Shift4 Tech Stack

Payment processing platform for hospitality, events, and retail

Financial Services Center Valley, Pennsylvania 1,001–5,000 employees Public Company

Shift4 processes billions of transactions annually across hospitality, dining, events, and retail. The stack reflects a mature payments infrastructure (Java, Spring Boot, RabbitMQ, Aerospike) layered with modern frontend tooling (React, Next.js, TypeScript) and enterprise operations (Workday, NetSuite, Oracle Fusion). Active projects around platform modernization and technical debt reduction, paired with hiring concentrated in sales (43 roles) over engineering (14), signal a company scaling go-to-market velocity while addressing legacy system complexity.

Tech Stack 100 technologies

Core StackJava RabbitMQ GitLab Fortinet Cisco AWS NetSuite Okta MuleSoft Slack Workday Node.js Python JavaScript TypeScript React Next.js Excel Spring Boot Hazelcast Aerospike Microsoft Office Google Docs FortiGate Workday Recruiting Oracle Fusion Blackline Cisco NX-OS Cisco IOS F5+67 more

AdoptingSwiftUI

What Shift4 Is Building

◆Challenges

Technical debt reduction
Fast pace sales cycle
Complex payment systems
Simplifying complex payments ecosystems
Increasing dcc revenue
Redundancies
Fraud and chargebacks
Automating manual payout processes
Optimising payment processes
Platform modernization

▲Active Projects

Software/hardware beta testing
New monitoring structures for merchant activity
Sell skytab payment solutions
Platform modernization
Technical debt reduction
Employee listening strategies
Hr transformation initiatives
Enterprise account installations
Optimise payment processes
Customer insights formalization

Hiring Activity

Steady120 roles · 45 in 30d

Department

Sales

Support

Engineering

Ops

Finance

Design

Product

Seniority

Senior

Junior

Mid

Lead

Director

Manager

Intern

Notable leadership hires: Channel Sales Director

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About Shift4

Shift4 is a public payments processor (NYSE: FOUR) handling commerce transactions for hundreds of thousands of businesses globally, from small restaurants to major event venues. The platform spans payment acceptance, merchant services, PCI compliance, and integrations across e-commerce, hospitality, and experience-driven verticals. Engineering operates a distributed, event-driven architecture on AWS, while operations scale merchant onboarding, support, and enterprise account management across 10+ countries. Current focus includes reducing technical debt, modernizing the core platform, and automating manual payout workflows to unlock higher margins.

HeadquartersCenter Valley, Pennsylvania

Company Size1,001–5,000 employees

Hiring MarketsMalta, Canada, Israel, United States, United Kingdom, Lithuania, Colombia, Spain

Frequently Asked Questions

What tech stack does Shift4 use?

Shift4 uses Java, Spring Boot, RabbitMQ, and Aerospike for backend services; React, Next.js, TypeScript, and Node.js for frontend; AWS for infrastructure; Okta for identity; MuleSoft for integrations; and Workday, Oracle Fusion, and NetSuite for operations.