Sr. Systems Engineer

Indianapolis, IN, us on site Until 9/29/2026 10+ years exp First posted July 31, 2026 Last posted July 31, 2026
Job description

Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private defense and government solutions business specializing in advanced technology systems and mission support. Its capabilities include data science, software development, network engineering, intelligence, surveillance, and reconnaissance (ISR), and logistics.

SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission-critical enterprise application supporting federal business operations.

Job Description

The Senior Systems Engineer will provide technical leadership supporting production operations, infrastructure integration, database technologies, release management, and enterprise system performance within a large IBM mainframe environment.

Responsibilities

  • Support IBM z/OS production environments.
  • Maintain and support IDMS database environments.
  • Support production deployments and release activities.
  • Troubleshoot system performance issues and production incidents.
  • Support configuration management and technical documentation.
  • Coordinate system changes across technical teams.
  • Bachelor's degree in Engineering, Computer Science, Information Systems, or related field. Equivalent experience may be substituted.
  • 10+ years supporting enterprise systems.
  • Experience supporting mission-critical production operations.
  • Strong IBM mainframe experience.
  • IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production Operations, System Integration.
  • Ability to obtain Public Trust clearance.

Preferred:

  • Large-scale financial or ERP systems.
  • Federal enterprise environments.

Work Environment

  • Normal office conditions with potential to perform duties in deployed locations
  • Remote or Hybrid work model 
  • Core hours of operation are Monday through Friday, 0600 – 1700.
  • May be requested to work evenings and weekends to meet program and contract needs

Working at SOSi

All interested individuals will receive consideration and will not be discriminated against for any reason.

Compensation (from employer):
88035 – 182842 USD (YEARLY)

About this role

Summary

Support enterprise applications in IBM mainframe environment, leading operations, deployments, and troubleshooting.

Job title

Sr. Systems Engineer

Experience level

10+ years

Minimum experience

10+ years exp

Industry

defense and government solutions

Location requirements

Remote or hybrid work from Indianapolis, IN, US

Salary

$88k–$183k

Management role

No

Skills & keywords

Required skills

IBM z/OSIDMSOracleCognosEndevorproduction operationssystem integration

Preferred skills

financial systemsfederal enterprise environments

Specializations

mainframedatabaseenterprise systemsIBM z/OSIDMS
Locations

Structured locations inferred from the posting.

Indianapolis, IN, USA

Hybrid City