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

Entry-level Business Administrator supporting a seed-stage startup: manage invoices, expenses, vendor relationships, basic bookkeeping, calendars, travel logistics, onboarding and HR admin, organize files/contracts, support fundraising/board logistics, and assist across functions as needed.

Build and ship core product surfaces and internal tooling for an AI-focused enterprise platform. Implement data pipelines, deploy with customers, collect feedback, and iterate quickly while working directly with the founder on architecture and execution.

Design, deploy, and maintain HPC and MLOps infrastructure across cloud and on-prem clusters. Manage schedulers (Slurm/PBS), optimize MPI/CUDA stacks, storage and networking, automate deployments with Python/Bash, instrument systems, and enable AI training/inference pipelines while collaborating with product and support teams.

Lead financial performance, retention, and growth for assigned enterprise accounts. Build executive relationships, drive expansion and stabilization strategies, run QBRs/ABRs, coordinate cross-functional delivery, monitor performance, mitigate risks, and maintain account records in Salesforce to ensure operational excellence and client satisfaction.

Design and implement realistic cloud infrastructure reinforcement-learning environments to evaluate AI models. Create reproducible scenarios covering distributed systems, networking, IAM, queues, durable storage, observability, rolling deployments, and disaster recovery. Build deterministic validation tests, golden reference solutions, and defective variants; document architectures and collaborate with technical leads. Apply DevOps and infrastructure automation for scalable, secure solutions.

Lead development and execution of supply chain strategies to improve efficiency, reduce costs, and boost customer satisfaction. Analyze data, manage inventory, transportation, and warehousing, collaborate with procurement, logistics, and manufacturing, communicate with external partners, and oversee budgets, forecasts, and performance metrics.

Provide technical support and end-to-end case management for GE Vernova Monitoring & Diagnostics devices. Troubleshoot and reproduce issues, coordinate with product teams, recommend repairs/upgrades, maintain records in CRM/ERP/quality tools, own tier 3–4 escalations, produce customer case summaries and metrics, and support after-hours/on-call customer needs.

Lead day-to-day accounting for a multi-entity nonprofit, owning month-end close, reconciliations, restricted fund and grant accounting, cash forecasting, annual audit management, financial reporting, Sage Intacct administration, and supervise accounting staff while partnering with program and advancement teams.

The role indicates a potential for international positions in the future at The ROSTR Group but currently has no openings outside North America.

Lead discovery calls and product demos, understand customer workflows, prepare tailored proposals, manage pipeline and follow-ups, coordinate handoffs to onboarding, and relay customer feedback to product. Focus on converting qualified prospects into signed B2B SaaS customers.