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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on delivering enterprise-class AI platforms to international clients. Key technologies include ML and LLM, C++, CUDA, Python with a focus on optimizing and scaling distributed ML systems. Responsibilities cover scaling multi-node ML/LLM, performance optimization, designing distributed systems, and bottleneck analysis. The offer includes a benefits package, investment in growth, and class A working environment.
from: 25 June 2026
to: 25 July 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:senior
working mode:remote • hybrid • full office
Białystok, Centrum
Requirements
Expected technologies
Python
C++
CUDA
Distributed ML Systems
Optional technologies
Triton
Kubernetes
Our requirements
- Minimum 5 years of experience with LLM models and Machine Learning workloads
- Strong experience with machine learning in production environments
- Hands-on work with large-scale distributed ML systems
- Low-level optimization skills in C++, CUDA, or similar technologies
- Proven ability to analyze and improve ML system performance
- Solid Python skills with an understanding of system-level performance
- Very good English skills, both spoken and written
Your responsibilities
- Scaling ML and LLM models across multi-node, multi-accelerator clusters
- Optimizing latency, throughput, and resource efficiency of ML workloads
- Designing and operating distributed training and inference systems
- Benchmarking and profiling AI workloads on real hardware platforms
- Identifying and resolving system-level performance bottlenecks
About the project
Join Sii and play a key role in delivering enterprise-class AI platforms to international clients. As a Senior Machine Learning / LLM Systems Engineer, you will be responsible for scaling and optimizing large-scale ML and LLM systems. You will collaborate with cross-functional teams and support strategic AI and infrastructure initiatives across the organization.
What we offer
- Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
- Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
- We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
- Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
- Comfortable workplace – class A offices or remote work
- Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
- PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
- Investment in your growth – meetups, webinars, training platform and technology blog – you choose
- Fantastic atmosphere created by all Sii Power People
Recruitment stages
- 1.Send your CV
- 2.Talk to us about your expectations
- 3.Learn more about our projects and choose the best
- 4.Start your adventure with Sii!
Sii Sp. z o.o.
Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.
This is how we work
Senior Machine Learning - LLM Systems Engineer (f/m/x)
I apply to:
Sii Sp. z o.o.
Białystok, Centrum
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