Principal Software Engineer

Location:

Plano, TX or Irvine, CA (Onsite)

Type:
Full-Time W2

We're looking for a Principal Software Engineer to lead the design and modernization of large-scale enterprise applications while helping drive the adoption of AI-assisted and agentic software engineering.

This is a hands‑on technical leadership role for someone who enjoys solving complex architectural challenges, building modern cloud‑based solutions, and influencing how software is delivered across an organization.

• Design and build enterprise applications, APIs, integrations, and distributed systems
• Lead development using C#, .NET, SQL Server, Azure, and modern web technologies
• Drive modernization of legacy applications and platforms
• Define engineering standards, architectural patterns, and best practices
• Partner with engineering, Dev Ops, security, and platform teams
• Leverage AI coding assistants and agentic development tools to improve software delivery
• Mentor engineers and provide technical leadership across multiple teams

• 10+ years of software engineering experience
• Deep expertise in C#/.NET
• Strong experience with SQL Server and T-SQL
• Experience designing APIs, integrations, and distributed systems
• Strong Azure cloud experience
• Knowledge of messaging, caching, resiliency, concurrency, and asynchronous processing
• Software architecture and design pattern expertise
• Experience with AI coding assistants, agentic development platforms, or AI-enabled engineering practices

• Python, JavaScript, or Type Script experience
• Experience modernizing large-scale enterprise applications
• Prior experience as a Principal Engineer, Staff Engineer, or Architect
• Experience in a regulated industry

The pay range for this position is $170000.00 - $233000.00/yr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Extensive internal growth and professional development opportunities including tuition reimbursement. Comprehensive benefits package including Medical/Dental/Vision. Wellness program to support both mental and physical health. Generous paid time off options to support work-life balance.

This is a Permanent position based out of Irvine, CA.

This is a fully onsite position in Irvine,CA.

This position is anticipated to close on Nov 6, 2026.

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change.

That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who…