Senior ML Engineer — Build Production-Grade AI Systems

Bjak; Germany (OH); On-site; USD 200,000 - 260,000; Full time

Job summary

A1 is seeking a Senior Member of Technical Staff, Machine Learning, to own critical ML subsystems in production. This hands‑on role focuses on depth, delivering reliable systems at scale, and turning research into production‑ready solutions.

You will build, optimize, and maintain core ML components, collaborating with research, product, and engineering to create real user impact and measurable improvements.

Qualifications

• You have built and shipped ML systems used by real users.
• You understand how modern ML models behave — and misbehave — in production.
• You write strong, production‑quality code and think in systems, not scripts.
• You take ownership, work independently, and push work across the finish line.
• You learn fast, communicate clearly, and improve through iteration.

Responsibilities

• Build core ML systems that power a proactive, long‑horizon AI product.
• Own work end‑to‑end: data preparation, training, evaluation, inference, and iteration.
• Turn research ideas into working systems that run reliably in production.
• Debug model failures and system issues using real production signals.
• Iterate quickly: ship, measure outcomes, refine, and repeat.
• Collaborate with research, product, and engineering to deliver user impact.

Skills

production‑quality code

ownership & independence

fast learner

clear communication

Tools

Python

PyTorch

JAX

GPU‑based training/inference

Job description

A1 is seeking a Senior Member of Technical Staff, Machine Learning, to own critical ML subsystems in production. This hands‑on role focuses on depth, delivering reliable systems at scale, and turning research into production‑ready solutions.

You will build, optimize, and maintain core ML components, collaborating with research, product, and engineering to create real user impact and measurable improvements.