How ZeroEyes Reduced Vendor Management Costs by 50% While Gaining Complete Visibility with Stackpack
Learn how ZeroEyes gained real-time vendor oversight, reducing costs and centralizing vendor management.
- 50%+ cost reduction in vendor management platform expenses
- 100% visibility achieved across all corporate card users
- $15.1M in vendor spend managed through Nov ‘25
“Stackpack gave us complete visibility into every vendor relationship across our entire organization. Now we can actually see patterns, catch duplicates, and make informed decisions about our vendor ecosystem." – Matt Grainer, CFO at ZeroEyes
About
Founded in 2018 by Navy SEALs, ZeroEyes provides AI-powered, human-verified weapons detection technology to schools, businesses, and government facilities, protecting thousands of buildings, including U.S. Department of Defense sites and Fortune 500 campuses. The company raised $53 million in Series B funding in 2024, bringing total funding to over $100 million, and is the first video analytics platform to hold the Department of Homeland Security's SAFETY Act Designation.
The Problem
"Stackpack gave us complete visibility into every vendor relationship across our entire organization. Now we can actually see patterns, catch duplicates, and make informed decisions about our vendor ecosystem. "
Distributed Spend Created Blind Spots Across Growing Operations
As ZeroEyes scaled its operations over four years, CFO Matt Grainer recognized an opportunity to optimize the company's increasingly complex vendor ecosystem. With corporate cards distributed to managers throughout the organization, the company had empowered teams to move quickly — but this agility had created gaps in vendor oversight.
The distributed spend model reflected ZeroEyes' growth-oriented culture. While the company maintained strict approval processes for major software purchases exceeding $50,000, smaller recurring charges under $5,000 required only manager-level approval — a structure that enabled departmental autonomy. "Those $50, $60, $100 monthly charges creep up here and there," Matt observed. "While we have rigid approval processes for larger software purchases, smaller expenses would fly under the radar."
Like many fast-growing companies, ZeroEyes tracked vendors using familiar tools — Excel spreadsheets for spend analysis, email threads for contract storage, and manual reviews to spot patterns. As the vendor ecosystem grew more complex, these processes became increasingly time-intensive.
This decentralized approach supported ZeroEyes' rapid expansion, enabling teams to acquire tools independently without bureaucratic delays. But this autonomy led to overlapping purchases — a natural result of empowered teams solving their own challenges, but one that created opportunities for strategic optimization at the organizational level.
Matt saw an opportunity to bring more sophistication to vendor management. He had previously implemented a spend management tool, but the platform wasn't delivering the visibility ZeroEyes needed. That platform’s strength lay in negotiating contracts with major software vendors such as Slack or Zoom. But as a government tech company, ZeroEyes' vendor ecosystem extended far beyond standard SaaS offerings. The platform simply couldn't surface the full picture of operating expenses across their specialized vendor base. "What we were paying was expensive for what we were getting," Matt explained.
As CFO, Matt needed a solution that could match ZeroEyes' operational sophistication, identify potential consolidation opportunities, and integrate seamlessly with existing workflows — without enterprise-level pricing.
After evaluating the market, Matt identified Stackpack’s AI-powered vendor management platform as the solution that would deliver comprehensive visibility across corporate spend at a price point appropriate for ZeroEyes' growth stage.
“Small charges were creeping up across the organization, and without visibility into that distributed spend, we were essentially flying blind on a significant portion of our vendor costs."
The Solution
Complete Visibility Achieved Through Unified Vendor Data
When Matt switched to Stackpack, onboarding proved refreshingly straightforward. Stackpack's team made themselves immediately available from day one, establishing a partnership approach that would characterize the ongoing relationship. The platform required only "a couple of turns" to master, with no significant learning curve or extended implementation period.
Stackpack integrated seamlessly into Matt's existing workflow, becoming part of his regular financial review cycle. What previously required manual data aggregation from Excel spreadsheets, accounting systems like QuickBooks Online, and data sources now flows automatically into Stackpack's consolidated dashboard. Instead of spending time gathering data, Matt focuses on analyzing patterns and optimization decisions.
Unlike platforms that focus only on major software vendors, Stackpack automatically categorizes every vendor across ZeroEyes' entire operating expenses — from specialized government-tech suppliers to standard SaaS tools. The platform’s automated cost spike detection monitors for spend increases and new vendors and captures every charge from corporate cardholders, making those "$50, $60, $100 monthly charges" immediately visible. This always-current view directly addresses the blind spots created by ZeroEyes' distributed spend model.
Through the platform's vendor spend comparison and analysis features, Matt gained a new level of visibility into cross-department patterns. He quickly identifies where different teams are purchasing similar tools or where subscriptions have accumulated without oversight. Stackpack's waste identification and cost optimization recommendations specifically flag duplicate vendors and overlapping services, enabling more accurate run rate forecasting.
This enhanced financial visibility directly supports ZeroEyes' growth objectives. Clearer insights into committed spend and vendor obligations empower Matt to make more confident decisions about strategic investments and resource allocation, maintaining lean operations while expanding their customer base.
Most importantly, Stackpack delivers this comprehensive visibility at a price point that aligns with ZeroEyes' growth stage. The platform costs less than half of what the company had been paying for the spend management tool they were using before freeing up capital for core business investments.
Stackpack’s sophisticated vendor intelligence enables ZeroEyes to maintain enterprise-grade financial controls without enterprise-level overhead, supporting their mission to become the industry standard for AI-powered weapons detection.
“I could finally see everything — every subscription, every duplicate service, every department's spend patterns. Stackpack paid for itself just in the clarity it provided, even before we started cutting redundant vendors.”
The Outcome
100% Vendor Visibility Achieved Across All Corporate Card Spend
With Stackpack, ZeroEyes transformed vendor management from reactive oversight to proactive optimization — reducing operational overhead while positioning the company for sustainable growth. They now maintain complete visibility across all vendor relationships, with Matt effortlessly monitoring spending patterns that were previously hidden in departmental silos.
The results speak for themselves:
- 50%+ cost reduction in vendor management platform expenses
- 100% visibility achieved across all corporate card users
- $15.1M in vendor spend managed through Nov ‘25
While ZeroEyes continues company-wide consolidation efforts, Matt has already eliminated several redundant subscriptions. Beyond cost-cutting, the platform has become central to strategic planning — Matt used Stackpack's real-time spend data to build out ZeroEyes' 2026 budget, giving him confidence in forecasts that previously relied on manual data pulls. For a CFO focused on capital efficiency during a growth year, that decision-making clarity is as valuable as the direct savings.
Looking forward, ZeroEyes plans to leverage Stackpack's evolving capabilities as the platform releases new features. Matt remains committed to the bi-weekly review cadence that has become integral to his financial operations, using each session to identify new optimization opportunities across the company's growing vendor ecosystem.
“As we scale toward becoming the standard for AI-powered security, Stackpack ensures our vendor operations can grow just as intelligently.”
One Platform. Total Vendor Visibility.
See how ZeroEyes reduced costs by 50% while gaining visibility with Stackpack.