Staff Security Software Engineer jobs in Denver – Browse 675 openings on RoboApply Jobs

Staff Security Software Engineer jobs in Denver

Open roles matching “Staff Security Software Engineer” with location signals for Denver. 675 active listings on RoboApply Jobs.

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companyTrue Anomaly, Inc. logo
Staff Security Architect

True Anomaly, Inc.

Full-time|$195K/yr - $285K/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 individuals with the ambition to develop groundbreaking technology that addresses the engineering, manufacturing, and operational challenges of 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 is at the forefront of creating innovative technology that merges spacecraft, software, and artificial intelligence to enhance the capabilities of the U.S. and its allies, as well as commercial partners. We are dedicated to ensuring global security by promoting sustainable access to space for everyone.OUR VALUESBe the offset. We leverage creativity and ingenuity to create asymmetric advantages.What would it take? We challenge assumptions to achieve ambitious outcomes.It’s the people. Our team is our strongest asset, and collaboration makes us stronger.YOUR MISSIONAs a Staff Security Architect, you will serve as the pivotal technical bridge, securing True Anomaly's national security space systems—from our satellite constellation in orbit to our ground-based command and control infrastructure. This is a unique opportunity to design comprehensive security strategies for one of the most demanding operational landscapes: space systems that operate under stringent national security standards.In this role, you will define and implement security architectures that encompass the entire mission lifecycle—covering satellite operations, ground segments, mission planning systems, and the essential data pathways connecting them. You will ensure our systems adhere to the most rigorous federal security standards while maintaining operational effectiveness in contested environments.This position is perfect for a security architect who excels at the intersection of hardware and software security, understands the unique challenges posed by national security systems, and is motivated by the opportunity to secure systems that operate in the complexities of space.

Feb 5, 2026
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companyred6 logo
Full-time|On-site|Denver

Join red6 as a Staff Software Test Engineer and take part in our exciting journey to develop cutting-edge software solutions. In this role, you will be responsible for designing and executing comprehensive test plans, ensuring the delivery of high-quality software products. Your expertise will contribute to the continuous improvement of our testing processes while collaborating with cross-functional teams.

Mar 31, 2026
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companyTrue Anomaly, Inc. logo
Full-time|$180K/yr - $260K/yr|On-site|Denver, CO or Long Beach, CA

A new era in space exploration is emerging, and True Anomaly is on the forefront of this revolution. We are seeking talented and ambitious individuals to develop cutting-edge technology that addresses the forthcoming challenges in engineering, manufacturing, and operational aspects of space security and sustainability.OUR MISSIONThe peaceful utilization of outer space is vital for the ongoing prosperity of our planet, encompassing fields from communications and finance to navigation and logistics. At True Anomaly, we create pioneering technology at the crossroads of spacecraft, software, and AI, enhancing the capabilities of the United States, its allies, and commercial partners while ensuring access to space and sustainability for all.OUR VALUESBe the offset. We cultivate asymmetric advantages through creativity and innovation.What would it take? We question assumptions to achieve ambitious outcomes.It’s the people. Our team is our strongest asset, and we thrive together.YOUR MISSIONSoftware serves as the central nervous system for True Anomaly's engineering and product initiatives. It connects military objectives, theoretical astrodynamics, and the control of spacecraft and ground systems, both human and autonomous, across time and space. We are looking for an outstanding Staff Full Stack Software Engineer to steer the technical trajectory and advancement of our spacecraft modeling, simulation, and distributed ground control platform across every layer of the stack.This high-impact, strategic leadership role will involve defining and driving the technical roadmap that encompasses both frontend and backend systems, leading cross-functional initiatives that connect engineering, product, and operations, and laying the architectural groundwork that will support the scalability of our platform for years to come. You will identify crucial technical investments, advocate for them throughout the organization, and oversee their implementation. Your role will not just involve building features; you will influence product direction, shape company objectives, and mentor engineers who will develop the next generation of our platform. When you identify systemic issues that impact speed, reliability, or quality across the stack, you will diagnose root causes, foster consensus on solutions, and instigate organizational change to resolve them.Prior experience in building space ground systems or aerospace is not a requirement. You will lead critical, greenfield initiatives that hold strategic importance for the company and possess the potential to fundamentally transform our operations.

Mar 27, 2026
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companyTrue Anomaly logo
Full-time|$160K/yr - $230K/yr|On-site|Denver, CO or Long Beach, CA

Join the forefront of the new space race with True Anomaly, where we seek talented individuals with the ambition to develop groundbreaking technologies that address the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONThe peaceful utilization of space is vital for our continued prosperity on Earth—from communications and finance to navigation and logistics. At True Anomaly, we innovate at the intersection of spacecraft, software, and AI, enhancing the capabilities of the U.S., its allies, and commercial partners. We are committed to safeguarding global security by ensuring space access and sustainability for all.OUR VALUESBe the offset. We create asymmetric advantages through creativity and ingenuity.What would it take? We challenge assumptions to achieve ambitious outcomes.It’s the people. Our team is our competitive advantage, and we thrive together.YOUR MISSIONAs a Staff Flight Software Engineer at True Anomaly, you will engage in every phase of the spacecraft program including design, analysis, manufacturing, testing, and flight. Our culture is centered around innovation and speed, making this the ideal opportunity for those looking to realize their full potential.

Mar 25, 2026
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companyTrue Anomaly Inc. logo
Full-time|$175K/yr - $230K/yr|On-site|Denver, CO

A new era of innovation in space technology has commenced. True Anomaly is on the lookout for skilled and passionate individuals eager to develop groundbreaking technology that addresses the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONThe peaceful utilization of space is vital for the ongoing prosperity of life on Earth—from communications and finance to navigation and logistics. True Anomaly is dedicated to creating cutting-edge technology at the intersection of spacecraft, software, and artificial intelligence to enhance the capabilities of the United States, its allies, and commercial partners. We are committed to ensuring global security by promoting access to space and its sustainability for all.OUR VALUESBe the offset. We create asymmetric advantages through creativity and ingenuity.What would it take? We challenge assumptions to deliver bold results.It’s the people. Our team is our competitive edge, and together we are stronger.YOUR MISSIONSoftware serves as the central nervous system for True Anomaly's engineering and product philosophy. It connects military objectives, theoretical astrodynamics, and the management of spacecraft and ground systems, both human and autonomous, across time and space. We are seeking an exceptional Senior Staff Front End Software Engineer to spearhead the technical direction and evolution of our sophisticated spacecraft modeling and simulation software.This high-impact, strategic leadership position involves defining and driving the frontend technical roadmap, leading cross-functional initiatives that engage engineering, product, and operations, and establishing architectural foundations that will support our platform's scalability for years to come. You will identify strategic technical investments, advocate for them throughout the organization, and oversee their implementation. Your role will not only involve building features but also shaping product direction, influencing company goals, and mentoring the engineers who will develop the next generation of our platform. When systemic issues arise that impact velocity or quality, you will diagnose root causes, build consensus on solutions, and drive necessary organizational changes.Prior experience in aerospace or building space ground systems is not required. You will lead critical, greenfield initiatives of strategic importance to the company.

Feb 7, 2026
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companyTrue Anomaly, Inc. logo
Full-time|$145K/yr - $205K/yr|On-site|Denver, CO or Long Beach, CA

True Anomaly, Inc. is advancing new technology for space security and sustainability. The team is growing in Denver, CO and Long Beach, CA, and seeks experienced engineers ready to solve complex challenges in spacecraft software and security. About True Anomaly True Anomaly builds technologies that combine spacecraft, software, and AI to strengthen the capabilities of the U.S., its allies, and commercial partners. The mission: keep space accessible and secure for all, supporting critical areas like communications, navigation, and logistics. Values Be the offset. Creativity and ingenuity drive asymmetric advantages. What would it take? The team pushes boundaries to reach ambitious goals. It’s the people. Success depends on a strong, collaborative team. Role Overview: Senior Embedded Security Engineer - Flight Software This role focuses on strengthening the security of software running on True Anomaly’s space vehicles. The Senior Embedded Security Engineer works alongside engineers from multiple disciplines to develop and secure flight software, meeting strict safety-critical standards. What You Will Do Collaborate with flight software engineers to integrate security best practices throughout the development lifecycle. Serve as a security subject matter expert for embedded software. Establish secure coding standards and design security testing frameworks. Guide the team in enforcing security controls for resource-constrained embedded environments. Implement and audit secure boot processes and firmware validation. Develop and review cryptographic implementations and runtime hardening measures. Create systems for memory safety, secret and key material management, and secure inter-process and inter-device communication. This position suits engineers who thrive at the intersection of embedded systems and security, enjoy solving technical problems in safety-critical environments, and want to shape the security architecture of future space systems. Early team members will have a lasting impact on spacecraft security and operations.

Apr 14, 2026
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companyThe Trade Desk logo
Full-time|On-site|Bellevue; Boulder; Chicago; Denver; Irvine; Los Angeles; New York; San Francisco; San Jose; Seattle; Ventura

We are seeking a highly skilled and experienced Lead Senior Staff Software Engineer specializing in front-end fundamentals to join our innovative team at The Trade Desk. In this role, you will lead the development of cutting-edge front-end solutions that enhance user experience and drive our product's success. You will collaborate closely with cross-functional teams, guiding junior engineers and fostering a culture of excellence in software development.

Apr 13, 2026
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companyFivetran logo
Full-time|$203K/yr - $253.8K/yr|Hybrid|Denver, Colorado, United States, AMER

Since its inception, Fivetran has been dedicated to simplifying access to data, making it as dependable as electricity. Our technology enables organizations to receive their customer data in a structured, ready-to-query format without the need for engineering or maintenance. We take pride in empowering companies to embrace a truly data-driven culture.About the RoleAt Fivetran, we are developing data pipelines to fuel the modern data stack for thousands of businesses.We are seeking a passionate Senior Staff Software Engineer to join our rapidly expanding Database Team, focusing on SQL Server and Oracle binary log reading and change data capture. In this role, you will be instrumental in building innovative features for our data pipeline service, enhancing our software architecture, and ensuring the reliable operation of our services. Ideal candidates are motivated to learn and apply our core values to create exceptional products, engage in complex investigations into database transaction logs, binary log parsing, and data replication, and contribute to a world-class ELT solution for SQL Server and Oracle systems.Fivetran embodies data-driven development — our engineering team is committed to creating a premier product that:Facilitates Data Analytics — join our mission to reliably deliver top-notch schemas and clean data that are intuitively useful for analysts.Contributes to our Community — help develop tools such as Data Lakes, SQL-based Transformations, and schema explorers to empower analysts to select and enhance their tools.Is Absolutely Dependable — strive to make Fivetran the most reliable and secure component of our customers’ data infrastructure.We emphasize straightforward coding practices and take immense pride in the simplicity and effectiveness of the systems we create. Our back-end technologies include Java, C, Postgres, and Kubernetes, while our front-end is built on React and Typescript.

Mar 3, 2026
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companyCompa logo
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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companyFastly logo
Full-time|$211.4K/yr - $253.6K/yr|On-site|Denver, CO; New York City, NY; San Francisco, CA

At Fastly, we empower individuals to connect with their passions more effectively. Our cutting-edge edge cloud platform enables clients to swiftly, securely, and reliably create exceptional digital experiences by processing, serving, and safeguarding applications right at the edge of the Internet. This platform is tailored to leverage the modern internet's capabilities, offering programmability and supporting agile software development. Our notable clientele includes leading companies such as GitHub, Yelp, Paramount, and JetBlue.Join us in our mission to build a more trustworthy Internet.Posting Open Date: March 19, 2026Anticipated Posting Close Date*: April 20, 2026*Job posting may close early due to the volume of applicants.About the Role:As a member of Fastly's Traffic Management Systems Team, you will take ownership of the services that globally balance CDN traffic and manage Fastly’s Managed DNS product. We are committed to developing a world-class DNS solution featuring an autonomous control system that leverages real-time data to maintain high availability and performance across our network. We are looking for a technical leader with expertise in designing, building, and operating distributed systems that are scalable, fault-tolerant, and easy to manage. You will be joining a team that provides vital network services relied upon by some of the most popular companies worldwide to enhance their Internet experience.Your Responsibilities:Provide technical leadership for full lifecycle projects, ensuring forward momentum and collaboration with stakeholders.Facilitate effective communication and coordination within the team and across diverse technical and cross-functional teams.Emphasize scalability, security, performance, and reliability in your design and support of applications.Produce clear, maintainable, and efficient code while actively participating in code reviews to enhance the codebase and team processes.Guide and mentor fellow engineers, promoting a culture of knowledge sharing, innovation, and collaboration.Engage in on-call rotation as necessary.

Mar 20, 2026
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companyTrue Anomaly, Inc. logo
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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companyTrue Anomaly, Inc. logo
Full-time|$180K/yr - $260K/yr|On-site|Denver, CO or Long Beach, CA

A new era in space exploration has begun. True Anomaly is on the lookout for talented and ambitious individuals who can develop cutting-edge technology to tackle the next wave of engineering, manufacturing, and operational challenges in space security and sustainability.OUR MISSIONThe peaceful utilization of space is crucial for ongoing prosperity on Earth, impacting areas from communications and finance to navigation and logistics. At True Anomaly, we create innovative technology that integrates spacecraft, software, and AI to enhance the capabilities of the U.S., its allies, and commercial partners. Our commitment is to protect global security by ensuring space access and sustainability for everyone.OUR VALUESBe the offset. We create asymmetric advantages through creativity and ingenuity.What would it take? We challenge assumptions to achieve ambitious results.It’s the people. Our team is our competitive edge, and collaboration makes us stronger.YOUR MISSIONSoftware is the backbone of True Anomaly's engineering and product philosophy. It connects military objectives, theoretical astrodynamics, and the control of spacecraft and ground systems in both time and space. We are in search of an exceptional Staff Elixir Software Engineer to spearhead the technical direction and advancement of our distributed spacecraft ground control system.This role is high-impact and strategic, where you'll define and drive the technical roadmap for our backend systems, lead cross-functional initiatives across engineering, product, and operations, and lay the architectural groundwork that will scale our distributed ground control platform for years to come. You will identify and promote strategic technical investments, advocate for them throughout the organization, and oversee their implementation. Your role extends beyond merely constructing features; you will influence product direction, impact company objectives, and mentor a team of engineers who will develop the next generation of our platform. When you encounter systemic issues affecting reliability, velocity, or quality, you will analyze root causes, build consensus around solutions, and instigate organizational change to resolve them.No prior experience in building space ground systems or aerospace is required. You will lead high-priority, greenfield projects that bear significant importance for the company and have the potential to fundamentally influence future conflicts and the company's trajectory.

Mar 27, 2026
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company360 IT Professionals logo
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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companyStemXpert1 logo
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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companyCheckr, Inc. logo
Full-time|On-site|Denver, Colorado, United States; San Francisco, California, United States

Join Checkr as a Staff Data Engineer, where you will play a pivotal role in enhancing our data infrastructure. Collaborate with cross-functional teams to design data pipelines that support our mission of creating a fairer future through technology. Your expertise will help shape the data landscape, ensuring we provide our clients with valuable insights and operational efficiency.

Mar 31, 2026
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companyDigitalOcean logo
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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companySonderMind logo
Full-time|$160K/yr - $180K/yr|On-site|Denver, CO

About SonderMindAt SonderMind, we are dedicated to ensuring that everyone has access to a personalized, connected, and effective mental health solution for their well-being at any life stage. Our comprehensive care services range from therapy and medication management to meditation and mindfulness practices. Our clinicians utilize cutting-edge digital tools and research to enhance the quality of care and foster successful practices. By merging technology with human connection, SonderMind aims to achieve improved outcomes through our holistic approach. Discover more about us at sondermind.com or download our mobile app available on iOS and Android. Stay updated with our latest news and connect with our community on Instagram, LinkedIn, and Twitter.We encourage our team members to actively use modern AI technologies in their daily tasks and to adapt to emerging tools. Familiarity with relevant AI platforms such as Gemini, ChatGPT, Claude, GitHub Copilot, and other industry-standard productivity tools is essential for success at SonderMind.About the RoleAs a Staff Engineer, you will be responsible for the end-to-end development of features across our backend services, agentic frameworks, AI pipelines, and frontend applications. You will operate with minimal supervision, tackle complex challenges, devise innovative designs and optimizations, and help shape our microservices architecture while collaborating closely with product, design, and QA teams. You will work with high-performance, mission-critical tools and services. While experience in training or developing ML models/algorithms is not mandatory, it is a plus.What You’ll DoDesign, build, and maintain scalable Ruby/Rails, TypeScript/Node, and Python services and RESTful or gRPC APIs integrated with agentic GenAI systems.Optimize MongoDB and PostgreSQL queries and enhance overall service performance.Collaborate with cross-functional squads to outline requirements and deliver features effectively.Engage with AI Agents, MCP servers, and various AI-enabled tools and frameworks, embracing an environment of ambiguity and rapid evolution.

Mar 25, 2026
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companyForge Global logo
Full-time|$155K/yr - $175K/yr|Hybrid|Denver, Colorado, United States

At Forge (NYSE: FRGE), we recognize that our team is our most valuable asset. As pioneers in the private market technology sector, our ambition is to create a brighter future for all. We embody this vision through our core values of being bold, accountable, and humble. We witness the impact of our work daily, supporting the teams behind some of the most significant innovations of our time, including advancements in space exploration and artificial intelligence.With our liquidity solutions, exclusive insights, and a dynamic marketplace, Forge aims to establish an unparalleled technological framework that facilitates a transparent, accessible, and seamless global private market for companies, employees, and investors alike. Through our platform, employees can liquidate their private shares, while employers can provide pre-IPO liquidity to shareholders, allowing both individual and institutional investors to engage in the growth of private unicorns.Forge's unique global marketplace addresses the increasing interest from both individual and institutional investors seeking access to private company stocks, creating a robust network effect.Our capacity to deliver these impactful financial solutions has sparked tremendous interest from investors and driven demand from clients, leading us to expand our team to better serve the needs of more companies, teams, and innovators.The Role:As part of Forge’s quality engineering team, your mission will be to enhance product quality. We pride ourselves on maintaining high standards, focusing on our customers, and upholding our values of being bold, humble, and accountable.We are looking for a Staff Quality Engineer with a minimum of 8 years of experience in managing and ensuring the quality of large-scale, complex financial trading systems. This position will be part of our trading team. We seek a senior, technically adept, and customer-centric candidate who embodies the Forge values. The ideal candidate excels in collaborative environments and is driven by the success of those around them through effective communication, delivering exceptional product experiences, and making data-informed decisions.Location: This position is remote in Denver, CO. Once we establish our office in Denver, we will require hybrid attendance on-site at least 9 days each month.

Jan 22, 2026
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companyTrue Anomaly Inc. logo
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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companyFastly, Inc. logo
Full-time|On-site|Denver, CO; New York City, NY; San Francisco, CA

Fastly seeks a Staff Software Engineer to focus on Edge Protocols. This position involves designing and building new solutions that enhance the edge cloud platform. The work has a direct impact on performance, scalability, and the experience of clients worldwide. Role focus This role centers on developing protocols and systems that support Fastly's edge infrastructure. Engineering decisions here shape how data moves efficiently and reliably across the platform. Impact Solutions built in this role influence the speed and reliability of Fastly's services. Engineers in this area help ensure clients around the globe receive consistent, high-quality performance. Locations Denver, CO New York City, NY San Francisco, CA

Apr 21, 2026

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