Insights

Strategic funding PSL is backed by a broad network of 14 VCs and 50 angel investors across multiple regions, indicating potential for co-investment opportunities, strategic partnerships, and opportunities to introduce portfolio services or launch support for startups in PSL's ecosystem.

Portfolio breadth The company has launched multiple ventures across diverse sectors (tax tech, ad tech, real estate, immigration tech), suggesting demand for end-to-end startup support, accelerator-style programs, and enterprise-grade solutions that can be offered to their portfolio teams.

Tech stack PSL relies on cloud, web, and communication tools (AWS, Google Workspace, CloudFlare, etc.), presenting cross-sell opportunities for security, infrastructure optimization, collaboration tooling, and developer-centric platforms aligned with their startup needs.

Growth signals Recent seed investments and notable partnerships (Blue Pill, Boundless with JPMorgan Chase, Fortive spin-out Certivo) indicate active fundraising and M&A-adjacent activity; this paints a market window for sales of go-to-market, AI, compliance, and scalability services to a fast-growing portfolio.

Seattle/PNW focus PSL’s Seattle base, regional investor network, and events like Seattle Tech Week highlight a regional emphasis; sales motions could tailor localized events, on-site demos, and region-specific partnerships to access founders and early-stage teams efficiently.

Similar companies to Pioneer Square Labs

Pioneer Square Labs Tech Stack

Pioneer Square Labs uses 8 technology products and services including Amazon Web Services, Google Workspace, Mailgun, and more. Explore Pioneer Square Labs's tech stack below.

Media & News

Pioneer Square Labs's Email Address Formats

Pioneer Square Labs uses at least 4 email formats:
Pioneer Square Labs Email FormatsExamplePercentage
First@psl.comJohn@psl.com
54%
Last@psl.comDoe@psl.com
28%
FLast@psl.comJDoe@psl.com
11%
First.Last@psl.comJohn.Doe@psl.com
7%

Frequently Asked Questions

What is Pioneer Square Labs's phone number?

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You can contact Pioneer Square Labs's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Pioneer Square Labs's official website and social media links?

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Pioneer Square Labs's official website is psl.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Pioneer Square Labs generate?

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As of August 2026, Pioneer Square Labs's annual revenue is estimated to be $25M - $50M.

What is Pioneer Square Labs's NAICS code?

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Pioneer Square Labs's NAICS code is 5112 - Software Publishers.

How many employees does Pioneer Square Labs have currently?

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As of August 2026, Pioneer Square Labs has approximately 34 employees across 4 continents, including North America, Asia and Europe. Key team members include Managing Director: T. M. and Building Ai Agents: S. S. Explore Pioneer Square Labs's employee directory with LeadIQ.

What industry does Pioneer Square Labs belong to?

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Pioneer Square Labs operates in the Software Development industry.

What technology does Pioneer Square Labs use?

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Pioneer Square Labs's tech stack includes Amazon Web Services, Google Workspace, Mailgun, CloudFlareJS, Slick, Webflow, Vimeo and Twitter.

What is Pioneer Square Labs's email format?

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Pioneer Square Labs's email format typically follows the pattern of First@psl.com. Find more Pioneer Square Labs email formats with LeadIQ.

How much funding has Pioneer Square Labs raised to date?

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As of August 2026, Pioneer Square Labs has raised $28M in funding. The last funding round occurred on Jan 18, 2018 for $15M.

When was Pioneer Square Labs founded?

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Pioneer Square Labs was founded in 2015.
Pioneer Square Labs logo

Pioneer Square Labs

Software DevelopmentWashington, United States11-50 Employees

Pioneer Square Labs is a Seattle-based software development studio that creates and launches technology startups. From its Seattle base, PSL nurtures a portfolio of ventures that move from concept to market, including LumaTax, Ad Lightning, JetClosing, and Boundless. These ventures address practical needs across diverse markets: helping small business owners file sales tax, improving ad quality and user experience for publishers and ad platforms, simplifying real estate title and settlement, and guiding immigrants through their journeys with information and support. 

 PSL operates within the software development sector and is positioned as a studio that advances early ideas through launch as new companies. Located in Seattle, PSL is a small-to-mid sized team. A notable development in 2025 was PSL's collaboration with Boundless Immigration and JPMorgan Chase to host an event during Seattle Tech Week.

Section iconCompany Overview

Phone number
Website
psl.com
NAICS Code
5112 - Software Publishers
Founded
2015
Employees
11-50

Section iconFunding & Financials

  • $28M

    Pioneer Square Labs has raised a total of $28M of funding over 3 rounds. Their latest funding round was raised on Jan 18, 2018 in the amount of $15M as a Series B.

  • $25M - $50M

    Pioneer Square Labs's revenue is estimated to be in the range of $25M - $50M

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