Tandem Developer

Compunnel Inc.; Wilmington (DE); On-site; USD 70,000 - 110,000; Full time

Job summary

A technology consulting firm based in Wilmington, Delaware, is seeking a mid-senior level professional with strong expertise in BASE24, COBOL, and JCL for a contract position. The role involves deploying and supporting payment switches and requires a deep understanding of transaction testing tools. Ideal candidates will have extensive experience in mainframe technologies and payment architecture.

Qualifications

• 7-15 years strong experience in deploying, configuring, customizing, and supporting switches like BASE24 or Connex.
• Strong experience in BASE24 Connex development and implementation.
• Proficiency in C, TAL, COBOL, SCOBOL, and Unix/Linux shell scripting.
• Hands-on experience with payment simulators and transaction testing tools.
• Deep understanding of ISO8583, SOAP/XML, and payment switch architecture.
• Familiarity with key management, HSM messages, and EMV transaction flows.

Skills

JCL

Mainframe Enterprise Cobol

VSAM

Mainframe DB2

Mainframe Admin

Z/OS

COBOL/JCL/DB2

Mainframe COBOL

Tools

Git

Job description

Overview

Direct message the job poster from Compunnel Inc.

Type – Contract

Interview Mode – Video

Responsibilities

• 7-15 years strong experience in deploying configuring customizing and supporting switches like BASE24 or Connex
• Strong experience in BASE24 Connex development and implementation
• Proficiency in C TAL COBOL SCOBOL and Unix Linux shell scripting
• Hands-on experience with payment simulators and transaction testing tools e.g., Postman Asset
• Deep understanding of ISO8583 SOAPXML and payment switch architecture
• Familiarity with key management HSM messages and EMV transaction flows
• Experience with version control tools like Git

Qualifications

• Mandatory Skills : JCL, Mainframe Enterprise Cobol, VSAM, Mainframe DB2, Mainframe Admin, Z/OS, Mainframe - COBOL/JCL/DB2, Mainframe COBOL
• Good to Have Skills : JCL, Z/OS, VSAM, Mainframe DB2

Seniority level

• Mid-Senior level

Employment type

• Contract

Job function

• Consulting

Industries

• IT Services and IT Consulting

Philadelphia, PA

Salary ranges shown in the posting vary by location and date of posting.