Java Backend Engineer improving and maintaining KAYAK’s search and booking systems. Collaborating with teams to deliver reliable user experiences in travel technology.
About the role
- Senior Backend Engineer building scalable microservices with TypeScript and AWS at Kolomolo. Join an innovative tech company focused on digital modernization and team collaboration.
Responsibilities
- Design, develop, and maintain backend microservices using TypeScript.
- Build and deploy scalable applications using AWS Serverless architecture (e.g., Lambda, API Gateway, DynamoDB).
- Take full ownership of the development lifecycle: feature delivery, bug fixing, refactoring, and production deployments.
- Develop and maintain automated tests to ensure high-quality, reliable code.
- Contribute to system modernization and migration initiatives based on architectural guidelines.
- Collaborate closely with cross-functional teams to deliver high-impact solutions.
- Participate actively in Agile/Scrum ceremonies and continuous improvement processes.
- Ensure best practices in code quality, performance, and security.
Requirements
- 5+ years of experience in backend development.
- Strong proficiency in TypeScript / Node.js.
- Hands-on experience with AWS Serverless services.
- Solid understanding of microservices architecture.
- Experience with test automation and quality-driven development.
- Ability to work independently and take ownership of solutions.
- Experience working in Agile/Scrum environments.
- Strong communication skills in an international setting.
- Nice to Have: Experience with enterprise system integrations, Knowledge of event-driven architecture, Familiarity with CI/CD pipelines and DevOps practices.
Benefits
- Competitive salary and benefits.
- Career development opportunities in a growing tech company.
- Continuous learning culture: mentorship, internal training, and certifications.
- Flexible, agile work environment (remote, hybrid, or on-site in Kraków).
- Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere.
- Flat management structure, where your voice matters.
- Regular team events and a social, supportive work culture.
- B2B contract or Contract of Mandate (Umowa Zlecenie).
Job title
Job type
Experience level
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Not specified
Degree requirement
Tech skills
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