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Computer Task Group

60 Computer Task Group Mainframe Systems Administrator Jobs Hiring Near You

Computer Task Group, Inc

iSeries Engineer

Phoenix, AZ · On-site

Administer, support, and optimize IBM i (AS/400 / iSeries) and Power Systems environments * Perform ... Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent ...

Computer Task Group, Inc

iSeries Engineer

Phoenix, AZ · Hybrid

Administer, support, and optimize IBM i (AS/400 / iSeries) and Power Systems environments * Perform ... Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent ...

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Computer Task Group Jobs Information

What is it like to work at Computer Task Group?

Computer Task Group (CTG) is a global IT consulting and staffing company that values collaboration, innovation, and customer satisfaction, fostering a dynamic and supportive work environment.

CTG operates with a team-based structure, offering opportunities for professional growth and development through training programs, mentorship, and cross-functional projects. The company's mission is to deliver high-quality IT solutions and services to clients across various industries, leveraging its global network and expertise.

Working at CTG may appeal to candidates seeking a challenging and rewarding career in IT consulting, with opportunities to work on diverse projects, develop new skills, and collaborate with a global team of professionals.
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Infographic showing various Mainframe Systems Administrator job openings at Computer Task Group in the United States as of June 2026, with employment types broken down into 34% Full Time, 65% Contract, and 1% Nights. Highlights an 87% Physical, 6% Hybrid, and 7% Remote job distribution.
iSeries Engineer

iSeries Engineer

Computer Task Group, Inc

Phoenix, AZ • On-site

Contractor

Posted 25 days ago

Job description

CTG is seeking an experienced iSeries Engineer (IBM i / AS400) for a role supporting enterprise Power Systems environments.
Location: Phoenix, AZ metro area (Hybrid working model)
Duration: 6 months with option to convert after 6 months
Citizenship: USC, PR, Other EAD holders (no visa dependent candidates)
Key Responsibilities:
  • Administer, support, and optimize IBM i (AS/400 / iSeries) and Power Systems environments
  • Perform system monitoring, performance tuning, and capacity management
  • Execute OS upgrades, patching, and PTF maintenance
  • Support DB2 for i, RPG, CL, BRMS, and IBM MQ environments
  • Manage system security, user profiles, and compliance controls
  • Troubleshoot infrastructure, OS, network, and application issues
  • Support backup, recovery, DR, and high availability solutions
  • Collaborate with infrastructure, development, and network teams
  • Develop automation scripts and maintain operational runbooks
  • Participate in on-call and production support rotations

Required Skills:
  • IBM i / AS400 / iSeries administration (5+ years)
  • IBM Power Systems infrastructure support
  • DB2 for i, RPG, CL
  • IBM MQ and BRMS
  • System performance tuning and troubleshooting
  • Security administration and system compliance
  • Backup, recovery, and disaster recovery planning
  • Strong scripting and automation capabilities
  • Experience supporting hybrid enterprise environments

Experience:
  • 5+ years of IBM i (iSeries / AS400) systems engineering or administration experience

Education:
  • Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent hands-on experience

Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.
CTG does not accept unsolicited resumes from headhunters, recruitment agencies, or fee based recruitment services for this role.
To Apply:
To be considered, please apply directly to this requisition using the link provided. Kindly forward this to any other interested parties. Thank you!
About CTG
CTG, a Cegeka company, delivers IT and business solutions that enhance clients' digital agility, empowering them to seize new opportunities and overcome any challenge. Backed by more than 60 years' experience and a commitment to being a reliable, results-driven partner, we work shoulder to shoulder with clients to shape digital together. Our vision is to be an indispensable partner to our clients and the preferred career destination for digital and technology experts. With more than 9,000 team members in over 15 countries, we combine global expertise with local insight to deliver innovative solutions. We operate across the Americas, Europe, and India, working with over 3,000 clients in many of today's highest-growth industries.
Together, we shape what's next-working shoulder to shoulder to deliver impactful solutions for our clients and society. Our culture is built by the people who work at CTG, the values we hold, and the actions we take. It's a living, breathing thing that is renewed every day through the ways we engage with each other, our clients, and our communities. At CTG, you'll find a workplace where you are encouraged to grow, supported in your ambitions, and empowered to shape your own career journey. For more information, visit www.ctg.com.
CTG will consider for employment all qualified applicants including those with criminal histories in a manner consistent with the requirements of all applicable local, state, and federal laws.
CTG is an Equal Opportunity Employer. CTG will assure equal opportunity and consideration to all applicants and employees in recruitment, selection, placement, training, benefits, compensation, promotion, transfer, and release of individuals without regard to race, creed, religion, color, national origin, sex, sexual orientation, gender identity and gender expression, age, disability, marital or veteran status, citizenship status, or any other discriminatory factors as required by law. CTG is fully committed to promoting employment opportunities for members of protected classes.
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About Computer Task Group

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We know that achieving our mission begins and ends with our people—and by people we mean you. Regardless of individual roles or responsibilities, regardless of industry or subject matter expertise, our lives happen in relation to other people—our colleagues, clients, and partners. CTG cultivates a workplace that attracts and develops the best people. Being Great Place to Work-CertifiedTM not only supports our Vision but also validates the rewarding workplace culture that has made CTG a leading IT and digital solutions and services company for more than 55 years.

Company size

1,001 - 5,000 Employees

Headquarters location

Buffalo, NY, US

Year founded

1966

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