Senior Python&Java Developer with Apache Spark
ID: 7941
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Specialization Java Developer, Python Developer
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Experience Senior
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Location Warszawa
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Working mode Hybrid
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Salary B2B: 1 000 – 1 200 PLN/day

Salary: 1000-1300 PLN/day on B2B
Work model: hybrid from Gdynia / Gdańsk / Warszawa (3 days per week from the office)
Why choose this offer?
- You can expect a flexible work organization
- The international work environment will give you the opportunity to interact with the English language on a daily basis
- Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)
- The Jit community will bring you a nice time during regular integration meetings
Project
Responsibilities you’ll have
- Design, implement, and optimise data pipelines to support end-to-end capital-markets AML detection scenarios
- Implement detection logic, rule frameworks, and scoring components to support financial-crime use cases
- Ensure high-quality engineering across code, data pipelines, and operational processes
- Contribute to a greenfield architecture with a strong sense of ownership, innovation, and delivery excellence
Expected competences and knowledge
- Strong programming skills in Python and Java
- Advanced experience with Apache Spark (PySpark), SQL for large-scale distributed data processing
- Hands-on experience in distributed compute platforms and on-premise cluster environments
- Proficiency with CI/CD tools such as Bamboo/Jenkins, and Bitbucket
- Experience working in Agile teams, with the ability to work independently in fast-paced, evolving environments
- Strong analytical and problem-solving skills with the ability to adapt quickly
Nice to have
- Understanding of Capital Markets products including FX, Equities, Derivatives, and Bonds etc
- Previous experience in Financial Crime, AML, or surveillance use cases
- Experience implementing rule-based detection systems, scorecards, or alerting frameworks
- Experience delivering against NFRs such as performance, scalability, observability, data quality, resiliency, and security
- Experience with automation, including automated pipeline deployment, data validation, testing frameworks, and workflow orchestration
- Experience in integrating the solutions with the third party systems (like case management systems)
- A strong “can-do” attitude and the ability to collaborate effectively in a cross-functional team
Technologies you’ll work with
- Python
- Java
- Apache Spark (PySpark)
- SQL
- Bamboo, Jenkins, Bitbucket
- CI/CD
- Agile
Client – why choose this particular client from the Jit portfolio?
Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client’s premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer’s work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.
About Jit Team
The Human Factor of IT – it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.
Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.
Here’s how we get from first “hello”
to “welcome aboard”
You’ll meet with our HR team to discuss your experience, approach to software development, and teamwork. We’ll also verify your English language proficiency as part of the conversation. Then, you’ll take part in a technical interview focused on your skills and problem-solving mindset.
If both interviews go well, we’ll match you with a project aligned with your skills and expectations. You’ll then meet the client – this is where the final project-related decision is made.
Based on feedback and your preferences, we’ll prepare an offer tailored to your experience. We’ll agree on the project, salary, type of contract, and your start date.
We start with a short phone conversation to get to know each other. We’ll talk about your experience, career goals, and motivation, while giving you a chance to learn more about Jit Team and the role.
Depending on the role, you’ll complete a short recruitment task to showcase your skills. We’ll also verify your English language proficiency as part of this stage.
Next, you’ll meet your future Team Leader at our office. We’ll discuss your experience, ways of working, and how your skills match the role, while giving you a better understanding of the team and day-to-day collaboration.
If we’re a good match, we’ll prepare an offer tailored to your experience. We’ll agree on the salary, type of contract, and your start date. Welcome to Jit Team!
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