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

Register your interest for future opportunities at Harrison Leisure UK. Join a growing team that values passion and guest experiences.

Sell and negotiate brand partnerships for social media creators: convert inbound/outbound leads, build and maintain brand and creator relationships, scout clients, craft pitches and partnership packages, assist campaign execution, and deliver growth strategies and ROI measurement for influencers.

Manage and deepen relationships with top creators and brand partners, coordinate sponsorship fulfillment, refine ad scripts, optimize internal workflows, anticipate creator needs, and collaborate with talent management, partnerships, compliance, and marketing to drive creator satisfaction, retention, and growth.

Volunteer short-form video editor producing Instagram Reels and TikToks from raw event footage. Add captions, nasheeds, effects, and apply pacing and hooks to drive engagement aligned with Hasana’s mission.

Lead Hasana's marketing and communications as a volunteer: manage social media and digital communications, create content (posts, flyers), support event and fundraising marketing, track engagement and refine strategies, and maintain consistent, professional messaging.

Volunteer administrative assistant to support organizational workflows: coordinate across teams, prepare presentations and reports, support internal communications, and assist with ad-hoc support tasks to advance the nonprofit's mission.

Manage and optimize ERP environments and multi-module integrations, evaluate and apply software releases, perform advanced SQL/database troubleshooting, identify system improvements, and serve as Salesforce Data Cloud admin handling data integration, modeling, quality, governance, and deployments while training and supporting users.

Lead design, implementation, and adoption of Dynamics 365 Finance & Operations globally. Translate business needs into D365 solutions, manage service providers, mentor users, oversee customizations/integrations/data management, create test scripts and documentation, and deliver training while ensuring standardized processes and stakeholder alignment.

Implement, configure, and manage Saviynt IGA solutions including workflows, access policies, RBAC/ABAC, identity lifecycle (onboarding/offboarding), integrations via REST/SOAP, compliance, SSO/MFA/auth protocols, cloud integrations, monitoring, troubleshooting, and documentation while collaborating with security teams.

Design and deliver enterprise-grade Java-based solutions and architectures. Produce HLD/LLD, guide development teams, define APIs/integration, enforce security and performance best practices, and collaborate with stakeholders and DevOps on CI/CD and deployments.

Design, implement, and operate CI/CD pipelines for mobile and backend services; maintain build/test/release processes with quality gates and artifact management; configure non-production environments; support release preparation and deployment coordination; integrate monitoring/logging and improve automation, performance, and reliability of delivery pipelines.

Plan, execute and automate functional, regression and integration tests for mobile (iOS/Android) and backend services. Create and maintain test plans, cases and data; log and track defects; support UAT, performance and stability checks; collaborate with developers, DevOps and architects; integrate automated tests into CI pipelines and validate release readiness across environments and physical devices.

Senior backend engineer responsible for designing and implementing new features, scaling and optimizing the platform, improving Postgres and Elasticsearch performance, fine-tuning LLMs, and making architectural decisions. Collaborate with engineering team, take ownership of features, write performant, maintainable code, and help shape product and infrastructure for data-intensive applications (NLP, search, indexing).

Design and implement front-end features, build high-quality user interfaces, take ownership of product and architecture decisions, collaborate with engineering team, and deliver performant, user-focused solutions.

Own end-to-end client relationships for a book of B2B SaaS customers: drive adoption, engagement, retention, and expansion of AI-powered contract drafting tools. Lead onboarding, training, large-scale rollouts, and translate customer feedback into product improvements while designing scalable CS processes and tracking health metrics to demonstrate value.

Own end-to-end UI/UX for Headstarter's consumer and B2B products, create user flows, wireframes, high-fidelity designs and a cohesive design system, collaborate with founders and engineers, iterate on feedback and data to drive product and hiring outcomes.

Founding full‑stack engineer responsible for 0-to-1 product definition, building frontend and backend systems, wrangling agentic AI and ML infrastructure, and leading end-to-end implementation to deliver rapid, high-quality iterations to customers.

Build end-to-end user features under senior guidance: implement REST endpoints in Node.js/TypeScript, microservices in Python, maintain PostgreSQL schemas, process background jobs with QStash/Upstash, deploy to Cloudflare Workers/Pages/R2, write tests, and collaborate with product/design on React UI components.

Build and maintain end-to-end features across backend (Node.js/TypeScript, Python) and frontend (React/TypeScript). Model Postgres schemas, integrate queues (QStash/Upstash), deploy on Cloudflare edge, write tests, enforce CI/CD, and harden systems for security and performance in regulated environments.

Lead platform architecture, development, and reliability for an AI-driven molecular discovery product. Build agentic workflows, full-stack UI features, integrate Console/Builder/Solutions apps, and implement API integrations with sequence and assay providers to support model training, deployment, and researcher workflows.

Contract 2D Art Generalist creating concept art, character illustrations, and game art. Collaborate with the team to develop a cohesive visual direction, contribute art assets to the project, and iterate based on feedback. Work varies week to week; potential for additional future work.

Define and own the game's visual style end-to-end: create art samples, moodboards, key art, and in-style assets. Produce illustrations and concept art, mentor junior artists, collaborate with the team and community, and work with generative AI tools as an augmenting technology. Contract-to-hire starting with paid trial projects.