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

Develop, integrate, and test spacecraft flight software across the full lifecycle. Implement and upgrade cFS-based applications, perform unit-to-platform verification in simulation and HIL/FlatSat environments, support integration with hardware and payloads, and participate in anomaly resolution, mission operations support, and proposal activities.

Perform and lead quantitative groundwater flow and contaminant transport modeling for remediation, permitting, and water resources projects. Develop model inputs, run numerical models, reduce field data, create geospatial and conceptual models, perform uncertainty and parameter estimation, produce technical reports and presentations, and contribute to digital solution development and client support.

Manage QA for QuickCode by testing releases, validating product accuracy, troubleshooting with Success and Support, documenting tests, and providing feedback to Product and Engineering to improve clinical billing workflows and user experience.

Commission-based Business Development Representative who generates leads via a proprietary tech platform, builds client relationships, delivers sales presentations, negotiates and closes deals, maintains CRM records, and collaborates with marketing and product teams to meet sales targets.

Build relationships with independent veterinary professionals, execute high-volume outreach, manage a HubSpot pipeline, run local recruitment events, and match vets to hospital shifts to drive regional activation and engagement.

Supervises and supports a Payment Operations team handling wire and digital payments, ensuring compliance, training staff, maintaining procedures, monitoring risk, assisting with transactions and audits, and acting as backup to other supervisors. Manages staffing, sets goals, escalates issues, and participates in projects to maintain efficient, accurate payment operations.

Develop and maintain web and mobile features using React/React Native; build scalable backend services in C#, TypeScript, and Ruby on Rails; work with AWS (ECS/EKS/Lambda), Terraform, event-driven systems (Debezium, Kafka, SNS/NServiceBus), and Postgres/Salesforce integration. Collaborate with product and design, follow CI/CD and testing best practices, and contribute to system design and continuous improvement.

Lead global IT deployment and asset lifecycle program: own Zendesk queue escalations, manage regional vendors and deployment teams, ensure inventory data integrity in Oomnitza, track SLAs and daily operational metrics, standardize processes across global hubs, and optimize inventory utilization to reduce procurement spend.

Build and maintain large commercial datasets and predictive/forecasting models (BigQuery, dbt, SQL, Python). Design causal and experimental analyses to measure promotion impact and price elasticity. Partner with commercial, finance, and executive stakeholders to inform pricing, distribution, and investment. Deploy LLMs and AI agents to classify unstructured data and build tools that democratize data access.

The Senior Software Engineer will design, develop, and maintain scalable backend systems, optimize performance, and collaborate with other teams while mentoring junior engineers.