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Junior Backend Engineer

Baselayer

$122,000 - $142,000
Sep 2, 2025
San Francisco, CA, US
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Baselayer is revolutionizing the way businesses approach fraud prevention and compliance by building identity solutions for financial institutions, leveraging AI/ML and knowledge graphs.

Requirements

  • 1-3 years of experience in backend development, working with Python and building APIs
  • Comfortable working with large-scale data and enjoy optimizing performance for high-volume systems.
  • Strong interest in AI/ML integration, particularly with LLMs, and are eager to learn about new technologies.
  • Prioritize security and compliance in backend systems, especially in regulated environments like KYC/KYB.
  • Keen eye for detail and take pride in writing clean, maintainable code while optimizing for performance.
  • Write unit tests, debug issues, and monitor backend services for performance and reliability, while continuously improving backend architecture to handle diverse data and use cases.

Responsibilities

  • Build and maintain RESTful APIs and integrate them with various data sources, ensuring scalability, high performance, and adaptability for autonomous agents in the GTM space.
  • Architect and design core backend services that support KYC/KYB processes, leveraging knowledge graphs and LLMs for dynamic use cases.
  • Develop and maintain robust data pipelines for identity data processing, focusing on scalability and performance when handling large-scale, high-performance data flows.
  • Collaborate with AI/ML teams to integrate models, including reinforcement learning from human feedback (RLHF) and fine-tuning (e.g., LoRA), to improve LLMs for specific use cases within the identity space.
  • Build the infrastructure to support future AI/ML hires and projects, creating a scalable platform foundation for continued innovation.
  • Ensure backend systems meet industry standards for security, privacy, and compliance, particularly around KYC/KYB regulations.
  • Implement optimizations for large-scale data management, ensuring backend services can efficiently process identity data while maintaining reliability.

Other

  • You want to learn from the best of the best, get your hands dirty, and put in the work to hit your full potential.
  • You are looking to be an impeccable core/api backend engineer.
  • You thrive in a high-trust, ownership-focused environment and are comfortable working across different levels of abstraction.
  • Problem-solver who navigates the unknown confidently.
  • Proactive self-starter who thrives in dynamic settings.