TensorFlow Jobs in Czech Republic.
All active TensorFlow roles based in Czech Republic.
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Senior HPC Cluster Engineer
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Why work at Nebius
Nebius is leading a new era in cloud computing to serve the global AI economy. We create the tools and resources our customers need to solve real-world challenges and transform industries, without massive infrastructure costs or the need to build large in-house AI/ML teams. Our employees work at the cutting edge of AI cloud infrastructure alongside some of the most experienced and innovative leaders and engineers in the field.
Where we work
Headquartered in Amsterdam and listed on Nasdaq, Nebius has a global footprint with R&D hubs across Europe, North America, and Israel. The team of over 1400 employees includes more than 400 highly skilled engineers with deep expertise across hardware and software engineering, as well as an in-house AI R&D team.
The role
We’re looking for a Senior HPC Cluster Engineer to join our team and play a key role in the development of our cutting-edge hyperscaler platform. The GPU & InfiniBand team is responsible for enhancing and optimizing the core components of our Cloud platform, with a specific focus on GPU computing, InfiniBand networks, and the KVM/QEMU stack. You’ll work closely with hardware virtualization and device emulation technologies, ensuring high performance and security in multi-GPU, HPC environments. The role involves analyzing, troubleshooting, and improving infrastructure to support new hardware, fine-tuning system performance, and automating fault detection and resolution in a complex system.
In this position, you will be responsible for:
- Tuning the performance of GPU clusters and InfiniBand networks to ensure optimal operation in HPC and GPU-based environments.
- Analyzing and troubleshooting the root cause of issues related to GPUs and InfiniBand networks, and proposing corrective actions.
- Integrating new hardware into the existing infrastructure, including support for new GPU hardware through software stacks like Kubernetes, QEMU, and KVM.
- Enhancing automation systems for proactive monitoring, detecting, and resolving issues in GPU and InfiniBand environments.
- Configuring and managing GPU devices and InfiniBand fabrics, ensuring efficient and reliable operation.
We expect you to have:
- 5+ years of professional experience in system-level software development (focused on performance optimization, low-level programming).
- 3+ years of hands-on experience with Linux systems (administration, troubleshooting, and performance tuning).
- In-depth understanding of server architecture, including PCIe devices, NICs, Linux OS/Kernel, and high-performance computing (HPC) systems.
- Strong proficiency in one or more performance-oriented programming languages (C/C++, Go, Python).
It would be a plus if you have:
- Experience with GPU end-to-end testing in a cluster environment using InfiniBand networking.
- Proven track record of analyzing and optimizing the performance of HPC workloads (e.g., simulations, data analysis, AI/ML workloads).
- Familiarity with RDMA, RoCE, and InfiniBand protocols for high-performance communication.
- Background in Software-Defined Networking (SDN) and experience with HPC cluster networking.
- Understanding of QEMU/KVM virtualization and managing virtualized environments.
- Experience with deep learning frameworks such as PyTorch and TensorFlow, and their integration with HPC systems.
- Familiarity with collective communication libraries like MPI and NCCL for distributed computing.
We conduct coding interviews as part of the process.
What we offer:
- Competitive salary and comprehensive benefits package.
- Opportunities for professional growth within Nebius.
- Flexible working arrangements.
- A dynamic and collaborative work environment that values initiative and innovation.
We’re growing and expanding our products every day. If you’re up to the challenge and are excited about AI and ML as much as we are, join us!
Equal Opportunity Statement:
Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.
Applicants must be authorized to work in the country in which they apply, and will be required to provide proof of employment eligibility as a condition of hire.
Ready to apply?
Apply to Nebius
Senior Machine Learning Engineer / Data Scientist
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- We're taking autonomous search mainstream, making product discovery more intuitive and conversational for customers, and more profitable for businesses.
- We’re making conversational shopping a reality, connecting every shopper with tailored guidance and product expertise — available on demand, at every touchpoint in their journey.
- We're designing the future of autonomous marketing, taking the work out of workflows, and reclaiming the creative, strategic, and customer-first work marketers were always meant to do.
Bloomreach is seeking a seasoned Senior Machine Learning Engineer to own the design and implementation of cutting-edge AI and GenAI driven algorithmic components for contextual personalization, predictions and behavioral insights that are used to personalize digital experiences for our customers. We are currently allowing flexibility for our employees to work from anywhere for the respective region (Central & Eastern Europe) or we are happy to meet you in our offices in Bratislava (Slovakia) or Brno, Prague (Czechia) on a full-time basis. The salary starts at €4,800 gross per month, along with restricted stock units and other benefits.
Your Responsibilities:
- Design, develop, and enhance ML/AI models which Predictions, Contextual Personalization and our new agentic workflows
- Process historical data, product catalog and user behaviours to extract hidden relations and features.
- Conduct research to explore ongoing cutting-edge ML techniques and conduct a quick POC.
- Work closely with ML Engineers to integrate and scale ML components to a production-level that can handle terabytes of data.
- Continuously learn and stay up to date with the current state-of-the-art techniques by reading research papers and attending AI/ML conferences.
Qualifications:
- BS/MS degree in Computer Science or a related discipline with a strong mathematical foundation and excellent programming skills (primarily Python)
- At least 3 years of experience building ML-driven fast and scalable ML/analytical algorithms in a corporate/startup environment.
- Strong awareness and understanding of recent trends in Generative AI and LLMs. Experience in working with GenAI stack will be treated as strong credentials.
- Strong understanding of various machine learning and natural language processing technologies, such as classification, information retrieval, clustering, knowledge graph, semi-supervised learning and ranking.
- Excellent exploratory data analysis skills with the ability to slice and dice data at scale using SQL in BigQuery.
- Good problem solving and analytical skills. Ability to learn and adapt to newer ML technologies.
- Exposure to deep learning stack (PyTorch/Keras/TensorFlow) and techniques (Representation/Transfer Learning, RNN/LSTM, Transformers).
- Experience working with Big Data in a cloud based production environment (AWS/GCP/Azure).
- Effective communication skills in English, both verbally and in written form.
#LI-KP1
More things you'll like about Bloomreach:
Culture:
-
A great deal of freedom and trust. At Bloomreach we don’t clock in and out, and we have neither corporate rules nor long approval processes. This freedom goes hand in hand with responsibility. We are interested in results from day one.
-
We have defined our 5 values and the 10 underlying key behaviors that we strongly believe in. We can only succeed if everyone lives these behaviors day to day. We've embedded them in our processes like recruitment, onboarding, feedback, personal development, performance review and internal communication.
-
We believe in flexible working hours to accommodate your working style.
-
We work virtual-first with several Bloomreach Hubs available across three continents.
-
We organize company events to experience the global spirit of the company and get excited about what's ahead.
-
We encourage and support our employees to engage in volunteering activities - every Bloomreacher can take 5 paid days off to volunteer*.
-
The Bloomreach Glassdoor page elaborates on our stellar 4.4/5 rating. The Bloomreach Comparably page Culture score is even higher at 4.9/5
Personal Development:
-
We have a People Development Program -- participating in personal development workshops on various topics run by experts from inside the company. We are continuously developing & updating competency maps for select functions.
-
Our resident communication coach Ivo Večeřa is available to help navigate work-related communications & decision-making challenges.*
-
Our managers are strongly encouraged to participate in the Leader Development Program to develop in the areas we consider essential for any leader. The program includes regular comprehensive feedback, consultations with a coach and follow-up check-ins.
-
Bloomreachers utilize the $1,500 professional education budget on an annual basis to purchase education products (books, courses, certifications, etc.)*
Well-being:
-
The Employee Assistance Program -- with counselors -- is available for non-work-related challenges.*
-
Subscription to Calm - sleep and meditation app.*
-
We organize ‘DisConnect’ days where Bloomreachers globally enjoy one additional day off each quarter, allowing us to unwind together and focus on activities away from the screen with our loved ones.
-
We facilitate sports, yoga, and meditation opportunities for each other.
-
Extended parental leave up to 26 calendar weeks for Primary Caregivers.*
Compensation:
-
Restricted Stock Units or Stock Options are granted depending on a team member’s role, seniority, and location.*
-
Everyone gets to participate in the company's success through the company performance bonus.*
-
We offer an employee referral bonus of up to $3,000 paid out immediately after the new hire starts.
-
We reward & celebrate work anniversaries -- Bloomversaries!*
(*Subject to employment type. Interns are exempt from marked benefits, usually for the first 6 months.)
Excited? Join us and transform the future of commerce experiences!
If this position doesn't suit you, but you know someone who might be a great fit, share it - we will be very grateful!
Any unsolicited resumes/candidate profiles submitted through our website or to personal email accounts of employees of Bloomreach are considered property of Bloomreach and are not subject to payment of agency fees.
#LI-Remote
Ready to apply?
Apply to Bloomreach
Senior Machine Learning Engineer / Data Scientist
Share this job
- We're taking autonomous search mainstream, making product discovery more intuitive and conversational for customers, and more profitable for businesses.
- We’re making conversational shopping a reality, connecting every shopper with tailored guidance and product expertise — available on demand, at every touchpoint in their journey.
- We're designing the future of autonomous marketing, taking the work out of workflows, and reclaiming the creative, strategic, and customer-first work marketers were always meant to do.
Bloomreach is seeking a seasoned Senior Machine Learning Engineer to own the design and implementation of cutting-edge AI and GenAI driven algorithmic components for contextual personalization, predictions and behavioral insights that are used to personalize digital experiences for our customers. We are currently allowing flexibility for our employees to work from anywhere for the respective region (Central & Eastern Europe) or we are happy to meet you in our offices in Bratislava (Slovakia) or Brno, Prague (Czechia) on a full-time basis.
Your Responsibilities:
- Design, develop, and enhance ML/AI models which Predictions, Contextual Personalization and our new agentic workflows
- Process historical data, product catalog and user behaviours to extract hidden relations and features.
- Conduct research to explore ongoing cutting-edge ML techniques and conduct a quick POC.
- Work closely with ML Engineers to integrate and scale ML components to a production-level that can handle terabytes of data.
- Continuously learn and stay up to date with the current state-of-the-art techniques by reading research papers and attending AI/ML conferences.
Qualifications:
- BS/MS degree in Computer Science or a related discipline with a strong mathematical foundation and excellent programming skills (primarily Python)
- At least 3 years of experience building ML-driven fast and scalable ML/analytical algorithms in a corporate/startup environment.
- Strong awareness and understanding of recent trends in Generative AI and LLMs. Experience in working with GenAI stack will be treated as strong credentials.
- Strong understanding of various machine learning and natural language processing technologies, such as classification, information retrieval, clustering, knowledge graph, semi-supervised learning and ranking.
- Excellent exploratory data analysis skills with the ability to slice and dice data at scale using SQL in BigQuery.
- Good problem solving and analytical skills. Ability to learn and adapt to newer ML technologies.
- Exposure to deep learning stack (PyTorch/Keras/TensorFlow) and techniques (Representation/Transfer Learning, RNN/LSTM, Transformers).
- Experience working with Big Data in a cloud based production environment (AWS/GCP/Azure).
- Effective communication skills in English, both verbally and in written form.
#LI-KP1
More things you'll like about Bloomreach:
Culture:
-
A great deal of freedom and trust. At Bloomreach we don’t clock in and out, and we have neither corporate rules nor long approval processes. This freedom goes hand in hand with responsibility. We are interested in results from day one.
-
We have defined our 5 values and the 10 underlying key behaviors that we strongly believe in. We can only succeed if everyone lives these behaviors day to day. We've embedded them in our processes like recruitment, onboarding, feedback, personal development, performance review and internal communication.
-
We believe in flexible working hours to accommodate your working style.
-
We work virtual-first with several Bloomreach Hubs available across three continents.
-
We organize company events to experience the global spirit of the company and get excited about what's ahead.
-
We encourage and support our employees to engage in volunteering activities - every Bloomreacher can take 5 paid days off to volunteer*.
-
The Bloomreach Glassdoor page elaborates on our stellar 4.4/5 rating. The Bloomreach Comparably page Culture score is even higher at 4.9/5
Personal Development:
-
We have a People Development Program -- participating in personal development workshops on various topics run by experts from inside the company. We are continuously developing & updating competency maps for select functions.
-
Our resident communication coach Ivo Večeřa is available to help navigate work-related communications & decision-making challenges.*
-
Our managers are strongly encouraged to participate in the Leader Development Program to develop in the areas we consider essential for any leader. The program includes regular comprehensive feedback, consultations with a coach and follow-up check-ins.
-
Bloomreachers utilize the $1,500 professional education budget on an annual basis to purchase education products (books, courses, certifications, etc.)*
Well-being:
-
The Employee Assistance Program -- with counselors -- is available for non-work-related challenges.*
-
Subscription to Calm - sleep and meditation app.*
-
We organize ‘DisConnect’ days where Bloomreachers globally enjoy one additional day off each quarter, allowing us to unwind together and focus on activities away from the screen with our loved ones.
-
We facilitate sports, yoga, and meditation opportunities for each other.
-
Extended parental leave up to 26 calendar weeks for Primary Caregivers.*
Compensation:
-
Restricted Stock Units or Stock Options are granted depending on a team member’s role, seniority, and location.*
-
Everyone gets to participate in the company's success through the company performance bonus.*
-
We offer an employee referral bonus of up to $3,000 paid out immediately after the new hire starts.
-
We reward & celebrate work anniversaries -- Bloomversaries!*
(*Subject to employment type. Interns are exempt from marked benefits, usually for the first 6 months.)
Excited? Join us and transform the future of commerce experiences!
If this position doesn't suit you, but you know someone who might be a great fit, share it - we will be very grateful!
Any unsolicited resumes/candidate profiles submitted through our website or to personal email accounts of employees of Bloomreach are considered property of Bloomreach and are not subject to payment of agency fees.
#LI-Remote
Ready to apply?
Apply to Bloomreach