Sr Systems Engineer
ACI Worldwide
Limerick, IE, IE
15d ago


Implements, configures and plays a lead role in the design of complex systems for internal and external customers.

Assists in performing analysis on existing systems as well as system maintenance.

Determines system specifications, input / output processes and working parameters for hardware / software compatibility.

Coordinates design of subsystems and integration of total system. Identifies, analyzes and resolves program support deficiencies.

Develops and recommends corrective actions.


  • Standard work environment
  • Majority of time spent on PC (Phys. Req.)
  • Travel required, may be domestic or international
  • Weekend and off-hours support may be required

  • Manages large scale Hadoop cluster environments, handling all Hadoop environment builds, including design, capacity planning, cluster setup, performance tuning and ongoing monitoring.
  • Performs day-to-day support for fraud application and monitoring tasks for assigned systems.
  • Works with internal and external customers and vendors to resolve technical system problems in a timely manner with a primary focus on complex problems.
  • Utilizes proven systems and scripting skills to execute on highly complex tasks related to hardware and software technology component analysis, integration, and incident and problem resolution.
  • Researches and evaluates new technologies and software products to determine feasibility and desirability of incorporating their capabilities within the company's products.
  • Assists in the formulation and execution of test plans for Proof of Concepts.
  • Researches and recommends innovative, and where possible, automated approaches for system administration tasks. Identifies approaches that leverage our resources, provide economies of scale, and simplify remote / global support issues.
  • Supports development, QA and product teams by providing high-level analysis and AOD environment based design reviews, performance, scalability and benchmark test guidance, and subject matter expertise in technology and design.
  • Perform other duties as assigned.


  • Ability to participate in an on call rotation, which may include night and weekend hours.
  • Bachelor's degree in Computer Science or equivalent experience.
  • 5+ years of technical experience in product architecture and / or production IT environments.
  • Previous experience in designing and / or implementing systems with a focus on scalability and high-availability.
  • Experience with configuring and troubleshooting development and production environments.
  • Understanding of Hadoop design principals, cluster connectivity, security and the factors that affect distributed system performance.
  • Demonstrated experience in Hortonworks Hadoop ecosystems and ability to manage : Ambari, HDP, HDF, Hive, Solr, Kafka, Kylin, Kudu, zookeeper, spark
  • Solid understanding of automation tools (Puppet, Chef, Ansible, Liquibase, etc.)
  • Experience with at least one if not most of the following languages; Python, Perl, Ruby, or Bash scripting.
  • Experience with OpenShift, Docker, Kubernetes and other containerized applications.
  • Experience with various operating systems specifically Oracle Solaris, Linux and Windows.
  • Experience with a variety of databases and a solid understanding of administration tasks.
  • Strong communication skills both verbal and written.
  • Strong documentation experience.

  • Experience with highly distributed systems, focusing on application support on these systems.
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