Senior Backend Engineer, Sessions & Workflows
Avala
Senior Backend Engineer, Sessions & Workflows
Posted 6 months ago San Francisco, CA full-time
About This Role
Build the serverless systems that orchestrate Avala's annotation sessions — matching tasks to annotators, managing work queues, and ensuring quality at scale across our global workforce of 15,000+ domain experts. You'll own the real-time workflow engine that powers production labeling.
What You'll Do
- Design and build serverless functions (AWS Lambda, Step Functions) for session orchestration
- Optimize task matching algorithms that assign work based on skill, quality, and availability
- Build real-time monitoring dashboards for annotation throughput and quality metrics
- Implement workflow automation for multi-stage QC review pipelines
- Scale the sessions system to handle 10x growth in concurrent annotators
- Collaborate with operations teams in SF and Nairobi to optimize workforce utilization
Requirements
- 4+ years building production backend systems
- Strong TypeScript and Node.js experience
- Experience with serverless architectures (Lambda, SQS, Step Functions)
- Knowledge of PostgreSQL, Redis, and distributed systems patterns
- Experience with real-time systems or workflow orchestration
Nice to Have
- Experience with workforce management or marketplace platforms
- Familiarity with annotation or data labeling systems
- Experience optimizing for latency-sensitive, high-throughput workloads
What We Offer
- Competitive salary and meaningful equity in the team building Fleet Learning Infrastructure for Physical AI
- Full health, dental, and vision coverage, plus FSA and unlimited PTO
- Work on the closed-loop data infrastructure that the next generation of autonomous systems learns from
- A team that built Tesla Autopilot's data infrastructure, now building something bigger
Vacancy posted 2 days ago
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