Lead Java Backend Architect – Cloud Backup Platform

Keepit; Kraków; On-site; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Umowa o pracę contract

Health and Life Insurance

Employee Capital Plan (PPK)

Multisport card compensation

English-speaking club with native%20%

Job summary

Keepit is building a Java engineering team in Krakow and seeks a Senior Java Engineer to shape it from the ground up on a cloud-to-cloud backup platform. You will own complex backend components and drive architectural decisions for greenfield Java backend projects.

We value proactiveness, initiative and strong decision-making as essential to set the bar. You will mentor teammates and collaborate across Product, QA, Support, and Operations to deliver improvements.

Qualifications

• 5+ years of backend Java development experience.
• Solid Spring Boot, RESTful API design, and SOA.
• Experience with KeyCloak authentication/authorization.
• Solid understanding of SQL and relational databases.
• Experience with Docker and containerized solutions.
• Familiarity with event-driven architecture (Kafka, RabbitMQ).
• Experience with CI/CD pipelines and modern DevOps practices.
• Strong initiative and a proactive mindset with collaboration.

Responsibilities

• Lead technical design and architecture for features, ensuring scalability and maintainability.
• Participate in all phases of the software development lifecycle.
• Collaborate with Product, QA, Support, and Operations to resolve issues and deliver improvements.
• Maintain high code quality via documentation, code review, and architecture improvements.
• Ensure system reliability with proper error handling, observability, and scalability.
• Mentor and grow other developers, acting as the technical authority.

Skills

Java backend

Spring Boot

RESTful APIs

KeyCloak authentication

Relational SQL

Docker

Kafka

RabbitMQ

CI/CD

DevOps practices

Tools

Docker

Kafka

RabbitMQ

KeyCloak

PostgreSQL

Jenkins

Job description

Keepit is building a Java engineering team in Krakow and seeks a Senior Java Engineer to shape it from the ground up on a cloud-to-cloud backup platform. You will own complex backend components and drive architectural decisions for greenfield Java backend projects.

We value proactiveness, initiative and strong decision-making as essential to set the bar. You will mentor teammates and collaborate across Product, QA, Support, and Operations to deliver improvements.