CAREERS

Build the ownership layer

We're a small team turning what people already own into money they can actually use. If that sounds like your kind of problem, come build it with us.

  • Build and ship growth experiments across acquisition, activation and referral.
  • Own landing pages, onboarding flows and the analytics behind them.
  • 3+ years shipping production TypeScript / Next.js.
Apply: careers@castar.tech
  • Source, brief and manage finance & crypto creators end-to-end.
  • Turn partnerships into a measurable, repeatable acquisition channel.
  • Experience running creator, affiliate or influencer programs.
Apply: careers@castar.tech
  • Own transaction monitoring, sanctions screening and SAR filing.
  • Build regulator-ready AML/KYC processes as we scale across markets.
  • Background in fintech or crypto compliance.
Apply: careers@castar.tech
  • Design a ledger that handles retries, reversals and incomplete settlement without losing its audit trail.
  • Connect asset records with custody and settlement partners, and investigate mismatches.
  • Bring experience with transactional databases, distributed systems and financial data correctness.
Apply: careers@castar.tech
  • Normalize provider feeds, instrument identifiers and market calendars across European and global assets.
  • Detect stale prices, missing events and inconsistent data before they reach the product.
  • You have built backend data pipelines and understand streaming APIs, SQL and production monitoring.
Apply: careers@castar.tech
  • Turn partner onboarding and integration testing into clear, reusable workflows.
  • Build consent and permission controls with useful error messages and auditable changes.
  • Strong TypeScript and React skills, backend API experience and a practical understanding of authentication.
Apply: careers@castar.tech
  • Automate deployments, infrastructure changes, backups and recovery drills.
  • Define service objectives and improve incident response across APIs, databases and on-chain dependencies.
  • Experience operating cloud services, containers and relational databases; comfort debugging production incidents.
Apply: careers@castar.tech
  • Investigate delayed transfers, settlement exceptions and discrepancies between internal and partner records.
  • Maintain clear runbooks, escalation paths and handovers for unresolved cases.
  • Experience in fintech or digital-asset operations, confidence with spreadsheets and SQL, and careful written communication.
Apply: careers@castar.tech
  • Review access controls, critical vendors, incident readiness and the use of AI tools around sensitive workflows.
  • Keep risk assessments practical and work with engineers to close the most important gaps.
  • Experience in technology risk or security assurance, with an understanding of European financial-services expectations.
Apply: careers@castar.tech

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