Senior/Principal Full-Stack Engineer - Ship AI Systems

Sahaj Software; Austin (TX); On-site; USD 180,000 - 240,000; Full time

Job summary

Sahaj Software seeks a Lead or Principal Engineer who will stay close to code, go deep, and build data-heavy, distributed systems. You will mentor, design, and ship in production, advancing AI-powered capabilities while maintaining strong opinions and openness to change.

The role emphasizes hands-on coding, architectural vision, and ownership across complex problems, with a focus on scalable, robust software.

Qualifications

• Seasoned software engineer with 10+ years raising the bar for backend or full-stack teams.

Responsibilities

• Redesign a ClickHouse schema to query 85B rows in under 2 seconds.
• Maintain a vehicle telemetry platform handling billions of messages daily.
• Build the engineering spine of a mobile wallet used across four continents.
• Ship data products behind peer‑review submissions for a leading scientific publisher.
• Design and build systems with real-world complexity and production readiness.
• Write production code frequently and own end-to-end delivery.
• Interface services with modern AI stacks and model APIs.

Job description

Sahaj Software seeks a Lead or Principal Engineer who will stay close to code, go deep, and build data-heavy, distributed systems. You will mentor, design, and ship in production, advancing AI-powered capabilities while maintaining strong opinions and openness to change.

The role emphasizes hands-on coding, architectural vision, and ownership across complex problems, with a focus on scalable, robust software.