Top Principal Engineer Jobs in Denver & Boulder, CO

Develops embedded satellite software and test infrastructure for command and control, mission planning, and data analysis. Performs the full software lifecycle, including requirements, architecture, design, coding, testing, integration, documentation, and support. The role requires experience with software development, cloud and web technologies, object-oriented design, UML modeling, configuration management, and formal development practices. Work is primarily on-site and requires an active TS/SCI clearance.

Develop and maintain embedded satellite software and test infrastructure for command and control, mission planning, and data analysis. Perform full software lifecycle activities, including requirements, architecture, design, coding, testing, integration, documentation, and support. The role requires expertise in modern software technologies, formal development practices, UML modeling, cloud and web development, and an active TS/SCI clearance. Work is fully on-site with potential travel between company and other facilities.

Develop and maintain embedded satellite software and test infrastructure for command and control, mission planning, and data analysis. Perform full software lifecycle activities, including requirements, architecture, design, coding, testing, integration, documentation, and support. Work with cloud, web, database, modeling, simulation, and DevSecOps technologies while collaborating across teams in an on-site environment.

Leads SSD system design and architecture from concept through high-volume manufacturing. Defines system requirements, drives architecture reviews, resolves complex firmware-hardware issues, and develops characterization strategies for performance, power, thermal behavior, and reliability. Provides technical leadership across global engineering teams, mentors engineers, influences product roadmaps, and advances quality, manufacturability, validation, and customer readiness through data-driven debugging and AI-enabled improvements.

Principal Engineer responsible for defining the long-term architecture and modernization strategy for GitLab’s Fulfillment platform. The role drives technical direction across entitlements, licensing, provisioning, seat management, usage visibility, and cost management. Responsibilities include hands-on distributed systems engineering, migrations, performance and reliability improvements, cross-team influence, AI-assisted engineering adoption, and mentoring senior technical staff.

Leads technical strategy, architecture, and engineering execution across Atlassian’s Rovo Chat, Search, Growth, Apps, and Clients experiences. The role drives scalable AI foundations, Search and Chat convergence, personalization, experimentation, reliability, security, and operational excellence. It involves leading cross-organizational initiatives, partnering with product, design, data science, and machine learning teams, mentoring senior engineers, and shaping multi-year technical roadmaps for customer-facing applications.

The manager will lead the NVMQRA team, ensuring product quality and reliability of non-volatile memory products through testing, collaboration, and continuous improvement.

Leads sensor, optical systems, materials science, and nonlinear optics efforts across R&D and production programs. Responsibilities include GmAPD detector calibration and testing, optical coating and radiation-hardening development, sensor concept development, materials analysis, prototyping, technical roadmaps, proposal support, customer interaction, and technical leadership. The role requires collaboration across engineering and business organizations and work in office, laboratory, production, and cleanroom environments.

Lead design, requirements, analysis, integration, and test of satellite ground systems. Develop system architecture, decompose requirements, create ICDs/SEMP artifacts, support verification activities and program reviews, perform trade studies and risk assessments, and mentor junior staff while interfacing with customers and stakeholders.

Lead design, analysis, integration, test, and on-orbit support of guidance, navigation, and control systems for space programs. Define and refine GN&C requirements, produce engineering analyses and documentation, support proposals and concept trades, develop and test hardware/software, present technical results, and collaborate across teams from concept through flight.

Lead systems engineering for satellite ground systems: design, requirements decomposition, architecture, integration, verification, and test. Guide teams, develop ICDs/SEMP/CDRLs, support reviews (SRR/PDR/CDR), conduct trade studies, and interface with customers and program stakeholders. Provide technical leadership and oversight across lifecycle, ensuring verification, validation, and operational readiness.

Leads the development, analysis, integration, testing, and flight support of guidance, navigation, and control systems for space programs. Responsibilities include defining requirements, conducting attitude, orbit, trajectory, agility, stability, and maneuver analyses, supporting hardware and software testing, documenting system designs, and presenting technical approaches. The role supports programs from proposal and concept development through procurement, integration, flight, and on-orbit operations while leading teams and collaborating across functions.

Lead systems engineering for satellite ground systems: design, requirements decomposition, architecture, ICDs, verification/validation, integration, and test. Support reviews (SRR/PDR/CDR), trade studies, risk assessments, customer briefings, and mentor junior staff while working on-site full time.

Leads RF payload system and board-level design for space-based sensor systems. Manages suppliers and subcontractors, develops digital RF receivers and processors, advances wideband receiver and beamforming technologies, supports architecture and internal R&D, and leads major design and readiness reviews. Requires extensive digital receiver, RF signal chain, phased-array, and subcontract management expertise, along with an active TS/SCI clearance.

Leads embedded software development for satellite, airborne, and ground systems. Responsibilities include software requirements, architecture, design, coding, testing, integration, documentation, support, and test infrastructure development. The role requires expertise in C/C++, Rust, Python, Embedded Linux, software lifecycle practices, Linux deployment, object-oriented design, UML, and configuration management. Preferred experience includes technical leadership, Agile, simulation, Yocto, DevSecOps, serialization, and hardware-in-the-loop testing.

Leads embedded software development for satellite, airborne, and ground systems. Responsibilities include software requirements, architecture, design, coding, testing, integration, documentation, support, and test infrastructure development. The role requires expertise in embedded Linux and languages such as C/C++, Rust, and Python, along with system interfaces, formal development practices, and software deployment. It is fully on-site and may support classified defense programs requiring eligibility for TS/SCI clearance.

Design and develop FPGA-based digital systems and reusable IP for defense-oriented electronic systems. Responsibilities include digital system partitioning, SoC architectures, signal processing, communication interfaces, circuit design, and chip- and board-level testing. The role also involves requirements flow-down, technical documentation, cross-functional collaboration, and work on R&D, proof-of-concept, and production programs in an onsite environment.

Leads the architecture and development of advanced mission modeling and simulation software. Defines end-to-end simulation architectures spanning physical phenomenology, signal propagation, sensors, onboard processing, telemetry, commanding, and mission data products. Translates mission requirements and physical behavior into models, software components, interfaces, and data flows; guides technical trades, development, integration, verification, and validation. Collaborates across physics, payload, mission systems, and software teams while supporting design reviews and technical presentations.

Leads the architecture and development of integrated mission modeling and simulation software. Defines end-to-end simulation architecture spanning physical phenomenology, signal propagation, sensors, onboard processing, telemetry, commanding, and mission data products. Translates mission requirements and physical behaviors into models, software components, interfaces, and data flows; conducts architecture trades; directs developers; and supports integration, verification, validation, testing, and major program reviews.

Leads embedded software development for satellite, airborne, and ground systems. Responsibilities include software requirements, architecture, design, coding, testing, integration, documentation, lifecycle support, and test infrastructure development. The role involves embedded Linux, C/C++, Rust, Python, CI/CD, FPGA interfaces, messaging systems, and formal software development practices. It also requires collaboration across engineering organizations and may involve technical leadership, simulation, DevSecOps, and hardware-in-the-loop testing.

Leads space vehicle systems engineering through development, testing, delivery, and on-orbit operations. Supports the chief engineer, manages technical baselines, leads design and readiness reviews, directs systems engineering staff, and oversees architecture, interface, CONOPS, trade studies, risk assessment, and anomaly resolution. The role serves as a technical representative to customers and partners, contributes to proposals, and coaches engineers while balancing technical performance, cost, and risk.

Lead DoD systems development programs using MBSE, SysML, Cameo, and digital engineering practices. Architect systems, guide teams through the systems engineering lifecycle, establish requirements traceability, customize and automate modeling tools, mentor engineers, and collaborate with software and domain experts. The role supports software-intensive, open-architecture systems across defense mission areas and requires an active Secret clearance with eligibility for Top Secret.

Owns company-critical, long-term technical problems across multiple teams and organizations. Defines technical strategy, architectures, roadmaps, and engineering standards for large-scale customer-facing systems. Remains hands-on in software development while driving AI adoption in products and engineering workflows. Partners with senior product, engineering, and executive leaders to resolve complex problems, improve reliability and performance, and shape Dropbox’s technical direction.

Leads technical direction for scalable, secure, resilient software platforms while remaining hands-on with architecture, implementation, prototyping, debugging, and complex engineering problems. Modernizes legacy systems toward cloud-native, API-first, and AI-enabled architectures; establishes engineering standards; improves automation, testing, observability, and developer productivity; and mentors senior technical leaders across teams.

Define validation strategies, coverage architectures, and scalable methodologies for next-generation data center SSDs. Analyze requirements, architectures, workloads, and validation gaps; develop risk-based coverage models; evaluate emerging technologies; and apply AI, analytics, automation, and LLMs to improve validation effectiveness. Partner across architecture, firmware, systems, product, and validation teams, present strategic recommendations, influence technical direction, and mentor engineers.