Senior Software Engineer, AI Platform (US - Remote or Calgary)

Syndio is the leading pay governance and compensation intelligence platform. They are seeking a Senior Software Engineer to take ownership of major runtime surfaces and grow into a technical owner of their AI platform, working closely with product teams to design, ship, and operate systems end-to-end.

Responsibilities:

• Core runtime surfaces of syndi-api: the agent loop, tool execution and registry, memory, context management (Python, Postgres, Claude on Vertex, GCP)
• The eval system — offline gates and online detector/judge evals written onto production traces — and its growth as product teams adopt it
• Production operation: observability (Datadog LLM Obs), incident response, the reliability of an agent surface real customers use
• The platform's contribution seams: reviewing product teams' tool wrappers and evals, evolving the GET /tools registry and drift-detection contract
• Clarifying, designing, and implementing compliance and legal requirements for Syndi

Requirements:

• 5+ years building production backend systems
• deep comfort with Python, relational stores, and cloud infra (we're on GCP/Kubernetes)
• You've built LLM-powered systems in production — an agent loop, tool-calling integration, RAG, or eval infrastructure
• You design for operability: legal compliance, tracing, evals, and kill switches are part of the feature, not afterthoughts
• You can own a technical domain with light supervision: propose direction in writing with clear API specs, take review, ship, and carry the pager for what you shipped
• Strong written communication — our operating model runs on design docs and PR review across team boundaries
• experience being the platform side of a platform/product relationship
• SSE/streaming systems
• compliance-adjacent engineering (data minimization, auditability)
• prior Staff scope