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# Senior Specialist, Software Engineer (Level 4)

- **Company:** Apollo Professional Solutions, Inc.
- **Location:** Huntsville, AL, United States
- **Experience:** Expert
- **Salary:** $75,000.0 - $110,000.0
- **Contract:** Permanent contract
- **Skills:** Application Lifecycle Management, Software Applications, Systems Engineering, Unit Testing, C++ (Programming Language), Capability Maturity Model Integration, Software Documentation, Software Quality, Communications Protocols, Computer Engineering, Linux, Embedded Software, Software Architecture, Real-Time Operating Systems, Red Hat Enterprise Linux, Rhapsody, Software Engineering, Software Systems, System Testing, Systems Integration, TCP/IP, UML, Model-Driven Development, SC Clearance, Integration Tests, Information Technology, Software Performance
- **Published:** September 10, 2026
- **Apply:** https://www.careerjet.com/job/usa2a8b21651bc312236160fdfe86cf75b/eaa

## About the Role

* Bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering, Systems Engineering, or a related technical discipline with a minimum of 6 years of relevant experience; OR
 * Master's Degree with a minimum of 4 years of related experience; OR
 * 10+ years of directly related experience in lieu of a degree.

Professional Experience

 * 6+ years of experience developing embedded real-time software systems.
 * 6+ years of hands-on C/C++ software development experience.
 * Experience working on safety-critical, mission-critical, or human-rated software systems.
 * Demonstrated ability to create and maintain comprehensive software development documentation across the full software lifecycle.
 * Proven success working within collaborative engineering teams.

Preferred Qualifications

 * Experience with Real-Time Operating Systems (RTOS), including:

 * NI Linux
 * Integrity
 * Red Hat Linux
 * QNX
 * Knowledge of communication protocols such as:

 * MIL-STD-1553
 * TCP/IP
 * RS-422
 * SPI
 * Experience using UML and model-based design tools including:

 * Enterprise Architect
 * Rhapsody
 * Cameo
 * Hardware and software integration experience.
 * Familiarity with laboratory test equipment, including oscilloscopes, multimeters, and power supplies.
 * Experience with software development IDEs and lifecycle management tools.
 * Understanding of CMMI Level 3 or higher software development processes.
 * Strong written and verbal communication skills.

## Description

We are seeking a highly skilled Senior Specialist, Software Engineer (Level 4) to join a team developing real-time embedded control and application software for advanced propulsion and aerospace systems. This is a hands-on engineering role supporting the complete software development lifecycle in a fast-paced laboratory and test environment.
The ideal candidate brings strong experience in embedded systems, real-time software development, and safety-critical applications, along with a passion for solving complex technical challenges. This role may also support live engine and system test activities, offering a unique opportunity to see your software operate in real-world environments.
Key Responsibilities Software Development & Integration (90%)

 * Participate in the design, development, and integration of real-time embedded control software and application software.
 * Support all phases of the software lifecycle, including:

 * Requirements analysis
 * System and software design
 * Implementation and coding
 * Unit testing
 * Integration testing
 * Verification activities
 * Develop and maintain software documentation throughout the development lifecycle.
 * Contribute to internal technical reviews, customer reviews, and program milestone reviews.
 * Collaborate with multidisciplinary engineering teams to ensure software performance, reliability, and compliance with program objectives.
 * Support hardware and software integration activities in laboratory and test environments.

Process Improvement & Engineering Excellence (10%)

 * Analyze software metrics and development data to identify process improvement opportunities.
 * Evaluate software engineering methodologies, tools, and best practices.
 * Assist with refining metric collection methods and software development processes.
 * Support continuous improvement initiatives that enhance software quality, efficiency, and organizational maturity., This position offers the chance to contribute to advanced aerospace, propulsion, embedded systems, and mission-critical software programs while working alongside experienced engineering professionals. You'll gain exposure to cutting-edge technologies, real-world system testing, and complex software architectures in a highly collaborative environment.
Keywords: Senior Software Engineer, Embedded Software Engineer, Real-Time Software Engineer, C++, C Developer, RTOS Engineer, Aerospace Software Engineer, Systems Engineering, Embedded Systems, Software Integration, Mission-Critical Software, Safety-Critical Software, Human-Rated Systems, Huntsville AL Jobs, Secret Clearance Jobs, Defense Engineering Jobs, Contract Software Engineer.