Sean Lachenberg, Founder & Principal

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Role

Founder & Principal

Background

Regulated industries

Education

B.S. CS, Georgia Tech · Intelligence & Media

Based in

Atlanta area

§A · ABOUT SEAN

Founder & Principal, OneSun Strategies

Founder & Chief Engineer, LockN

Building agentic infrastructure. Advising modern engineering teams.

Sean Lachenberg is a Georgia Tech computer science alumnus, with concentrations in Intelligence and Media, and founder of LockN and OneSun Strategies.

Through OneSun, he has delivered executive technology advisory on modernization, engineering operations, and AI infrastructure.

He leads LockN’s self-hosted R&D in agentic infrastructure and Personal AI, connecting context, attributed signals, operating standards, assessments, and receipts.

He brings 10+ years of experience in full-stack development, .NET platforms, and distributed systems, including leadership in regulated industries. At Compass, he developed and deployed autonomous measurement systems in air-gapped environments at U.S. defense facilities, spanning software, UX, robotic motion, and electromagnetic data acquisition.

At OncoHealth, he led engineering for Iris’s mobile and supporting platform for virtual patient care, including 24/7 access to oncology nurses. His work spanned symptom monitoring, care-team messaging, caregiver access, appointment scheduling, content, and outreach. He served as Principal Software Engineer and also led utilization-management modernization.

At Landis+Gyr, he worked on Command Center, an enterprise smart-meter platform, and led a multi-regional Agile development team.

§B · EXPERIENCE

Delivered, prior, and current work.

DELIVERED ADVISORY

OneSun

Executive technology advisory on modernization readiness, engineering operations, delivery accountability, and foundational AI investment.

CURRENT WORK

LockN

Self-hosted R&D in agentic infrastructure and Personal AI around user context.

PRIOR EMPLOYMENT

Compass

Autonomous measurement systems in air-gapped environments at U.S. defense facilities: full-stack software, UX modernization, robotic motion and navigation, and electromagnetic measurement. Developed novel measurement algorithms and custom hardware integrations, supported defense clients, and mentored the software team. Separately, contributed to technical proposals seeking SBIR funding for research involving reinforcement learning.

PRIOR EMPLOYMENT

OncoHealth · Iris

Engineering leadership for Iris’s mobile app and supporting platform, serving people living with cancer and their caregivers, with 24/7 access to oncology nurses.

PRIOR EMPLOYMENT

OncoHealth

Principal Software Engineer; led utilization-management modernization.

PRIOR EMPLOYMENT

Landis+Gyr

Command Center, an enterprise smart-meter platform: multi-tenant configuration, dynamic interfaces, and root-cause analysis of release-blocking issues in critical-to-quality testing. Led a multi-regional Agile team and directed three offshore automation and DevOps teams.

§C · WORKING TOGETHER

Ways to engage.

Work is scoped around a defined initiative, a responsible owner, and agreed deliverables, whether that is advisory, hands-on implementation, or continuing fractional leadership. Adopting LockN is not a condition of working with OneSun. For AI-specific work, the advisory and AI workflow diagnostic are the most direct starting points.

✓ Architecture decisions
✓ Platform modernization
✓ AI integration
✓ Engineering delivery
✓ Fractional technical leadership

Bring a defined initiative.

What architecture or delivery problem does your team need to resolve next quarter? Start there.