Senior Java Developer, CDP API

• Design and implement core authentication and authorization: the POST /auth/token endpoint JWT validation middleware and the entitlement enforcement layer governing dataset field and channel-level access.
• Build and maintain the entitlement decision cache (Redis/Memorystore) to keep authorization checks under a sub-10ms overhead target including invalidation on entitlement changes.
• Standardize API error handling (401/403/429) with correlated request IDs in a uniform error envelope and configure Apigee for auth pass-through tier-based rate limiting and rate-limit header propagation.
• Develop catalog APIs (GET /catalog/datasets /catalog/datasets/id /catalog/search) with entitled metadata exposure and full-text/faceted search backed by a resilient descriptor cache.
• Build core data access endpoints (GET /data/datasetid POST /data/datasetid/query GET /data/datasetid/sample) along with a shared cursor-pagination and query-filter executor supporting large result sets.
• Implement both synchronous and asynchronous read paths through the Query Accelerator covering small/recent queries as well as bulk export and deep-history jobs (submission status delivery).
• Implement non-blocking usage-event emission and the GET /usage/me summary endpoint and build the MCP tool-definition generator kept in sync with the OpenAPI contract via CI.
• Contribute to API design during discovery including the OpenAPI v1 contract query/pagination grammar auth/entitlement architecture and MCP tool-definition and usage-event schemas.

• Google Cloud Platform (GCP) mandatory. Hands-on experience building and deploying services on GCP is required for this role. Familiarity with Cloud Run IAM Cloud Logging/Monitoring and GCP networking (PSC/VPC) expected.
• Strong core Java (17) and modern JVM development; Quarkus (or Spring Boot with willingness to work in Quarkus) on the JVM.
• REST API design and implementation; OpenAPI/contract-first development.
• Automated testing discipline unit tests written alongside code as definition-of-done; comfort with contract and integration testing.
• CI/CD pipelines and containerised deployment.
• AI-agent-first software development model. Ability and willingness to work within our AI-agent-first development approach: using agentic development platforms and AI coding assistants as the primary way of building and using AI-assistant models for design and specification work not just code generation. Developers are expected to direct review and refine agent-produced work rather than hand-write everything from scratch.

What we offer you

• Salary range: HUF 180000/ year plus eligible for annual bonus
  
  
• Transparent compensation schemes and comprehensive employee benefits tailored to your location ensuring your financial security health and overall wellbeing.

• Flexible working arrangements advanced technology and collaborative workspaces.

• A culture of high performance and innovation where we experiment with new ideas and take responsibility for achieving results.

• A global network of talented colleagues who inspire support and share their expertise to innovate and deliver for our clients.

• Global Orientation program to kickstart your journey followed by access to our platform AI Learning Center LinkedIn Learning Pro and tailored learning opportunities for ongoing skills development.

• Multi-directional career paths that offer professional growth and development through new challenges internal mobility and expanded roles.

• We actively nurture an environment that builds a sense of inclusion belonging and connection including eight Employee Resource Groups. All Abilities Asian Support Network Black Leadership Network Climate Action Network Hola! MSCI Pride & Allies Women in Tech and Womens Leadership Forum.

At MSCI we are passionate about what we do and we are inspired by our vision to power better decisions. Youll be part of an industry-leading network of creative curious and entrepreneurial pioneers. This is a space where you can challenge yourself set new standards and perform beyond expectations for yourself our clients and our industry.

MSCI strengthens global markets by connecting participants across the financial ecosystem with a common language. Our research-based data analytics and indexes supported by advanced technology set standards for global investors and help our clients understand risks and opportunities so they can make better decisions and unlock innovation. We serve asset managers and owners private-market sponsors and investors hedge funds wealth managers banks insurers and corporates.

MSCI Inc. is an equal opportunity employer. It is the policy of the firm to ensure equal employment opportunity without discrimination or harassment on the basis of race color religion creed age sex gender gender identity sexual orientation national origin citizenship disability marital and civil partnership/union status pregnancy (including unlawful discrimination on the basis of a legally protected parental leave) veteran status or any other characteristic protected by law. MSCI is also committed to working with and providing reasonable accommodations to individuals with disabilities. If you are an individual with a disability and would like to request a reasonable accommodation for any part of the application process please email and indicate the specifics of the assistance needed. Please note this e-mail is intended only for individuals who are requesting a reasonable workplace accommodation; it is not intended for other inquiries.

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