Senior Software Engineer (Java)
Confirmed on the employer's own hiring board on Oct 17, 2026. First seen by Alion on May 1, 2026. Keepit scores A on the Alion truth index.
Join Keepit’s mission to secure the digital world, and build a Java engineering team from the ground up.
About the role
We are building a Java team in our Krakow office at Keepit, and we're looking for a Senior Java Engineer to help shape it from the ground up. You will work on our cloud-to-cloud backup platform: a distributed, high-availability system that protects the critical SaaS data of organizations worldwide. This role involves owning complex components and features end-to-end, while also driving key architectural decisions for greenfield Java backend projects.
Proactiveness, initiative, and strong decision-making are essential for this role. We need someone who can set the bar, not just meet it.
You will:
Lead technical design and architecture for features and services, ensuring scalability and maintainability
Participate in all phases of the software development lifecycle
Collaborate with Product, QA, Support, and Operations teams to resolve issues and deliver improvements
Maintain high code quality by clear documentation, thorough code review, and architectural improvements
Ensure system reliability, including error handling, observability, and scalability
Mentor and grow other developers; be the go-to technical authority on the team
About you
Must-haves:
5+ years of backend Java development experience
Solid experience with the Spring Boot ecosystem, RESTful API design, and modern service-oriented architecture
Experience working with KeyCloak, and good understanding of Authentication and authorization systems
Solid understanding of SQL and working with relational databases
Experience with docker and containerized solutions
Familiarity with event-driven architecture (e.g. Kafka, RabbitMQ)
Experience with CI/CD pipelines and modern DevOps practices
Strong initiative and a proactive mindset, with a willingness to share knowledge in a collaborative environment
Ability to work independently and take full ownership of technical decisions
About us
Our platform provides customers with an immutable, historical archive of their data in systems such as Microsoft 365, Google Workspace, Salesforce, Entra ID, Dynamics 365, and Zendesk. We protect our customers against everything, from ransomware to simple accidents. We pride ourselves on backing up hundreds of petabytes of data in a performant, reliable, and predictable way.
As we collaborate across locations, English is our primary language. Please submit your CV in English to support the review process.
We offer:
Official employment - Umowa o pracę contract
Creative tax (KUP 50)
4 additional working days of vacation leave per full calendar year
3 days of internal sick leave without a doctor`s note
Health and Life Insurance
Employee Capital Plan (PPK)
Multisport card compensation
Coverage of professional training sessions, meetups, etc.
English-speaking club with native speakers
Polish language classes
Internet and Glasses reimbursement
Cosy office in Krakow city centre (Długa, 72) with beverages, fruit, and cookies
Winter and summer parties, events, team-buildings
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