Senior Java Developer (AI)

About the Project

Currently we are looking for a Mid/Senior Java Developers who will be developing products related to HR and Payroll area. The team is responsible for building scalable and reusable components that can be shared among other product teams. Right now they are looking for ways in which AI could enable their products with chatbots.

Tech: Java, Python, Spring Boot, Spring AI, GraphQL, n8n (no-code tool), Apache Artemis, Kubernetes

Work Mode: remote

Job Responsibilities

• Build and maintain backend services (mainly Java + Spring Boot, GraphQL APIs)

• Contribute to AI-driven solutions, leveraging off-the-shelf LLMs, Spring AI, and n8n (no-code tool for fast iteration)

• Work with Apache Artemis as message broker and Kubernetes for deployment

• Collaborate closely across teams – sharing knowledge, discussing solutions, and shaping best approaches

• (Senior role) Perform code reviews, provide technical guidance, and influence architecture decisions

• (Mid role) Deliver independently, work collaboratively, and grow your expertise in backend + AI solutions

Expectations

• Min. 5 years of experience in Java Developer role

• Solid backend experience in Java + Spring Boot (production systems)

• Familiarity with GraphQL and distributed systems

• Exposure to AI/LLM usage (e.g. chatbots, prompts) – not hardcore data science, but an understanding of practical use cases

• Experience with Kubernetes (huge plus)

• Comfortable occasionally using no-code tools (n8n) when it makes sense

• Strong communication and collaboration skills – we value people who can work independently but thrive in cross-team discussions

• (Senior role) Proven track record in code reviews, mentoring, and technical decision-making

• (Mid role) Independence, willingness to learn, and readiness to take ownership of tasks

• English on an advanced level (written and spoken)

We offer

• Ongoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and development

• Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors

• Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle

• Spectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres)

• Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients

• Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years

• A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad

About 7N

Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. 

Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.