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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on modernizing a customer messaging delivery platform. Work involves designing and maintaining distributed systems and API-driven services in an Agile/DevOps environment. Required technologies include Java, Spring Boot, Kubernetes, AWS (or other cloud), OpenAPI/Swagger, GitHub, Jenkins, Maven, Groovy, and knowledge of OAuth 2 and Kong API Gateway. Core responsibilities cover developing scalable applications, implementing and documenting REST APIs, participating in code reviews, creating automated tests, supporting CI/CD, and ensuring security and compliance. Hybrid work with 2 days on-site in Kraków and benefits including private healthcare and training support.
from: 10 November 2026
to: 10 December 2026
28 000 - 33 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland
Requirements
Expected technologies
Java
Spring Boot
Kubernetes
AWS
Swagger
OpenAPI
GitHub
Jenkins
Maven
Groovy
Operating system
Windows
Our requirements
- 2 days a week from the office in Kraków.
- Strong professional experience in Java and Spring Boot development
- Hands-on experience with Kubernetes for container orchestration
- Practical knowledge of AWS or other cloud platforms
- Expertise in REST API design and documentation (Swagger/OpenAPI 3.0)
- Proficiency with CI/CD tools: GitHub, Jenkins (shared libraries), Maven, Groovy
- Understanding of authentication and authorization protocols, particularly OAuth 2; experience with Kong API Gateway
- Familiarity with Agile methodologies, including TDD, Scrum practices, and automation frameworks
- Ability to troubleshoot complex technical problems and design innovative solutions
- Strong communication skills to work effectively with cross-functional teams
Optional
- Previous experience with event-driven architectures and distributed messaging systems
- Familiarity with observability stacks and performance monitoring tools
- Ability to provide technical leadership and mentoring within a team
Your responsibilities
- Design and develop high-quality, scalable applications and services in compliance with industry and internal standards
- Deliver solutions on time, meeting all functional and non-functional requirements
- Participate in code reviews, challenge design and implementation decisions to ensure best practices
- Conduct unit and automated testing, ensuring coverage meets project standards
- Collaborate within Agile product teams, working closely with developers, architects, and stakeholders
- Implement and maintain API endpoints following OpenAPI 3.0 and RESTful design principles
- Contribute to automation and CI/CD pipelines, support deployment activities, and operational readiness
- Promote a culture of engineering excellence and continuous improvement through code quality, performance tuning, and mentoring junior engineers
- Ensure compliance, security standards, and alignment with organizational governance policies
- Note: Detailed project information will be shared during the recruitment process.
About the project
Join the team driving transformation at the heart of customer communications. The Messaging Delivery Platform enables seamless, secure, and efficient outbound messaging to customers across multiple channels aligned with business strategy. This platform is undergoing modernization and standardization, offering a dynamic environment for engineers to work on innovative solutions that ensure reliability, scalability, and performance at an enterprise level.
As a Senior Java Developer, you will design, build, and maintain distributed systems and API-driven services using modern technology stacks in an Agile, DevOps-oriented environment.
Sounds like your kind of challenge?
This is how we organize our work
This is how we work
agile
This is how we work on a project
- TDD
- Continuous Deployment
- Continuous Integration
- DevOps
- testing environments
Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.
What we offer
- Flexible cooperation model
- Hybrid work setup – 2 days a week from the office in Kraków.
- Collaborative team culture – work alongside experienced professionals eager to share knowledge.
- Continuous development – access to training platforms and growth opportunities.
- Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more.
- High quality equipment – laptop and essential software provided.
Benefits
- sharing the costs of sports activities
- private medical care
- sharing the costs of professional training & courses
- life insurance
Mindbox Sp. z o.o.
At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.
Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.
Backend Developer
28k–33k zł / mth. (B2B)
I apply to:
Mindbox Sp. z o.o.
Kraków, Lesser Poland
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