Senior Data Engineer at Xntltd

Company & Culture EXANTE is a pioneering wealth tech company that delivers cutting-edge centralized trading solutions and robust B2B financial infrastructure, driving value through innovative technology. Our bespoke, internally engineered trading platform provides seamless access to a diverse range of financial instruments, including stocks, ETFs, bonds, futures, and options, all within a single, multi-currency account. As a rapidly expanding global firm with over 700 talented employees from 70+ nationalities across 70 locations, we are a frontrunner in the financial sector. Our investment priorities are clear: We prioritize investing in our most valuable asset—our people. Join us in shaping the future of finance. Role Overview: We’re building an AI-ready data platform on top of our BigQuery warehouse and looking for a Senior Data Engineer to lead how AI interacts with data. This is a data engineering role with real AI exposure — focused on structure, semantics, and control, not model training. You will define how data is understood, accessed, and used by AI systems across the company. How We Build: We use AI-native workflows (Claude Code). A core part of the system is structured instruction layers (skill.md) that define: • how AI queries data • how metrics are interpreted • what is allowed vs restricted You will design both: • the data layer • and the instruction layer that makes it usable by AI Scope: Data Platform • Build clean, reusable analytical data layers in BigQuery • Move business logic from BI into the warehouse • Define metrics, dimensions, and semantic consistency AI Interaction • Enable reliable AI ↔ data interaction • Design schemas + instructions so AI produces correct outputs • Test and refine real AI usage (not theory) Access & Governance • Implement data-layer access control (not BI-layer) • Row/column-level security, role/attribute-based access • Ensure consistent behavior across BI, AI, and internal tools • Ensure metric reconciliation across different data sources Prevent: • sensitive data leakage • shadow metric layer • uncontrolled query cost Automation: • Replace manual data workflows with AI-driven processes • Build agents for reporting, validation, and internal analytics Experience: • Strong SQL + data modeling (BigQuery or similar) • Experience building scalable data layers (not just pipelines) • Understanding of metrics, semantics, and analytical correctness • Hands-on exposure to LLMs / AI tools (practical, not theoretical) • Ability to design systems where data is consumed by machines Bonus experience: • dbt / semantic layers • BigQuery performance & cost optimization • Finance / brokerage data • Fine-grained access control implementations • AI agent / tool-based workflows Why This Role: • You will define how AI uses data in a real business • Work on non-trivial problems (semantics, access, correctness) • Build systems from first principles, not maintain legacy • High ownership A group of disruptive technology experts created EXANTE. With an impressive track record in the industry and knowledge of the markets, our systems are built to democratize access to global financial instruments for professional traders and institutional investors. Through our robust, cutting-edge trading platforms, you can offer clients access to comprehensive, global financial instruments and investment possibilities while keeping their data safe and private. EXANTE is a global prime broker backed by proprietary technology and dedicated service. All regulated group companies and fully controlled affiliates and subsidiaries are committed to compliance with data protection laws, including the GDPR. We process personal data in line with the GDPR principles of fairness, purpose limitation, transparency, data minimisation, storage limitation and deletion, accuracy, confidentiality and integrity, and accountability. We rely on legitimate interests to assess and manage your application, after determining that our interests are not overridden by your rights and interests. You have the rights of access, rectification, data portability, erasure, restriction of processing, and objection to processing. To exercise your rights or contact our Data Protection Officer, please see our GDPR policy at [Upgrade to PRO to see link] We retain recruitment data only for as long as necessary for the purposes described above, after which it will be securely deleted unless we are required to keep it longer to comply with law or you consent to a longer retention. Where personal data is transferred outside the EEA, it will be protected to a standard at least equivalent to that sought by the GDPR. Personal data is safeguarded by technical and organisational measures that are reviewed and updated regularly. This website is not intended for individuals under 18 and we do not knowingly collect data relating to children .