Working at ACI Worldwide |

ACI Worldwide Overview

Naples, FL (US)
1001 to 5000 employees
Company - Public (ACIW)
Computer Hardware & Software
₹100 to ₹500 billion (INR) per year

Company Updates

  • Rawan Shawar named a ‘Rising Star’ by WIP In February, Rawan Shawar, a Senior Software Engineer based in Florida, U.S.A., received the ‘Rising Star’ award at the U.S. Women in Payments (WIP) Symposium in Washington, D.C. Rawan was selected for the award, which was one of six different U.S. WIP awards presented at the event, in recognition of her technical excellence, leadership capabilities, mentorship and advocacy efforts. “It is humbling and inspiring to be recognized at the U.S. Women in Payments Awards alongside women who innovate, educate and have contributed so much to the industry,” said Rawan. Since joining ACI, Rawan has held numerous roles in the Product Development organization, and she currently leads a team of engineers responsible for ACI’s UP Retail Payments solution. Additionally, Rawan is actively involved in ACI’s Women’s Initiative program and is a mentor for Money20/20’s ‘Rise Up’ academy.

  • ACI Omaha introduces students to the world of payments ACI Omaha recently hosted six students from the University of Nebraska Omaha’s Information Technology department for a one-day event to showcase ACI’s solution offerings and the company’s role in the global payments industry. All six students were members of UNO’s Association for Computing Machinery-Women (ACM-W) chapter and had previously volunteered at one of ACI Omaha’s Coding for Girls camps. During their day on site, the students were guided on a tour of ACI’s Omaha facilities before participating in seven engaging, informative sessions led by Product Development, Human Resources and Marketing leaders. “The goal of the day was to introduce these young minds to the world of payments technology, our company and the solutions we provide our customers,” explained Sampy Gajre, Senior Global Talent Acquisition Partner. “We covered ACI’s history, our strategy and the engineering of our products as well as internship and job opportunities available at ACI.”

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ACI Worldwide – Why Work With Us?


ACI combines a global perspective with local presence to tailor solutions for each customer. Our proven products, domain expertise and 40 years of experience have earned us a position as trusted provider of gold standard payments solutions.

With more than 4,500 employees worldwide and offices in principal cities around the globe, ACI now has one of the most diverse and robust product portfolios in the industry, with application software spanning the length of the payments value chain.

Founded in 1975

ACI was founded in Omaha, Nebraska, US in 1975 to develop software for communications applications making use of the new NonStop computers from the then Tandem organisation. Many of the early projects involved building systems to handle ATMs, front ending the bank core banking systems, which led to the launch of the first product, BASE24, in 1982.

Over time that product was expanded to service transactions from other channels such as POS terminals and branch systems. And the product portfolio was expanded to cover more functions around card transactions such as clearing and settlement and fraud detection. As the product portfolio expanded, the hardware utilised for these products was also expanded to include suppliers such as IBM, HP, Stratus and SUN.

In the 1990s ACI's product range expanded to cover wholesale banking payments with solutions for wire transfers and ACH transactions leading to the acquisition of IntraNet in 1998, which expanded the product range with the Money Transfer System product.

International expansion

Early customers were all in the US. In 1981 an Australian bank became a customer starting an international growth path. By 1986, ACI had 131 customers in 14 countries. Supporting this international growth was the development of a series of offices and partners around the world.

Since 1995, ACI has been a public company traded on NASDAQ, initially under the name Transaction Systems Architects (TSA), and since July 2007 under the name ACI Worldwide, Inc. (ACIW). Prior to that ACI had periods under US West and Tandem ownership and as a private company.

During the 2000’s ACI continued to expand our product offerings to include online banking, card & merchant management solutions and retailer solutions. In 2008, ACI introduced the agile payments strategy to offer the market ‘s most unified payments solution.

Experience, expertise

Today's ACI builds on 40 years of experience of delivering systems to process payments for banks, processors and retailers around the world. ACI's reputation is based upon the success of products that have consistently provided stability, scalability and reliability. Customers have come to trust ACI because of these products and because of ACI’s expertise and dedication.

With the acquisition of S1 Corporation in February 2012, ACI further expanded its market position and global presence with enhanced scale, breadth and additional capabilities to deliver solutions across the global spectrum of financial institutions, processors and retailers.

And the March 2013 acquisition of Online Resources Corporation saw ACI further strengthen its leadership in online banking and payments and expand its offerings to credit unions and community banks. The acquisition of Official Payments in November 2013 saw ACI increase the reach of its bill pay offerings into federal, state and local governments, municipal utilities, higher education institutions and charitable giving organizations. 

In August 2014, ACI further strengthened its position in the payments risk management space with the acquisition of leading eCommerce and fraud prevention company Retail Decisions (ReD) .

ACI acquired leading global eCommerce payments solutions provider, PAY.ON in November 2015.   With PAY.ON, ACI bolstered end-to-end eCommerce payments capabilities, delivering the most complete omni-channel payments experience.

Today, ACI powers electronic payments for more than 5,000 organizations around the world.


Payment systems are what we do at ACI. They're what we have been doing for more than 40 years. Our employees have an unrivaled understanding of payment processes and how to improve them.

undefinedAt the core of your business

We believe that payments are a strategic source of income, differentiation and growth for banks, retailers and payment processors.

We implement systems that give you the ability to rapidly develop new payment services for your customers, quickly respond to changing circumstances and prevail over your competition.

Trusted globally

You'll find an ACI office or partner in every region of the world. We provide more than 5,600 banks, retailers, billers and processors with the broadest, most integrated suite of electronic payments software in the market, supported globally, 24/7. And we have a clear, continuous development roadmap delivering certainty for the future.

That is why 18 of the world's top 20 banks and more than 300 of the leading global retailers, rely on ACI payments software.

At ACI, we are achievers, collaborators, innovators. We come together from across the globe with a singular goal — to power global commerce with our innovative technology solutions. Join us as we drive payments at the speed of change.

How do we drive payments at the speed of change? Our employees tell the story best.


Who is ACI?

We are achievers, collaborators, innovators.

We enjoy the support and stability of a proven company along with the enthusiasm and entrepreneurial spirit of a startup.

We benefit from the diversity and expertise of our colleagues all over the world.

We work hard. And our dedication is rewarded with opportunities to learn, grow and build our careers by collaborating with the best and the brightest in the industry.

We are flexible in the way we work and dynamic as we respond to the monumental changes in the payments industry.

We come together with a singular goal — to power global commerce through our innovative technology. We are ACI. We drive payments at the speed of change.


ACI has a team of experts unmatched in the industry. And throughout our 40-year history, we’ve learned that collaboration across every level of the organization – from interns to tenured employees to our most senior managers – is key to our success and continued growth. 



ACI will lead the transformation of the global payments ecosystem to a real-time, any-to-any paradigm built on acclaimed intellectual property and delivered in the cloud by a team of highly dedicated and innovative payment professionals committed to our customers’ success.


We as ACI do business globally, respecting the language and culture where we operate. We are accountable, industrious, integrous, honest, and committed. These values are an intrinsic part of our employee culture and guiding principles.



ACI's Guiding Principles guide both strategic decisions and daily behavior to provide real value to our customers. 

As a company, we are laser-focused on delivering the right customer experience to each of our customers by living our Guiding Principles.

ACI Worldwide Reviews

  • Featured Review

    Helpful (3)

    "Best environment, Positive Vibes, Technical Geeks"

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Associate Software Engineer in Pune
    Current Employee - Associate Software Engineer in Pune
    Neutral Outlook
    Approves of CEO

    I have been working at ACI Worldwide full-time (Less than a year)


    No Dress code
    Positive Environment
    Good Management
    Various Non-Technical Fun Activities
    Great Domain work


    no cons
    the company environment is very productive

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ACI Worldwide Photos

ACI Worldwide photo of: Naples Headquarters
ACI Worldwide photo of: Birthday Fun
ACI Worldwide photo of: Diwali
ACI Worldwide photo of: Naples Princess Summer Cruise
ACI Worldwide photo of: Naples Princess Summer Cruise
ACI Worldwide photo of: Diwali celebration
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ACI Worldwide Interviews



Getting an Interview

Getting an Interview




  1. Featured Interview


    Software Engineer Interview

    Anonymous Employee
    Accepted Offer
    Positive Experience
    Difficult Interview


    I applied online. I interviewed at ACI Worldwide in March 2019.


    They have a good shaped interview process that can interview all aspects as nominees. HR personnel was really helpful and kind. I had 1 online coding interview and 2 technical interviews. Employees who interviewed me were really experienced and respectful ones.

    Interview Questions

    • They asked me about the different types of caching in hibernate   Answer Question
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ACI Worldwide Awards & Accolades

  • Best Online Payment Solution (Merchants), FStech/Retail Systems Payments, 2016
  • Ranked 18th on the international list of financial technology companies, IDC Financial Insights, 2016
  • Mike Rogers featured in inaugural "Trailblazers, Innovators and Disruptors" awards, SubPrime Auto Finance News, 2016
  • Ranked 16th in the Cloud Application Vendors list, Apps Runs the World, 2016
  • Awarded Best Payments Flexibility, Open Architecture, and Large Customer Base for Universal Online Banker, Aite Group's Cast Management Vendor Evaluation, 2016
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