Senior Java Developer, CDP API

MSCI is a leading provider of decision-support tools and services for the global investment community. With over 50 years of expertise in research, data, and technology, we power better investment decisions through our indexes, analytics, and ESG and climate products. Our Data Operations & Technology function collects, validates, quality-assures, and delivers the data that underpins every MSCI product — spanning ESG, climate, sustainability, corporate governance, geospatial, and private-assets data across thousands of companies and assets worldwide. 

MSCI is transforming its data operations through an agentic AI operating model — replacing manual, human-driven workflows with intelligent, autonomous agents that collect, validate, and quality-assure data at scale. 

The CDP API team is building the Centralized Data Platform Data Marketplace — the API-first distribution layer that turns MSCI's data into a modern, self-service product. Our mission is to make MSCI's datasets discoverable, subscribable, and consumable programmatically, so a quant developer, a portfolio manager working in Excel, or an AI agent can find the right data and start using it in minutes rather than weeks. 

• 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/{dataset_id}, POST /data/{dataset_id}/query, GET /data/{dataset_id}/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 18,000,000-21,000,000 / 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 Learning@MSCI 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 Women’s Leadership Forum.

At MSCI we are passionate about what we do, and we are inspired by our vision – to power better decisions. You’ll 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 [email protected] 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.

To all recruitment agencies

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