Mid-Level Java API Developer - Cloud-Native Backend Services

Mid-Level Java API Developer – Cloud-Native Backend Services

Miejsce pracy: Kraków

Technologies we use

Expected

• Java
• Spring Boot
• Maven
• SoapUI
• Postman
• XML

Optional

• Kafka
• AWS
• Kubernetes

About the project

As a Mid-Level Java API Developer, you will be working for our client, a leader in digital banking services. You will design, build, and run secure, scalable APIs that support HSBC’s digital products and internal platforms. Collaborating within a cross-functional engineering team, you'll enable reliable services using cutting-edge Java and cloud-native architecture, including event-driven patterns. This role offers an exciting chance to contribute to financial technology innovation and advance your career in a dynamic environment.

Unleash the power of modern development — drive innovation through scalable API solutions!

Krakow-based opportunity with hybrid work model.

Only candidates with an existing legal right to work in the European Union will be considered for this role.

Your responsibilities

• Build and evolve high-performing, scalable APIs and backend services using Java, Spring Boot, Maven, primarily in IntelliJ
• Collaborate with engineers, product owners, architects, and testers to deliver well-designed services aligned with business goals
• Design APIs following industry standards and patterns (e.g., REST, GraphQL, SOAP), ensuring versioning and backward compatibility
• Integrate with third-party and internal APIs, focusing on resilience, observability, and error handling
• Develop and support event-driven services using Kafka, including topic design, schema evolution, and message reliability
• Build cloud-ready services on AWS platforms such as Kubernetes/EKS, Fargate, Redis, RDS, S3, and Route 53
• Write automated tests, perform API testing, troubleshoot production issues, and contribute to continuous quality improvements
• Maintain clear API documentation (OpenAPI/Swagger) and create runbooks as needed
• Contribute to engineering standards focused on security, performance, and maintainability

Our requirements

• At least 4 years of experience building APIs and backend services in Java
• Strong experience with Spring Boot and Maven development tooling
• In-depth understanding of backend architecture, including service design, data access, caching, and resilience patterns
• Knowledge of API standards such as REST, GraphQL, and SOAP
• Familiarity with API tooling like Postman, Swagger UI/OpenAPI, SoapUI
• Comfort working with JSON and XML data formats
• Proven ability to diagnose issues, fix defects, and enhance system reliability
• Excellent collaboration skills and clear technical communication

Optional

• Experience with event-driven architecture at scale (Kafka streams, schema registry, idempotency, exactly-once/at-least-once delivery)
• Hands-on experience building and operating services on AWS (Kubernetes/EKS, Fargate, Redis, RDS, S3)
• Knowledge of CI/CD pipelines, observability tools (logging, metrics, tracing), and secure coding practices
• Strong critical thinking with a pragmatic, delivery-oriented mindset

This is how we organize our work

This is how we work

• at the client's site
• agile
• scrum

This is how we work on a project

• Continuous Deployment
• Continuous Integration

What we offer

• Stable and long-term cooperation with very good conditions.
• Enhance your skills and develop your expertise in the financial industry.
• Work on the most strategic projects available in the market.
• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years.
• Participate in Social Events, training, and work in an international environment.
• Access to attractive Medical Package.
• Access to Multisport Program.
• Access to Pluralsight.
• Flexible hours.

Benefits

• sharing the costs of sports activities
• private medical care
• flexible working time
• fruits
• integration events
• corporate gym
• saving & investment scheme
• no dress code
• coffee / tea
• drinks
• christmas gifts
• birthday celebration
• sharing the costs of a streaming platform subscription
• access to +100 projects
• access to Pluralsight

Recruitment stages

• online interview
• online interview

#GETREADY to meet with us!

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people.

We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data.

ITDS’s Whistleblower Procedure

You can report violations in accordance with ITDS’s Whistleblower Procedure available here:

ITDS Polska Sp. z o.o.

ITDS supports financial service providers to take the next steps.

We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization.

We see where banks, insurers, payment companies, or fintech can go and how they can get there.

That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality.

ITDS in Poland - Pure player in new Technologies & Financial Industry

+300 IT implementation professionals

+20 clients in the Banking, Insurance, Payment & Fintech Industry

ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities.

Informujemy, że administratorem danych jest ITDS z siedzibą w Warszawie, ul. Złota 59 (dalej jako "administrator"). Masz prawo do żądania dostępu do swoich danych osobowych, ich sprostowania, usunięcia lub ograniczenia przetwarzania, prawo do wniesienia sprzeciwu wobec przetwarzania, a także prawo do przenoszenia danych oraz wniesienia skargi do organu nadzorczego. Dane osobowe przetwarzane będą w celu realizacji procesu rekrutacji. Podanie danych w zakresie wynikającym z ustawy z dnia 26 czerwca 1974 r. Kodeks pracy jest obowiązkowe. W pozostałym zakresie podanie danych jest dobrowolne. Odmowa podania danych obowiązkowych może skutkować brakiem możliwości przeprowadzenia procesu rekrutacji. Administrator przetwarza dane obowiązkowe na podstawie ciążącego na nim obowiązku prawnego, zaś w zakresie danych dodatkowych podstawą przetwarzania jest zgoda. Dane osobowe będą przetwarzane do czasu zakończenia postępowania rekrutacyjnego i przez okres możliwości dochodzenia ewentualnych roszczeń, a w przypadku wyrażenia zgody na udział w przyszłych postępowaniach rekrutacyjnych - do czasu wycofania tej zgody. Zgoda na przetwarzanie danych osobowych może zostać wycofana w dowolnym momencie. Odbiorcą danych jest serwis Hello HR oraz inne podmioty, którym powierzyliśmy przetwarzanie danych w związku z rekrutacją.
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