Senior Software Engineer, Annotation Systems

Obvio•San Carlos, CA

11d

About The Position

We're seeking a Senior Software Engineer to lead the design and scaling of backend infrastructure that powers our annotation workflows. These systems sit at the core of our machine learning feedback loops and operational pipelines. You’ll work across product, ML, and ops teams to build resilient, observable, and secure systems that translate ambiguous requirements into elegant software.

Requirements

8+ years of backend engineering experience
Proven ability to design and scale distributed systems
Operational rigor: you build systems with observability, alerting, and failure recovery in mind
Strong understanding of security principles, including least privilege, secure transport/storage, and compliance awareness
Ability to synthesize broad, sometimes ambiguous input into clean design and interfaces
Experience mentoring engineers and guiding architectural direction on complex projects

Nice To Haves

Familiarity with human-in-the-loop systems, labeling tools, or ML data pipelines

Responsibilities

Design and scale distributed systems that support high-throughput data review and annotation pipelines
Build systems that prioritize performance and reliability under real-world load
Apply strong security and privacy practices, including fine-grained access control, secure data handling, and auditable workflows
Translate messy, cross-functional requirements into clean APIs and backend abstractions
Collaborate with product, ML, and operations to streamline efficiency and feedback loops
Lead architectural decisions, conduct design reviews, and elevate engineering quality across the team
Mentor engineers to improve system ownership, technical judgment, and long-term thinking