Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊

We are looking for a Machine Learning Software Engineer. In this role, you will contribute to the development and evolution of our internal ML tooling, helping transform early‑stage prototype workflows into scalable, compliant production solutions.

You will work on creating new tools and enhancing existing ones, adding functionality, resolving issues, increasing test coverage, and improving documentation. A key part of your responsibilities will also include ensuring that both the processes and the developed tooling meet all required compliance standards.

We offer a choice of employment form: B2B or Employment Contract

• UoP: 15 000 – 18 000 PLN gross/month
• B2B: 130 – 150 PLN net/hour + VAT

You might be the perfect match if you are/have:

• Experience in building and applying ML systems (not limited to hosted LLMs) using frameworks such as PyTorch, TensorFlow, or JAX.
• Experience in developing training data processing pipelines for image data; comparable experience with other complex data types (e.g., proteomics) will also be considered.
• Practical understanding of the MLOps lifecycle, including model training, validation, deployment, and quality monitoring.
• Excellent proficiency in Python.
• Strong software engineering skills, including writing high‑performance, modern, and reliable code, supported by proper documentation, unit tests, and code quality best practices.

Moreover, we appreciate skills in these areas:

• Experience with TypeScript, Node.js, or JavaScript.
• Familiarity with experiment‑tracking platforms such as Weights & Biases or MLflow.
• Exposure to processing platforms such as Kubeflow.
• Background in computer vision, including experience with tools like OpenCV.
• Knowledge of cloud computing infrastructure, particularly AWS.
• Experience working in regulated environments and developing software under predefined regulatory requirements.

By joining us, you gain the following:

• Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT;
• Possibility to develop in cloud technologies;
• Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen;
• Respect for your private life so you don't have to work overtime or on weekends;
• Team Events budget to socialize outside of work;
• Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona).

Perks and benefits:

• Fully remote work or in our office in Wrocław;
• Benefits such as Luxmed, Multisport, and life insurance in Nationale Nederlanden;
• Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior);
• Personal Training Budget with additional paid hours;
• Passion Day - an extra day off for your hobby to spend as you please;
• Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you;
• We provide high-quality work equipment + 2 additional monitors and accessories.

If you apply for this position and match our expectations, then:

• You will be invited for an HR screening to get to know your experience, expectations, and motivation;
• You will complete a coding test (HackerRank) to demonstrate your technical skills;
• You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth;
• You will meet the team members to learn more about the project and see how we collaborate on a daily basis.