Java Developer

Spin.AI is a global SaaS cybersecurity company that protects mission‑critical data across Google Workspace, Microsoft 365, Salesforce, Slack & more. Our product — SpinOne — is a platform that combines SSPM, ransomware protection, DLP, backup & recovery for enterprise customers worldwide.

We are looking for a Backend Developer with strong Java and Spring Boot experience to join our engineering team.

You will work on backend services for a complex cybersecurity SaaS product, including integrations, data processing, asynchronous workflows, access control, permissions, audit logs, backup and recovery flows.

This role is based in our Lisbon office in a hybrid format. If you are not currently in Portugal, we are open to remote work during the trial period, with relocation to Lisbon afterward.

Responsibilities

• Develop and maintain backend services using Java and Spring Boot.
• Write SQL queries, analyze execution plans, and optimize PostgreSQL performance, including index management.
• Use MyBatis for database interaction.
• Build and maintain integrations with internal and external APIs.
• Work with RabbitMQ and other message brokers to orchestrate asynchronous workflows.
• Participate in technical discussions, code reviews, and feature planning.
• Collaborate with frontend, QA, DevOps, and Product teams.
• Debug issues, analyze logs, and improve backend performance and reliability.
• Write clean, maintainable, and well‑structured code.

Qualifications

• 4+ years of commercial backend development experience.
• Strong experience with Java and Spring Boot, including Java 19.
• Experience with MyBatis and PostgreSQL (SQL skillset, query optimization, index design).
• Experience with RabbitMQ or a similar message broker.
• Experience developing and integrating REST APIs.
• Ability to work with complex product logic and enterprise‑level workflows.
• Good communication skills and ownership mindset.
• English: Intermediate+.
• Experience with Elasticsearch.
• Experience with AWS S3, Google Cloud Storage, or Azure Blob Storage.
• Experience with Salesforce API, Microsoft Graph API, Google API, and Slack API.
• Experience with cybersecurity, SaaS, or enterprise products.
• Experience with Claude AI or other AI tools for development productivity.
• Familiarity with Git/Bitbucket, Jira/Confluence, and CI/CD pipelines.

Company Culture and Benefits

• Work in a fast‑moving, high‑impact cybersecurity company recognized by Gartner, Forrester, and G2.
• Work on a real product with real users and visible business impact.
• Engage with an interesting and large‑scale product.
• Solve complex, non‑trivial security and engineering challenges.
• Opportunity to influence technical and product decisions.
• Trust from management and autonomy in day‑to‑day work.
• Strong, professional team with deep expertise.
• Annual performance‑based salary review.
• Annual performance‑based bonus.
• Referral bonuses.
• Educational budget.
• Sport & hobby compensation.
• Medical insurance compensation.
• Company celebrations (birthdays, anniversaries, weddings, etc.).
• Corporate travel parties twice a year.