Mainframe Application Developer (Senior)

Richmond Hill, Canada

Are you enthusiastic about contributing to a successful and innovative company on the forefront of technology? Join us at Connex and be part of a dynamic team of 600 professionals across 14 offices in North America. Our commitment is to provide cutting-edge solutions, and our employees play a crucial role as ambassadors to clients and partners. Integrity, accountability, and skill are the cornerstones of our success.   

We are seeking a skilled Mainframe Developer to join our dynamic team. The successful candidate will have significant experience with mainframe systems and be proficient in COBOL, DB2, SAS, SQL, and JCL. This role involves developing, maintaining, and optimizing mainframe applications to support our critical business operations. The ideal candidate will also possess strong problem-solving skills and the ability to work in a fast-paced environment.

Customer Relationship
Personal Evolution
Autonomy
Administrative Work
Technical Expertise

Responsibilities

  • Proven track record of managing mainframe databases and developing mainframe applications.
  • Ability to understand and implement business requirements into technical solutions.
  • Significant experience on mainframe systems utilizing COBOL, DB2, SAS, SQL and JCL is critical
  • Developing, maintaining, and optimizing mainframe applications to support our critical business operations
  • Ability to work collaboratively with cross-functional teams and communicate effectively with both technical and non-technical stakeholders.
  • Design, develop, and maintain robust, scalable, and high-performing enterprise-level web applications. 
  • Collaborate with cross-functional teams to gather and analyze business requirements, and translate them into technical specifications. 
  • Write clean, efficient, and well-documented code using programming languages such as Java, Node.js. 
  • Conduct thorough testing and debugging to identify and resolve issues or bugs.
  • Optimize software applications for maximum speed and performance.
  • Continuously monitor and enhance existing software applications, identifying opportunities for improvement and implementing necessary updates.
  • Collaborate with database administrators to design and optimize database structures and queries.
  • Provide technical guidance and mentorship to junior developers, fostering a collaborative and learning-oriented environment.

Desired Skills

  • Bachelor's degree in Computer Science, Information Technology, or a related field
  • Proven experience as a Mainframe Developer with strong proficiency in COBOL, CICS, DB2, and JCL.
  • 12+ years of professional experience.
  • Ability to work collaboratively with cross-functional teams and stakeholders. 
  • Excellent problem-solving and analytical skills, with the ability to troubleshoot and resolve complex technical issues.
  • Strong attention to detail and ability to prioritize tasks effectively. 
  • Platform Experience: Cloud, VMC 2.0, UNIX
  • Platform Experience: MVS
  • Experience with developer tools such as Endevor, TSO, CA7 Scheduling, and Service Now.
  • Knowledge of file transfer protocols and tools like EBX and TIBCO mailboxes. 
  •  Netron CAP, JAVA, Angular, Powerbuilder. 
  • Strong problem-solving skills and ability to analyze and resolve complex technical issues. 
  • Certifications in relevant mainframe technologies are a plus.

Why Join Connex Telecommunications? 

Innovative Excellence at Its Core

​Join a dynamic, results-driven team renowned for tackling complex challenges and delivering impactful solutions that drive consistent growth year after year.

Unparalleled Opportunities for Growth

Advance your technical expertise and career with access to leading-edge tools, certification programs, dedicated mentorship, and clear paths for internal advancement.

Shape the Future on Transformative Projects

Collaborate with world-class clients on industry-defining projects, leveraging the latest technologies to deliver tangible, meaningful results.

A Culture of Innovation

Thrive in a forward-thinking, tech-focused environment that values creativity, fosters knowledge sharing, and attending engaging events. 

A Purpose-Driven Workplace

Be part of initiatives that prioritize community development, sustainability, and social equity—making your work meaningful beyond the office.

A Truly Inclusive Team

Experience a multicultural workplace built on openness, collaboration, and celebration, with regular team-building activities and recognition for your achievements.

CONNEX Telecommunications Inc. is committed to diversity and encourages applications from all qualified candidates, especially aboriginal persons, members of sexual minority groups, persons with disabilities, visible minorities, and women. Upon request by the applicant, accommodation will be provided in all parts of the hiring process. We thank all applicants for their interest in this position, however, only those selected for an interview will be contacted.