Senior Java Developer Poznań B2B 1 100 – 1 400 PLN/day

Jit; Poznań; Hybrid; PLN 240,000 - 340,000; Full time

Benefits offered by this job

Flexible work organization

Hybrid work model

Professional development programme

Daily English communication

Job summary

Jit is seeking an experienced Senior Backend Developer to lead the development and maintenance of modern backend applications based on Java and microservices. The role involves designing scalable solutions, building REST APIs, working with relational databases, and supporting automated deployment processes.

You will collaborate with teams in an international environment and use cutting-edge engineering practices.

Qualifications

• 8+ years of hands-on experience in Java and Spring Boot.
• Strong knowledge of REST API design and microservices architecture.
• Relational databases and SQL proficiency.
• Experience with CI/CD pipelines and automated deployment.
• Hands-on experience with Docker for packaging and deploying apps.
• Interest in Agentic AI tools (e.g., Copilot, Cursor, Claude Code) to accelerate engineering workflows.
• Excellent English communication, both written and spoken.

Skills

Java

Spring Boot

REST API design

Microservices architecture

SQL

CI/CD pipelines

Agentic AI tools

English communication

Tools

Docker

Kafka

RabbitMQ

Job description

Work mode: hybrid from Poznań (preferred 1 day / week in the office)

Why choose this offer?

• You can expect a flexible work organization
• The international work environment will give you the opportunity to interact with the English language on a daily basis
• The Jit community will bring you a nice time duringregular integration meetings

Project

The project focuses on the development and maintenance of modern backend applications based on Java and microservices architecture. The role involves designing and implementing scalable solutions, developing REST APIs, working with relational databases, and supporting automated deployment processes. The team works with modern engineering practices and explores AI-assisted development tools to improve software delivery and development workflows.

Expected competencies and knowledge

• At least 8 yearsof hands‑on experienceinJava, and Spring Boot
• Good knowledge ofREST API design and microservices architecture
• Solid understanding of relational databases and proficiency inSQL
• Experience inCI/CD pipelines to ensure smooth and automated delivery
• Experience in package and deploy applications using Docker
• Eagerness to explore and implement Agentic AI tools (e.g., "Copilot, Cursor, Claude Code") to accelerate engineering workflows
• Excellent verbal and written English skills, along with strong communication abilities

Nice to have

• Experience in cloud solutions

Experience with event-driven architectures, including Kafka and messaging solutions such as RabbitMQ

Technologies you'll work with

• Spring Boot
• REST API
• SQL
• CI/CD
• Docker
• Microservices

About Jit Team

The Human Factor of IT – it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

Here’s how we get from first “hello” to “welcome aboard

You’ll meet with our HR team to discuss your experience, approach to software development, and teamwork. We’ll also verify your English language proficiency as part of the conversation. Then, you’ll take part in atechnical interview focused on your skills and problem-solving mindset.

We believe agreat workplace is more than aset of benefits. It’s about trust, long-term relationships, and an environment where people can do their best work.

Share and gain experience. Jit Academy is aplatform serving amutual knowledge exchange. Lecture others and share your expertise or join the audience.

Jit Communities

Join the group of experts. We ensure constant growth, that’s why we keep building communities dedicated to mutual education.

Growth support

We value people who are looking to develop their skillset. We proudly finance avariety of courses and certifications so that you can gain new competencies.

Jit Summer Office

Gain access to the office located at the very beach in Chałupy. Jit Trailer awaits visits of the team members and their families.

Jit Boats

Cruise the bay thanks to the motorboat awaiting at the Yacht Park in Gdynia. Furthermore, there is afleet of jet skis and kites located at the beach in Chałupy.

Start the day without haste.
At Jit, we begin and finish the day of work within acertain time frame, in stead of fixed hours.

Bonuses for content creators

We provide bonuses to those willing to participate in industry events as public speakers, and to content creators writing articles for our blog.

Mental health support

Mental health is fundamental. Take advantage of psychologists and psychotherapists’ support and reach for psychoeducational content on the wellbeing platform

We provide our teams with high-quality gear necessary to work. Choose between MacOs or Windows and work the way you prefer.

Teambuilding events

Meet new, interesting people. We’re dedicated to building human relations and often host informal events that bound our team members.

Classes conducted for small groups, lectured
by our teachers, guarantee rapid results.

Take care of your wellbeing. Members of Jit Team, gain access to awide range of medical plans provided by Medicover or PZU.

We provide Multisport and Medicover Sport gym cards so that you can improve your physical condition.

Life insurance

Increase your safety. No matter the form of employment, we provide life insurance plans to our colleagues.

Haven’t found asuitable job description, but you still wanna be apart of The Team?

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