Top Blockchain Jobs in Chicago, IL

Lead and manage multiple B2B clients to deploy payments and supplier enablement solutions. Oversee multi-workstream programs from planning through delivery, perform strategic and analytical work using Mastercard tools, define go-to-market strategies, track metrics, train stakeholders, and drive value realization and adoption of complex technology and transformation programs.

Lead strategy and GTM for agentic commerce on Arc, driving ecosystem partnerships, product alignment, and adoption of USDC and Circle Agent Stack across AI builders, platforms, and enterprises.

Manage a portfolio of ~175 mid-market retail sellers to drive retention, expansion, and satisfaction. Consult with owners to uncover cross-sell and technical solution opportunities across payments, POS, business management, and banking tools. Negotiate contracts, project-manage implementations with cross-functional teams, deliver white-glove service, and advocate seller needs to Product, Engineering, and Operations.

Design and build web and mobile trading applications using React/React Native and .NET; extend WebSocket/REST APIs; process streaming market data; collaborate with product and vendors; troubleshoot urgent issues; apply AI coding assistants responsibly.

Build and operate Coinbase's LLM and agent platform: unified model gateway, AI Hub, secure microVM agent runtime, knowledge base integrations, AI FinOps, observability and evaluation tooling, and production-grade agent deployments with teams across the company.

Architect, build, and operate low-latency market data systems, including feed handlers, normalization, distribution, and exchange connectivity. Design high-throughput infrastructure for real-time trading data, improve reliability and performance, participate in observability, on-call, and incident response, and deliver well-tested features end to end. Partner with engineering, product, and cross-functional stakeholders while leading a lean, high-impact team.

Own infrastructure, deployment, operational tooling, observability, deploy safety, and incident response for latency-sensitive institutional trading systems across cloud and colocated environments. Improve reliability, performance, and developer velocity; reduce single points of failure; establish operational standards and automation; partner with engineering, product, markets, and SRE; and mentor engineers in a 24/7 production environment.

Prepare and file individual and business tax returns involving bitcoin and digital assets. Provide cryptocurrency tax planning, calculate cost basis and gains or losses, maintain compliance records, collaborate with financial and estate planning teams, monitor regulatory changes, and contribute to thought leadership through articles, webinars, and industry events.

Own developer-facing outreach for Trail of Bits: grow community relationships, support and onboard maintainers, convert research into usable tools and docs, publish deep technical content, run workshops and conference presence, and attract upstream contributions while routing practitioner feedback into product and research priorities.

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.

Serve as the Tier 1 support contact for clients using treasury management software. Troubleshoot payment formats, extracts, connectivity, and credential issues; prioritize requests against SLAs; manage RSA and Symantec credentials; collaborate with Customer Success, Account Managers, Solutions, and Development; document escalations; and identify issue trends to improve products and support processes.

Own Coinflow's defensive and offensive security posture: deploy and operate SIEM and SecOps dashboards, run continuous internal pentests, triage CVEs and manage dependency upgrades, integrate SAST/DAST/secret scanning into CI, define secure-by-default patterns, and produce audit-ready evidence for PCI DSS, SOC 2, ISO 27001, and DORA compliance.