Senior Backend Engineer for AI‑Driven Procurement

Negotiateai Inc.; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

NegotiateAI in San Francisco, backed by Menlo Ventures, is building AI-powered procurement solutions for enterprises. We are hiring a hands-on senior engineer to own backend services, ERP integrations, and end-to-end features in collaboration with early customers.

You’ll contribute to the product with architectural direction, mentor teammates, and ensure security/privacy practices in a fast-paced startup environment.

Qualifications

• 5+ years of professional software engineering experience with end-to-end production systems.
• Strong backend skills; API design and data pipelines are essential.
• Hands-on experience building with LLMs in production and agentic workflows.
• Experience cleaning and normalizing messy real-world data and establishing ground truth.
• Comfort with cloud infrastructure and standard production practices.

Responsibilities

• Build and own core backend services, including ERP integrations and supplier data.
• Develop agentic systems for categorization, part identifiers, and online benchmarks.
• Ship real-time spend visibility and supplier benchmarking features, iterating on feedback.
• Create evaluation and monitoring for AI systems to catch regressions.
• Set architectural direction and mentor junior engineers.
• Apply security and data privacy practices, including anonymization and tokenization.

Skills

Backend engineering

API design

Data pipeline work

LLMs in production

Security and data privacy

Cloud infrastructure

Mentoring

Tools

TypeScript

AWS or GCP

CI/CD tooling

Job description

NegotiateAI in San Francisco, backed by Menlo Ventures, is building AI-powered procurement solutions for enterprises. We are hiring a hands-on senior engineer to own backend services, ERP integrations, and end-to-end features in collaboration with early customers.

You’ll contribute to the product with architectural direction, mentor teammates, and ensure security/privacy practices in a fast-paced startup environment.