Principal SDET, Cybersecurity Test Engineer JouléPrincipal SDET, Cybersecurity Test EngineerDenver, CO$144,000–$180,000 / yearTechnical Leader, this role is responsible for developing and driving the cybersecurity testing strategy across the Software Quality Engineering organization while enabling the broader organization to consistently implement and execute a unified cybersecurity testing approach. A core focus of this role is embedding cybersecurity as a continuous, front-loaded component of the software development lifecycle to enable early identification and prevention of vulnerabilities and potential security risks, while maintaining compliance with medical device regulatory requirements.
Sr. Principal Software Engineer - Boulder, Colorado Davidson Technologies, Inc.Sr. Principal Software Engineer - Boulder, ColoradoBoulder, COFull timeEducation:Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline from an accredited university and 9 years of related experience;OR a Master's degree in a STEM discipline and 7 years of related experience;OR a PhD in a STEM discipline and 4 years of related experience. Experience using the Atlassian Tool Suite (e.g., Jira, Confluence, Bitbucket).Demonstrated technical leadership experience (task lead, feature lead, or mentoring).Experience across the full software development lifecycle (requirements, design, implementation, integration, test, deployment, and sustainment).Clearance:
Principal Software Engineer Technical IntegrityPrincipal Software EngineerBoulder, ColoradoYou’ll work alongside senior peers solving challenging systems problems in a small, high-trust team where every hire makes a visible impact. If you’re a senior software engineer or principal technologist who thrives on autonomy, deep technical challenges, and building at the frontier of AI-assisted engineering, we’d love to hear from you.
Principal / Sr Principal Algorithms Software Engineer La Jolla Logic, IncPrincipal / Sr Principal Algorithms Software EngineerBoulder, CO$155,000–$180,000 / yearPrincipal Algorithm Software Engineer (Level 3): Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 5 years of related experience, or a Master's degree in a STEM discipline and 3 years experience, or a PhD and 1 year of experience. Principal Algorithm Software Engineer (Level 4): Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 8 years of related experience, or a Master's degree in a STEM discipline and 6 years experience, or a PhD and 4 year of experience.
Sr Principal Software Engineer (Clearance Required) Sierra Space CorporationSr Principal Software Engineer (Clearance Required)Centennial, CO$206,107–$283,397.50 / yearYou will make high-level design decisions that significantly impact program cost, schedule, and technical performance, drive the strategic direction of the software engineering team, and demonstrate project leadership, strong problem-solving skills, and effective communication with non-technical stakeholders. Furthermore, you will architect and oversee the technical aspects of large-scale projects, innovate, and make strategic decisions regarding the adoption of new technologies and methodologies to enhance efficiency and effectiveness.
Sr. Principal Software Engineer Sierra Space CorporationSr. Principal Software EngineerLouisville, COYou will make high-level design decisions that significantly impact program cost, schedule, and technical performance, drive the strategic direction of the software engineering team, and demonstrate project leadership, strong problem-solving skills, and effective communication with non-technical stakeholders. Furthermore, you will architect and oversee the technical aspects of large-scale projects, innovate, and make strategic decisions regarding the adoption of new technologies and methodologies to enhance efficiency and effectiveness.
Principal Software Engineer CVS Health CorpPrincipal Software EngineerCO$144,200–$288,400 / yearOperating as both a senior individual contributor and technical leader, you will partner closely with product, architecture, and engineering leadership to make pragmatic, high‑impact design decisions that balance speed, quality, and long‑term maintainability. Partner with teams and serve as subject matter expert to provide benchmarked solutions to multiple, complex technical projects/initiatives within own area of expertise and organize cross-departmental application architectural solutions.
Sr Principal Software Engineer (Clearance Required) Sierra SpaceSr Principal Software Engineer (Clearance Required)Louisville, CO$206,107–$283,397.50 / yearYou will make high-level design decisions that significantly impact program cost, schedule, and technical performance, drive the strategic direction of the software engineering team, and demonstrate project leadership, strong problem-solving skills, and effective communication with non-technical stakeholders. Furthermore, you will architect and oversee the technical aspects of large-scale projects, innovate, and make strategic decisions regarding the adoption of new technologies and methodologies to enhance efficiency and effectiveness.
Sr. Principal Software Engineer Sierra SpaceSr. Principal Software EngineerCentennial, COYou will make high-level design decisions that significantly impact program cost, schedule, and technical performance, drive the strategic direction of the software engineering team, and demonstrate project leadership, strong problem-solving skills, and effective communication with non-technical stakeholders. Furthermore, you will architect and oversee the technical aspects of large-scale projects, innovate, and make strategic decisions regarding the adoption of new technologies and methodologies to enhance efficiency and effectiveness.
NewChief Engineer/Principal Software Engineer CACIChief Engineer/Principal Software EngineerAurora, Colorado$114,600–$252,100 / yearLeadership Track Record: Proven experience as a Chief Engineer or senior technical delivery leader guiding large-scale teams (35+ personnel) through full SDLC in classified environments (Note: architectural vision is covered by our Chief Architect, so this role centers on execution, delivery, and team enablement). Job Title: Chief Engineer/Principal Software EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: TS/SCIEmployee Type: RegularPercentage of Travel Required: Up to 25%Type of Travel: Continental USAnticipated Posting End: 10/30/2026 .
NewChief Engineer/Principal Software Engineer CACI International Inc.Chief Engineer/Principal Software EngineerAurora, CO$114,600–$252,100 / yearLeadership Track Record: Proven experience as a Chief Engineer or senior technical delivery leader guiding large-scale teams (35+ personnel) through full SDLC in classified environments (Note: architectural vision is covered by our Chief Architect, so this role centers on execution, delivery, and team enablement). Stakeholder Engagement: Serve as a primary technical interface to leadership, government customers, and subcontractor teams, leading Technical Exchange Meetings (TEMs) and aligning execution with mission goals.
Sr. Principal Algorithms Software Engineer - Boulder, Colorado Davidson Technologies, Inc.Sr. Principal Algorithms Software Engineer - Boulder, ColoradoBoulder, COFull timeJob Requirements:Principal Algorithm Software Engineer (Level 3): Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 5 years of related experience, or a Master's degree in a STEM discipline and 3 years experience, or a PhD and 1 year of experience. Principal Algorithm Software Engineer (Level 4): Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 8 years of related experience, or a Master's degree in a STEM discipline and 6 years experience, or a PhD and 4 year of experience.
NewPrincipal Software Engineer, Developer Platforms CiscoPrincipal Software Engineer, Developer PlatformsBoulder, ColoradoThe applicable full salary ranges for this position, by specific state, are listed below: New York City Metro Area: $250,600.00 - $416,900.00 Non-Metro New York state & Washington state: $241,400.00 - $371,000.00 * For quota-based sales roles on Cisco’s sales plan, the ranges provided in this posting include base pay and sales target incentive compensation combined. For quota-based incentive pay, Cisco typically pays as follows: 75% of incentive target for each 1% of revenue attainment up to 50% of quota; 1.5% of incentive target for each 1% of attainment between 50% and 75%; 1% of incentive target for each 1% of attainment between 75% and 100%; and.
Sr. Principal Cyber Software Engineer (TG) Northrop Grumman CorpSr. Principal Cyber Software Engineer (TG)Aurora, CO$149,300–$234,600 / yearThe above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions. Basic Qualifications: Bachelor''s degree and experience must be in computer science, information systems, or network engineering with 8 years of experience, Masters degree with 6 years of experience, PhD with 4 years of experience.
Principal Software Engineer (TS/SCI) {S} ARKA Group, L.P.Principal Software Engineer (TS/SCI) {S}Aurora, ColoradoBeyond direct design, the architect is expected to drive technical consensus through trade studies, proactively identify and mitigate technical risks, act as the primary technical interface to leadership, government customers, and sub-contractor CA/CE’s, and actively participate in the mentorship and growth of the distributed engineering team, ultimately joining our team to help shape the development and delivery of custom solutions and providing significant opportunities for personal skill development at ARKA. ARKA is seeking an accomplished Software Architect/Principal Software Engineer who is deeply customer mission-focused and passionate about providing strategic technical leadership in the software architecture and design of complex government systems, requiring proven experience leading programs involving 30+ developers in a distributed environment.
Principal Software Engineer, Money Group Gusto IncPrincipal Software Engineer, Money GroupDenver, CO$189,000–$236,000 / yearThis role spans strategy and execution: guiding architectural direction across a group of 15-20 engineers, vetting external partners, prototyping new product lines to unblock product decisions, extracting services from our monolith, and mentoring the engineers around you. Our teams build the products that give workers more control over their money - on-demand pay, high-yield cash accounts, automated savings, and credit-building features - all anchored to the paycheck relationship Gusto already powers.
Software Engineer Iii/Sr/Principal, Flight Software (Contractor) Sierra SpaceSoftware Engineer Iii/Sr/Principal, Flight Software (Contractor)Centennial, CO$60.87–$83.69 / hourThe Software Engineer participates in all portions of the software life cycle (concept development, requirements definition, design, development, testing, and deployment) of flight software to support ongoing and future small satellite programs. Your work will ensure we meet customer requirements by making data-driven decisions in architecting, implementing and testing the design in a testbed prototype and subsequent delivery of the flight code.
Principal Software Engineer (Hybrid, Denver Metro Preferred) FusionAuthPrincipal Software Engineer (Hybrid, Denver Metro Preferred)Denver, COFull timeWhen you join FusionAuth’s Denver team, you’ll enjoy a modern campus experience designed for productivity, wellness, and community: Newly upgraded amenity spaces including a sleek tenant lounge and café with booth seating and collaborative workspaces. Industry & Technology Leadership: Track where the identity industry is heading: passkeys/FIDO2, device authorization, DPoP, token binding, emerging OAuth and OIDC drafts, and the rapidly evolving intersection of AI and identity (agent authentication, scoped credential issuance, authorization for AI-driven workflows).
Principal Software Engineer, AI SIEM SentinelOnePrincipal Software Engineer, AI SIEMDenver, CO$216,000–$297,000 / yearOur AI SIEM ingests petabytes of data per day, powers the analyst workflows that turn that data into alerts, findings, assets, and incidents, and drives the detection engines, both rule-based and AI-driven, that catch what matters. Ideal candidates will have: Deep experience (15 or more years) building and operating large-scale distributed backend systems, with direct experience in at least two of: high-throughput data ingest/storage, query engines, or detection/rules systems.
Principal Software Engineer (Java & AWS) VertaforePrincipal Software Engineer (Java & AWS)Denver, COAlthough not a primary duty compared to developing and supporting code, a software engineer at Vertafore also works directly with customers as part of a cross-functional team, which means you need to be a proactive self-starter, able to multi-task in a fast-paced environment and be service-focused to help nurture the customer experience. You will work with a fast-paced, skilled team of business analysts, conversion engineers,architects,developers and quality assurance engineers across multiple high-profile projects with development responsibility of assigned projects.