Top Senior Level Software Engineer Jobs in CO

Leads a cross-functional engineering and science team supporting U.S. Space Force software evaluation and integration. Responsibilities include evaluating physics-based concepts, designing and testing full-stack software, implementing end-to-end solutions, reviewing and writing code, translating RF and space weather requirements, coordinating engineering disciplines, mentoring personnel, and communicating technical concepts to diverse stakeholders.

Develop and support software for satellite radiometric calibration, imaging sensor commissioning, and space operations. Responsibilities include service architecture, reliability monitoring, CI/CD integration, automated testing, operational troubleshooting, cloud-based distributed systems design, and collaboration with scientists and software teams. The role supports production and test environments, investigates data anomalies, and advances calibration operations for satellite imagery and geospatial data products.

Build production-grade tools, services, integrations, data pipelines, and automations that support sales and growth teams. Identify account signals, prioritize opportunities, connect Salesforce and external data systems, and improve customer acquisition workflows. Partner with Sales and Growth to translate business needs into scalable technical solutions, rapidly test experiments, and maintain reliable applications with strong architectural, security, and quality practices.

Build production-grade tools, services, automations, data pipelines, and integrations that support Sales and Growth. Identify account signals, prioritize opportunities, improve GTM workflows, and rapidly prototype experiments. Partner with sales and growth leaders to translate business needs into scalable technical solutions while maintaining strong architecture, security, reliability, and quality standards.

Design, build, and support Amazon Connect contact flows, serverless Java/Python microservices, and React agent workspaces. Integrate LLM-powered agent assistance (Bedrock/RAG), secure REST APIs, and implement monitoring and reliability for enterprise contact center solutions.

Senior Database Administrator responsible for designing, implementing, monitoring, tuning, securing, and maintaining Oracle, cloud, and NoSQL databases. The role manages high availability, backup and recovery, disaster recovery, capacity planning, performance optimization, and 24x7 production support. It also requires collaboration with development teams, documentation, project delivery, troubleshooting, and mentoring junior database administrators. The position supports Oracle, MongoDB, Cassandra, Amazon DocumentDB, and AWS RDS environments.

Develop low-level, high-performance instrumentation within CICS and z/OS using HLASM. Design production features for mission-critical mainframe environments, diagnose complex system behavior through dumps and traces, analyze performance bottlenecks, and collaborate with an experienced engineering team. The role requires deep z/OS and CICS internals expertise, systems programming knowledge, and proficiency with JCL, SDSF, and USS.

Lead software engineering for the Patient Onboarding team, building and improving registration, insurance verification, and care-access workflows. Write full-stack production code, lead complex cross-team initiatives, shape technical direction, improve engineering foundations, and support modern AI-enabled development practices. Collaborate with Product, Design, Analytics, and Engineering to improve patient conversion and system reliability.

Build and maintain scalable e-commerce and marketplace features across Node.js, React, MySQL, and MongoDB. Own complex features end to end, design backend services and APIs, integrate PunchOut procurement systems, improve platform security and reliability, conduct code reviews, and mentor engineers. The role requires strong full-stack JavaScript and TypeScript expertise, e-commerce domain experience, and the ability to work autonomously on high-volume transactional software.

Designs, builds, and scales backend services and integrations for payments, billing, identity, and partner connectivity. Sets technical vision and architecture for distributed systems, leads cross-team delivery, manages production rollouts, builds fault-tolerant services and data pipelines, and mentors engineers. The role partners with product, design, and engineering teams to deliver frequent, reliable improvements for Flex’s rent payment platform.

Design and build backend services and APIs for identity resolution and platform integrations. Optimize event-driven pipelines processing billions of signals, deploy cloud-native services on AWS EKS and Kubernetes, and ensure reliability, observability, and scalability. Collaborate with engineering, product, and data teams to deliver identity solutions while mentoring junior engineers. The role requires expertise in backend or data engineering, distributed systems, streaming technologies, cloud deployment, data modeling, and high-throughput databases.

Leads the architecture, design, development, integration, verification, and testing of complex software and multidisciplinary space systems. Responsibilities include managing system requirements and architectures, defining operational concepts, leading milestone reviews, mitigating technical risks, improving engineering processes, and mentoring software engineers. The role requires advanced software engineering expertise, scalable system design, algorithmic knowledge, technical leadership, and an active Top Secret clearance.