US Defense Engineering Lead

MattermostDenver, Colorado, United States; Honolulu, Hawaii, United States; San Antonio, Texas, United States; San Diego, California, United States; United States; Washington, District of Columbia, United States

On-site Full-time

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Qualifications

Proven experience in defense engineering or related fields. Strong leadership skills with a focus on team development. Ability to navigate complex projects and deliver results under pressure. Excellent communication and interpersonal skills.

About the job

Join Mattermost as the US Defense Engineering Lead, where you will play a pivotal role in shaping our engineering strategies for defense applications. You will lead a dynamic team dedicated to developing innovative solutions that enhance our national defense capabilities. Your expertise will guide the team in tackling complex technical challenges while fostering a culture of collaboration and excellence.

About Mattermost

Mattermost is a leading provider of collaboration and messaging solutions designed for high-stakes environments. Our mission is to empower teams with the tools they need to achieve their goals effectively, especially in critical sectors like defense. Join us in making a difference!

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Manager of Security Defense Engineering

DigitalOcean

Full-time|On-site|Denver

Join DigitalOcean as the Manager of Security Defense Engineering, where you will lead a dedicated team focused on safeguarding our infrastructure and customer data. In this pivotal role, you’ll develop innovative security solutions, tackle complex security challenges, and collaborate with cross-functional teams to enhance our security posture.

Mar 18, 2026

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Senior Security Architect for Missile Defense

True Anomaly, Inc.

Full-time|$200K/yr - $290K/yr|On-site|Denver, CO and Long Beach, CA

A new era in space exploration has emerged. At True Anomaly, we are on the lookout for visionary individuals who possess the skills and determination to develop groundbreaking technologies that tackle the future's engineering, manufacturing, and operational challenges in the realm of space security and sustainability.OUR MISSIONThe peaceful utilization of space is crucial for our continued prosperity on Earth—impacting everything from communications and finance to navigation and logistics. True Anomaly pioneers innovative solutions at the convergence of spacecraft, software, and AI to bolster the capabilities of the U.S., its allies, and commercial partners. We are dedicated to ensuring global security by facilitating access to space and promoting its sustainability for all.OUR VALUESBe the Offset. We engineer asymmetric advantages through creativity and resourcefulness.What Would It Take? We challenge conventional thinking to achieve extraordinary outcomes.It’s the People. Our team is our greatest asset, and collaboration makes us stronger.YOUR ROLEAs a Staff Security Architect, you will serve as the pivotal technical link in safeguarding True Anomaly's national security space systems, focusing on ground-based command and control (C2) infrastructure, missile defense software platforms, and cloud environments operating at DoD Impact Level 5/6 and SECRET/TS/SCI classification levels. This unique, hands-on position requires a blend of deep security architecture expertise and active software development.You will design and implement security architectures that encompass the entire mission lifecycle, including satellite operations, ground segments, C2 systems, and mission planning platforms. Your efforts will support the entire journey to Authority to Operate (ATO) across IL-5, IL-6, and TS/SCI environments, ensuring our systems conform to the highest federal security standards while maintaining operational effectiveness in contested environments.

Mar 30, 2026

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US Defense Engineering Lead

Mattermost

Full-time|On-site|Denver, Colorado, United States; Honolulu, Hawaii, United States; San Antonio, Texas, United States; San Diego, California, United States; United States; Washington, District of Columbia, United States

Mar 27, 2026

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Engineering Manager, Missile Defense Mechanical

True Anomaly, Inc.

Full-time|$145K/yr - $205K/yr|On-site|Denver, CO or Long Beach, CA

A new era in space exploration is upon us. True Anomaly is on the lookout for innovative thinkers with the ambition to revolutionize technology that addresses the complexities of engineering, manufacturing, and operational hurdles in space security and sustainability.OUR MISSIONThe peaceful utilization of space is vital for the ongoing prosperity of life on Earth—from communication and finance to navigation and logistics. True Anomaly pioneers innovative technologies at the confluence of spacecraft, software, and AI to bolster the capabilities of the U.S., its allies, and commercial partners. We are dedicated to maintaining global security by ensuring equitable access to and sustainability of space for everyone.OUR VALUESBe the offset. We craft asymmetric advantages through creativity and ingenuity.What would it take? We question the status quo to achieve ambitious results.It’s the people. Our team is our competitive edge, and together, we are stronger.YOUR MISSIONWe are looking for an Engineering Manager of Missile Defense & Hypersonic Mechanical Engineering to spearhead a dynamic team of 6–10 mechanical engineers engaged in our interceptor, kill vehicle, and hypersonic flight vehicle initiatives. This leadership role is fundamentally about nurturing talent while remaining closely connected to the engineering process. Collaborating with fellow managers, you will share responsibility for the organizational health, best practices, standard processes, technical direction, recruitment, and career advancement of a team of engineers ranging from entry-level to staff engineers, all working on critical flight hardware designed to operate flawlessly in extreme thermal, aerodynamic, and high-g environments. You will work in close partnership with systems engineering, program management, aerodynamics, thermal, GN&C, and propulsion teams to ensure that the mechanical engineering function delivers flight-ready hardware efficiently, accurately, and with high quality across all current programs. If you are an experienced missile defense or hypersonic mechanical engineer ready to lead a team engaged in the most impactful flight vehicle design work in the defense sector, this is your calling.

Apr 2, 2026

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Manager of Mission Security Engineering

True Anomaly Inc.

Full-time|On-site|Denver, CO or Long Beach, CA

Join True Anomaly Inc. as a Manager of Mission Security Engineering, where you will lead our dedicated team in ensuring the security of critical missions. This role involves overseeing engineering initiatives, implementing security protocols, and collaborating with cross-functional teams to enhance mission safety.

Apr 8, 2026

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GNC Engineer, Missile Defense

True Anomaly Inc.

Full-time|On-site|Denver, CO or Long Beach, CA

Join True Anomaly Inc. as a GNC Engineer specializing in Missile Defense. This role allows you to leverage your expertise in guidance, navigation, and control systems to enhance missile defense technologies. You will collaborate with a dynamic team of engineers and scientists, driving innovation in missile defense applications.

Apr 8, 2026

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Senior Solutions Engineer in Aerospace & Defense

Xometry

Full-time|$101K/yr - $150K/yr|On-site|Denver, CO

Xometry (NASDAQ: XMTR) is at the forefront of transforming industries by bridging innovative thinkers with manufacturers capable of realizing their visions. Our digital marketplace empowers manufacturers with essential resources for growth while simplifying the process for Fortune 1000 companies to access global manufacturing capabilities.We are on the lookout for a skilled and engaging Senior Solutions Engineer to join our dynamic team. This pivotal role is designed to support our Sales team by offering insights, feedback, and sharing valuable knowledge from the aerospace and defense engineering and manufacturing sector. This position is a unique fusion of customer interaction, technical proficiency, and project management, reporting to the Pre-Sales Engineering community, which is jointly overseen by Sales and Operations.This is an exceptional opportunity to be part of a rapidly expanding company at the cutting edge of digital manufacturing. If you are an accomplished, collaborative engineer with a passion for the aerospace industry and digital technologies, this position may be ideal for you.

Feb 2, 2026

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Structural Integrity Lead for Missile Defense Systems

True Anomaly, Inc.

Full-time|$160K/yr - $235K/yr|On-site|Denver, CO or Long Beach, CA

A new era in space exploration is upon us. True Anomaly is on the lookout for talented and ambitious individuals who are eager to develop groundbreaking technologies addressing the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONThe peaceful utilization of space plays a crucial role in ensuring prosperity on Earth—from communications and finance to navigation and logistics. At True Anomaly, we engineer innovative technologies that amalgamate spacecraft, software, and artificial intelligence to bolster the capabilities of the United States, its allies, and commercial partners. Our commitment is to safeguard global security by ensuring equitable access to and sustainability of outer space.OUR VALUESBe the offset. We cultivate asymmetric advantages through creativity and ingenuity.What would it take? We challenge the status quo to achieve exceptional outcomes.It’s the people. Our team is our greatest asset, and together we excel.YOUR MISSIONRESPONSIBILITIESTrue Anomaly is in search of a distinguished Structural Integrity Lead to spearhead the technical execution of our advanced missile defense program. This is a unique opportunity to conceptualize solutions for some of the most complex challenges in missile defense and aerospace engineering. You will be responsible for establishing and enforcing processes and standards that ensure structural integrity across the program. This role involves developing and validating structural models, managing structural margins throughout configurations, and defining methodologies for fracture control, fatigue, creep, and damage tolerance. Additionally, you will implement processes for verification and testing activities pertinent to structural integrity.

Nov 18, 2025

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Structural Dynamics Engineer, Missile Defense (III to Staff)

True Anomaly Inc.

Full-time|$125K/yr - $285K/yr|On-site|Denver, CO, Long Beach, CA

A new era in space exploration is upon us, and True Anomaly is on the forefront of this revolution. We are in search of talented and ambitious individuals to pioneer cutting-edge technologies that address the evolving challenges in engineering, manufacturing, and operational aspects of space security and sustainability.OUR MISSIONThe peaceful utilization of space is crucial for sustained prosperity on Earth, impacting critical sectors from communications and finance to navigation and logistics. True Anomaly innovates at the intersection of spacecraft, software, and AI to enhance capabilities for the U.S., its allies, and commercial partners, while safeguarding global security and ensuring sustainable access to space for all.OUR VALUESBe the offset. We leverage creativity and ingenuity to create asymmetric advantages.What would it take? We question assumptions to achieve audacious outcomes.It’s the people. Our team is our competitive edge, and collaboration leads to greater success.YOUR MISSIONRESPONSIBILITIESLead the analysis and validation of missile defense structural systems to ensure their survivability and performance in dynamic environments, encompassing launch and mission operations.Conduct detailed structural dynamics stress analyses, including modal, harmonic, random vibration, shock, and transient response simulations.Develop and validate finite element models (FEMs) of missile defense structures and subsystems to accurately predict dynamic behavior.Define and oversee dynamic testing campaigns, including vibration, shock, and acoustic tests, to verify structural integrity and correlate models with test outcomes.Collaborate with multidisciplinary teams, including mechanical, thermal, and systems engineering, to ensure dynamic requirements are seamlessly integrated into the design process.Provide specialized expertise in structural dynamics during trade studies, design reviews, and critical decision-making moments.

Apr 9, 2026

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Senior Solutions Engineer - Aerospace and Defense

Xometry

Full-time|$101K/yr - $150K/yr|On-site|Denver, CO

At Xometry (NASDAQ: XMTR), we are revolutionizing the manufacturing landscape by seamlessly connecting visionary thinkers with the manufacturers who realize their concepts. Our digital marketplace empowers manufacturers with vital resources for growth while facilitating access to global manufacturing capacity for buyers at Fortune 1000 companies.We are on the lookout for a highly skilled and dynamic Senior Solutions Engineer to play a pivotal role in our customer-facing operations. This position directly supports our Sales team by offering insights, feedback, and sharing knowledge derived from the aerospace and defense engineering and manufacturing sectors. It is a unique opportunity to blend customer interaction, technical acumen, and project management skills. The Solutions Engineering team operates within the Pre-Sales Engineering domain, guided by both Sales and Operations leadership.Join us in this unique opportunity at Xometry, a rapidly expanding company at the forefront of digital manufacturing. If you are an accomplished, team-oriented engineer with digital proficiency and a genuine passion for the aerospace industry, this role may be the perfect fit for you.

Feb 2, 2026

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Engineering Manager, Application Security

True Anomaly, Inc.

Full-time|$175K/yr - $255K/yr|On-site|Denver, CO or Long Beach, CA

Join the new space race with True Anomaly! We are on the lookout for talented and ambitious individuals to develop innovative technologies that tackle the next generation of engineering, manufacturing, and operational challenges for space security and sustainability.OUR MISSIONThe peaceful utilization of space is vital for ongoing prosperity on Earth, influencing everything from communications and finance to navigation and logistics. At True Anomaly, we are dedicated to creating pioneering technology at the intersection of spacecraft, software, and AI, enhancing the capabilities of the U.S., its allies, and commercial partners. Our mission is to ensure global security by safeguarding space access and sustainability for all.OUR VALUESBe the offset. We embrace creativity and ingenuity to establish asymmetric advantages.What would it take? We question assumptions to deliver ambitious outcomes.It’s the people. Our team is our competitive edge, and together we excel.YOUR MISSIONAs the Engineering Manager for Application Security, you will be tasked with establishing and leading True Anomaly's application security team. Your focus will be on securing our most crucial software, including flight software that operates in orbit and command and control (C2) systems that are critical for mission success. This is a unique opportunity to influence the future of application security in national security space systems, building a world-class team from the ground up and defining the processes, tools, and culture necessary to secure our spacecraft and ground operations.In this role, you will enjoy significant autonomy to recruit and nurture a high-performing application security team over the next year. You will define the application security strategy, embed security throughout the software development lifecycle, and lay the groundwork for a security program that addresses the unique demands of flight-critical and mission-critical systems in contested environments.This position is perfect for a technical leader who excels at team building, desires to make a significant impact on cutting-edge space technology, and is motivated by the challenge of solving complex security issues at the intersection of embedded systems, real-time software, and cloud-based command and control.This role requires a minimum Secret clearance, with a strong preference for an active TS/SCI clearance or the ability to obtain and maintain TS/SCI.

Feb 5, 2026

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Senior Staff Mechanical Engineer - Missile Defense

True Anomaly Inc.

Full-time|On-site|Denver, CO or Long Beach, CA

Role Overview True Anomaly Inc. is hiring a Senior Staff Mechanical Engineer focused on missile defense systems. This position is based in Denver, CO or Long Beach, CA. What You Will Do Lead the design, development, and testing of advanced mechanical systems for missile defense applications. Work closely with engineers and scientists to develop solutions that support national security goals. Drive technical progress and innovation on complex engineering challenges. Team and Environment Join a group of engineers and scientists committed to advancing technology in support of critical missions. The team values collaboration and technical excellence.

Apr 16, 2026

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Enterprise Security Engineer

Compa

Full-time|On-site|Denver Office

Join our dynamic team at Compa as an Enterprise Security Engineer. In this pivotal role, you will be responsible for safeguarding our enterprise systems and data against security threats. You will leverage your expertise in security protocols, risk management, and incident response to enhance our security posture.This position demands a proactive approach to security, collaborating with cross-functional teams to implement robust security measures, conduct vulnerability assessments, and ensure compliance with industry standards. If you have a passion for cybersecurity and a commitment to excellence, we want to hear from you!

Feb 28, 2026

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Senior Test Engineer - Aerospace Defense Systems

True Anomaly, Inc.

Full-time|$125K/yr - $170K/yr|On-site|Denver, CO

A new era of space exploration is upon us. True Anomaly is on the lookout for talented and ambitious individuals to create pioneering technology aimed at addressing the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONThe harmonious use of space is vital for ongoing prosperity on Earth, impacting everything from communications and finance to navigation and logistics. At True Anomaly, we develop groundbreaking technology that merges spacecraft, software, and AI to bolster the capabilities of the U.S., its allies, and commercial partners, ensuring global security through sustainable access to space.OUR VALUESBe the Offset. We leverage creativity and ingenuity to create asymmetric advantages.What Would It Take? We question norms to achieve extraordinary results.It’s the People. Our team is our greatest asset, and together we are stronger.YOUR MISSIONWe are in search of a dynamic Senior Test Engineer who will be integral in designing, planning, and executing test campaigns for aerospace defense systems. Collaborating with engineers, program managers, and technical teams, you will ensure that our systems fulfill performance, environmental, and mission-critical requirements. Your responsibilities will include developing test plans, executing tests, gathering data, analyzing results, and confirming that systems adhere to all specifications. This role provides an exceptional opportunity to contribute to advanced aerospace technologies in a fast-paced, mission-oriented setting.

Jan 14, 2026

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Senior Security Engineer, Enterprise

True Anomaly, Inc.

Full-time|$155K/yr - $225K/yr|On-site|Denver, CO or Long Beach, CA

A new era in space exploration is upon us. True Anomaly is on the lookout for passionate and skilled individuals to develop cutting-edge technology that addresses the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONThe peaceful utilization of space is crucial for ongoing prosperity on Earth—from communications and finance to navigation and logistics. True Anomaly innovates at the crossroads of spacecraft, software, and artificial intelligence to enhance the capabilities of the United States, its allies, and commercial partners. We are dedicated to ensuring global security by facilitating access to space and promoting sustainability for everyone.OUR VALUESBe the offset. We create unique advantages through creativity and resourcefulness.What would it take? We challenge the status quo to achieve ambitious outcomes.It’s the people. Our team is our greatest asset, and collaboration makes us stronger.YOUR MISSIONAs a Senior Enterprise Security Engineer, you will play a vital role in securing the infrastructure that enables True Anomaly to achieve its mission. Your responsibilities will include designing, engineering, and implementing security improvements across employee workstations, on-premises servers, and cloud environments. You will collaborate with various organizational partners to integrate security into the company’s foundational processes while ensuring compliance with relevant requirements. You will often be tasked with addressing the challenge: “How can we empower the business to operate with minimal risk?”Within True Anomaly’s Enterprise Security team, you will have substantial autonomy to craft and execute solutions for a diverse range of security challenges. One project may focus on enhancing enterprise identity, while another could involve establishing security protocols for a manufacturing environment. You will thrive in a dynamic, fast-paced setting where your decisions and expertise will significantly influence our security stance.This position is perfect for a proactive individual who enjoys taking ownership, wishes to make a lasting impact within the organization, and is excited by the opportunity to tackle complex challenges and contribute to meaningful projects.

Feb 5, 2026

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Security Engineer

360 IT Professionals

Full-time|On-site|Denver

Join our dynamic team at 360 IT Professionals as a Security Engineer. In this role, you will be responsible for safeguarding our digital infrastructure, implementing robust security measures, and ensuring compliance with industry standards. You will work closely with cross-functional teams to identify vulnerabilities and deploy effective solutions to enhance our security posture.

Jun 12, 2017

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Information Security Engineer

StemXpert1

Full-time|On-site|Denver

Join StemXpert1 as an Information Security Engineer, where you will play a pivotal role in safeguarding our digital assets and ensuring the integrity of our systems. You will be responsible for identifying vulnerabilities, implementing security measures, and developing security protocols. Collaborate with cross-functional teams to foster a secure environment and contribute to our mission of providing cutting-edge solutions.

Oct 24, 2016

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Senior Enterprise Security Engineer - Vulnerability Management

True Anomaly, Inc.

Full-time|$115K/yr - $165K/yr|On-site|Denver, CO or Long Beach, CA

About True Anomaly True Anomaly, Inc. develops technology for space security and sustainability. The team works at the intersection of spacecraft, software, and AI to support the U.S., its allies, and commercial partners. The company’s mission: ensure peaceful and sustainable access to space, which is vital for communication, finance, navigation, and logistics on Earth. Our Values Be the Offset. Innovate with creativity and ingenuity to create asymmetric advantages. What Would It Take? Challenge the status quo to achieve ambitious outcomes. It’s the People. The team is the competitive edge, and success comes from thriving together. Role Overview: Senior Enterprise Security Engineer – Vulnerability Management Location: Denver, CO or Long Beach, CA True Anomaly is hiring a Senior Enterprise Security Engineer focused on Vulnerability Management. This position plays a key role in identifying, tracking, and resolving vulnerabilities across the organization’s enterprise environment. The work covers endpoints, servers, cloud infrastructure, and applications. This engineer operates and improves the vulnerability management program, maintaining continuous visibility over the attack surface. The role involves close collaboration with senior engineers and cross-functional teams to assess risk, coordinate remediation, and monitor progress in reducing exposure. What You Will Do Drive the vulnerability management program, ensuring issues are identified and tracked through resolution. Maintain oversight of vulnerabilities across endpoints, servers, cloud, and applications. Work with other engineers and teams to assess risk and coordinate remediation efforts. Ensure timely patch deployment within established service level agreements (SLAs). Track exceptions and help develop strategies to minimize attack surfaces or automate patching. Bridge security findings with actionable steps and monitor progress toward reducing organizational risk. Who Thrives Here This role suits detail-oriented professionals who see issues through to resolution and want to help advance a core security function alongside experienced colleagues. The work environment is challenging and collaborative, with direct impact on the company’s security posture. Security Clearance Requirement This position requires the ability to obtain and maintain a security clearance.

Apr 14, 2026

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Senior Product Manager for Aerospace & Defense Software

RTI

Full-time|On-site|Denver, CO

Join RTI as a Senior Product Manager and shape the future of real-time software in the Aerospace & Defense (A&D) sector. Our RTI Connext software is integral to over 500 defense programs across various domains including land, sea, air, and space. We are seeking an innovative product manager who has a deep understanding of emerging trends, especially in UAS, Autonomy, Maritime, and other mission systems.In this pivotal role, you will lead the product strategy to enhance how Connext meets the needs of A&D customers. Your expertise will help translate mission requirements into actionable product needs, guide the roadmap in collaboration with R&D, and ensure that RTI’s platform effectively addresses the challenges faced by defense programs.This position is ideal for someone who thrives on defining what solutions to create and why they matter, using customer insights, mission goals, and market trends to drive product decisions. Key Responsibilities:Own and direct the A&D product strategy.Develop an in-depth understanding of UAS, autonomy, maritime, C-UAS, and JADC2/MOSA requirements to inform product development for distributed systems, security, real-time data, and interoperability.Effectively convert customer and mission requirements into clear product specifications, use cases, and roadmap proposals.Amplify the voice of the defense customer.Conduct comprehensive product discovery to identify pain points, operational workflows, constraints, and integration patterns.Validate roadmap initiatives with key customers and translate insights into actionable product strategies.Enhance RTI’s platform for A&D applications.Identify capability gaps and opportunities for growth in critical defense applications.Collaborate with Product and Engineering teams to prioritize essential capabilities for A&D adoption, including security, interoperability, platform support, performance, tooling, and integration.Work alongside Sales and Business Development to refine pricing, licensing, and overall product strategy to facilitate seamless adoption in target accounts.Partner across functions for successful product adoption.Collaborate with Sales, Business Development, and Marketing to articulate technical capabilities into compelling value propositions and differentiators.Develop strategic product positioning to empower Sales and BD teams to secure new business in key Department of Defense initiatives.Contribute to strategic go-to-market plans for key programs and partners by making informed resource allocation decisions and analyzing the ROI of existing initiatives.

Mar 18, 2026

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Senior Staff Mechanical Engineer - Missile Defense Tooling & MGSE Design

True Anomaly Inc.

Full-time|$130K/yr - $230K/yr|On-site|Denver, CO or Long Beach, CA

About True Anomaly True Anomaly develops advanced technology at the intersection of spacecraft, software, and AI to strengthen the security and sustainability of space. Our work supports the United States, its allies, and commercial partners, with a focus on keeping space accessible and secure for all. The company is headquartered in Denver, CO and Long Beach, CA. Our Mission We believe peaceful use of space underpins prosperity on Earth, from navigation and logistics to communications and finance. True Anomaly aims to solve the next generation of engineering, manufacturing, and operational challenges in space security. Our Values Be the offset. We create asymmetric advantages through creativity and ingenuity. What would it take? We challenge assumptions and push for ambitious outcomes. It’s the people. Our team is our greatest asset, and we thrive together. Role Overview: Senior Staff Mechanical Engineer - Missile Defense Tooling & MGSE Design This position focuses on technical leadership for tooling and mechanical ground support equipment (MGSE) within Missile Defense programs. The role is based in either Denver, CO or Long Beach, CA. What You Will Do Act as the technical authority for tooling and MGSE design in missile defense projects. Lead or contribute as a senior engineer, depending on experience and program needs. Develop and execute program tooling strategies, including setting engineering standards. Guide and mentor a team of engineers (for Staff level). Serve as the primary liaison with program leadership, Missile Defense Agency (MDA) offices, and government stakeholders. What We’re Looking For Over 8 years of experience in tooling and MGSE design. Background in missile defense, missile systems, rocket propulsion, or related defense manufacturing fields. Ability to work autonomously or lead a team, depending on level of seniority.

Apr 16, 2026

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