Software Engineer III

Job Description:

## Your Mission at Sigmatech

Sigmatech is dedicated to advancing critical national missions through modern engineering excellence. Our teams support defense, space, and federal customers by delivering secure, high?quality software solutions that accelerate mission outcomes. We combine technical rigor, human?centered design, and a culture of continuous improvement to deliver meaningful impact-fast.

As a Software Engineer III, you will help shape the future of mission?focused software delivery. You'll work hands?on with customer teams, introduce modern engineering practices, build production?ready solutions, and contribute to a culture where learning, collaboration, and technical excellence thrive.

## About You

You thrive in environments where impact matters. You enjoy working directly with users and mission owners, solving problems with empathy, clarity, and creativity. You move quickly, value iterative delivery, and believe that real progress happens when working software reaches real users.

You might be a great fit if:

• You're energized by collaborating directly with customers and teammates.
• You prefer delivering working software frequently over long planning cycles.
• You're comfortable navigating ambiguity and turning uncertainty into clarity.
• You care deeply about code quality, security, performance, and user outcomes.
• You enjoy mentoring others and elevating the capabilities of the teams around you.

## What You'll Do

As a Software Engineer III at Sigmatech, you will:

• Build secure, scalable, user?focused applications using modern engineering practices.
• Collaborate daily with designers, product leads, and mission partners to deliver high?value features.
• Champion practices such as DevSecOps, continuous integration, automated testing, and cloud?native delivery.
• Help customers adopt modern software delivery approaches and guide them through technical decision?making.
• Participate in pair programming, code reviews, architecture discussions, and iterative planning.
• Continuously refine your skills and contribute to a culture of knowledge sharing and improvement.
• Communicate technical decisions clearly while tailoring your message to diverse stakeholders.
• Ensure solutions meet mission, security, and performance requirements while maintaining rapid delivery momentum.

Experience and Skills:

## Required Qualifications

• 5-8+ years of professional software engineering experience.
• Experience developing in one or more modern languages (e.g., C#, Typescript, Python, Go).
• Experience building and deploying applications using cloud platforms (AWS, Azure, or similar).
• Strong understanding of testing practices, automated pipelines, and secure coding principles.
• Experience working closely with users, product teams, or customer stakeholders.
• Ability to work in a collaborative, iterative environment (Agile/Lean methodologies).
• U.S. citizenship required; ability to obtain and maintain a security clearance (if not already cleared).

## Preferred Qualifications

• Current DoD Secret or TS/SCI clearance.
• Experience supporting defense, intelligence, or federal programs.
• Familiarity with containerization (Docker), orchestration (Kubernetes), and IaC tools (Terraform, CloudFormation).
• Experience with pair programming or XP practices.
• Strong problem?solving skills and the ability to mentor mid? and junior?level engineers.

## Why Sigmatech

• Mission-first work that directly supports national security and federal innovation.
• A culture that values respect, transparency, and continuous growth.
• Opportunities for hands?on learning, technical development, and career progression.
• Competitive compensation, comprehensive benefits, and professional development support.
• The chance to solve meaningful problems alongside passionate engineers and mission partners.

## Ready to Make an Impact?

If you're excited about designing, building, and delivering software that matters from day one, Sigmatech would love to meet you.

Apply Today
*Join us and help shape the future of mission?critical technology.*

*In compliance with Colorado's Equal Pay for Equal Work Act, the salary range for this role is $110,000 to $130,000; however, Sigmatech considers several factors when extending an offer, including but not limited to, experience, education/training, key skills, location and often contractual requirements.*
From: Sigmatech, Inc.