James Kuklinski
General Partner, Growth @ Spark Capital
James Kuklinski is a Series B investor at Spark Capital focused on FinTech and Financial Services. Prior to joining Spark, James spent 3 years at Allen & Company, a New York-based investment bank, where he focused on internet, enterprise software, media companies and sports franchises. He evaluated Allen’s early-stage principal investments and advised clients on M&A and equity financings for companies like LinkedIn, Twitter, SiriusXM,Cloudera, Roku, and NBA franchises, among others.
- Total investments:
- 8
- Last investment:
- Lead investor:
- 88%
Last updated:
For AI agents: llms.txt
Industries James Kuklinski invests in
Stages James Kuklinski invests in
Countries James Kuklinski invests in
Investment Focus
Industry
- FinTech 3 (38%)
- Financial Services 3 (38%)
- Payments 2 (25%)
- Manufacturing 2 (25%)
- Telecommunications 2 (25%)
Stage
- Series B 2 (25%)
- Series D 2 (25%)
- Series E 2 (25%)
- Series A 1 (13%)
- Series C 1 (13%)
Country
- United States 4 (50%)
- Australia 1 (13%)
- United Kingdom 1 (13%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Lumilens
|
Lumilens creates photonics products designed for high-performance computing. | $700M / Series C / Aug 06, 2026 | |
Sigma Computing
|
Sigma Computing develops cloud-based analytics and business intelligence software for data exploration and analysis. The company provides a spreadsheet-style interface that allows users to work with large datasets using familiar formulas, tables, and reporting workflows. Its platform supports live data analysis, dashboard creation, embeddedanalytics, workflow automation, and collaborative data applications. Sigma Computing also offers AI-powered capabilities for querying data, building applications, and integrating machine learning models within analytics processes. The platform connects directly to cloud data infrastructure, helping teams manage, visualize, and interact with operational and business data without requiring data movement or coding expertise. | $80M / Series E / May 18, 2026 | |
Eve
|
Eve is the industry's first customizable AI assistant for the legal profession. | $103M / Series B / Sep 30, 2025 | |
Retym
|
Retym is a semiconductor startup that builds semiconductor technology to transform the data center and telecommunications industries. The company's team is formed by ASIC designers, optical communications experts, and seasoned investors. | $75M / Series D / Mar 31, 2025 | |
|
Sigma Computing
|
Sigma Computing develops cloud-based analytics and business intelligence software for data exploration and analysis. The company provides a spreadsheet-style interface that allows users to work with large datasets using familiar formulas, tables, and reporting workflows. Its platform supports live data analysis, dashboard creation, embeddedanalytics, workflow automation, and collaborative data applications. Sigma Computing also offers AI-powered capabilities for querying data, building applications, and integrating machine learning models within analytics processes. The platform connects directly to cloud data infrastructure, helping teams manage, visualize, and interact with operational and business data without requiring data movement or coding expertise. | $264M / Series D / May 16, 2024 | |
Cover Genius
|
Cover Genius provides an insurance distribution platform designed to protect the customers of e-commerce companies. Its products feature integrated end-to-end insurance and warranty capabilities and offer dynamic product recommendations and pricing optimization, while also undertaking the payment of a customer's claim in real-time, enablingcustomers to access increased protection against any uncertainty.The company was founded in 2014. | $80M / Series E / May 15, 2024 | |
Taptap Send
|
Taptap Send is an app that lets immigrants send money back home to Africa instantly and at very low prices. Since launching in summer 2018, it has already moved hundreds of millions of dollars and reached hundreds of thousands of customers. It is live in seven European countries, and support payments into Ivory Coast, Senegal, Mali, Ghana, Guinea,Cameroon, Bangladesh, Kenya, Madagascar, Zambia, Vietnam, and DRC, with more countries launching soon | $65M / Series B / Dec 20, 2021 | |
Zeller
|
Zeller enables business owners to accept payments, manage their finances, and pay recipients fast.Finding integrated financial solutions to help the business thrive often requires weaving together multiple products from different providers. While a small group of large enterprises enjoy the privilege of financial solutions tailored for theirspecific needs, the vast majority of Australian businesses are underserved due to a lack of innovation, disparate providers, opaque pricing, and restrictive contracts. Zeller combines the tools for the business needs to accelerate cash flow. From accepting payments, to managing finances, to paying recipients fast; by bringing every tool together into one connected ecosystem, they help reduce the time spent on finding providers, completing long applications, onboarding, and getting set up. They do this through a simple, fast online sign-up process, and no contract necessary. | $37.9M / Series A / Jun 23, 2021 |
Co-Investors
About Spark Capital
Spark Capital is an early-stage venture capital firm that invests in exceptional products and the creative individuals behind them. Known for embracing risk and a unique approach, Spark Capital has backed companies like Twitter, Discord, Anthropic, Cruise, Niantic, Oculus, Warby Parker, and Tumblr. Recognizing that there are no set playbooks orformulas for success, the firm supports founders in achieving success on their own terms. Spark Capital invests across all sectors and stages, operating out of San Francisco, Boston, and New York City.
Spark Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Clay Fisher
General Partner
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Alexander Finkelstein
Co-founder & General Partner
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Bijan Sabet
Co-Founder and General Partner
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Fraser Kelton
General Partner
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James Kuklinski
General Partner, Growth
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FAQ
What does James Kuklinski invest in?
James Kuklinski invests primarily in FinTech, Financial Services and Payments startups, most often at Series B and Series D stage. Most of the 8 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 James Kuklinski last invest?
The most recent investment recorded for James Kuklinski closed in Aug 2026. Shizune tracks 8 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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