Demo

Principal Software Engineer

SOC LLC
St Louis, MO Contractor
POSTED ON 6/24/2026
AVAILABLE BEFORE 7/22/2026

Principal Software Engineer needed for a contract opportunity with SOC’s client to work onsite on a hybrid basis in St. Louis, MO.


Job Responsibilities

  • Perform system level integration with multiple vendors and software components
  • Apply fundamental knowledge of software engineering principles and core concepts (e.g., data structures, algorithms, computer architecture, operating systems, and databases) to create software solutions that meet project-based needs
  • Apply core computer science concepts in the development, testing, and documentation of software units
  • Participates in code reviews with the systems engineers, software architects, and other technical staff
  • Develop, document and support testing of products, systems, or subsystems
  • Work on taking over legacy code base
  • Work on Static Code analysis tools, triaging and mitigating the results
  • Communicate with users, other technical teams, and senior management to collect requirements, describe software product features, technical designs, and product strategy
  • Ability to complete a technical project independently and manage other engineers
  • Specify and evaluate supplier subsystems and services
  • Document component and subsystem specifications
  • Provide budget, cost, and schedule input for design assignments
  • Support, communicate, reinforce, and defend the mission, values, and culture of the organization
  • Attend appropriate engineering, customer, or business meetings
  • Mentor and coach less-experienced engineers
  • Communicate clearly (written and oral) with manufacturing, supply chain, program management, and the customer as required

Qualifications

  • Bachelor's degree in Computer Science, Computer Engineering or related field
  • 8 years of industry experience in delivering high-quality, innovative applications and programming experience in C
  • Proven Computer Science fundamentals in embedded development, algorithm design, problem solving, and complexity analysis
  • Experience influencing software engineering best practices within the team
  • Excellent verbal and written communication
  • Detail-oriented, organized, and able to work well in a team environment as well as independently with little day-to-day guidance

Desired Qualifications

  • Experience with running Application Security and Development practices
  • Experience taking a leading role in building complex software systems that have been successfully delivered to customers
  • Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations
  • Basic knowledge of network communications and cybersecurity practices


Employment Prerequisites

The following requirements must be met to be eligible for this position: successful completion of a background investigation and drug urinalysis.

SOC, a Day & Zimmermann company, is an Equal Opportunity Employer, EOE AA M/F/Vet/Disability.

Note: Any pay ranges displayed are estimations, which may have been provided by job boards. Actual pay is determined by an applicant’s experience, technical expertise, and other qualifications as listed in the job description. All qualified applicants are welcome to apply.

Salary : $60 - $66

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