[{"@context":"https://schema.org","@type":"JobPosting","title":"Talent Acquisition Manager (Maternity cover) (f/m/d)","description":"

Aleph Alpha is one of the few companies in Europe doing serious foundation model training. Our mission is to deliver category-defining AI innovation that enables open, accessible, and trustworthy deployment of GenAI in industrial applications.

About the role

The Talent Acquisition Manager is an individual contributor role responsible for day-to-day recruitment activities that support Aleph Alpha’s growth and hiring goals. In this role, you will partner with our Tech teams, including researchers, engineers, and business leaders, to identify their hiring needs and develop hiring plans to attract, hire, and retain top talent.

Key Responsibilities:

Develop and implement talent attraction strategies that align with business and team goals.
Manage full-cycle, data-driven, best-in-class recruitment with a strong focus on candidate experience
Utilize recruitment analytics and key performance metrics to track recruitment effectiveness, assess talent acquisition strategies, and drive data-based hiring decisions for continuous improvement.
Build and maintain a pipeline of qualified candidates for key roles by proactively sourcing talent, networking and building relationships to meet future hiring needs.
Enhance Aleph Alpha’s employer brand awareness by highlighting our mission, culture, and values through targeted recruitment marketing initiatives that engage and inspire top talent.

What you'll bring :

Proven experience in hiring top talent, ideally supporting highly s","datePosted":"2026-06-21","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/2a4a86a2-6169-4597-a40e-6c27f6a0a45d","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}},{"@context":"https://schema.org","@type":"JobPosting","title":"Senior AI Software Engineer – Model Training (f/m/d)","description":"
Our Mission
Aleph Alpha is one of the few companies in Europe doing serious foundation model pre- and post-training. We're building models that have general-purpose capabilities, and specifically excel at addressing the needs of our customers.
We're looking for exceptional Software Engineers to join our model training team. Most of the team is based in Heidelberg .
Team Culture
At Aleph Alpha, we foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organizational structure with efficient, supportive management that enables quick decision-making, open communication, and a strong sense of shared purpose.
We believe a strong engineering culture is the key to model training success. We like Extreme Programming and favor trunk-based development. We often mob-program, which keeps us aligned and means we always learn from each other.
About the Role
As a Software Engineer in Model Training, you'll work across our full stack. Some weeks you might be optimizing how training loads are scheduled on our cluster and making the pipeline more robust and performant so we can iterate faster. Other weeks, you'll be enabling large-scale code execution for reinforcement learning. And at other times, you might dig deep into our evaluation codebase to lift inference throughput on evals.
No two days are the same. Things move fast, and your ability to focus and prioritize is what lets you unblock the team day-to-day while designing the high-quality tooling and infrastructure that speeds us up long-term.
We're still building out our training pipeline and ","datePosted":"2026-05-29","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/0ed0c9ef-8e9f-4161-80e6-55fc95c93736","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}},{"@context":"https://schema.org","@type":"JobPosting","title":"Senior AI Engineer – Pre-training Data (f/m/d) ","description":"
Our Mission
Aleph Alpha is one of the few companies in Europe doing serious foundation model pre-training. Our customers - in finance, manufacturing, public administration - need models that understand German, meet European regulatory requirements, and work reliably in high-stakes settings. We're building that in Heidelberg.
We're growing our pre-training team and hiring someone to passionately work on data: defining what goes into our models, building the systems that source and prepare it, and ensuring our training team has the highest-quality data to push model capabilities forward.
Team culture
At Aleph Alpha, we foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organizational structure with efficient, supportive management that enables quick decision‑making, open communication, and a strong sense of shared purpose.
About the Role
As a Senior AI Engineer in Pre-training Data, you will work across the full stack of data preparation - from sourcing and acquisition to processing, filtering, and mixture design. Some weeks you'll be deep in data quality analysis, understanding what makes a corpus valuable and how its composition affects downstream performance on public and bespoke evaluation tasks. Other weeks you'll be optimising large-scale processing pipelines or building tooling that gives the team visibility into what our models are actually training on. And some weeks you'll be reading the latest research on pre-training data methods, translating findings into experiments you can run against our stack.
We approach data work in an ev","datePosted":"2026-04-23","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/af5ac8a9-31a7-4017-9cd9-0a8b360ad937","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}},{"@context":"https://schema.org","@type":"JobPosting","title":"Senior AI Researcher - Pre-training (f/m/d)","description":"
Our Mission
Aleph Alpha is one of the few companies in Europe doing serious foundation model pre-training. Our customers — in finance, manufacturing, and public administration — need models that understand German, meet European regulatory requirements, and work reliably in high-stakes settings. We’re building that in Heidelberg.
We are hiring a Senior AI Researcher to join our Pre-training team and to advance the architecture and training of our next generation of foundation models. If you are excited about designing inference-efficient architectures, optimising training recipes that scale reliably, and training models on a large scale cluster (thousands of NVIDIA Blackwell GPUs), we would love to hear from you.
Team Culture
We foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organisational structure with efficient, supportive management that enables quick decision-making, open communication, and a strong sense of shared purpose. We collaborate closely on complex technical problems, working in pairs or using mob programming to resolve challenging issues.
About the Role
As a Senior AI Researcher in Pre-training, you will work on the core technical problems that determine whether large-scale pre-training succeeds: architecture, optimisation, stability, and scaling up.
You will work at the intersection of model architecture, training dynamics, and large-scale distributed training, translating empirical observations into principled training decisions. From small-scale proxy experiments to multi-thousand-GPU runs, you will ensure our mo","datePosted":"2026-04-22","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/80dc6ee6-dece-4d4b-9906-ea930338f245","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}},{"@context":"https://schema.org","@type":"JobPosting","title":"Senior AI Researcher - Pre-training Data (m/f/d)","description":"
Our Mission
Aleph Alpha is one of the few companies in Europe doing serious foundation model pre-training. Our customers - in finance, manufacturing, public administration - need models that understand German, meet European regulatory requirements, and work reliably in high-stakes settings. We're building that in Heidelberg.
We're growing our pre-training team and hiring someone to passionately work on data: defining what goes into our models, building the systems that source and prepare it, and ensuring our training team has the highest-quality data to push model capabilities forward.

Team Culture
At Aleph Alpha, we foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organisational structure with efficient, supportive management that enables quick decision‑making, open communication, and a strong sense of shared purpose.

About the role
As a Senior AI Researcher for Pre-training Data, you will shape and improve the underlying scientific methodology behind our pre-training corpora while also co-engineering the software and systems that enable this. Working with engineers and other researchers to build scalable pipelines, you will focus on relevant theoretical and empirical research required to understand which data makes models perform best on our targeted capabilities.
This role is for you if you have a strong background in large-scale language modeling and the scientific drive to answer complex questions about data scaling laws, synthetic data generation, and curriculum learning.
In your day-to-day, you will design targeted ablations across various scales, derive","datePosted":"2026-04-21","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/0628691f-7d3e-416d-9358-3b55859e1bbb","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}},{"@context":"https://schema.org","@type":"JobPosting","title":"Senior AI Researcher- Reinforcement learning (f/m/d)","description":"
Our Mission
Aleph Alpha is one of the few companies in Europe with end-to-end in-house model development including pre- and post-training. We’re building models that have general-purpose capabilities, but also specifically excel at addressing the needs of our customers.
We're growing our post-training team in Heidelberg (or hybrid in Germany) and are looking for an AI Researcher who combines a deep theoretical understanding of reinforcement learning methods with a desire to improve on the state of the art and improve model capabilities in large-scale training.
Team Culture
At Aleph Alpha, we foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organizational structure with efficient, supportive management that enables quick decision‑making, open communication, and a strong sense of shared purpose.
About the role
As a (senior) AI Researcher for reinforcement learning you will shape and improve the underlying RL methodology, maintain a high-quality training code-base, and conduct large-scale experiments to hill-climb our performance benchmarks. This role is for you if you both have a strong theoretical background on RL and the engineering drive to bring these methods into production and improve on the methods as part of the reinforcement learning team.
In your day-to-day you will conduct large-scale reinforcement learning experiments, derive hypotheses from the results, and iterate on both the implementation and methodology based on the observations. Together with a collaborative team, you will have direct impact on the models that w","datePosted":"2026-03-03","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/ed326a0a-1cab-425a-b9c1-ae617d6d1cce","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}},{"@context":"https://schema.org","@type":"JobPosting","title":"Senior Performance Engineer- Pretraining (f/m/d)","description":"
Our Mission
Aleph Alpha is one of the few companies in Europe doing serious foundation model pre-training. Our customers - in finance, manufacturing, public administration - need models that understand German, meet European regulatory requirements, and work reliably in high-stakes settings. We're building that in Heidelberg.
We are hiring a Performance Engineer to grow our pre-training efficiency team. If you are excited about making models fast, this is the role for you!
Team Culture
At Aleph Alpha, we foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organizational structure with efficient, supportive management that enables quick decision‑making, open communication, and a strong sense of shared purpose.
About the role:
You will engineer the systems required to train foundation models at scale. Your objective is to maximize hardware utilization and training throughput on our large-scale GPU clusters (thousands of NVIDIA Blackwell GPUs). You will work at the intersection of deep learning frameworks, distributed systems, and GPU microarchitecture, eliminating bottlenecks from the Python layer down to the GPU kernel.
This role is for Aleph Alpha Research GmbH.
Your responsibilities:
- End-to-End Optimization: Profile training loops using PyTorch Profiler, Nsight Systems and Nsight Compute to identify system- and kernel-level bottlenecks in order to maximize model throughput.
- Distributed Strategy and Topology:","datePosted":"2026-02-26","employmentType":"FULL_TIME","hiringOrganization":{"@type":"Organization","name":"Aleph Alpha"},"url":"https://jobs.ashbyhq.com/AlephAlpha/2faca6ec-69bd-4e04-b055-05f24ddf0f4d","jobLocationType":"TELECOMMUTE","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Heidelberg"}}}]

Our Mission

Team Culture

About the Role

Our Mission

Team culture

About the Role

Our Mission

Our Mission

About the role

Our Mission

About the role:

Aleph Alpha

Open roles7