# Member of Technical Staff - ML Infra at Trajectory

- Company: Trajectory
- What the company does: Research lab and product company building the platform for continual learning. Backed by Bessemer and Conviction.
- Company website: https://www.trajectory.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco
- Work setup: On-site
- Posted: 2026-10-06
- Apply by: 2026-11-23
- Apply: https://jobs.ashbyhq.com/trajectory/60480265-9c60-4281-9d09-2ed18268c58a?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/trajectory-member-of-technical-staff-ml-infra/

## About the role

As an ML Infrastructure Engineer at Trajectory, you will develop algorithms and own the innermost loop of our continual learning platform: the ML training stack! This role spans training, inference, and kernels. Bring deep expertise in at least one area and curiosity across the stack. We’ll shape your initial ownership around your strengths and have high opportunities for you to work across the whole ML training platform. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Strong fundamentals in distributed systems, networking, storage, and failure recovery, with experience shipping demanding systems
- Required deep specialization in one of training infrastructure, inference systems, or GPU kernels, supported by systems built or measurable optimizations delivered
- Strong Python skills and languages relevant to your specialty, such as C++, CUDA, or Triton
- Understanding of PyTorch, JAX, or comparable framework internals, with strong profiling and debugging skills
- Ownership and clear communication: work closely with researchers and deliver measurable performance gains while preserving correctness and reliability
- We value demonstrated capability over credentials

Tags: Member of Technical Staff

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/trajectory-member-of-technical-staff-ml-infra/