Principal Software Engineer - IT - United States

Our client, IT is seeking a Principal Software Engineer  to join their team. As a Principal Software Engineer, you will be part of the IT organization supporting engineering and functional user groups. The ideal candidate will have a strong sense of accountability, the ability to translate complex requirements into secure, verifiable implementations, and the drive to continuously improve quality assurance strategies across the software delivery lifecycle.

Job Title: Principal Software Engineer 

Location: Round Rock, TX (Fully onsite)

Pay Range: $70-80/hr 

What's the Job?

• Design, build, and deploy AI-powered capabilities across the SDLC, including spec-driven development workflows that translate well-formed specifications into secure, verifiable implementations.
• Assure AI-generated code quality through guardrails, policy enforcement, and verification for code produced by AI assistants and agents.
• Apply SDLC and agent tooling skills to perform automated security checks (design review, dependency and supply-chain analysis, static/dynamic analysis orchestration, and release audit support).
• Integrate solutions with enterprise systems (source control, CI/CD, ticketing, security scanning, identity, and internal platforms) using APIs, webhooks, and protocols such as MCP (Model Context Protocol).
• Partner with engineering, security, product, and leadership stakeholders to define requirements, evaluate trade-offs, and support solution adoption while applying sound architecture and systems design practices (service boundaries, data models, secure defaults, observability, and extensibility).

What's Needed?

• Demonstrated experience developing and deploying AI-based solutions in production environments with measurable business or operational impact.
• Strong programming proficiency (e.g., Python, TypeScript/JavaScript, Go, or similar) and adherence to software engineering best practices, including testing, code quality, and maintainability.
• Hands-on experience with modern AI/LLM development, including context engineering, agentic system design (agent loop engineering, multi-agent orchestration, tool/function calling), and context window management (token budgeting, cost and latency optimization).
• Solid understanding of software architecture and systems design, including API design, event-driven patterns, and data modeling for scalability and extensibility.
• Demonstrated ability to work independently across the full delivery lifecycle—requirements analysis, solution design, implementation, deployment, and stakeholder engagement—with accountability for results.

What's in it for me?

• Work fully onsite in Round Rock, TX, building 1.
• Contribute to AI-powered capabilities that strengthen security, verification, and reliability across the SDLC.
• Lead and influence quality assurance strategy improvements through research, evaluation, and implementation of changes.
• Collaborate with engineering, security, product, and leadership stakeholders to drive adoption of practical, well-architected solutions.
• Role structure that does not require overtime; no OT for this role without manager approval.

If this is a role that interests you and you'd like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you!

About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells.

ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent.