ACI Worldwide Tech Stack

Real-time payments orchestration platform for banks, merchants, and billers

Software Development Elkhorn, Nebraska 1,001–5,000 employees Public Company

ACI Worldwide operates a mature payments software stack built on Java, Spring, Oracle, and SQL Server, now shifting toward cloud-native infrastructure (Azure, Atlassian Cloud) and adopting ISO 20022 standards—a move tracking real-time settlement modernization. Engineering-heavy hiring (74 open roles) is concentrated in senior and principal levels, suggesting capability gaps in cloud architecture and ML pipeline development rather than junior scaling. Active projects span real-time payment processing, microservices architecture, merchant fraud detection, and predictive models, while internal friction centers on legacy system modernization and real-time data synchronization across heterogeneous systems.

Tech Stack 106 technologies

Core StackSalesforce Java SQL Server C++ Angular Hibernate Jira Oracle Active Directory Windows Server Azure AD Python Linux PowerShell Spring Boot Spring Framework Jakarta EE SQL Microsoft Office DNS Group Policy Kerberos NTLM LDAP Active Directory Federation Services Public Key Infrastructure Azure AD Connect Microsoft Entra bash Azure+71 more

AdoptingSalesforce ISO 20022 Atlassian Cloud

ReplacingJira Confluence

What ACI Worldwide Is Building

◆Challenges

Product security compliance
Modernizing legacy systems
Complex technical challenges
Scaling payment processing
Capacity planning
Cost efficient cloud infrastructure
Process inefficiencies
Technical debt reduction
Increase brand and company visibility
Real-time data synchronization between heterogeneous systems

▲Active Projects

Real-time payment processing
Next-generation cloud-native payment platform
Prm solution adoption
Scalable data pipelines
Merchant fraud management product
Observability and monitoring tools
Predictive models for customers
State-of-the-art predictive models for financial applications
Ml pipeline development
Scalable microservices architecture

Hiring Activity

Accelerating140 roles · 95 in 30d

Department

Engineering

Sales

Product

Support

Data

Ops

Finance

Marketing

Seniority

Senior

Principal

Manager

Mid

Director

Intern

Junior

Notable leadership hires: Sales Director

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About ACI Worldwide

ACI Worldwide is a publicly traded payments technology company with nearly 50 years in the space. They serve banks, merchants, and billers with software for payments orchestration, real-time processing, fraud detection, and infrastructure modernization. The company operates globally with offices across North America, Europe, Middle East, and Asia-Pacific, and is currently scaling engineering capacity in Colombia, Romania, India, and Australia alongside core US operations. Their product stack spans payment processing, card fraud prevention, mobile payments, and merchant solutions, with active investment in cloud migration and next-generation platform capabilities.

HeadquartersElkhorn, Nebraska

Company Size1,001–5,000 employees

Hiring MarketsColombia, United States, Romania, United Kingdom, South Africa, Ireland, India, Australia

Frequently Asked Questions

What technology does ACI Worldwide use for payments?

Core stack: Java, Spring Boot, Oracle, SQL Server. Infrastructure: Azure, Active Directory, Linux. Fraud detection and real-time processing are built on this foundation. They're adopting ISO 20022 standards for settlement.

Where is ACI Worldwide headquartered?

Elkhorn, Nebraska. It is a public company with 1,001–5,000 employees and operates a global presence with hiring in 12 countries including US, UK, Ireland, India, Australia, and Middle East.