Senior Backend Engineer
Variance is the trust layer for modern platforms.
We deploy AI agents that process billions of events every day to stop fraud, scams, and abuse, protecting millions of users. To enable this, we are building the real-time data and ML infrastructure that powers agentic AI systems and gives trustworthy platforms the upper hand against adversaries. We are hiring a senior backend engineer to design and scale the systems behind our AI agent platform, which is tackling some of the hardest adversarial problems in risk and safety. Fortune 500s and top-tier unicorns already rely on us, and we are just beginning to scale.
You’re a fit if you’re:
Care deeply about craftsmanship and building elegant, reliable systems
Have experience with distributed data stores such as Cassandra, DynamoDB, or Bigtable
Know your way around streaming systems like Kafka or Pub/Sub
Are excited to work with vector databases, LLMs, and real-time ML infrastructure to build world-class features
Take ownership and ship backend systems from design through production
Bonus points for:
Knowledge of rate-limiting and abuse-prevention infrastructure
Experience running systems in Kubernetes or container-based environments
What you'll do
Design and ship real-time backend systems that power AI agents at scale
Build data pipelines and ML infrastructure that support billions of daily events
Scale our product into new industries through pilots, demos, and integrations
Work directly with founders on massive-scale, adversarial problems
Our culture
We believe in a culture of ownership, urgency, and craft. We move fast, but we also care deeply about building things we’re proud of.
What we offer
Health care: we offer platinum-level medical, dental, and vision insurance
Unlimited PTO, sick leave, and parental leave
Up to $100 in reimbursement for personal health & wellness expenses each month
401(k) plan
Average salary estimate
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