All offersWrocławPythonPython Engineer with ML (Senior)
Python Engineer with ML (Senior)

Python Engineer with ML (Senior)

Type of work
Employment Type
Operating mode


Join #VLteam! We have extensive knowledge about Data Engineering & Data Science, Cloud-Native Services, Reactive Systems, Dev Tooling and Frontend. We are also worldwide experts in Scala language, officially supporting its development and tooling.

Company profile

Tech stack

    nice to have

Job description

Online interview
Friendly offer

We are #VLteam – tech enthusiasts constantly striving for growth. The team is our foundation, that’s why we care the most about the friendly atmosphere, a lot of self-development opportunities and good working conditions. Trust and autonomy are two essential qualities that drive our performance. We simply believe in the idea of ​​“measuring outcomes, not hours”. Join us & see for yourself!

About the role

Join us to drive business innovation with production-grade ML pipelines. Become a key member of our team as you dive into Big Data, utilise Azure for cloud computing, and deploy solutions on edge devices. Collaborate with Data Scientists on impactful AI-powered projects.

Our projects are the tip of the iceberg – expect a landscape of more intriguing and diverse challenges ahead.

One of the available projects: T-Rex

Project Scope

In collaboration with a prominent UK-based retailer's data science team, we create solutions for personalisation challenges, such as web-page product recommendations. The main objective is to deliver well-engineered components that enable work on modelling and experimentation in a hybrid-cloud environment. The ultimate goal is to provide an end-to-end experience stretching from pure data, training different models, and creating APIs to deliver self-improving models.


- Work on components to support Big Data processing on an on-prem Hadoop cluster.

- Ensure that high-quality code is delivered.

- Choose the best architecture and tools for the business requirement.

- Push the data to the cloud and select the best way to store and process it.

- Build robust code and architecture to allow easy productisation of data scientists' models with minimal time and effort.

- Enhance monitoring capabilities and reliability.

Tech Stack

Python: (3.7+) with complete typing PySpark: base for our ETL Azure (incl. Azure ML): model training and serving Tensorflow, pandas, scikit-learn, scipy, nltk Jenkins, Azure DevOps, Terraform, Git @ GitHub

Project Challenges

Personalisation models use tens of terabytes of input data. We leverage the Hadoop on-prem cluster to extract significant business features and transfer them to the cloud. We adopted the hybrid-cloud model to iterate faster on the business use cases given to us by data scientists.


The team consists of a Technical Lead and 3-4 Engineers in Poland. These people collaborate closely with the client's UK-based Data Science Unit.

For more projects, check out our website.

What we expect in general

  • Hands-on experience with productionisation of ML pipelines
  • Strong experience with writing framework-grade Python code
  • Experience with Spark, Ray, or big data cloud engines
  • Knowledge about Azure and AzureML or other cloud-based solutions for ML
  • Knowledge about CI/CD and a good understanding of the lifecycle of an ML product
  • Ability to dive into the Kubernetes ecosystem as a user
  • Ability to discuss requirements and readiness to challenge the status quo
  • Good command of English (B2 / C1)
  • Availability to work in Kraków twice a year, with costs covered by us

Don’t worry if you don’t meet all the requirements. What matters most is your passion and willingness to develop. Moreover, B2B does not have to be the only form of cooperation. Apply and find out!

What's on offer?

  • Flexible hybrid work model - you decide where & when to start the work. You can work remotely or join us in one of our modern offices (Krakow, Kielce, Wroclaw), always located in the city centres. Just choose what suits you best! 
  • Language lessons - we refund up to 500 PLN (per quarter) for learning all languages you would like to take! What’s more, we refund up to 1,000 PLN (per quarter) for learning the English language.
  • Virtusity – our training division - we value the personal growth of our #VLteam. That’s why we have a rich offer of internal courses, workshops, etc. (technical, as well as soft skills training) conducted by our employees. 
  • Training Package - use our training budget and 24 paid work hours for your development. You can choose the training from our Virtusity portfolio or external conferences, courses, workshops, etc. 
  • Home office reimbursement - you can rent all the necessary equipment from our offices, but you can also get up to 800 PLN financial support to set up your WFH.
  • Multisport card or MyBenefit points - do you like sports and want free unlimited admission to sports facilities in your city? Or maybe you prefer the cinema, SPA in the mountains, delicious dinner, or Allegro shopping? At VirtusLab, you decide whether you choose a sports card or vouchers for countless attractions. 
  • Private healthcare - our insurer's offer allows you to have free health advice, treatments, diagnostic tests, etc., in more than 1,500 clinics operating all over the country.
  • Stretching - feeling tense or tired? Take a break from work and join our online stretching sessions.
  • Building tech community - we run 9 meetup groups in Kraków, Kielce, and Rzeszów and support many other local initiatives. We also contribute to numerous open-source projects (world-famous solutions and create our own ones). Check out also - our unique platform with tech videos and online events.