Top Senior Systems Engineer Jobs in Denver & Boulder, CO

Lead and contribute to the design, integration, deployment, and sustainment of mission-focused systems. Translate stakeholder needs into technical requirements, architectures, interface definitions, deployment patterns, and operational processes. Partner with software engineers and data scientists to integrate applications, data pipelines, infrastructure, and external systems. Support testing, verification, troubleshooting, operational readiness, documentation, and reliability improvements for secure, scalable, data-intensive systems.

Provides senior systems engineering, integration, interoperability, sustainment, testing, troubleshooting, and technical advisory support for MILSATCOM and Protected MILSATCOM capabilities. Analyzes architectures, cryptographic systems, interfaces, data flows, and proposed modifications; develops technical documentation and test assets; supports site surveys, operational evaluations, and field maintenance at CONUS and OCONUS locations. Collaborates with government, military, allied, and technical stakeholders to resolve complex issues and improve operational readiness.

Provides hands-on engineering support for integrating Identity and Credential Access Management requirements into enterprise systems and applications. Conducts technical research, ensures hardware, operating systems, software, and procedures comply with ICAM requirements, and documents specifications, configurations, project plans, testing, and results. Communicates complex technical designs and project status to varied audiences. Requires five years of engineering and ICAM integration experience, active Security+ or equivalent certification, relevant technical certification, and an active DoD Secret clearance.

The MBSE Core Capabilities Engineer supports Model-Based Systems Engineering by advancing tools and infrastructure, collaborating with teams, and improving adoption of MBSE methods.

The MBSE Core Capabilities Engineer leads Tools and Infrastructure for Model-Based Systems Engineering, providing expertise in tools and collaboration across sectors, while supporting MBSE adoption and organizational change management.

The MBSE Core Capabilities Engineer focuses on advancing tools and infrastructure for Model-Based Systems Engineering, requiring expertise in Cameo/MagicDraw and SysML.

Leads spacecraft systems engineering across requirements management, system architecture, concept of operations, integration, verification, and validation. Oversees technical milestone reviews, requirements traceability, risk mitigation, performance tracking, and configuration management while collaborating with cross-functional engineering teams. The role also mentors engineers and ensures compliant, cohesive system solutions throughout the development lifecycle.

Lead systems engineering for mission-critical space systems: define and trace requirements, perform trade studies, integration and verification planning, risk assessments, test support, and lead cross-functional teams to ensure mission readiness and safety.

Lead the definition, validation, and maintenance of system-level requirements for hypersonic systems, overseeing verification and qualification processes.

Lead design and implementation of data architecture and scalable storage solutions, drive AI/GenAI thought leadership, oversee data governance and security, translate business requirements into technical plans, implement FastAPI endpoints, enhance LLMs through prompt engineering, and manage cross-functional teams to deliver advanced data and AI solutions.

Develop and optimize AI and machine learning algorithms, models, and scalable Python systems. Transform raw data into actionable insights, apply machine learning libraries and NLP techniques, improve data quality, and deliver automation solutions for clients. The role also involves complex data analysis, stakeholder collaboration, client relationship management, and navigating ambiguous business challenges.

Lead architecture and implementation of Cloudflare Tunnel systems (client and edge services). Design, code, test, monitor, and scale distributed, secure microservices. Mentor peers, drive roadmap, debug production issues, and collaborate with security, SRE, network engineering, and product teams.

Develops and leads system safety, mission assurance, reliability, and risk-management strategies for rocket motor and propulsion systems. Responsibilities include safety board coordination, hazard classification, risk registers, system-level failure assessments, lifecycle planning, flight-test safety, reliability assessments, and failure investigations. Collaborates with design, testing, manufacturing, mission operations, and program teams, while interfacing with Department of Defense safety review boards.

The role involves designing and leading the development of focal plane subsystems for space applications, overseeing project execution, and collaborating with technical teams.

Leads mission architecture across the systems engineering lifecycle, from concept development and trade studies through implementation and launch. Defines architectures, CONOPS, requirements, and technology roadmaps using MBSE. Supports proposals, business capture, IRAD, customer relationships, and multidisciplinary technical teams across ground, air, and space domains. Mentors systems engineers and communicates complex technical strategies to senior leaders and government or industry customers.

Leads mission architecture from concept through implementation and launch across ground, air, and space domains. Defines system architectures, CONOPS, requirements, and trade studies; applies MBSE and modeling practices; supports proposals, capture, IRAD, and technology roadmaps. Coordinates multidisciplinary teams, mentors systems engineers, and builds customer relationships. Requires active Secret clearance with ability to obtain Top Secret/SCI and five-day on-site work.

Leads mission architecture across the full systems engineering lifecycle, from concept development and trade studies through implementation and launch. Defines CONOPS, system requirements, MBSE models, and technical roadmaps across ground, air, and space domains. Supports proposals, capture efforts, IRAD, customer relationships, and multidisciplinary technical teams. Mentors systems engineers and communicates complex architectures to senior leadership and government or industry customers.

Leads mission architecture across space and defense programs from concept development through implementation and launch. Performs architecture development, trade studies, CONOPS definition, and MBSE modeling while translating customer needs into technical solutions. Supports proposals, capture activities, IRAD, and technology roadmaps; leads multidisciplinary teams, develops customer relationships, and mentors systems engineers. The role requires expertise across ground, air, and space domains and regular onsite work.

Leads mission architecture from concept through implementation and launch across ground, air, and space domains. Defines system architectures, CONOPS, requirements, and trade studies using MBSE. Supports proposals, business capture, IRAD, customer relationships, and technology roadmaps. Leads and mentors multidisciplinary engineering teams while communicating complex technical concepts to senior leaders and government or industry customers.

Leads mission architecture across space and defense programs from concept development through implementation and launch. Defines system architectures, CONOPS, requirements, and technical trade studies; applies MBSE; supports proposals, capture, IRAD, and technology roadmaps; develops customer relationships; and leads, mentors, and coordinates multidisciplinary engineering teams.

Design, build, and operate Cloudflare’s globally distributed cache and reverse-proxy data plane. Responsibilities include improving Pingora-based asynchronous systems, cache performance and correctness, purge and Tiered Cache services, APIs, observability, reliability, and production operations. The role owns features end to end, including design, implementation, testing, staged rollouts, incident response, and cross-team collaboration.

Build and operate secure, scalable multi-cloud infrastructure across AWS, GCP, and networking platforms. Develop self-service tooling, infrastructure-as-code defaults, cloud guardrails, and standardized platform patterns. Lead cross-team infrastructure initiatives, technical investigations, and operational improvements while partnering with security, compute, routing, and other infrastructure teams.

Design and develop scalable, highly available software systems for NinjaOne’s IT Operations platform. Build Java and Kotlin applications, implement enterprise design patterns, optimize systems serving millions of endpoints, and contribute production code. Responsibilities include REST service development, relational database work, client-server messaging, caching, scalability improvements, and quality testing. The role collaborates with engineers to deliver reliable cloud services supporting worldwide operations.

Leads engineering and operational sustainment for a theater-wide air surveillance and communications system. Manages technical baselines, network design, maintenance, compliance, configuration management, fault isolation, performance monitoring, systems integration, modernization, and enterprise architecture evaluations. Supports hardware, software, and network sustainment, briefs military leadership, and assists field service representatives across Europe. Requires an engineering degree, 8+ years of relevant experience, operational air defense systems expertise, and an active Secret clearance.

Design, build, and operate the Linux-based edge appliance runtime and distributed control plane. Implement secure networking dataplanes (IPsec, MASQUE, eBPF), reliable fleet control and remote lifecycle management, telemetry and diagnostics, and drive product-focused technical leadership from architecture through rollout and incident response.