# Don Rainey

> Don Rainey is a Series A investor at Grotech Ventures (Charlotte) backing Software and SaaS. See 39 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Grotech Ventures](https://shizune.co/investors/profile/grotech-ventures)
- Location: Charlotte, United States
- Total investments: 39
- Last investment: Feb 2022
- Lead investor: 49%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/pub/don-rainey/11/948/3b
- X (Twitter): http://twitter.com/drainey1
- Website: https://x.com/drainey1

Don Rainey is a Venture Partner at Grotech Ventures and was a Director at Personal.com. He attended George Mason University - School of Business and James Madison University.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 11 | 28% |
| SaaS | 5 | 13% |
| Enterprise Software | 4 | 10% |
| Mobile | 3 | 8% |
| Finance | 3 | 8% |

60 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 20 | 51% |
| Series B | 5 | 13% |
| Series C | 5 | 13% |
| Funding Round | 3 | 8% |
| Seed | 1 | 3% |

6 stages tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Krista Software | Krista is a nothing-like-code platform to automate business outcomes, build ML from scratch, and leverage the world’s collective AI more simply than you might think possible. | $15M | Series A | Feb 01, 2022 |  |
| Youreka Labs | Youreka Labs is a Salesforce-native application for simplifying smart mobile forms and procedures at scale. | $8.5M | Series A | Aug 12, 2021 |  |
| Payzer | Payzer is a North Carolina-based financial technology company that offers an all-in-one financial tool which helps contractors grow their businesses and exchange money with ease. Its mobile and cloud-based platform allows customers to accept credit and debit cards, and electronic checks in the field or at the home office with real-time trackingacross their organizations. It also allows its users to provide instant financing up to $55,000 using a mobile phone, tablet, or personal computer as well as control purchases by giving employees Visa debit purchasing cards. Payzer was established in 2014. | $23M | Series D | Jun 21, 2021 |  |
| PetScreening | PetScreening is a platform designed for property owners and housing providers to effectively manage pet policies and streamline the processes related to assistance animals. PetScreening offers a secure, simple location for residents to store and share important information about their pets, enhancing the diligence required by landlords.PetScreening enables tenants to create detailed profiles for their pets, including vaccination records, behavioral history, and photos. This centralized information aids property managers in making informed decisions regarding pet policies. | $3M | Series A | Jun 10, 2021 |  |
| Rent Ready | They are a single-source vendor that delivers end-to-end apartment services (including Painting, Cleaning, Carpet Cleaning, Counter and Tub Refinishing, and Punch) with unbeatable customer service- which means with one call you can take a move-out and be ready for a move-in on your schedule, not your vendors. | $10M | Series A | Mar 09, 2021 |  |
| XOi Technologies | XOi Technologies is a cloud-based mobile application that empowers field service companies to do more business with greener techs and fewer truck rolls. They change the way field service companies in the electrical, mechanical, and plumbing industries capture data, communicate with stakeholders, and service their customers. XOi Technologiesdevelops and designs wearable technology solutions for business. It also offers an industrial eyewear computing platform that comprised of both firmware and comprehensive suite of software applications. The company uses natural language processing, machine learning, workflow automation, and computer vision to streamline documentation of intelligent archive and resurface service content, service calls, real-time remote support, and improve customer transparency from the frontlines of field service. XOi Technologies was founded in 2010 and is headquartered in Nashville, Tennessee, USA. | $11M | Series C | Aug 07, 2019 |  |
| Payzer | Payzer is a North Carolina-based financial technology company that offers an all-in-one financial tool which helps contractors grow their businesses and exchange money with ease. Its mobile and cloud-based platform allows customers to accept credit and debit cards, and electronic checks in the field or at the home office with real-time trackingacross their organizations. It also allows its users to provide instant financing up to $55,000 using a mobile phone, tablet, or personal computer as well as control purchases by giving employees Visa debit purchasing cards. Payzer was established in 2014. | $9.2M | Series C | Nov 19, 2018 |  |
| Payzer | Payzer is a North Carolina-based financial technology company that offers an all-in-one financial tool which helps contractors grow their businesses and exchange money with ease. Its mobile and cloud-based platform allows customers to accept credit and debit cards, and electronic checks in the field or at the home office with real-time trackingacross their organizations. It also allows its users to provide instant financing up to $55,000 using a mobile phone, tablet, or personal computer as well as control purchases by giving employees Visa debit purchasing cards. Payzer was established in 2014. |  | Series B | Jun 06, 2018 |  |
| ICX Media | ICX Media is a data-as-a-service company providing breakthrough data, analytics and intelligence to brands, media and entertainment companies and agencies. The ICX platform leverages machine learning and data science to analyze billions of district data points to best predict what type of video content is most likely to engage specific targetaudiences. Leading media companies, particularly CTV and streaming focused companies, use ICX to more effectively create and market content that resonates with their target audiences. Brands and agencies use ICX to better create and target highly engaging content for target consumers. Clients include numerous large media and entertainment companies, brands and agencies around the world. | $6.6M | Series A | Oct 12, 2017 |  |
| Adwerx | Adwerx is an industry-leading digital advertising automation platform that provides personalized, hyper-targeted, and fully automated digital advertising solutions for real estate and mortgage companies. Scalable for businesses of any size, Adwerx executes advertising with the power needed for large enterprises and the simplicity expected for anindividual agent.As a trusted partner to thousands of real estate and mortgage firms and their top producers, Adwerx enables its customers to stay ahead of the competition by reaching new audiences and nurturing existing relationships. For more information about Adwerx and its suite of digital advertising solutions, visit www.adwerx.com. |  | Series A | Aug 30, 2017 |  |

10 of 39 investments shown.

## Co-investors
- [Boulder Ventures](https://shizune.co/investors/profile/boulder-ventures) — VC Fund, 9 deals together
- [Revolution](https://shizune.co/investors/profile/revolution) — VC Fund, 9 deals together
- [Route 66 Ventures](https://shizune.co/investors/profile/route-66-ventures) — VC Fund, 5 deals together
- [IDEA Fund Partners](https://shizune.co/investors/profile/idea-fund-partners) — VC Fund, 4 deals together
- [Alerion Ventures](https://shizune.co/investors/profile/alerion-ventures) — VC Fund, 3 deals together
- [Amplifier Venture Partners](https://shizune.co/investors/profile/amplifier-venture-partners) — VC Fund, 3 deals together

## About Grotech Ventures

VC Fund · Vienna, United States

As one of the established firms in the venture industry, Grotech Ventures has built a reputation for being a collaborative, long-term partner for CEOs and entrepreneurs by aligning their definition of success with that of their partners.They initially invest between $500,000 and $5 million in high-growth technology companies, reservingsignificant capital for subsequent investments to support companies through their early and growth stages.They look to partner with entrepreneurs who have fresh ideas, breakthrough innovations, and unconventional approaches that will yield explosive growth. They believe that their ability to meaningfully contribute to a business’s development is just as important as the capital they invest. As such, they seek investment opportunities that offer them the chance to leverage the experience, insight, and network they have built since their inception in 1984. Their approach is personal and long-term, not institutional.

5 contacts available at Grotech Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Don Rainey | Venture Partner | https://shizune.co/investors/profile/don-rainey |
| Steve Fredrick | General Partner | https://shizune.co/investors/profile/steve-fredrick |
| Chuck Cullen | General Partner and CFO | https://shizune.co/investors/profile/chuck-cullen |
| Darren Appanah | Vice President | https://shizune.co/investors/profile/darren-appanah |
| Frank Adams | Managing General Partner, Executive Chairman, and Founder | https://shizune.co/investors/profile/frank-adams |

## Similar investors

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- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does Don Rainey invest in?

Don Rainey invests primarily in Software, SaaS and Enterprise Software startups, most often at Series A and Series B stage. Most of the 39 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Don Rainey last invest?

The most recent investment recorded for Don Rainey closed in Feb 2022. Shizune tracks 39 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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