Senior Java Developer (Kafka)

  • Full time
  • Prague
  • Posted 3 weeks ago


AWS (nice to have)
DDD (regular)
MongoDB (regular)
English (advanced)
Kafka (advanced)
Java (advanced)
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.

About project

Currently we are looking for Senior Java Developers with Kafka who will join an Agile team working on project from logistics industry
The project is related to further development of system for tracking containers.
You will join a team of 7-8 people working in Scrum.
Possibility of remote work (although some business trips to Gdansk office may be required).

  • Implementation of Java Applications running on Websphere Application Server (using Domain Driven Design)
  • Requirement Analysis with Stakeholders
  • Implementation of next software version of the Container Tracking System (Event Driven Architecture based on Kafka)
  • Implementation of Kafka Consumer, Scaling of Topic Consumer
  • Implementation of RESTful APIs 
  • Integration of external RESTful APIs
  • Migration of Legacy Applications to Java Platform

  • Min. 5 years of experience on Java Developer position
  • Experience with Kafka
  • Experience with MongoDB or other NoSQL Databases
  • English on an advanced level (written and spoken)
  • Understanding of Continuous Integration/Continuous Delivery
  • Understanding of Domain Driven Design
  • Practical experience in Agile software development
Nice to have
  • Experience with Cloud Development (AWS)
  • Experience working in international logistics context
We offer

  • Financial transparency: the salary is: 25 200 – 30 240 PLN (150 – 180 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   
  • 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     
  • 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) 
  • 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 2021 clip here:
  • 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.Read more about it in the <a href="https://

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