Top Blockchain Jobs in Denver & Boulder, CO

Own application security for backend services, APIs, cloud infrastructure, and edge systems handling financial transactions. Responsibilities include validating red-team findings, assigning severity, hardening services, implementing WAF and rate-limiting defenses, creating automated security configuration checks, expanding pull-request security gates, reviewing architectures, managing attack-surface coverage, and evaluating security tools. The role also partners with engineers and Security Operations to drive effective remediation.

Conduct application security assessments, discover and validate vulnerabilities, analyze complex codebases, build custom security tooling, perform threat modeling and architecture reviews, and deliver actionable findings to clients. Independently own assessment workstreams, develop proof-of-concept exploits, communicate technical conclusions, review team work, and contribute to security research, open-source tools, and technical writing.

Lead go-to-market strategy for Property & Casualty Insurance secular shift across North America. Engage issuers and distribution partners, build and manage sales pipeline, commercialize solutions, support negotiations, cross-sell with account teams, and drive SMB growth strategies. Coordinate Finance, Sales, Marketing, Product, and Delivery to execute initiatives, use SFDC to track pipeline, and create sales enablement materials to drive adoption of modern card-based payment solutions.

Own the full-cycle mid-market sales process for Cash App Pay and Afterpay, from prospecting and qualification through negotiation, contracting, launch, and handoff. Build merchant relationships, develop account plans and business cases, negotiate commercial terms, coordinate cross-functional deal teams, maintain Salesforce pipeline data and forecasts, deliver revenue targets, and provide market feedback to product and go-to-market teams.

Manage enterprise KYC due diligence policy and strategy across Block’s business lines. Develop and maintain KYC standards, assess regulatory changes, guide implementation, define AI/ML risk-segmentation and identity-verification controls, monitor program performance, advise stakeholders, support audits and examinations, and remediate compliance risks including model bias, drift, false positives, false negatives, and explainability gaps.

Build and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, test reliability, observability, and engineering productivity at scale. Own services from architecture through production, including SLOs and on-call operations. Lead cross-functional technical projects, partner with engineering teams, mentor engineers, and shape platform strategy.

Provide tax preparation, planning, and advisory services for individuals and businesses holding bitcoin and digital assets. Prepare and file tax returns, calculate cost basis and gains/losses, advise on mining/staking/airdrop income, collaborate with advisors and estate planners, maintain compliance documentation, and contribute thought leadership through articles and webinars.

Design, implement, test, and deploy secure Solidity smart contracts across Ethereum and EVM networks. Own smart contract projects, contribute to Aave protocol initiatives and infrastructure, investigate vulnerabilities, troubleshoot production issues, review code, and collaborate on DeFi features including lending, vaults, stablecoins, and protocol integrations.

Owns the end-to-end creation of paid performance video for Kraken Consumer across launches, campaigns, promotions, and ongoing activity. Responsibilities include concepting, producing, editing, AI-assisted generation, platform-specific adaptation, localization, testing, and regulatory approval. The role interprets creative performance data to improve future concepts and cuts, supports paid static creative, maintains high production standards, and collaborates with marketing, compliance, product, and regional teams.

Support digital marketing and community efforts in MENA: gather and manage data for content and campaigns, handle community queries on Telegram/Discord, use campaign portals (Task On, Galaxy, Zealy), conduct data research, assist lead generation, monitor campaign metrics, and follow the content plan to improve engagement and ROI.

Provide high-level support to the CEO and founder's office by managing complex calendars, coordinating travel, serving as primary stakeholder contact, preparing reports and presentations, implementing marketing and community growth strategies, handling confidential information, and improving internal communications and collaboration.

Lead digital marketing and branding for a Web3 RWA DEX: develop campaigns, manage SEO/SMO and analytics, optimize social channels and ads, run content/backlink strategies, host community events, drive inbound lead generation and partnerships, and ensure luxury-market positioning and event presence (especially MENA).