Top Blockchain Jobs in Los Angeles, CA

Lead Circle's global fraud risk program by defining strategy, frameworks, controls, and analytics. Oversee investigations, regulatory reporting, detection systems, KPIs, and cross-functional embedding of fraud risk management across products and jurisdictions.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

Lead Product Designer for Circle's Identity Team to design platform-level systems like Authentication, Roles & Permissions, and Billing. Audit fragmented workflows, create cohesive, scalable UI systems, and craft high-fidelity visual design while balancing security flows (MFA, SSO) and developer/designer consumable components.

Field-driven, full-cycle sales role responsible for building pipeline, conducting in-person demos, closing deals, and establishing Square as the go-to solution in the territory. Drive 50–60 targeted weekly visits, develop partnerships, manage Salesforce pipeline, and exceed quota while specializing in restaurants, retail, and services verticals.

Lead the technical design and delivery of banking features at Cash App, collaborating across teams, driving architecture improvements, and mentoring engineers.

Manage a portfolio of mid-market sellers, expanding use cases and technical solutions, negotiating contracts, and providing exceptional client service.

Design, build, and operate production ML decision systems to detect and prevent payment fraud, account takeover, identity abuse, merchant/marketplace risk, scams, and other adversarial activity. Own end-to-end production lifecycle: data contracts, low-latency inference, batch scoring, feature quality, deployment, monitoring, incident response, rollback, and feedback loops. Develop AI-assisted workflows and reusable decision capabilities while partnering with modelers, product, compliance, and operations.

Design, build, and operate production ML signal systems—ranking, retrieval, recommendations, propensity, and next-best-action—covering feature/candidate generation, serving, experimentation, monitoring, and feedback. Define signal contracts (freshness, provenance, confidence), evaluate long-term impact (trust, fairness, compliance), and partner across product, data, and risk teams to deliver reusable customer-intelligence capabilities.

As a Security Engineer, you will conduct security assessments, develop security tools, perform architecture reviews, and collaborate on advanced security research.

Design, build, and operate core developer-infrastructure services (CI, builds, deployment orchestration, test infra). Own components end-to-end, improve build/CI/deploy/test metrics, participate in on-call rotation, write observable production-ready code, collaborate with engineering teams, and contribute to technical design and knowledge sharing.

The Engineering Manager leads a team in delivering reliable software solutions, blending technical contributions with team leadership, managing projects, and improving processes.

Design, build, test, and deploy smart contracts and decentralized applications. Maintain blockchain integrations and backend services, optimize for security and gas efficiency, contribute to architecture and technical strategy, conduct code reviews, mentor junior engineers, and collaborate with product, frontend, and security teams.

Promote BeBetter Shop's Booster packages within the crypto, SaaS, and FinTech industries, leveraging established connections for sales.

The Finance Manager will oversee finance workstreams, manage crypto and fiat operations, integrate financial systems, and ensure compliance. Responsibilities include financial analysis, reporting, and process optimization, collaborating across teams.

As a Senior Financial Analyst, you'll lead financial strategy, build financial models, automate workflows, and partner with business leaders to drive decision-making.