Sr. Software Developer, System Software

Oasys International, LLC; Fairfax (VA); Remote; USD 100,000 - 125,000; Full time

Job summary

A dynamic consulting firm is seeking a Senior Software Developer to support the US Coast Guard’s aviation logistics systems. This position involves advanced support for system software across various environments, troubleshooting, and compliance with security standards. Ideal candidates will have a degree in Computer Science or a related field, with significant experience in system-level development and Agile methodologies. The role is remote and offers opportunities for growth and learning.

Benefits

Continuous learning opportunities

Healthy work-life balance

Collaborative work environment

Qualifications

• Experience supporting system software in RHEL, Windows, VMware.
• Five years in security remediation for vulnerable systems.
• Experience in Agile DevSecOps environments.

Responsibilities

• Lead support for system-level software across multiple environments.
• Monitor performance and develop mitigation strategies.
• Resolve production software defects and implement fixes.

Skills

System-level software development expertise

Troubleshooting in production environments

Scripting in Bash, PowerShell, or Python

Knowledge of Kubernetes and CI/CD pipelines

Documentation and communication skills

Education

Bachelor's or Associate's degree in relevant field

Tools

VMware

RHEL

Jira

Confluence

Bitbucket

Job description

Overview

Who We Are: Oasys International, LLC (Oasys) is a rapidly expanding firm that has been recognized on Inc. 5000 magazine's list of the fastest-growing companies for five consecutive years. We are a dynamic organization dedicated to providing world-class technology consulting services through our team of expert technologists, consultants, engineers, and subject matter experts. At Oasys, we prioritize continuous learning, a healthy work-life balance, and a collaborative work environment. Our culture is merit-based, recognizing and rewarding performance and fostering a supportive and social atmosphere.

Position Summary

Oasys is seeking a Sr. Software Developer, System Software to support the United States Coast Guard (USCG) at the Aviation Logistics Center (ALC)-Information Systems Division (ISD). The Sr. Software Developer, System Software will provide advanced support for the operation, sustainment, performance, and security of system software across USCG\'s aviation logistics enterprise.

Responsibilities

• Lead support and sustainment activities for system-level software across Windows, Red Hat Enterprise Linux (RHEL), VMware, and Kubernetes environments.
• Monitor application and infrastructure performance, identify degradation trends, and proactively develop mitigation strategies.
• Resolve production software defects, perform root cause analysis, and implement fixes within agreed service levels.
• Perform remediation of security vulnerabilities in response to Tenable or equivalent scan reports, ensuring compliance with STIG, DHS 4300A, and NIST 800-53 frameworks.
• Support the continuous operation and resilience of legacy and hybrid systems, including SAS, OpenROAD, and SQL/PLSQL environments.
• Develop and maintain scripts, automation routines, and tools to improve monitoring, alerting, and deployment efficiency.
• Participate in change control, configuration management, and patching of system-level software and services.
• Document technical resolutions, software configurations, deployment procedures, and version updates to support audit readiness and knowledge transfer.
• Work collaboratively with developers, help desk, network engineers, and cybersecurity personnel to maintain service availability and compliance.
• Support test, staging, and production environments across virtualized platforms using VMware, Hyper-V, and containerized orchestration via Kubernetes.
• Participate in Agile/DevSecOps operations, using tools such as Jira, Confluence, and Bitbucket for tracking, knowledge sharing, and issue management.
• All other duties as assigned by management.

Skills/Qualifications

• Advanced expertise in system-level software development and support for RHEL, Windows, VMware, and virtualized infrastructures.
• Strong troubleshooting experience in production environments with a focus on availability, security, and rapid recovery.
• Knowledge of legacy and enterprise systems, including OpenROAD, Ingres, and SAS.
• Scripting experience in Bash, PowerShell, or Python to automate operational tasks and system updates.
• Familiarity with CI/CD pipelines, Kubernetes, and version control platforms in operational environments.
• Strong documentation, communication, and collaboration skills for multi-disciplinary coordination.

Education/Experience Requirements

• Bachelor\'s or Associate\'s degree in Computer Science, Math, Information Technology, Engineering, or related field. Five (5) years of directly relevant experience may substitute for two (2) years of formal education.
• Minimum of five (5) years of experience in one or more of current RHEL, Windows, and VMWare, and SAS.
• Minimum of five (5) years of performing security remediation to systems with vulnerabilities based on security scans.
• Minimum of two (2) years of experience in an Agile DevSecOps software and engineering environment and Methodologies.
• Minimum of two (2) years of experience with Kubernetes, Jira, Confluence, and Bitbucket.
• Experience supporting federal government systems, particularly within DHS or DoD environments, is strongly preferred.

Clearance

• U.S. citizenship required
• Must have or be eligible to obtain a Position of Public Trust or DoD Secret Clearance.

Certification Requirement

• CompTIA Security+
• Additional certifications (Microsoft Certified: Windows Server Hybrid Administrator, Red Hat Certified System Administrator (RHCSA), ITIL Foundation, or Network+) are a plus.

Work Location

• Remote
• North Carolina Region

Oasys is proud to be an equal opportunity employer for all protected groups, including protected veterans and individuals with disabilities.