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 ...
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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 ...
Quick apply
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 ...
$113K - $149K/yr
Description Senior Software Engineer (Python) The Company: Varonis (Nasdaq: VRNS) secures AI and the data that powers it. The Varonis platform gives organizations automated visibility and control ...
$113K - $149K/yr
Description Senior Software Engineer (Python) The Company: Varonis (Nasdaq: VRNS) secures AI and the data that powers it. The Varonis platform gives organizations automated visibility and control ...
$113K - $149K/yr
Description Senior Software Engineer (Python) The Company: Varonis (Nasdaq: VRNS) secures AI and the data that powers it. The Varonis platform gives organizations automated visibility and control ...
$113K - $149K/yr
Description Senior Software Engineer (Python) The Company: Varonis (Nasdaq: VRNS) secures AI and the data that powers it. The Varonis platform gives organizations automated visibility and control ...
$113K - $149K/yr
Description Senior Software Engineer (Python) The Company: Varonis (Nasdaq: VRNS) secures AI and the data that powers it. The Varonis platform gives organizations automated visibility and control ...
$113K - $149K/yr
Description Senior Software Engineer (Python) The Company: Varonis (Nasdaq: VRNS) secures AI and the data that powers it. The Varonis platform gives organizations automated visibility and control ...
Senior GIS Application Developer Location: West Virginia Department of Transportation (WVDOT) About ... Write and maintain automation scripts in Python, UNIX/LINUX shell scripting, or similar ...
Senior GIS Application Developer Location: West Virginia Department of Transportation (WVDOT) About ... Write and maintain automation scripts in Python, UNIX/LINUX shell scripting, or similar ...
Senior GIS Application Developer Location: West Virginia Department of Transportation (WVDOT) About ... for JavaScript, Python, .NET, and REST services Integrate GIS applications with enterprise ...
Senior GIS Application Developer Location: West Virginia Department of Transportation (WVDOT) About ... for JavaScript, Python, .NET, and REST services Integrate GIS applications with enterprise ...
Charleston, WV · Remote
$112K - $173K/yr
Zayo is seeking a talented Senior Software Engineer, Network Tools to join our growing team. In ... Collaborate with cross-functional teams (DevOps, Security) to ensure security and optimal ...
Charleston, WV · Remote
$112K - $173K/yr
Zayo is seeking a talented Senior Software Engineer, Network Tools to join our growing team. In ... Collaborate with cross-functional teams (DevOps, Security) to ensure security and optimal ...
WV · Remote
$169K - $229K/yr
Software Engineering Job Qualifications: Skills: Design, Problem Solving, Solutions Development ... The ideal candidate will be proficient in Python/Java or similar language, an expert in the ...
WV · Remote
$169K - $229K/yr
Software Engineering Job Qualifications: Skills: Design, Problem Solving, Solutions Development ... The ideal candidate will be proficient in Python/Java or similar language, an expert in the ...
WV · Remote
$142K - $189K/yr
Develops in languages such as Bash, PowerShell, Python * Maintains/enhances knowledge of AWS cloud ... The Lead Senior Principal Cloud Developer must have: Education: Technical Training, Certification(s ...
WV · Remote
$142K - $189K/yr
Develops in languages such as Bash, PowerShell, Python * Maintains/enhances knowledge of AWS cloud ... The Lead Senior Principal Cloud Developer must have: Education: Technical Training, Certification(s ...
WV · On-site +1
$215K/yr
Design and implement high-quality services in Python and Go that power our scanning workflows ... Strong experience as a Senior Software Engineer (or equivalent) working on backend or systems-level ...
WV · On-site +1
$215K/yr
Design and implement high-quality services in Python and Go that power our scanning workflows ... Strong experience as a Senior Software Engineer (or equivalent) working on backend or systems-level ...
$96K - $132K/yr
About the Role The Senior Analytics Engineer will play a critical leadership role in shaping and ... Advanced proficiency in SQL and Python, with strong data modeling and transformation skills.
$96K - $132K/yr
About the Role The Senior Analytics Engineer will play a critical leadership role in shaping and ... Advanced proficiency in SQL and Python, with strong data modeling and transformation skills.
$180K - $220K/yr
... Senior Software Engineer, you will lead major initiatives that advance Datavant's platform ... Python, Go, Java; microservices; REST and GraphQL * Frontend: TypeScript, React, Next.js
$180K - $220K/yr
... Senior Software Engineer, you will lead major initiatives that advance Datavant's platform ... Python, Go, Java; microservices; REST and GraphQL * Frontend: TypeScript, React, Next.js
Charleston, WV · On-site +1
$113K - $149K/yr
Senior AI Engineer, MarTech Role Overview: We are looking for a Senior AI Engineer to lead the ... Expert proficiency in Python . Deep experience with PyTorch or TensorFlow , and LLM orchestration ...
Charleston, WV · On-site +1
$113K - $149K/yr
Senior AI Engineer, MarTech Role Overview: We are looking for a Senior AI Engineer to lead the ... Expert proficiency in Python . Deep experience with PyTorch or TensorFlow , and LLM orchestration ...
$113K - $149K/yr
We are looking for a Senior Software Engineer to join our team. You will build, improve, and ... and/or Python. * Experience working with AWS services such as compute, storage, database, or ...
$113K - $149K/yr
We are looking for a Senior Software Engineer to join our team. You will build, improve, and ... and/or Python. * Experience working with AWS services such as compute, storage, database, or ...
Charleston, WV · On-site +1
$145K - $170K/yr
We are looking for a collaborative Senior Data Engineer . You have a strong inclination to work in ... Build data transformations and data flows utilizing Python, SQL, DBT, Postgres and Snowflake
Quick apply
Charleston, WV · On-site +1
$145K - $170K/yr
We are looking for a collaborative Senior Data Engineer . You have a strong inclination to work in ... Build data transformations and data flows utilizing Python, SQL, DBT, Postgres and Snowflake
Charleston, WV · Remote
$112K - $135K/yr
Are you a Front-End Developer? If so, then we want you on our team! We'relooking for a talented ... Leverageopen-sourceautomation tools and scripting languages in commercial tools (e.g., Python ...
Charleston, WV · Remote
$112K - $135K/yr
Are you a Front-End Developer? If so, then we want you on our team! We'relooking for a talented ... Leverageopen-sourceautomation tools and scripting languages in commercial tools (e.g., Python ...
Charleston, WV · Remote
$90 - $100/hr
Strong Python skills with TensorFlow and PyTorch. * Proven AWS expertise including Bedrock, Lambda ... AWS certification required such as Solutions Architect Associate, Developer Associate, Machine ...
Charleston, WV · Remote
$90 - $100/hr
Strong Python skills with TensorFlow and PyTorch. * Proven AWS expertise including Bedrock, Lambda ... AWS certification required such as Solutions Architect Associate, Developer Associate, Machine ...
... DevOps practices. * Cultivate engineering talent through coaching, career development, and ... Knowledge and experience with Java, Scala, Python, Kafka, and Container * AWS Cloud experience ...
... DevOps practices. * Cultivate engineering talent through coaching, career development, and ... Knowledge and experience with Java, Scala, Python, Kafka, and Container * AWS Cloud experience ...
Charleston, WV · Hybrid
... DevOps practices. * Cultivate engineering talent through coaching, career development, and ... Knowledge and experience with Java, Scala, Python, Kafka, and Container * AWS Cloud experience ...
Quick apply
Charleston, WV · Hybrid
... DevOps practices. * Cultivate engineering talent through coaching, career development, and ... Knowledge and experience with Java, Scala, Python, Kafka, and Container * AWS Cloud experience ...
Charleston, WV · Remote
$112K - $173K/yr
Zayo is seeking a highly skilled and experienced Senior Salesforce Developer to join our dynamic ... such as Python, Javascript, React, etc. * Experience working with various databases such as ...
Charleston, WV · Remote
$112K - $173K/yr
Zayo is seeking a highly skilled and experienced Senior Salesforce Developer to join our dynamic ... such as Python, Javascript, React, etc. * Experience working with various databases such as ...
$42.6K - $52.4K
0% of jobs
$52.4K - $62.3K
0% of jobs
$62.3K - $72.1K
2% of jobs
$72.1K - $82K
4% of jobs
$82K - $91.8K
12% of jobs
$94.6K is the 25th percentile. Wages below this are outliers.
$91.8K - $101.7K
24% of jobs
The median wage is $107.4K / yr.
$101.7K - $111.6K
13% of jobs
$111.6K - $121.4K
15% of jobs
$125.1K is the 75th percentile. Wages above this are outliers.
$121.4K - $131.3K
13% of jobs
$131.3K - $141.1K
11% of jobs
$141.1K - $151K
6% of jobs
$42.6K
$109.9K
$151K
| Aspect | Senior Python Developer | Python Developer |
|---|---|---|
| Required Experience | Typically 5+ years, with leadership and complex project experience | Usually 1-3 years, focusing on core Python skills |
| Responsibilities | Designing architecture, mentoring, handling complex systems | Writing code, debugging, implementing features |
| Certifications | Optional but beneficial (e.g., Python certifications, cloud certs) | Often not required |
| Work Environment | Collaborative teams, project planning, code reviews | Development-focused, task-oriented |
The main difference between a Senior Python Developer and a Python Developer lies in experience, responsibilities, and leadership. Senior developers handle complex projects, mentor others, and often participate in architecture decisions, while Python Developers focus on coding and feature implementation. Both roles are essential in tech companies, but the senior role requires more experience and broader skills.

Contractor
Posted 6 days ago
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.
PythonDB2 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.
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
IBM Certified Database Admin DB2 for z/OS; IBM z/OS Associate/Professional; Control-M/CA-7 certifications