Apply on company website Nyc, United States of America On-site Full-time USD 190,000 – 250,000 / year

Cinder is hiring a Senior Software Engineer - Full Stack

Responsibilities

  • Build AI agents that review content against customer policies, callable from within a durable workflow engine.
  • Move from hardcoded LLM prompts to a configurable agent spec that customers can edit and deploy themselves.
  • Develop nodes for a workflow engine built on Restate to automate moderation pipelines, NCMEC reporting, and enforcement actions.
  • Work on review queue tooling features such as QA decision overrides, attribute-level labeling, forms, and skills-based routing.
  • Build analytics and metrics dashboards with a React frontend and Django/GraphQL API backend.
  • Integrate two-way user communications via Salesforce and Zendesk so moderators can contact users and see conversation history without leaving Cinder.
  • Help define SLIs, improve pipeline throughput, and own oncall for systems where downtime means moderation stops.

Requirements

  • 5+ years building production software with experience across the stack: Django or similar backend frameworks, React or similar frontend frameworks, relational databases, and message/event systems.
  • Identified a customer problem independently and built an end-to-end solution for it.
  • Experience with high-throughput, data-intensive systems, including reasoning about pipeline throughput, latency, and tradeoffs at scale.
  • Have a real point of view on how AI tooling has changed the way you write code; fluent and opinionated in using AI tools.
  • End-to-end ownership: ability to own features from data model through API through UI.
  • Clear written communication in PRs, Slack, and customer-facing documentation.

Nice to Have

  • Experience in Trust & Safety or abuse prevention.
  • Understanding of how attackers exploit platforms.
  • Experience at a startup or early-stage company where you wore multiple hats and shipped fast with limited resources.
  • Familiarity with workflow/automation systems, policy engines, or case management tools.
  • Experience working directly with enterprise customers or in a customer-facing engineering role.

Work Arrangement

On-site — NYC

Additional Information

  • Company holds at least two all-company events per year.
  • Health, vision & dental benefits offered.
  • 401(k) plan with employer matching.
  • Fully paid commuter benefits.
  • Fully stocked office with paid lunch and dinner.
Job Details
Location Nyc, United States of America
Work mode On-site
Employment Full-time
Salary USD 190,000 – 250,000 / year
Department Product & Engineering
Category Full-Stack
Posted a day ago
Application On company website
About company
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Cinder is mission-critical infrastructure that protects platforms from abuse, fraud, and manipulation.

We built Cinder to outmatch the speed and scale of AI-empowered bad-actors. The result is the only solution that integrates custom cutting-edge Agents, an industry-leading platform, and the services needed to disrupt modern threats.

Cinder transforms policies into agentic workflows that consistently make accurate decisions at scale. Our AI agents adapt to your specific policies and learn continuously from both their mistakes and successes, enforcing standards across millions of decisions to protect your brand, product, and users from abuse.

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