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

Hands-on mechanical engineering internship focused on HVAC and MEP building systems. Interns assist design teams with ductwork sizing and layout, perform basic engineering calculations, support documentation and coordination, attend site visits, and gain experience using BIM tools like Revit and AutoCAD throughout project lifecycles.

Build and maintain responsive, high-performance user-facing React/Next.js applications for privacy-focused web3 products. Collaborate with backend engineers, identify and fix performance bottlenecks, participate across the product lifecycle, write tested production-quality code, and iterate quickly on UX and developer-facing frameworks.

Embed onsite as the primary technical owner for a strategic public-safety account: design, build, deploy, and iterate AI-enabled agents, workflows, integrations, and data pipelines on Axon’s platform. Drive adoption, measure mission outcomes, troubleshoot cross-team issues, and translate field insights into reusable playbooks while maintaining CJIS and security compliance.

Provide executive-level administrative and guest-relations support to the General Manager, managing correspondence, guest communications, packages, scheduling, office operations, financial/admin processing, event support, and special projects while maintaining confidentiality and high service standards.

Serve as the primary Premier Support contact for enterprise clients, manage escalations and high-priority cases, coordinate with Engineering/Product, run account KPIs and QBRs, oversee support-led projects and outage communications, ensure SLA adherence, support developers using Blend RESTful APIs, and drive customer retention and satisfaction.

Own and evolve Buffer's front-end design system and component library for marketing pages. Build performant, accessible, animated React/TypeScript experiences on buffer.com, collaborate with designers and marketers, audit and improve performance and accessibility, and mentor peers on front-end architecture and standards.

Lead end-to-end delivery for a high-volume creative video program across 20+ clients: onboard clients, manage milestone calendars, coordinate creative production and finance checkpoints, monitor client health, and ensure on-time, in-budget delivery and handoffs to client service.

Lead customer implementations and engagements for healthcare clients, establishing implementation strategy, coordinating cross-functional teams, managing timelines, risks, and change management. Build trusted stakeholder relationships, measure and communicate success against criteria, drive post-go-live optimization, and improve implementation methodologies to ensure customers realize measurable business outcomes.

Lead AI Engineer defines AI strategy, architecture, and standards; makes build vs. buy decisions; architects scalable, reliable LLM/GenAI systems; establishes LLMOps, evaluation, guardrails, and observability; coordinates cross-functional alignment with product and engineering; and champions AI-assisted developer tooling and responsible AI practices.

Design and deliver training and demos for manufactured housing owners and operators using ManageAmerica SaaS. Support onboarding, drive adoption, create training materials, gather customer feedback, and partner with Sales, Implementation, Product, and Customer Success to improve workflows and outcomes.