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Senior Machine Learning Engineer

bjakcareerGermanyActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Senior
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

ACTAI seeks a Senior Machine Learning Engineer in Germany to independently manage critical machine learning subsystems in production. This hands-on position suits an experienced practitioner who wants to build proactive AI applications for global users.

Role Overview

ACTAI is hiring a Senior Member of Technical Staff for machine learning in Germany. The professional in this role takes ambiguous problems, designs practical solutions, and ships systems that operate reliably at scale.

Key Responsibilities

Build core machine learning systems that power a proactive, long-horizon artificial intelligence product.
Own work completely from data preparation through training, evaluation, inference, and iteration.
Turn research concepts into working systems that function reliably in production environments.
Debug model failures and system problems utilizing real production signals.
Iterate rapidly by shipping, measuring outcomes, refining, and repeating the process.
Collaborate with research, product, and engineering colleagues to deliver user impact.
Mentor and review work from other machine learning engineers.
Operate under real production constraints including latency, cost, reliability, and safety.

Requirements

Experience building and shipping machine learning systems used by real users.
Understanding of how modern machine learning models behave and misbehave in production.
Ability to write production-quality code and think in systems rather than scripts.
Demonstrated ownership, independent work habits, and the capacity to push projects to completion.
Strong learning speed and clear communication skills.

Skills and Tools

Python
PyTorch
JAX
GPU-based training and inference systems

About the Company

ACTAI builds proactive applications for users worldwide who do not use complex prompting, bringing intelligence to conversations, errands, organizing, and workflows. The company focuses on persistent context, real-world task completion, and high reliability for long-running workflows to reduce hallucinations.

How to Apply

Interested candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the position located?

The role is located in Germany.

What technical skills are required?

The tech stack includes Python, PyTorch or JAX, and GPU-based training and inference systems.

What is the interview process like?

The interview process consists of 3 to 4 interviews conducted via virtual meetings and/or onsite.

What does the company focus on?

The company focuses on proactive AI applications, persistent context, real-world task completion, and high reliability for long-running workflows with minimal prompting.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site