Grant Street Group Tech Stack

Cloud platform for government tax collection, e-payments, and financial auctions

Software Development Pittsburgh, PA 201–500 employees Founded 1997 Privately Held

Grant Street Group operates mission-critical payment and tax infrastructure serving thousands of U.S. government entities. The tech stack reflects a mature, polyglot backend (Java, C++, Python, Go) paired with modern frontend tooling (Vue, React, TypeScript), suggesting deep legacy integration work alongside incremental modernization. Active hiring leans engineering-heavy (6 of 11 roles), concentrated in mid and senior levels, while pain-point data reveals heavy lifting around legacy tax data conversion and revenue analytics — indicating they're scaling both platform capacity and GTM instrumentation.

Tech Stack 42 technologies

Core StackJavaScript Vue React Jest Playwright TypeScript Webpack Vite Stripe Python Java C++ C# Ruby Go MySQL PostgreSQL jQuery RabbitMQ Apache NiFi OpenAPI Windsurf Perl Ajax Ubuntu Exasol macOS Ingenico Verifone OpenVPN+12 more

What Grant Street Group Is Building

◆Challenges

Bad customer data
Legacy tax data conversion
Inadequate data-driven decision making
Lack of actionable revenue insights
Lack of metrics-driven culture
Complex high-impact deals
Rfp-driven sales cycles
Complex long sales cycles
Marketing engine keeping pace
Clean data alignment between marketing and sales

▲Active Projects

Migrate clients to taxsys
Reverse-engineer legacy tax data
Scalable analytics dashboards
Predictive forecasting models
Pipeline health views
Expanding footprint with government clients
Marketing measurement foundation
Marketing engine
Integrated campaigns
Implementing saas solutions for government agencies

Hiring Activity

Accelerating10 roles · 7 in 30d

Department

Engineering

Data

Marketing

Sales

Seniority

Mid

Senior

Junior

Manager

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About Grant Street Group

Grant Street Group builds cloud-based software for government agencies managing tax collection, e-payment processing, and financial auctions. The company serves over 6,800 government and financial entities across the U.S., processing over $20 billion in annual payment volume through PaymentExpress and handling two-thirds of Florida's property tax collection through TaxSys. Founded in 1997 and based in Pittsburgh, the 201–500 person organization is privately held. Core products span tax billing systems (TaxSys), vehicle and vessel registration renewals (RenewExpress), payment processing (PaymentExpress), and a financial auction marketplace that has facilitated over $13 trillion in transactions. Sales are RFP-driven with long cycles typical of government procurement.

HeadquartersPittsburgh, PA

Company Size201–500 employees

Founded1997

Hiring MarketsUnited States

Frequently Asked Questions

What is Grant Street Group's tech stack?

Backend: Java, C++, Python, Go, Ruby, Perl. Frontend: JavaScript, Vue, React, TypeScript. Infrastructure: PostgreSQL, MySQL, Exasol, RabbitMQ, Apache NiFi, Ubuntu, OpenVPN. Payment: Stripe, Ingenico, Verifone terminals.

What is Grant Street Group working on?

Primary projects: TaxSys client migration, legacy tax data reverse-engineering and conversion, scalable analytics dashboards, predictive forecasting models, pipeline health visibility, expanding government client footprint, and marketing measurement infrastructure.

How this profile is built

Grant Street Group's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.