Top Tech Jobs & Startup Jobs in Denver & Boulder, CO

Test new web and mobile features, report bugs and usability issues, run manual and automated tests, review requirements and designs, improve QA processes and documentation, and provide UI/UX feedback while collaborating with product, design, and engineering teams.

Lead development and reliability of real-time and batch payment-processing systems across authorization, clearing, settlement, disputes, and card-network integrations. Build scalable, secure, low-latency services using Java, Python, Kotlin, and AWS; improve network peering infrastructure, failover, and capacity. Own initiatives from planning through launch, participate in on-call rotations, reduce technical debt, and drive cross-functional engineering improvements and strategic planning.

Own and scale the US tax function for startups: manage federal and state corporate and personal tax filings, ensure multi-state compliance, drive automation and process improvements, provide light advisory on compensation and entity structuring, and collaborate with accounting while communicating directly with founders.

Lead and grow Omni’s North American Solutions Engineering team. Responsibilities include hiring, coaching, resource planning, technical discovery, demos, proofs of concept, playbook development, performance tracking, and executive customer engagement. The manager will partner with Sales, Product, and Engineering while remaining hands-on in strategic technical evaluations. Candidates need business intelligence or analytics presales experience, people-management experience, strong SQL and modern data stack familiarity, and excellent communication skills.

Design and document mechanical building systems, including HVAC, plumbing, fire protection, and energy modeling. Perform mechanical calculations, thermal simulations, system layouts, and construction administration tasks under experienced project guidance. Develop proficiency with Revit, AutoCAD, TRACE, IES, building codes, and industry standards while supporting engineering distribution and reading construction plans.

The Controller will lead accounting, financial reporting, close processes, budgeting, forecasting, cash-flow management, internal controls, and executive reporting for a growing healthcare organization. The role also oversees healthcare revenue-cycle analysis, reimbursement, denials, collections, payer dynamics, and cash conversion. This leader will partner with operations and executives, improve financial systems and reporting automation, support audits and lender relationships, and provide actionable insight into profitability, liquidity, service-line economics, and strategic investments.

Own and grow Mattermost’s Intelligence Community territory through enterprise SaaS sales, strategic renewals, expansion, and net-new acquisition. Lead complex, multi-million-dollar sales involving security reviews, ATO processes, classified procurement, and executive stakeholders. Build co-sell relationships with cleared Federal Systems Integrators, manage partner-influenced opportunities, maintain Salesforce forecasting discipline, and achieve annual revenue quotas across IC agencies and mission-aligned organizations.

Develop and manage social media content, campaigns, influencer programs, and daily channel activity. Create and edit posts, engage with followers, monitor performance using analytics tools, prepare monthly reports, and recommend strategy improvements. The role also requires staying current with social media trends, applying best practices, and collaborating effectively in a fast-paced environment.

Own and develop Curri’s React Native driver applications across iOS and Android. Lead mobile features from problem definition through deployment and measurement, build offline-first capabilities, background geolocation, and push notifications, and debug native modules and production issues. Collaborate directly with drivers, operations, Product, and Design while contributing to full-stack work and AI-assisted development.

Perform financial and operational analysis, build models and dashboards, translate data into strategic recommendations, support fundraising and M&A workstreams, prepare CEO/BOD-ready materials, execute unit economics, pricing, and ROI projects, and improve firm tools and client delivery.