We’re currently looking for a Middle+ Java Developer to join our team in a full-time collaboration format.
About us: Mind Studios specializes in mobile and web app development, helping businesses unlock their potential and turn ideas into profitable products. Our key domains include: Real Estate, Logistics, Healthcare, Fitness, and Mental Health.
We are looking for a person on a certain e-government project. Roughly we assume that the contract can last from September 2026 till the end of March 2027 with optional prolongation.
About the Project: The project is a large-scale digital platform from scratch designed to support the administration of various social benefits Western European country through a modular and scalable architecture. The system is structured around two key layers: — Horizontal functions — these are shared core services used across all benefits (e.g., application review, eligibility checks, document management, communication, payment processing, appeals). — Vertical functions — these represent individual benefit flows, each with its own set of rules, data requirements, and validation logic.
At the heart of the project is the User Profile, which serves as a central data repository. It collects and stores key personal and household information in a reusable way, allowing different benefit applications to retrieve data without asking the user to re-enter the same information.
In this role, you will need: — clear and effective communication skills, both verbal and written, ability to convey ideas, information, and messages accurately and efficiently; — experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations); — ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation; — analytical thinking, problem-solving abilities, and strategic approach to technical challenges.
What is important to join us: Must-have requirements — advanced English, both spoken and written. The developer must communicate confidently with native English-speaking colleagues, participate actively in meetings, clarify requirements, explain technical decisions, and write clear PR descriptions and documentation; — experience with Java, including modern Java features; the project currently uses Java 21; — strong commercial experience with Spring Boot, Spring Web/MVC, Spring Data JPA, and Hibernate; — solid understanding of: * transactions and entity lifecycle; * database constraints and data integrity; * concurrency and idempotency; * date/time handling; * validation and error handling.
— strong SQL and relational-database skills. The candidate must be able to investigate existing data, diagnose duplicates and inconsistent states, and design safe schema or query changes; — experience maintaining and debugging a large existing codebase or multi-module system, including tracing behaviour across services and shared libraries; — ability to understand complicated business rules and translate incomplete or changing requirements into predictable implementation; — strong REST API design and integration experience, including request/response contracts, backward compatibility, and OpenAPI; — experience writing meaningful unit and integration tests with JUnit and Mockito. Regression tests should accompany bug fixes; — good Git and pull-request practices: focused changes, readable commits, careful reviews, and constructive technical discussion; — demonstrated ownership: independently reproducing problems, finding root causes, considering edge cases, and communicating risks before implementation; — willingness to question ambiguous requirements instead of silently making assumptions; — ability to work effectively in a distributed, highly communicative team.
Nice-to-have requirements: — commercial experience with Oracle Database and Oracle-specific SQL behaviour; — experience with Flyway database migrations; — experience with Kafka or another event-driven messaging platform; — knowledge of Spring Security, OAuth2/JWT, and Keycloak; — experience with Camunda/Zeebe or BPMN-based workflows; — experience with caching, particularly Caffeine; — familiarity with Azure DevOps, Maven multi-module builds, Sonar, PMD, Checkstyle, and dependency/security upgrades; — knowledge of audit logging, personal-data protection, and security-sensitive applications.
About stages: 1st stage: pre-interview with a recruiter; 2nd stage: interview with Team Lead and People Ops; 3rd stage: english test; 4th stage: interview with customer; 5th stage: offer.
