Senior IT Developer

Jobtailor; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

Jobtailor in Warsaw is seeking a software engineer to design, develop, test, and maintain cloud-native applications and legacy systems, focusing on Java and API development.

You will analyze requirements, implement microservices, and support CI/CD pipelines with Docker, Kubernetes, and cloud migrations. Collaboration with cross-functional teams will ensure secure, scalable, high-quality software. Continuous learning is encouraged.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or related field.
• 3–5 years of software development experience.
• Proficient in Java and at least one cloud platform (Azure or AWS).
• Experience with cloud-native development, containers, Kubernetes, and microservices.

Responsibilities

• Design, develop, test, deploy, and maintain software applications using cloud and legacy technologies.
• Translate business requirements into technical solutions.
• Develop scalable cloud-native apps, APIs, and microservices.
• Maintain and enhance legacy applications for business continuity.
• Participate in modernization and cloud migration projects.
• Perform unit testing and support various testing levels.

Skills

Java

Analytical thinking

Communication

Problem-solving

Team collaboration

Detail-oriented

Independent worker

Continuous learning

Proactive

Security awareness

Education

Bachelor's degree in Computer Science/Software Engineering/Information Technology

Tools

Docker

Kubernetes

Git

Azure DevOps

GitHub

Job description

Responsibilities

• Design, develop, test, deploy, and maintain software applications using cloud and legacy technologies
• Analyze business requirements and translate them into technical solutions
• Develop scalable cloud-native applications, APIs, and microservices
• Maintain and enhance existing legacy applications to ensure business continuity
• Participate in application modernization and cloud migration projects
• Perform unit testing and support integration, system, and user acceptance testing
• Troubleshoot, debug, and resolve application issues in development and production environments
• Optimize application performance, scalability, and security
• Collaborate with Solution Managers, Business Analysts, QA Engineers, DevOps Engineers, and Infrastructure teams
• Participate in code reviews and ensure adherence to development standards and best practices
• Create and maintain technical documentation, including design specifications and operational procedures
• Support CI/CD pipelines and automated deployment processes
• Continuously evaluate new technologies and recommend improvements to existing solutions

Requirements

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field
• Minimum 3–5 years of experience in software development
• Strong programming experience in one or more languages, especially Java
• Experience with cloud platforms such as Microsoft Azure and AWS
• Knowledge of cloud-native development, containers (Docker), Kubernetes, and microservices architecture
• Experience with relational databases (SQL Server, Oracle, PostgreSQL, MySQL) and API development
• Familiarity with Git, Azure DevOps, GitHub, or other version control and CI/CD tools
• Understanding of Agile/Scrum software development methodologies
• Knowledge of secure software development practices
• Strong analytical and problem-solving skills
• Excellent programming and debugging capabilities
• Ability to work independently and collaboratively in cross-functional teams
• Strong communication and stakeholder engagement skills
• High attention to detail and commitment to software quality
• Adaptability to both modern cloud technologies and legacy application environments
• Strong organizational and time management skills
• Continuous learning mindset and willingness to adopt emerging technologies
• Results-oriented with a proactive approach to problem solving

Core Competencies

Demonstrates expertise in designing and developing scalable cloud-native applications, APIs, and microservices while maintaining legacy systems. Proficient in cloud platforms, secure software development practices, and collaborative problem-solving within cross-functional teams.

Tools & Technologies

• Docker
• Kubernetes
• Git
• Azure DevOps
• GitHub

Certifications & Qualifications

• Bachelor's Degree in Computer Science
• Software Engineering
• Information Technology