Mid Java Developer

Tenvalleys; Warszawa; Híbrido; PLN 120 000 - 180 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Flexible working hours

Remote work options

AI tool licenses

Resumo da oferta

Tenvalleys in Warszawa is seeking a Mid-Level Java Developer to build and modernise backend systems in a microservices environment for enterprise clients.

You will join a cross-functional team of developers, analysts, testers and DevOps engineers, delivering core systems with Agile practices and AI-assisted tooling.

Qualificações

• 2–4 years of commercial Java development experience.
• Proficiency in Spring Boot; hands-on with Spring Cloud.
• Designed and built backend services within a microservices architecture.
• Experience modernising legacy code; Java version migrations (e.g., 8 to 17).
• Understanding asynchronous communication and message brokers (ActiveMQ or RabbitMQ).
• Integrated systems via REST APIs.
• Experience with Oracle or other relational databases; writing/optimising SQL.
• W ork with Docker and Kubernetes in development and deployment.
• Familiar with Git and CI/CD practices.
• Experience in Agile/Scrum teams; collaboration with analysts/testers/DevOps.
• Open to using AI tools in daily work.
• Familiarity with Camunda, Angular/React TS, or banking integrations a plus.
• Fluent in Polish and English.

Responsabilidades

• Develop and maintain Java applications; design backend solutions in microservices; integrate via REST APIs.
• Modernise services by upgrading Java versions, replacing components, improving code, and adding features.
• Collaborate with analysts, testers and DevOps in an Agile/Scrum setup; use AI tools in daily engineering.

Conhecimentos

2–4 years Java development

Polish and English fluency

Agile/Scrum teamwork

Ferramentas

Spring Boot

Spring Cloud

REST APIs

Docker

Kubernetes

Git

CI/CD

ActiveMQ/RabbitMQ

Oracle/SQL databases

Camunda

Angular/React TS

Descrição da oferta de emprego

Java Developer - Mid-Level

We are looking for a Mid Java Developer to build and modernise backend systems in a microservices environment for enterprise clients.

Backend Development + Microservices

You will join a team of developers, analysts, testers and DevOps engineers who have delivered together for years, working on systems at the core of our clients' operations.

What you will do

You will develop and maintain Java applications, design backend solutions within a microservices architecture, and integrate internal and external systems through REST APIs.

A good part of the work is modernisation: upgrading services to current Java versions, replacing outdated components, improving existing code and adding new features along the way. You will work day to day with analysts, testers and DevOps engineers in an Agile/Scrum setup, and use AI tools as part of your everyday engineering.

We are looking for someone who

• Has 2–4 years of commercial experience in Java development.
• Is highly proficient in Spring Boot and has hands‑on experience with Spring Cloud.
• Has designed and built backend services within a microservices architecture.
• Has worked with legacy code and understands what it takes to modernise it safely. Experience migrating between Java versions (e.g. Java 8 to Java 17) is a strong plus.
• Understands asynchronous communication and message brokers. Experience with ActiveMQ or RabbitMQ is welcome.
• Has integrated internal and external systems using REST APIs.
• Has practical experience with Oracle or other relational databases, including writing and optimising SQL queries.
• Works with Docker and Kubernetes in day-to-day development and deployment.
• Cares about code quality and performance, and is comfortable optimising existing code as well as delivering new features.
• Uses Git and is familiar with CI/CD practices.
• Has worked in Agile/Scrum teams and collaborates easily with analysts, testers and DevOps engineers.
• Is open to using AI tools in daily work to speed up development, analysis and testing.
• Familiarity with Camunda, Angular or React with TypeScript, or integrating banking systems is a plus.
• Communicates fluently in Polish and English.
  

What we do not expect

You do not need to tick every box on the list above. Camunda, frontend work and banking integrations are a plus, and if you have not migrated between Java versions yet, you can pick it up with the team.

You also do not need to be a Kubernetes administrator. You will use Docker and Kubernetes as a developer, alongside DevOps engineers on the team. Openness to AI tools is enough; no machine learning background is required.

What we offer

• Competitive salary and benefits package.
• Flexible working hours and remote work options.
• Licenses for advanced AI tools.
• A supportive team that has delivered together for years.
• Professional growth on enterprise-scale projects.
  

Sounds interesting?