Senior Java Engineer

Senior Java Engineer

WINGED IT SP Z O O

Offer parameters

salary not specified

contract of employment (full-time)

170195

net (+ VAT) / hr.

B2B contract

hybrid work
senior
valid for 27 days
(from 20 Apr)
Набір відкритий для українців
Recruitment open to Ukrainians
Warszawa, Masovian

Technologies we use

Expected

Java
Spring Boot
Spring Framework
Hibernate
Docker
Jenkins
GitLab
SQL
JUnit
Mockito
AWS

Optional

Spring Security
PostgreSQL
Terraform
Prometheus
Datadog
Kafka
RabbitMQ
GraphQL

About the project

Do you want to play a key role in revolutionizing the future of finance? Join Klarna - a global leader in deferred payments, with over 85 million active users and 2.5 million transactions processed daily! As a pioneer in modern payment solutions, Klarna is developing innovative methods that streamline the shopping experience, enhance transaction security, and expand the availability of purchasing options.
We're seeking individuals eager to achieve remarkable results and share their bold vision to redefine the future of payments and fintech. Send us your CV - we can’t wait to meet you!
Our client: Klarna
Location: Warsaw (hybrid work: 2-3 days in the office)
Duration: long-term agreement
Technology stack: Java (latest versions), Spring, Spring Boot, Docker, Kubernetes, Kafka, PostgreSQL, DynamoDB, Elasticsearch, Microservices architecture on AWS

Your responsibilities

  • To work within a key problem space, addressing the client's immediate needs by designing, developing, and deploying backend services that prioritize scalability, high availability, and low latency;
  • To collaborate and grow in a dynamic and autonomous environment while working in small, agile and cross functional teams;
  • To use the latest technologies to solve real problems for customers at a massive scale;
  • To be part of a team that will take full operational responsibility for the services that you own, and potentially take part in an on-call rotation;
  • To share your knowledge and build creative solutions while helping the team evolve best practices.

Our requirements

  • At least 6 years of experience with Java (version 17 and up);
  • Framework knowledge: Spring Framework (Spring Boot, Spring MVC), Hibernate or JPA;
  • Tools: Docker and CI/CD tools (e.g., Jenkins, GitLab);
  • Databases: Strong SQL skills with hands-on experience in relational databases;
  • Testing: Proficiency in unit testing (JUnit, Mockito) and integration testing tools;
  • Cloud & DevOps: AWS cloud infrastructure and microservices architecture;
  • System Design: Solid experience with microservices architecture, scalability, and system integration;
  • Strong educational background in Computer Science, Information Technology, or a related field;
  • Language proficiency: Advanced English (minimum B2 level).

    Optional

  • Others Java frameworks and Spring Security;
  • Kubernetes and CI/CD best practices;
  • NoSQL databases, PostgreSQL, and database performance tuning;
  • Performance testing and automation frameworks experience;
  • DevOps tools (Terraform, CDK) and monitoring tools (Prometheus, Datadog);
  • Understanding of distributed systems, event-driven architecture (Kafka, RabbitMQ);
  • Awareness of security best practices, API design (RESTful, GraphQL), and container orchestration tools.

This is how we organize our work

This is how we work

at the client's siteagile

This is how we work on a project

  • Clean Code
  • Continuous Deployment
  • Continuous Integration
  • DevOps
  • active monitoring
  • documentation
  • issue tracking tools
  • integration tests
  • unit tests
Company

Development opportunities we offer

  • substantive support from technological leaders
  • technical knowledge exchange within the company
  • time for development of your ideas

What we offer

  • Great opportunity for personal development in a stable and friendly large multinational company;
  • Start-up mentality, small agile teams;
  • Global Reach: Impact millions with seamless shopping and payments;
  • Career growth and additional education.

Recruitment stages

  • 1.
    1 timed Abstract and Logical Reasoning Test (up to 15 mins)
  • 2.
    1 short interview (up to 30 minutes)

WINGED IT SP Z O O

Winged IT is a Polish Tech Recruitment, Outstaffing, and Consulting Company with over 100 clients from 4 continents.
We deliver Tech Talents from Central and Eastern Europe, ready to work remotely from Poland or relocate to other countries.
We effectively support international companies in establishing their remote (in-house or oustaffed) engineering teams in Poland – to learn why to choose Poland, please visit our dedicated website https://doITinPoland.com/.

This is how we work

I apply to:
WINGED IT SP Z O O
Warszawa, Masovian
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