7N Sp. z o.o.

7N Sp. z o.o.

Spark Developer

Offer parameters
home office work
Gdańsk, Pomeranian (Poland)

Technologies we use


Apache Spark



About the project

Currently we are looking for Spark Developers who will join an Agile team working on projects from banking industry.
On this position, you will work closely together with business Product Owners, business stakeholders and other Developers to understand and analyse business needs from which you will design and implement end-to-end solution architecture for data & analytics platforms.
You’ll join Databases and Reporting Department, where the team is delivering the future Data & Analytics platforms and solutions. They are delivered on multiple data platforms (Oracle and Hadoop) as well as on many enterprise and self-service data integration and analytical platforms.
Possibility of 100% remote work with onboarding in Warsaw or Tricity office.

Your responsibilities

  • End-to-end data & analytics solution design and implementation
  • Developing jobs for Trading Data Warehouse, using Spark, Python and Java/Scala
  • Developing data ingestion, data loading, data transformation processes
  • Developing SQL scripts to analyse and validate various data products
  • Data Streaming/data integration: Spark, Kafka, Hadoop, Oracle
  • Actively cooperating with Product Owner, Solution Architects, Analysts, Testers, Developers and Operations
  • Working in DevOps Agile Team

Our requirements

  • Min. 4 years of experience on a similar position
  • Experience with Spark, Hadoop and distributed systems
  • Developer experience in Java and/or Scala, Python & SQL
  • Software engineering skills in CI/CD, TDD, Unit Testing and E2E Testing


  • Experience with streaming platforms, e.g. Kafka
  • Knowledge and experience with data warehouses, business intelligence (BI) & analytics
  • Experience working with business stakeholders and distributed global teams
  • Experience with Trading/Capital Markets area
  • Experience working with Docker, and knowledge of Kubernetes

What we offer

  • Financial transparency: the salary is: 30 240 – 36 960 PLN (180 – 220 PLN/h) + VAT
  • Clear wage model.
  • Professional development support. We subsidize trainings, technical certificates, conference participation, and foreign language classes. Additionally, 7N Consultants have opportunities to take part in internal training sessions and develop their interpersonal skills within the framework of the 7N Secret Code. Learn more about it here: 7N – The Secret Code (https://www.7n.com/media/4375/7n-the-secret-code.pdf)
  • 7N Inspiration Team’s support and an opportunity to join their ranks. They are a group of 7N Consultants who consistently and actively share their professional knowledge and expertise. Read an article from one of the 7N Inspiration Team’s members here: 7N - From Gitlab CI to Azure App Service (https://www.7n.com/news/4525)
  • Cooperation with real experts – the average professional experience of a 7N consultant is 10 years. Check out one of our discussion panels here: Does a Scrum Master need a background in programming (in Polish) (https://www.youtube.com/watch?v=rhnIS3EKaPY)
  • Comprehensive and personal project support from one of a 7N Agent. Priority regarding project continuity and quality. See what one 7N Consultant said about the role of 7N Agents and project opportunities.
  • Numerous (10-12 each year) high-end events – both online and offline. See the 7N KickOff 2019 clip here: https://www.youtube.com/watch?v=i5KjJpFBNpI
  • Healthcare, Benefit Multisport and life insurance subsidies regardless of cooperation model. Access to Mindgram, a psychological support and professional development platform.
  • Professional and quality-oriented recruitment process led by the most experienced recruiters in the industry.

Recruitment stages

  • 1.
    phone conversation with our recruiter (about 15 minutes)
  • 2.
    meeting with the recruiter (1h)
  • 3.
    meeting with the client

7N Sp. z o.o.

7N is an agent for high-end IT professionals. For over 30 years of operation we have proven that a clear and transparent financial model, collaboration exclusively with experts in their respective fields, and taking good care of them, comprise the best possible IT consulting model. We act as an individual agent for our consultants and promote their competences to our clients by offering them a wide range of projects in which they may participate. We add wage transparency, career development support and professional stability. Our main goal is a long-term collaboration; therefore the majority of our staff have been with us for many years.
I apply to:
7N Sp. z o.o.
7N Sp. z o.o.
Gdańsk, Pomeranian (Poland)
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