16h ago

Software Engineer, Backend/Applied ML

Redwood City, CA

$150k-$300k / year

full-timelead Hybridai-ml

🛠 Tech Stack

💼 About This Role

You'll join the Safety Engineering team at Character.AI, designing and scaling backend systems and applied ML to tackle integrity and safety challenges. You'll architect solutions for human-to-AI interaction safety and provide technical leadership to define industry best practices. This is a high-impact role shaping the trustworthiness of a leading consumer AI platform.

🎯 What You'll Do

  • Design and build scalable backend systems for integrity features.
  • Lead technical design of solutions for detecting and mitigating risks.
  • Develop and deploy ML models for content classification and anomaly detection.
  • Collaborate cross-functionally on requirements and system design.

📋 Requirements

  • 8+ years of professional software engineering experience with backend focus.
  • Degree in Computer Science or related technical field.
  • Proven track record with large-scale distributed systems.
  • Expertise in backend languages like Python, Go, Java, or C++.

✨ Nice to Have

  • Prior experience in a dedicated Trust & Safety or Integrity engineering team.
  • Contributions to open-source projects or relevant publications.
  • Experience leading large, cross-cutting technical projects.

🎁 Benefits & Perks

  • 💵 Competitive salary with equity
  • 🏖️ Flexible hybrid work
  • 🚀 High-impact role at a fast-growing AI unicorn

🚩 Heads Up

  • Role combines backend engineering and applied ML, which may require dual expertise.
  • Experience level requirement (8+ years) is high for a role that includes mentorship and leadership.
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