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Junior Backend Engineer

Baselayer

$122,000 - $142,000
Oct 8, 2025
San Francisco, CA, US
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Baselayer is looking for a backend engineer to help build and maintain their intelligent business identity platform, which aims to verify businesses, automate KYB, and monitor real-time risk. The role involves developing APIs, designing backend services, managing data pipelines, integrating AI/ML models, and ensuring security and compliance within a regulated environment.

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.
  • knowledge graphs and LLMs for dynamic use cases.
  • reinforcement learning from human feedback (RLHF) and fine-tuning (e.g., LoRA)

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.
  • 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.

Other

  • Hybrid in SF. In office 3 days/week
  • Flexible PTO
  • Healthcare, 401K
  • Smart, genuine, ambitious team
  • highly feedback-oriented. We believe in radical candor and using feedback to get to the next level.