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

Lead design and implementation of backend services and APIs for payments, billing, settlements, ledgers, and reconciliation. Drive architecture for highly available, auditable financial platforms, integrate with payment processors and banking partners, ensure transactional integrity, observability, and compliance. Deliver end-to-end initiatives, mentor engineers, and operate mission-critical systems with strong emphasis on reliability, security, and scalability.

Own the Platform product end-to-end: prioritize and manage roadmap for infrastructure, security, AI infra, data/compliance, and internal tooling. Collaborate closely with engineers and designers to frame problems, run research, define requirements, and measure post-release impact. Operate in an async, documentation-first culture and influence stakeholders to drive technical decisions and ship complex systems.

As a Tax Intern, you'll provide tax consulting, prepare tax returns, write alerts on tax developments, research issues, and participate in training.

Serve as tax lead for construction clients offering tax review, planning, and compliance. Manage client relationships, mentor staff, lead prospecting, and oversee engagement financials and risk.

Freelance local writer produces engaging articles about kid-friendly activities, reviews playgrounds, cafes, and events, takes high-quality photos, and optionally films short social videos. Work is remote, flexible, freelance (1099), focused on Boston-area family content and authentic local tips.

This role involves driving business development and revenue growth in Aerospace & Defense, managing customer relationships, and strategic planning.

Sell commercial, truck, and OTR tires and services to commercial fleets. Conduct fleet surveys, tire analysis, mileage tracking, and reporting. Meet sales quotas, solicit new accounts, resolve customer concerns, protect company assets, maintain safety and vehicle presentation, and perform frequent physical tasks (lifting, bending) in varied environments.

Commission-only outside sales role selling a quantitative AI trading platform to active retail and professional traders. Prospect at events, run live demos, host educational meetups, pursue B2B outreach to prop shops and small funds, and manage a sales pipeline to grow recurring subscriber revenue.

Join Trexquant as a Global Alpha Researcher to develop trading signals, implement research, and apply machine learning for alpha discovery.

Develop and maintain backend services and RESTful APIs using .NET Core/.NET 5+, collaborate with React frontend teams, write unit and integration tests, query SQL Server/PostgreSQL databases, participate in code reviews and agile processes, and use AI-assisted development tools to improve productivity.