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Lead Principal Software Engineer - AI Development

Remote Full-time $173.8K/yr - $225K/yr

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Experience Level

Senior

Qualifications

To be eligible for this position, candidates should possess:Proven experience using AI coding tools for designing, developing, testing, and deploying features in production environments. Strong problem-solving skills with the ability to tackle complex technical challenges. Excellent communication skills to collaborate effectively within a remote team. A proactive mindset towards learning and employing the latest AI tools and technologies.

About the job

Two Six Technologies is searching for a Lead Principal Software Engineer focused on AI development to join the Sigma product engineering team. This fully remote position centers on creating and improving AI-driven features for a mission-critical SaaS platform used in radiological and nuclear detection.

Role overview

This role involves designing, developing, testing, implementing, and maintaining software across the entire product lifecycle. The work emphasizes integrating AI-assisted development methodologies and tools to build, test, and sustain applications, services, APIs, and user interfaces. The team operates in a small, agile, and highly collaborative environment, where independent initiative and clear communication matter.

What you will do

  • Apply AI coding tools throughout the software development process
  • Contribute to architecture, design, and implementation of multi-tier, AI-enabled platforms
  • Collaborate with both human team members and specialized AI agents
  • Focus on security, privacy, and operational outcomes for end users
  • Support the transition from Java to Go on the backend

Requirements

  • Demonstrated experience with AI coding tools in production application development
  • Proven ability to design, develop, test, and deploy software in a collaborative setting
  • Comfort navigating complex problems and ambiguity
  • Strong sense of honesty, reliability, and trustworthiness
  • Ability to work independently and as part of a remote team

About Sigma

Sigma is a sensor-agnostic SaaS platform for government and commercial clients, supporting radiological and nuclear detection. The team uses an agentic development model, collaborating with AI agents for architecture, testing, and research. AI is deeply integrated into every stage of development, not just as an add-on. The team maintains a structured knowledge system to coordinate human and AI contributions.

This position offers flexibility in managing your work schedule to support effective collaboration across the remote team.

About Two Six Technologies

Two Six Technologies is a leader in developing innovative solutions to address complex global challenges. Our collaborative environment fosters trust and empowers our team to create impactful products that enhance global safety.

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