IBM Mainframe CICS Support Engineer

Tata Consultancy Services; Hong Kong; On-site; HKD 900,000 - 1,200,000; Full time

Job summary

Tata Consultancy Services in Hong Kong leads critical IBM Z and CICS operations for APAC, delivering highly available mainframe services and robust disaster recovery. The role focuses on installation, customization and ongoing maintenance of IBM Z products, with strong emphasis on security, performance, and incident resolution.

Candidates should have hands-on CICS, z/OS, DB2 and MQ experience, and be able to work in a multicultural, agile environment.

Qualifications

• University degree in Computer Science, Information Technology or a related discipline.
• Strong proficiency in IBM Z mainframe system and middleware technologies, including CICS, z/OS, DB2 and MQ.
• Hands‑on experience with product installation, customization and maintenance of CICS Transaction Server for z/OS and related CICS tools.
• Knowledge of RACF security tools and performance monitoring using Omegamon, CICS Performance Analyzer, RMF and SMF.
• Excellent problem determination skills, with the ability to detect, investigate and control processing anomalies or system errors.
• English is required. Cantonese is preferred for local team communication. Mandarin is beneficial but not mandatory.
• Sound analytical, communication and interpersonal skills; proactive, self‑motivated and able to work collaboratively in an agile, multicultural environment.
• No regular shift requirement; participation in a rotational maintenance support arrangement is required.
• Maintenance windows are typically Sunday 00:00–06:00, approximately once every 2 weeks on rotation, generally supported remotely with time‑off in lieu after overnight support.

Responsibilities

• Handle product installation, customization and maintenance of IBM Z products and tools, including CICS Transaction Server for z/OS, z/OS Connect EE, CAFC, CICS JVM, CICS Performance Analyzer and CICS Configuration Manager.
• Manage system performance, reliability and availability against service level agreements using tools such as Omegamon, CICS Performance Analyzer, MOI, Splunk and AppDynamics.
• Determine and resolve issues across managed systems, including incident investigation, problem resolution and root‑cause analysis.
• Work closely with global application teams to deliver projects, consultancy services and platform standardisation initiatives.
• Provide operations support, including on‑call and after‑hours support during approved maintenance windows.
• Automate operational processes, including CI/CD pipelines, system changes, housekeeping, monitoring, alerting, capacity management and capacity planning.
• Ensure compliance with security standards and operational risk requirements.
• Develop, manage and maintain comprehensive disaster recovery plans for all managed systems.
• Create and maintain installation, configuration and administration documentation.

Skills

English proficiency

Problem solving

Communication

Team collaboration

Agile work environment

Multicultural adaptability

Education

Bachelor's degree in Computer Science or IT

Tools

IBM Z

z/OS

CICS Transaction Server for z/OS

z/OS Connect EE

CAFC

CICS JVM

CICS Performance Analyzer

CICS Configuration Manager

DB2

MQ

RACF

Omegamon

RMF

SMF

Splunk

AppDynamics

DevOps

CI/CD

Ansible

Jenkins

GitHub

REXX

CICS tools

Job description

Join Tata Consultancy Services, Asia Pacific and be part of an organization committed to sustainable development for our future. TCS follows the Tata group philosophy of building sustainable businesses that are rooted in the community and demonstrate care for the environment. Our unique values position us to combine a purpose-driven worldview with digital innovation, collaborating with customers, communities and governments to lead and shape innovative solutions for a sustainable future. TCS has been carbon neutral in its operations across 11 countries, 12 delivery centres and 18 offices in Asia Pacific since 2022. This is only the initial stage in TCS’ journey as we strive to achieve long-term net zero emissions by 2030.

Corporate sustainability is embedded in our triple-bottom-line, focusing on people, the planet, and our purpose. Our offices are designed with eco-friendly features that significantly reduce our carbon footprint and enhance energy efficiency. We actively champion green initiatives, such as promoting paperless operations, implementing energy-efficient practices, and fostering employee engagement in sustainability efforts. When you become part of the TCS family, you will play an essential role dedicated to innovation, excellence, and crafting a brighter, greener future together. Join us and be a part of our mission to drive sustainability through technology and talent at Tata Consultancy Services, APAC today

Required Technical Skill Set

IBM Z, z/OS, CICS Transaction Server for z/OS, z/OS Connect EE, CICS Application File Control (CAFC), CICS JVM, CICS Performance Analyzer, CICS Configuration Manager, DB2, MQ, RACF, Omegamon, RMF, SMF, Splunk, AppDynamics, DevOps, CI/CD, automation, Ansible, Jenkins, GitHub, REXX, production support, performance management, disaster recovery and operational risk compliance

Desired Experience Range

10+ years of IBM Mainframe / CICS support experience. Candidates with fewer years of experience but strong hands‑on CICS expertise will also be considered.

Desired Competencies (Technical/Behavioral Competency)

Must-Have

• University degree in Computer Science, Information Technology or a related discipline.
• Strong proficiency in IBM Z mainframe system and middleware technologies, including CICS, z/OS, DB2 and MQ.
• Hands‑on experience with product installation, customization and maintenance of CICS Transaction Server for z/OS and related CICS tools.
• Knowledge of RACF security tools and performance monitoring using Omegamon, CICS Performance Analyzer, RMF and SMF.
• Excellent problem determination skills, with the ability to detect, investigate and control processing anomalies or system errors.
• English is required. Cantonese is preferred for local team communication. Mandarin is beneficial but not mandatory.
• Sound analytical, communication and interpersonal skills; proactive, self‑motivated and able to work collaboratively in an agile, multicultural environment.
• No regular shift requirement; participation in a rotational maintenance support arrangement is required.
• Maintenance windows are typically Sunday 00:00–06:00, approximately once every 2 weeks on rotation, generally supported remotely with time‑off in lieu after overnight support.

Good-to-Have

• Experience with z/OS Connect EE, CICS Application File Control (CAFC), CICS JVM, CICS Performance Analyzer and CICS Configuration Manager.
• Banking or financial services industry experience, preferably in enterprise production and mission‑critical systems environments.
• Knowledge of DevOps principles and CI/CD implementation, including z/OSMF, Ansible automation framework, Jenkins and GitHub.
• REXX programming skills and experience automating system changes, housekeeping, monitoring, alerting and capacity planning activities.
• Open to both senior and mid-level professionals with strong hands‑on platform support experience.
• Existing Hong Kong-based candidates are preferred.

Role descriptions / Expectations from the Role

• Handle product installation, customization and maintenance of IBM Z products and tools, including CICS Transaction Server for z/OS, z/OS Connect EE, CAFC, CICS JVM, CICS Performance Analyzer and CICS Configuration Manager.
• Manage system performance, reliability and availability against service level agreements using tools such as Omegamon, CICS Performance Analyzer, MOI, Splunk and AppDynamics.
• Determine and resolve issues across managed systems, including incident investigation, problem resolution and root‑cause analysis.
• Work closely with global application teams to deliver projects, consultancy services and platform standardisation initiatives.
• Provide operations support, including on‑call and after‑hours support during approved maintenance windows.
• Automate operational processes, including CI/CD pipelines, system changes, housekeeping, monitoring, alerting, capacity management and capacity planning.
• Ensure compliance with security standards and operational risk requirements.
• Develop, manage and maintain comprehensive disaster recovery plans for all managed systems.
• Create and maintain installation, configuration and administration documentation.