Nexi Group

Junior Backend Developer

Nexi Group

full-time

Posted on:

Location Type: Hybrid

Location: Köln • 🇩🇪 Germany

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Job Level

Junior

Tech Stack

AWSEC2JavaMicroservicesPostgresPython

About the role

  • Develop and maintain backend applications using Java and Python
  • Design and manage relational databases, primarily using PostgreSQL
  • Build and integrate RESTful APIs and support microservices-based architectures
  • Participate in Scrum meetings, code reviews, technical discussions, and knowledge sharing
  • Write unit and integration tests to ensure high software quality
  • Assist in deploying and monitoring applications on AWS (e.g., EC2, RDS, S3, Lambda)
  • Assist in debugging, performance tuning, and incident resolution

Requirements

  • Bachelor’s degree in computer science, Engineering, or a related field (or equivalent experience)
  • Solid programming skills in Java and/or Python
  • Basic experience with PostgreSQL or other relational databases
  • Familiarity with AWS services (e.g., RDS, Lambda, CloudWatch)
  • Fluent in German and English, both written and spoken
  • Familiarity with REST APIs, HTTP, and web services
  • Understanding of microservices architecture and containerized deployment
  • Version control with GitHub and basic knowledge of CI/CD practices
  • Strong problem-solving skills and eagerness to learn new technologies
Benefits
  • Attractive salary and a competitive benefits package to reward your expertise and contributions
  • Tech equipment: Get the tools you need to succeed, including the latest technology to support your work
  • Join an international team: Collaborate with experts from across Europe and bring your ideas to life in a dynamic, global environment
  • Grow and develop: Gain hands-on experience and structured training through our PayTech University, designed to accelerate your career and help you reach your full potential

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
JavaPythonPostgreSQLRESTful APIsmicroservices architectureunit testingintegration testingperformance tuningdebuggingCI/CD
Soft skills
problem-solvingeagerness to learncommunicationteam collaboration
Certifications
Bachelor’s degree in computer scienceBachelor’s degree in Engineering