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

Remote unpaid 5–6 month internship producing blog, website, newsletter, and social media content. Researches topics, drafts marketing copy and product descriptions, edits and proofreads for consistency, collaborates on content ideas, and tracks trends to improve engagement while gaining mentorship and portfolio pieces.

Support recruitment, campus outreach, and partnership development. Source, screen, and shortlist candidates; hire campus ambassadors and sales interns; coordinate onboarding, meetings, and payments; maintain partner relationships and track deliverables.

Manage financial transactions and ledgers, reconcile bank accounts, process accounts payable/receivable, generate financial reports, assist with budgeting and forecasting, ensure compliance with tax and financial policies, coordinate with external accountants, and maintain organized financial records.

Serve as primary customer contact across phone, email, and live chat; answer product questions, assist with orders, tracking, returns, and loyalty programs; resolve complaints, document interactions, and provide feedback to improve products and service.

Provide administrative support including scheduling, correspondence, communications handling, filing, travel and expense coordination, event support, office supply management, and cross-departmental assistance to maintain operational efficiency.

Build and own core payment infrastructure and APIs end-to-end using full-stack skills. Design robust asynchronous systems and state machines (queuing, scheduling, webhooks), collaborate with CTO, BD, and customers to shape product, and set engineering standards and best practices as an early hire.

Rolling open application to submit your resume and a note about why the company should hire you. Employer proactively considers exceptional candidates for unspecified roles and will reach out if thereis a potential fit.

Implement and maintain full-stack features for a career-intelligence platform: architect NestJS/Next.js applications, manage PostgreSQL schemas and queries, build responsive UIs with Tailwind, integrate LangChain-powered AI, implement authentication with Clerk, and create end-to-end tests and automation with Puppeteer to ensure launch readiness and performance.

Lead architecture and implementation of scalable web applications using NestJS and Next.js. Build and optimize PostgreSQL schemas and queries, implement responsive UIs with Tailwind CSS, integrate LangChain-driven AI features, manage authentication with Clerk, and create end-to-end tests and automation with Puppeteer to ensure launch readiness and reliable user experiences.

Own a portfolio of mobile apps: define business and product strategy, build and execute roadmaps, lead cross-functional teams, use data to prioritize and measure impact, optimize growth collaboration, and communicate launches and metrics.

Manage and optimize accounting processes, controls, and financial reporting. Oversee affiliate payments, audits, UI, deferred revenue, month-end close, tax compliance, registered agents, AP, credit card reconciliation, lender reporting, and lead ad-hoc projects while collaborating with accounting staff and external stakeholders.

Lead design, deployment, and operation of Caldera's blockchain infrastructure. Build and expand DevOps pipelines, manage Kubernetes/AWS deployments, implement IaC (Terraform/Helm), enhance observability, optimize performance, and maintain infrastructure security for production rollup chains.

Remote, unpaid 6-month UI/UX internship (20 hrs/week) supporting the Marketing team: create wireframes, prototypes, high-fidelity designs, conduct user research and usability testing, maintain design systems, collaborate cross-functionally, iterate based on feedback, and support product strategy while meeting deadlines.

Remote unpaid 20-hr/week graphic design internship supporting marketing: create social, presentation, web, and multimedia assets; maintain brand consistency; iterate on designs; collaborate with teams; learn design and digital marketing best practices.

Support marketing analytics by analyzing digital channel performance, building and maintaining KPI dashboards, ensuring data accuracy, and collaborating with cross-functional teams to turn insights into actionable recommendations.

Develop and maintain features for a React Native VoIP mobile app, integrate native Android/iOS modules when needed, collaborate with backend engineers on APIs and real-time communications, optimize performance, debug production issues, and contribute technical insights to the product roadmap.

Lead and manage full-cycle recruitment across functions and levels. Partner with hiring managers to define hiring strategies, develop sourcing approaches, mentor junior recruiters, optimize recruitment metrics, champion employer branding and candidate experience, collaborate with HR on onboarding and workforce planning, and monitor talent market trends.

Manage enrollment and support for strategic partners by conducting outreach, creating go-to-market assets, providing training, coordinating events, troubleshooting product issues, and collaborating cross-functionally to grow partnerships and improve partner experience.