Senior Backend Engineer

Baselayer
San Francisco, CA

About Baselayer: With experience across far-ranging banks, Fortune 500 tech co’s, fintech unicorns 🦄, and AI experts, Baselayer is built by financial institutions, for financial institutions. Started in 2023 by experienced founders Jonathan Awad and Timothy Hyde, Baselayer has raised $20 Million and hit $2 Million in ARR faster than any other identity company in history. Today more than 2,000 Financial Institutions and Government Agency customers later, Baselayer is revolutionizing the way businesses approach fraud prevention and compliance. 🏆

Check out their press release here →

About You: 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’re not just doing it for the win—you’re doing it because you have something to prove and want to be great. You are looking to be an impeccable core/api backend engineer.


  • You have 2-5 years of experience in backend development, working with Python and building APIs

  • You’re comfortable working with large-scale data and enjoy optimizing performance for high-volume systems.

  • You have a strong interest in AI/ML integration, particularly with LLMs, and are eager to learn about new technologies.

  • You prioritize security and compliance in backend systems, especially in regulated environments like KYC/KYB.

  • You have a keen eye for detail and take pride in writing clean, maintainable code while optimizing for performance.

  • 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.

  • Incredibly intelligent and clever. You take pride in your code

  • Highly feedback-oriented. We believe in radical candor and using feedback to get to the next level.

Responsibilities:


  • API Development & Integration: 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.

  • Backend System Design: Architect and design core backend services that support KYC/KYB processes, leveraging knowledge graphs and LLMs for dynamic use cases.

  • Data Processing & Management: Develop and maintain robust data pipelines for identity data processing, focusing on scalability and performance when handling large-scale, high-performance data flows.

  • AI/ML Integration: 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.

  • Platform Infrastructure: Build the infrastructure to support future AI/ML hires and projects, creating a scalable platform foundation for continued innovation.

  • Security & Compliance: Ensure backend systems meet industry standards for security, privacy, and compliance, particularly around KYC/KYB regulations.

  • Performance Optimization: Implement optimizations for large-scale data management, ensuring backend services can efficiently process identity data while maintaining reliability.

  • Testing & Debugging: 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.

Benefits:


  • Hybrid in SF. In office 3 days/week

  • Flexible PTO

  • Healthcare, 401K

  • Smart, genuine, ambitious team

Posted 2025-11-25

Recommended Jobs

CNC Machine Operator ( OXNARD CA)

Advanced Structural Technologies
Los Angeles, CA

CNC Machine Operator ( OXNARD CA) Location Los Angeles, CA : About Us Advanced Structural Technologies (AST) is a leading manufacturer specializing in forged, flow-formed, and machined products for …

View Details
Posted 2026-01-10

Staff Backend Engineer

Heron Finance
San Francisco, CA

Founded by two ex-Coinbase employees and backed by top investors including Andreesen Horowitz, IDEO, and Kindred Ventures, Heron Finance has built a tech platform to bring high-quality private market…

View Details
Posted 2025-11-25

Accounts Payable Specialist (Construction Industry) POST NUMBER: 456003

Santa Ana, CA

Job Title: Construction Accounts Payable Specialist Location: Santa Ana, Ca  Job Type: Contract-Hire Salary: $26-$28/hr. About the Role: An established commercial construction compa…

View Details
Posted 2025-12-21

Product Backend Engineer

Xai
Palo Alto, CA

About xAI xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on eng…

View Details
Posted 2025-11-25

Senior inbound product manager data

ServiceNow
Santa Clara, CA

Company Description It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today — ServiceNow stan…

View Details
Posted 2026-01-09

Principal Product Manager, Play Platform

Roblox
San Mateo, CA

The Play platform is the gateway to enable all play on the platform - it supports massive scale to enable 45m concurrent players to join games, it determines where to launch game servers across our g…

View Details
Posted 2025-11-28

Cold Storage Warehouse Agent

First Rate Staffing
South San Francisco, CA

The job description for working at a TSA cold storage warehouse includes responsibilities such as: Managing the storage of products in refrigerated warehouses. Maintaining inventory and ensurin…

View Details
Posted 2026-01-07

Buyer II

Yamamotoyama
Pomona, CA

Who Are We Yamamotoyama U.S.A. stands as a testament to the art of traditional Japanese green tea and nori seaweed products, upholding a commitment to unparalleled quality since 1690. Our culture …

View Details
Posted 2025-12-27

Frontend-leaning Fullstack Developer (medical imaging)- Medical Imaging

Heartflow
San Francisco, CA

Heartflow is a medical technology company advancing the diagnosis and management of coronary artery disease, the #1 cause of death worldwide, using cutting-edge technology. The flagship product—an AI…

View Details
Posted 2026-01-07