Job Description

Financial Services Lead Mainframe Expert

Location: Katowice- 2 days office/3 days remote

Let us introduce you the job offer by EY GDS Poland – a member of the global integrated service delivery center network by EY.

We are currently enforcing the team in Financial Services (FS) area with the portfolio widespread around the globe, dedicated to the Wealth and Asset Management (WAM) sector. Our clients are the top players of the market. Our FS teams have been at the forefront of the most significant industry events that are reshaping and redefining the clients’ products. You will play a key role in defining the way our Wealth and Asset Management clients transform their business models to address their most complex reporting and technology challenges.

The opportunity

We are looking for an experienced Mainframe DevOps Specialist to join our Financial Services technology team. In this role, you will design, develop, maintain and optimize mainframe-based applications, while supporting critical banking and tax‑related systems. You will contribute to continuous service improvement and operational excellence across legacy and modernized mainframe environments.

The ideal candidate will bring a strong hands‑on engineering mindset and the ability to work across the entire SDLC, from requirement analysis to deployment and support.

Your key responsibilities

• Design, develop, maintain and optimize mainframe applications (PL/1, COBOL, JCL, DB2).
• Conduct requirement engineering, solution design and preparation of use cases.
• Prepare and execute unit, system and end‑to‑end test scenarios.
• Handle batch issues, technical incidents, user queries and general troubleshooting.
• Perform data extraction, SQL performance tuning and mass data updates.
• Collaborate with distributed teams in global banking environments.
• Participate in migration, optimization and modernization initiatives.
• Share best practices and support knowledge transfer within the team.
• Maintain high standards of documentation and engineering discipline.
• Participate in organization-wide quality, process improvement, or automation initiatives.

Skills and attributes for success

• Strong analytical thinking, attention to detail and excellent time management.
• Ability to quickly learn new technologies and concepts.
• Ability to work independently while maintaining close collaboration with colleagues and stakeholders.
• Strong communication skills in English (C1 level), another European language is a plus.

To qualify for the role, you must have

• Bachelor’s degree in Computer Science, IT, or a related field.
• 7+ years of experience in mainframe development or operations.

Strong hands-on experience with:

• PL/1, COBOL, JCL, DB2 SQL
• Batch management (TWS/IWS, Tivoli, Control-M)
• Mainframe DevOps and testing (unit, system, E2E)

• Experience supporting critical banking or tax infrastructure systems.
• Experience with incident handling, performance troubleshooting and system optimization.

Ideally, you’ll also have

• Knowledge of additional technologies, e.g. REXX, IMS, MQ, CICS, ChangeMan, RDz/IDz, SpringBoot, Angular, Java.
• Understanding of RACF, security audits and access/resource management.
• Certifications such as ITIL v3, IBM z/OS fundamentals, or Mainframe Academy achievements.
• Experience with service transition, team leadership, or training.

What we look for

We are seeking someone with a self‑driven mindset who can excel in a dynamic environment and take ownership of complex mainframe applications. The ideal candidate is thorough, quality-oriented and comfortable working across the entire software lifecycle..

What we offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across nine locations – Argentina, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom – and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. We’ll introduce you to an ever-expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

• Continuous learning:You’ll develop the mindset and skills to navigate whatever comes next.
• Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
• Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.
• Diverse and inclusive culture: You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

About EY

EY | Building a better working world

EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.

Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.

Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

If you can demonstrate that you meet the criteria above, please contact us as soon as possible.

The exceptional EY experience. It’s yours to build

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