications and APIs. | $20M / Dec 10, 2025 | |
Human Health
|
Human aims to assist medical professionals and patients to make more statistics selections. | $5.6M / Seed / Oct 30, 2025 | |
OneMRI
|
OneMRI is a provider of comprehensive whole-body MRI scans that are radiation-free, clinically reviewed by radiologists, and explained by doctors. | $1.6M / Seed / Aug 18, 2025 | |
Trusst AI
|
Trusst AI is a technology company focused on transforming how businesses manage their customer experience (CX) operations through the power of AI. Our platform simplifies the often complex and resource-heavy process of leveraging AI, enabling organisations to easily extract actionable insights from customer interactions—whether from voice calls,chats, emails, or unstructured documents.What sets Trusst AI apart is its self-iterating system that continuously learns and adapts. The insights extracted are used to train and fine-tune automated CX operations and engagements, allowing businesses to deliver more personalised and effective customer interactions at scale. As the platform processes more data, it autonomously improves its ability to optimise these interactions, ensuring that businesses stay ahead in providing exceptional customer experiences.Trusst AI’s solutions cover everything from real-time transcription and translation to AI-driven automation, quality assurance, and data-driven routing. Our platform is securely deployed within a customer’s AWS environment, ensuring data privacy and compliance while delivering cutting-edge AI capabilities tailored to your organisation’s needs. | $2.5M / Seed / Mar 04, 2025 | |
Earlywork
|
Early work involves building APAC's first tech sales bootcamp. They offer talent-hiring services intended to provide career resources in tech, startups, and the social impact industry. They provide industry-backed tech sales techniques from experts at Salesforce, Safety Culture, Uber, and more, along with an intimate cohort of ambitious peers. | $981.4K / Seed / Nov 22, 2023 | |
|
Human Health
|
Human aims to assist medical professionals and patients to make more statistics selections. | $7.1M / Seed / Jul 25, 2022 | |
Mastt
|
Mastt is a private technology company founded in 2019 and based in Sydney, Australia. The company builds capital project and program management software powered by AI for owner-side construction teams. Mastt serves project owners, project managers, project management consultants, real estate developers, government agencies, PMOs, and owner’srepresentatives managing capital projects, infrastructure programs, and construction portfolios.Mastt helps organizations replace spreadsheets and manual reporting with structured construction project management software built for project controls. The platform centralizes cost management, scheduling, risk registers, contracts, progress payments, change orders, dashboards, documents, portfolio reporting, and audit-ready records in one system.Mastt differs from contractor-first construction management tools by focusing on the owner side of capital delivery. Its software helps teams oversee budgets, commitments, forecasts, cash flow, milestones, project health, payment status, and portfolio performance across multiple construction projects and programs.Mastt’s AI supports AI Chat, AI PDF Reader, document review, invoice scanning, data extraction, payment verification, dashboard support, and project reporting workflows. Teams use Mastt to significantly reduce admin, improve cost control, strengthen governance, speed up stakeholder reporting, and deliver capital projects on time and on budget. | $6.9M / Series A / Mar 01, 2022 | |
All G
|
Called All G Foods, the company uses technology to develop dairy proteins that can be included in milk and other “cow-free” dairy products, as well as to enhance its incoming plant-based meat ranges. | $15.5M / Seed / Sep 06, 2021 | |
Go1
|
GO1 provides a platform that allows companies to upscale their workforce with on-demand training and a dynamic content-driven platform for companies that are Open to Learn. The funding follows an integration with Microsoft Teams, which enables organizations using Teams to learn directly within their workplace ecosystem. Individuals can now find,consume, share, and discuss learning resources from its library of online learning resources. | $40M / Series C / May 18, 2020 | |
Assignar
|
Assignar is a cloud-based construction operations software built to help infrastructure focused subs & self-perform contractors improve productivity, profitability, safety, and quality in the field and office. Assignar's platform upgrades key components of operations: production tracking & quantities, labor and equipment management,resource loaded scheduling, field data, timesheets, and more. | $6.2M / Series A / Oct 23, 2018 | |
| See all 15 investments → | |||
Co-Investors
About OIF Ventures
OIF is a venture capital firm focusing on partnering with entrepreneurs building businesses.
OIF Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
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David Shein
Founding Partner
|
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Isabella Rich
Principal
|
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Jerry Stesel
Founding Partner
|
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Laurence Schwartz
General Partner
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Emily Pfeiffer
Head of Community & Partnerships
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FAQ
What does David Shein invest in?
David Shein invests primarily in SaaS, Software and Internet startups, most often at Seed and Series A stage. Most of the 15 investments tracked by Shizune back companies in Australia. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is David Shein's check size?
David Shein typically joins rounds of $981k–$16M at Seed and $2.3M–$7.3M 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 David Shein participates in.
How do I contact David Shein?
Public channels for David Shein include LinkedIn. 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 David Shein last invest?
The most recent investment recorded for David Shein closed in Dec 2025. Shizune tracks 15 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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