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

Architect, build, and maintain scalable full‑stack applications using React, TypeScript, Node.js, and AWS. Own features end-to-end, optimize performance and usability, collaborate with founders, and use AI tools to accelerate development in a fast-paced startup.

Lead onboarding and product discovery for utility customers: run and systematize onboarding, translate customer workflows into product requirements, prioritize features, write MRDs/PRDs/TRDs, coordinate cross-functional delivery, and create repeatable processes to turn pilots into scalable deployments.

Sell and onboard Part 135 charter operators in the Northeast, owning full sales cycle from prospecting to implementation, managing pipeline and forecasts, driving new client acquisition and expansion, and supporting adoption and product feedback.

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.

As a founding full-stack engineer, design, build, and deploy core backend services, oracle/watchtower infrastructure, and borrower-facing applications. Integrate Bitcoin transactions, PSBTs, and Discreet Log Contracts, manage SQL/NoSQL databases, contribute to architecture decisions, and wear multiple hats in a fast-paced, early-stage environment.

Lead development, tuning, and optimization of incrementality and attribution models for podcast advertising. Build, test, and refine statistical models on large datasets, collaborate with product and data teams, translate findings into actionable insights, and improve measurement methodologies to quantify ad impact.

Write and edit compelling English voice scripts for diverse projects; collaborate with stakeholders, adapt tone for audiences and platforms, and manage multiple projects independently on a contract, remote basis.

Own the entire post-sale client lifecycle: onboard customers, review AI-generated compliance documents, deliver updates from regulatory monitoring, run upsell campaigns, retain and expand accounts, and feed product feedback to the founder. Build processes and define client success at an early-stage SaaS startup.

Sell Needletails solutions to dental offices across the U.S.: develop strategic sales plans, generate demand, build client relationships, coordinate with internal teams, and represent the company at industry events.

SynX Therapeutics, a biotech start-up, invites speculative applications for future roles related to drug discovery and engineered biology.