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Python Engineer with Mainframe, Atlanta GA

Atlanta, GA, US • Posted 9 hours ago • Updated 9 hours ago

Contract Corp To Corp

On-site

$70/hr

Calabitek

Fitment

Dice Job Match Score™

🛠️ Calibrating flux capacitors...

Job Details

Skills

JIRA
Data governance
Git
Big Data
Data Pipelines
Change Management
servicenow
automation
Scripting
Database Administration
GitLab
Apache Kafka
Apache Spark
Communication Skills
Ansible
Continuous Integration
Python (Programming Language)
Bash Shell
Data Processing
Extract Transform Load (ETL)
Application Programming Interfaces (APIs)
Code Coverage
SQL Databases
Mainframes
Z/OS
Architecture
Build Management
Code Review
Customer Information Control System (CICS)
IBM DB2
Job Control Language (JCL)
Data Logging
Systems Development Life Cycle
Databases
Data Streaming
Buffers
Control M
COBOL (Programming Language)
Pl/i
Code Restructuring
Trunk-based Development
American Standard Code for Information Interchange (ASCII)
Avro
Concurrency
Dask
Database Optimisation
Database Replication
IBM WebSphere MQ
Microsoft Access
Network Performance
Pandas
Parquet
Perf (Linux)
Performance Engineering
Production Systems
Sql Tuning
Tso/ispf
Airflow
Distributed Data Store

Summary

Senior Python Engineer - Mainframe (DB2/JCL),
Atlanta, GA
Onsite

Senior Python Engineer - Mainframe (DB2/JCL) Design & build Python on z/OS (USS): Develop CLI tools, services, and batch utilities that run natively on z/OS Unix System Services (USS) or orchestrate mainframe jobs from distributed hosts. Batch orchestration: Create and maintain JCL (PROCs, symbolics, condition codes, GDGs) and integrate with enterprise schedulers (e.g., Control-M, CA-7). Implement robust restart/recovery and step-level error handling. DB2 for z/OS engineering: Write and tune SQL; implement stored procedures; design schemas and indexes; use EXPLAIN, RUNSTATS, and utilities (LOAD/UNLOAD/REORG) to hit SLAs. Python DB2 integration: Connect via ibm_db/CLI/ODBC and optimize connection pooling, cursor usage, and transaction boundaries for high-throughput workloads. Data processing pipelines (plus): Build high-volume ETL/ELT flows with Python (e.g., pandas, PyArrow, Dask) and efficient I/O (binary formats, streaming, chunking). Job submission & automation: Submit and monitor jobs via SDSF, z/OSMF REST APIs, or Zowe CLI; parse JES output; automate handoffs and notifications. Reliability & observability: Implement structured logging, metrics, and tracing; integrate with enterprise monitoring (e.g., Splunk, ELK). Testing & CI/CD: Enforce unit/integration tests (pytest), code reviews, linting/type hints (flake8/ruff/mypy), packaging, and CI/CD (e.g., Jenkins, GitLab). Security & compliance: Follow RACF/Top Secret/ACF2 controls, least privilege, and data governance for PII/PCI/SOX environments. Mentorship & documentation: Coach engineers on Python + mainframe best practices; produce clear runbooks and architecture docs. Required qualifications 8+ years professional Python (3.x) building reliable, performant production systems (CLIs, services, or batch). Hands-on Python on the mainframe (must-have): Comfortable with z/OS USS, TSO/ISPF, SDSF, OMVS, dataset concepts (PS/PO, GDGs), code pages/EBCDIC vs ASCII, and file I/O nuances. Mainframe DB2 expertise: Strong DB2 for z/OS (SQL tuning, indexing strategies, access paths, utilities, locking & concurrency). Familiar with SPUFI, DSNTEP2, IBM Data Studio (or equivalents). Deep JCL proficiency: PROCs, symbolic parms, condition codes, dataset allocation, DFSORT/ICETOOL, IDCAMS, and common utilities; experience wiring JCL into enterprise schedulers. Scripting & OS: Shell (sh/bash) on USS; comfort with dataset/file conversions, large file throughput, and job logs. SDLC discipline: Git, trunk-based development, code reviews, tickets/change management (e.g., Jira/ServiceNow). Excellent communicator with the ability to translate between mainframe, data, and app teams. Nice-to-have (strong plus) Data-processing Python: pandas, PyArrow, Dask; memory/perf tuning for large datasets; binary formats (Parquet/Avro). Automation toolchain: Zowe CLI, z/OSMF REST, IBM Z Open Automation Utilities, Ansible for z/OS. Integration: IBM MQ, CICS, Kafka/CDC (e.g., IBM Data Replication), REST/gRPC services bridging z/OS and distributed. Performance engineering: SMF insights, buffer pool tuning (with DBAs), batch window optimization. Refactoring legacy: Translating COBOL/PL/I batch logic to Python where appropriate; creating safe migration paths. Distributed data engines: PySpark/Spark (for off-platform processing), Airflow. Observability & SRE: SLA/SLO design, incident response for nightly/weekly batch cycles. Tools & environment (illustrative) Mainframe: IBM z/OS 2.x, USS, TSO/ISPF, SDSF, RACF/Top Secret/ACF2 Data: DB2 12/13 for z/OS; utilities (REORG/RUNSTATS/LOAD/UNLOAD) Python: 3.x, venv/poetry, ibm_db/ODBC, requests, pandas/PyArrow (as applicable) Automation: Zowe CLI, z/OSMF APIs, Control-M/CA-7, Jenkins/GitLab CI Monitoring: Splunk/ELK, enterprise log aggregation Success metrics Batch SLAs consistently met; reduced average job elapsed time and rerun rates Measurable DB2 query/perf improvements (e.g., CPU, getpages, elapsed time) Increased automation coverage (job submission/monitoring, recovery) High test coverage and low change-failure rate across releases Education & certification BS/MS in CS, EE, or equivalent experience Nice-to-have: IBM Certified Database Admin - DB2 for z/OS; IBM z/OS Associate/Professional; Control-M/CA-7 certifications

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Dice Id: 91128566
Position Id: 2026-1878
Posted 9 hours ago

Company Info

About Calabitek

Calabitek offers specialized services to fill in the gaps of your growing needs to assist you in providing immense value to your customers and clientele. If there is a digital solution to your business needs, Calabitek has the answer. We firmly believe that human capital is the most valuable asset and therefore, we focus on developing people to meet your digital needs. From staffing to solutioning via digital products and services in mobile, web, and cloud-based technologies, we have a versatile team dedicated to getting you what matters most – remarkable results.

We begin by gaining a firm grasp on your companyʼs mission and culture so that our solutions seamlessly integrate into the ecosystem of your business. Whether you have a developed concept and simply need more manpower to finish the project, have a mobile app idea but lack the technical expertise to bring it to life, or perhaps have the great problem of exponential growth and need a third party to help digitally scale your business, we will take your business to the next level.

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Job Title Senior z/OS Systems Programmer / Mainframe Systems Programmer Location Atlanta, GA - Day 1 Onsite Role Summary Responsible for supporting and maintaining the z/OS 3.1 mainframe environment across multiple LPARs, with strong focus on system software availability, reliability, upgrades, performance, and security. This role requires hands-on ownership of the operating system, associated IBM and third-party software, and coordination with application and infrastructure teams to keep prod

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