What are the responsibilities and job description for the Senior Mainframe Developer (Assembler) position at 21CS?
About our Business:
21CS is an international software development company, with major offices in Boston (MA), Morehead City (NC), Morristown (NJ), Stuttgart (Germany) and Perth (Australia).
We develop and maintain mainframe-based software products, partnering with leaders in the IBM Z industry, to service our global customer network. We provide innovative, modern solutions aimed at growing and revitalizing the IBM Z platform.
We have a talented team and provide a flexible and fun working environment. We encourage continued development of our team members, and as we are a growing company, our employees have many different career pathways available to them.
About the role:
21CS is looking for a skilled z/OS software developer to maintain, design, test and code using High Level Assembler. This role is responsible for architecture, design and code functionality for enterprise-level products that meet business and customer requirements. You will perform complex code modification, analysis, testing, and debugging tasks as well as provide input related to product futures. Candidates must have a background in z/OS systems software development or other z/OS development experience with a strong desire to learn z/OS operating system internals and related technology.
Strong technical skills and a passion for learning are necessary to accomplish company and personal goals.
This is a full-time position.
Key Responsibilities:
Benefits and Perks:
Great modern office just minutes away from the beautiful beaches of the Crystal Coast and the Outer banks, easily accessible and close to a plethora of shopping and dining options. We offer a friendly, fun work environment and mentorship by experienced and highly skilled team members. Excellent health insurance (medical, dental vision), 401k match and unlimited PTO. We also support flexible working practices.
21CS is an international software development company, with major offices in Boston (MA), Morehead City (NC), Morristown (NJ), Stuttgart (Germany) and Perth (Australia).
We develop and maintain mainframe-based software products, partnering with leaders in the IBM Z industry, to service our global customer network. We provide innovative, modern solutions aimed at growing and revitalizing the IBM Z platform.
We have a talented team and provide a flexible and fun working environment. We encourage continued development of our team members, and as we are a growing company, our employees have many different career pathways available to them.
About the role:
21CS is looking for a skilled z/OS software developer to maintain, design, test and code using High Level Assembler. This role is responsible for architecture, design and code functionality for enterprise-level products that meet business and customer requirements. You will perform complex code modification, analysis, testing, and debugging tasks as well as provide input related to product futures. Candidates must have a background in z/OS systems software development or other z/OS development experience with a strong desire to learn z/OS operating system internals and related technology.
Strong technical skills and a passion for learning are necessary to accomplish company and personal goals.
This is a full-time position.
Key Responsibilities:
- Build strong relationships with client stakeholders, understanding their goals and how 21CS solutions can support them.
- Act as a connector between customers and internal teams (support, product, engineering) to resolve issues and enable success.
- Develop a foundational understanding of our platform and services to guide clients in using them effectively.
- Proactively monitor account health, usage, and engagement, identifying opportunities for growth or improvement.
- Contribute to customer onboarding, training sessions, and strategic reviews.
- Translate customer needs into clear internal feedback to help shape product development.
- Minimum 5 years of experience with HL assembler programming
- Minimum 5 years of experience with z/OS software development
- General z/OS skills: TSO, ISPF, JCL
- ISMF and ACS routines
- GTF trace
- SCLM/GIT
- Software development
- Software architect experience
- Strong debugging skills
- Strong analytical and troubleshooting skills.
- Strong teamwork skill and high personal integrity
- Strong interpersonal and communication skills
- Strong customer service focus
- Commitment to learning new technologies as needed.
- Ability to work independently and in a team environment.
- Bachelor’s Degree or equivalent experience
- Preferably some experience with IBM z/OS XL C/C and REXX
Benefits and Perks:
Great modern office just minutes away from the beautiful beaches of the Crystal Coast and the Outer banks, easily accessible and close to a plethora of shopping and dining options. We offer a friendly, fun work environment and mentorship by experienced and highly skilled team members. Excellent health insurance (medical, dental vision), 401k match and unlimited PTO. We also support flexible working practices.
