Senior Mainframe Engineer (COBOL / CICS / DB2) - Onsite in Halifax

NTT DATA, Inc.; Halifax; On-site; CAD 118,000 - 205,000; Full time

Job summary

NTT DATA Services in Halifax, Nova Scotia, is seeking a Senior Mainframe Engineer (COBOL/CICS/DB2) to provide technical leadership, design, and support for mission-critical mainframe applications. This role focuses on modernizing platform capabilities, mentoring teams, and ensuring reliability and performance of enterprise systems.

The candidate will drive initiatives, promote best practices, and collaborate with cross-functional teams to deliver high-quality solutions in a dynamic environment.

Qualifications

• 8+ years hands-on COBOL, DB2, VSAM, and JCL experience.
• Strong background in high-volume, transaction-intensive mainframe apps.
• Solid knowledge of CICS and Dynamic Transaction Routing.
• Experience with DB2 utilities, File-AID, schedulers, and debugging tools.

Responsibilities

• Provide technical leadership for strategic mainframe initiatives and platform enhancements.
• Design, develop, and maintain scalable, high-performance solutions for mission-critical apps.
• Define and promote engineering standards, best practices, and code quality.
• Mentor engineers through technical guidance, code reviews, and knowledge sharing.
• Evaluate and improve platform architecture to meet evolving business needs.
• Collaborate with Operations to plan infrastructure upgrades and troubleshoot production issues.
• Partner with cross-functional teams to improve processes and deliver reliable systems.
• Participate in design reviews, code reviews, and production support activities.

Skills

COBOL

DB2

VSAM

JCL

CICS

Dynamic Transaction Routing

Tools

DB2 Utilities

File-AID

Schedulers

Debugging tools

Job description

Date: Aug 5, 2026

Company: NTT DATA Services

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,

We are currently seeking a Senior Mainframe Engineer (COBOL / CICS / DB2) - Onsite in Halifax to join our team in Halifax, Nova Scotia (CA-NS), Canada (CA).

We are seeking a Senior Mainframe Engineer to provide technical leadership in designing, enhancing, and supporting high-volume, mission‑critical mainframe applications. In this role, you will drive key initiatives, modernize platform capabilities, mentor engineering teams, and ensure the reliability, scalability, and performance of enterprise systems supporting large‑scale transaction processing.

This is an excellent opportunity for an experienced engineer who enjoys solving complex technical challenges while influencing architecture, best practices, and engineering standards.

Key Responsibilities

• Provide technical leadership for strategic mainframe initiatives and platform enhancements.
• Design, develop, and maintain scalable, high‑performance solutions for mission‑critical applications.
• Define and promote engineering standards, best practices, and code quality.
• Mentor and support engineers through technical guidance, code reviews, and knowledge sharing.
• Evaluate existing platform architecture and recommend improvements to meet evolving business needs.
• Partner with Operations to plan infrastructure upgrades, optimize system performance, and troubleshoot production issues.
• Collaborate with cross‑functional teams to improve processes, enhance system reliability, and deliver an exceptional customer experience.
• Participate in design reviews, code reviews, unit testing, and production support activities.

Required Qualifications

• 8+ years of hands‑on experience with COBOL, DB2, VSAM, and JCL.
• Strong experience developing and supporting high‑volume, transaction‑intensive mainframe applications.
• Solid knowledge of CICS, including Dynamic Transaction Routing.
• Experience with DB2 utilities, File‑AID, schedulers, and debugging tools.
• Understanding of distributed applications and system integration.
• Experience working with highly available, fault‑tolerant, data‑driven enterprise systems.

Preferred Qualifications

• 5+ years of CICS systems experience.
• Experience in the Brokerage, Financial Services, or Capital Markets industry.
• Exposure to large‑scale enterprise modernization or platform transformation initiatives.

What We're Looking For

• Strong analytical and problem‑solving skills with the ability to identify risks and deliver effective solutions.
• Proven ability to lead technical initiatives and influence teams without direct authority.
• Excellent communication and stakeholder management skills across technical and business teams.
• Strong project planning, prioritization, and execution abilities.
• A collaborative mindset with a passion for mentoring and developing other engineers.
• Adaptability in fast‑paced, evolving environments with a focus on continuous improvement and delivering high‑quality solutions.

Pay Transparency

Where required by law, NTT DATA provides a reasonable range of compensation for specific roles. The starting pay range for this remote role is $ $84,360 - $146,540. This range reflects the minimum and maximum target compensation for the position across all US locations. Actual compensation will depend on a number of factors, including the candidate’s actual work location, relevant experience, technical skills, and other qualifications.

This position is eligible for company benefits including medical, dental, and vision insurance with an employer contribution, flexible spending or health savings account, life and AD&D insurance, short- and long‑term disability coverage, paid time off, employee assistance, participation in a 401k program with company match, and additional voluntary or legally‑required benefits.

About NTT DATA

NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise‑scale AI, cloud, security, connectivity, data centers and application services. Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start‑up partners. NTT DATA is part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in‑office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us .

NTT DATA endeavors to make https://us.nttdata.com accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https://us.nttdata.com/en/contact-us . This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.