Mainframe: The Complete COBOL Course from Beginner to Expert Intermediate
Mainframe: The Complete COBOL Course from Beginner to Expert by Koenig Original equips aspiring mainframe developers, legacy system maintainers, and IT professionals with comprehensive COBOL programming skills essential for maintaining critical applications in banking, insurance, and government sectors—where over 70% of transaction systems still rely on COBOL. This course bridges the skill gap by delivering hands-on coding experience in COBOL, JCL, TSO/ISPF, and COBOL-DB2 integration, enabling learners to confidently develop, debug, and deploy enterprise-grade mainframe applications.
Preparation for the Koenig-certified COBOL credential is built into the curriculum, supported by 32 hours of live, Guaranteed-to-Run training and 30-day lab access. Graduates gain practical mastery to pass certification and advance into roles like Mainframe Programmer or Systems Analyst with stronger employability in modernized legacy environments.
Training Formats & Pricing
100% Happiness Guarantee · Free Rescheduling · Secure Payment
Course Overview
The Mainframe: The Complete COBOL Course from Beginner to Expert by Koenig Original is a comprehensive training program designed for aspiring mainframe developers, software engineers transitioning into legacy systems, and IT professionals seeking expertise in COBOL programming. This course prepares learners for the Koenig-certified assessment in COBOL, focusing on mastering the language used in core financial, insurance, and government systems. With over 800 billion lines of COBOL code still active globally and 95% of ATM transactions relying on COBOL systems, demand remains strong despite a shrinking talent pool. Roles such as COBOL Developer, Mainframe Application Programmer, and Legacy Systems Analyst benefit directly from this training, equipping professionals to maintain and modernize critical infrastructure in sectors where system stability is paramount.
Students engage with essential mainframe technologies including TSO/ISPF, JCL (Job Control Language), COBOL-DB2 integration, MVS 3.8, and z/OS environments through hands-on labs. The lab component allows learners to build, compile, and execute real COBOL programs using actual mainframe connectivity via IP-based access, simulating enterprise workflows. Participants configure datasets (PS and PDS), manage SPOOL outputs, and debug programs within an interactive mainframe environment. A key project involves developing a full COBOL application that processes transactional data using file handling, conditional logic, and database calls, providing practical experience aligned with production-level coding standards and troubleshooting scenarios encountered in banking and insurance back-end systems.
This course prepares candidates for recognition as certified COBOL practitioners, a credential valued across industries managing mission-critical workloads. Certified professionals report median salaries between $85,000 and $115,000 annually in the US, with senior roles exceeding $150,000 due to high demand and low supply. Koenig Original differentiates this offering with flexible learning formats, official e-courseware, and access to live hands-on labs—features proven to enhance retention and job readiness. Graduates gain not only technical mastery but also interview readiness for COBOL-centric roles, positioning them for advancement into lead developer or systems architect positions within organizations committed to maintaining resilient mainframe operations.
What You'll Learn
Prerequisites
- Students should be prepared to navigate TSO/ISPF to execute COBOL source code, which is essential for mastering Mainframe: The Complete COBOL Course from Beginner to Expert by Koenig Original.
- Recommended Technical Background: Familiarity with JCL (Job Control Language) syntax and job submission helps students streamline batch processing tasks within the course.
- Understanding mainframe operating environment concepts provides a solid foundation for working with COBOL and enhances overall system comprehension during the course.
- Recommended Technical Background: Knowledge of DDL and DML operations in DB2 is beneficial for integrating COBOL applications with database management systems.
- Students must install and configure a TN3270 or IBM Personal Communications emulator to access the mainframe system for hands-on practice and real-world application of COBOL programming techniques.
- A fundamental grasp of file processing and data management on mainframes ensures learners can efficiently develop and troubleshoot COBOL programs in enterprise settings.
Certification Exam
Everything you need to know about the Mainframe: The Complete COBOL Course from Beginner to Expert certification exam
What's Included in Your Training
Every enrollment comes packed with resources to maximise your learning and exam success
Exam Preparation Materials
Practice Test Questions (200+)
Certificate of Completion
Post-Training Support (30 days)
Session Recording Access
Free Rescheduling (7+ days notice)
Career Outcomes
of Mainframe: The Complete COBOL Course from Beginner to Expert certified professionals report career advancement within 6 months
Salary Impact
Average salary increase reported after obtaining the Mainframe: The Complete COBOL Course from Beginner to Expert certification
*Source: Glassdoor / LinkedIn 2025
Job Roles
- COBOL Developer
- Mainframe Application Developer
- Senior COBOL Programmer
- Mainframe Systems Analyst
- Legacy Systems Modernization Specialist
- Mainframe Technical Lead
Companies Hiring
and 5,000+ organizations worldwide seeking Mainframe: The Complete COBOL Course from Beginner to Expert certified professionals
Course Student Reviews
Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.
-
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
-
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified
-
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified
-
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
Happiness Guarantee
We are so confident in the quality of our training that we offer a full money-back guarantee. Not satisfied? Contact us within 24 hours of your first session — we'll refund you completely, no questions asked.