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

Lead and execute tax credit and clean energy finance transactions, overseeing negotiations, due diligence, and client relationships. Develop playbooks and compliance software features, represent the firm publicly, and collaborate on new financial products to scale clean energy investment.

Join as the founding full-stack engineer to extend a TypeScript React/Next.js prototype, design product features, integrate AI/OCR, write tests and infrastructure, talk to users, and iterate quickly to drive growth.

Build and maintain clean, user-friendly React Native screens and components for iOS and Android. Implement UI/UX from provided designs, integrate APIs, collaborate with backend and AI teams, fix bugs, and keep the codebase organized.

Research Fellows will validate AI-generated paper reproductions, simulations, and results; map research taxonomies; define standards for high-quality AI-assisted science; and create benchmark tasks and evaluations for frontier AI models. Fellows will contribute to a publicly released benchmark paper and open evaluation set as lead or first authors. The contract offers flexible, remote global work for current STEM PhD students or postdocs with published research and hands-on AI agent experience.

Lead organic social strategy and execution across eight D2C consumer brands. Manage channel strategies, content calendars, audience engagement, UGC sourcing, customer storytelling, performance reporting, optimization, and AI-enabled workflows. Partner with Content, Community, Growth, Customer Experience, and Marketing teams while mentoring social media coordinators and maintaining distinct brand voices across Instagram, Facebook, TikTok, YouTube, and other platforms.

Lead top-line revenue growth through rapid Go-To-Market experimentation across paid channels, viral and AI-driven growth tactics. Own Google and Facebook paid campaigns, collaborate with sales, deploy sales and AI tools, analyze performance, and iterate quickly in a fast-paced startup environment.

Design and build scalable backend systems, data pipelines, and cloud infrastructure. Own CI/CD, containerization, databases, and reliability; collaborate with tech leads to deliver secure, production-grade solutions for startups in a fully remote environment.

Review, label, and QA datasets for AI/ML training; maintain trackers, databases, and dashboards; follow annotation guidelines and SOPs; prepare and clean data; document processes; collaborate to resolve data queries while ensuring confidentiality and timely delivery.

Sell MixRank's DaaS products via consultative sales to enterprise clients. Hit $750K ARR, build a 3x pipeline, manage complex multi-stakeholder deals, prospect independently, maintain CRM, collaborate with engineering, customer success and analysts, create sales enablement materials, and help scale the GTM team.

Designs and leads recruitment strategy and talent acquisition programs, improving sourcing, hiring processes, candidate experience, and workforce outcomes. Builds recruitment analytics frameworks, dashboards, and monthly reporting around time-to-fill, cost-per-hire, quality of hire, and offer acceptance. Partners with Talent Acquisition, HR leaders, hiring managers, candidates, and community organizations while developing social media branding and optimizing sourcing-channel ROI.