Staff / Senior Staff Full Stack UI Engineer

SciTec, a proud subsidiary of Firefly Aerospace, is a pioneering force in the realm of non-traditional defense contracting, dedicated to delivering cutting-edge technologies that bolster U.S. National Security and Defense initiatives. With over 45 years of experience, our organization has consistently supported Department of Defense clientele by creating innovative remote sensing algorithms, tools, and techniques aimed at enhancing world-class data exploitation capabilities for missions related to missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability.Important Notice: All employees must be U.S. citizens due to the nature of our government contracts. Applicants who do not meet this requirement will not be considered.We are on the lookout for a Full Stack Software Engineer who will be responsible for designing, developing, and maintaining user-facing web applications alongside backend services tailored for real-time data and geospatial information systems. This position emphasizes the creation of dependable, visually engaging, and high-performance applications that function seamlessly in mission-critical contexts.The ideal candidate should possess a strong capability to navigate the entire stack—from frontend user interfaces to backend data processing pipelines—and excel in a collaborative, Agile development setting.ResponsibilitiesDesign, develop, and maintain both frontend and backend software, encompassing code, tests, and documentation.Build and integrate user interfaces along with data pipelines for real-time and geospatial data visualization.Design, prototype, and implement user-centric interfaces that effectively translate customer needs into intuitive solutions.Maintain and enhance 24/7 user-facing applications that manage, display, and monitor real-time data.Identify and rectify software defects and security vulnerabilities.Collaborate with team members during Agile ceremonies, including standups, sprint planning, and retrospectives.Contribute to architectural discussions and technical design decisions.Ensure adherence to software engineering best practices, including code quality, testing, and maintainability.Support documentation and knowledge sharing across teams.Perform other duties as assigned.

Join SciTec, a dynamic and innovative subsidiary of Firefly Aerospace, as we push the boundaries of technology in support of U.S. National Security and Defense. For over 45 years, we have been at the forefront, providing advanced solutions that enhance missile defense, intelligence, surveillance, reconnaissance, and aircraft survivability missions.Note: All applicants must be U.S. citizens due to the nature of our government contracts.We are seeking a skilled Staff Systems Engineer to join our team in Boulder, Colorado. This is an exceptional opportunity to contribute to the development of Next-Generation Missile Warning software. You will collaborate with a dedicated team, focusing on the complete software processing of Overhead Persistent InfraRed (OPIR) sensor data, enhancing capabilities for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence. If you are passionate about tackling engineering challenges that impact national security, we want to hear from you!

Location: Onsite in Boulder, COAbout UsAt Foresight Diagnostics, we are pioneering advancements in non-invasive cancer detection through our cutting-edge liquid biopsy technologies that utilize highly sensitive, cell-free DNA. Our proprietary methods, originally conceived at Stanford University, empower earlier detection of smaller tumors, facilitating personalized and effective cancer treatment strategies.Our operations blend molecular biology, bioinformatics, and next-generation sequencing (NGS), transforming scientific innovation into impactful clinical solutions. As we expand, we've established robust laboratory operations and effective cross-functional collaboration, ensuring clinical development and long-term commercial readiness.Foresight Diagnostics fosters a collaborative and accountable work culture where quality, precision, and continuous improvement are integral to our mission. Team members enjoy the chance to contribute to meaningful programs, collaborate with seasoned scientific and operational leaders, and advance professionally within a well-resourced organization dedicated to its mission.Position OverviewWe are looking for a Senior Full Stack Software Engineer who possesses strong Python expertise, frontend skills (preferably in React), and backend experience with relational databases (PostgreSQL is preferred). In this role, you will play a vital part in designing, developing, and maintaining full-stack software solutions that support our research, product development, and clinical testing operations. A solid understanding of NGS laboratory workflows and data management is highly advantageous.This position is onsite in Boulder, CO and does not offer remote or hybrid options. Candidates must either be local to Boulder or willing to relocate before commencing work.Key ResponsibilitiesDesign and develop full-stack applications utilizing React for the frontend and Python for the backend, with an emphasis on database management.Collaborate closely with scientists, laboratory personnel, and business stakeholders to transform complex requirements into practical, production-ready software solutions.Participate in architectural decisions, system design reviews, and sprint planning as part of a collaborative software development team.Ensure that software meets high standards for quality, reliability, and performance.

The Trade Desk is looking for a Senior Full Stack Software Engineer to join the Omnichannel division. This position centers on designing and building software that enhances user experiences across a range of platforms. Projects involve both web applications and integrated advertising technology. Key responsibilities Collaborate with engineering, product, and design teams to deliver applications for the omnichannel platform Develop and maintain software that integrates with The Trade Desk’s advertising technology stack Work on both front-end and back-end systems to support seamless user interactions Locations This role is open in Bellevue, Boston, Boulder, Chicago, Denver, Irvine, Los Angeles, New York, San Francisco, San Jose, Seattle, and Ventura.

Location: Onsite in Boulder, CO. This position requires working at the Boulder office; remote or hybrid work is not available. Candidates should already be local or plan to relocate before starting. Role overview Foresight Diagnostics seeks a Senior Full Stack Software Engineer with strong Python skills and frontend experience in React. The role centers on designing, developing, and maintaining software that supports research, product development, and clinical testing. Experience with relational databases, especially PostgreSQL, is preferred. Familiarity with next-generation sequencing (NGS) laboratory workflows and data management is a plus. What you will do Design and build full-stack applications using React for the frontend and Python for the backend, with an emphasis on relational database storage. Work closely with scientists, lab staff, and business stakeholders to turn complex requirements into practical, production-ready software. Contribute to architectural decisions, participate in system design reviews, and join sprint planning sessions as part of a collaborative software development team. Maintain high standards for software quality and performance. Requirements Expertise in Python development. Frontend proficiency with React. Experience working with relational databases; PostgreSQL preferred. Ability to work onsite in Boulder, CO. Understanding of NGS laboratory workflows and data management is advantageous.

Are you a passionate Data Engineer ready to join a dynamic team? At CampMinder, we are looking for a Staff Data Engineer who will play a critical role in shaping our data infrastructure and analytics capabilities. You will collaborate closely with cross-functional teams to design, build, and maintain data pipelines that support our business goals. If you thrive in a fast-paced environment and are eager to work with advanced data technologies, we want to hear from you!

WHO WE ARETIFIN is at the forefront of revolutionizing the wealth management landscape. Our innovative platform enables financial institutions to streamline operations through intelligent workflows tailored for investors, advisors, investment teams, and operations personnel. By harnessing finance-native AI, specialized data, and robust enterprise controls, we empower our clients to enhance client service and achieve superior outcomes, all while optimizing resource utilization.WHAT SETS US APARTAgility: We pride ourselves on rapid development cycles, delivering MVPs in approximately three months and production-ready solutions in six to twelve months.Proven Success: Our previous ventures include 55ip (acquired by J.P. Morgan) and Paralel Technologies.Strategic Collaborations: We partner with industry leaders such as J.P. Morgan, SEI, Franklin Templeton, Morningstar, Broadridge, Motive Partners, and Tectonic Ventures.Expert Team: Our team combines unparalleled expertise in AI and financial services, with backgrounds from top-tier companies like Google, Microsoft, and BlackRock.OUR VALUESGrowth Mindset: We embrace personal development and encourage stepping outside of our comfort zones, fostering a culture of self-awareness and integrity.Authentic Communication: We prioritize honest, precise communication to foster shared understanding and collaborative problem-solving.Team Success: We focus on leveraging our strengths and holding ourselves accountable for results, always aiming for continuous improvement.ROLE OVERVIEWAs we expand our AI platform, we are developing advanced multi-agent systems that enhance advisor capabilities, streamline investment workflows, and enable autonomous research functionalities. We are looking for a Staff AI Engineer to architect, develop, and optimize these systems at scale. This is a hands-on, high-impact engineering role with a primary focus on deploying reliable, enterprise-grade AI systems into production.PROJECTSAdvisor Copilot (Multi-Agent Systems)

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.

At Upbound, we are revolutionizing the construction of modern infrastructure for the Agentic AI Era. As the primary creators and maintainers of Crossplane, we are developing the Intelligent Control Plane—a next-generation platform layer designed to make infrastructure programmable, autonomous, and composable.Our mission is to empower AI-native enterprises with a foundational platform layer that enables teams to provision, operate, and adapt infrastructure at scale—ensuring platforms are optimized for both human and AI agents. We collaborate with leading cloud providers, ISVs, and open-source communities to facilitate faster, more confident organizational growth.Currently, Upbound supports Fortune 500 companies and platform engineers in over 100 countries. Crossplane has achieved over 100 million downloads and is actively utilized by more than 1,000 teams globally. We are a Series B company, backed by GV (formerly Google Ventures), Altimeter Capital, and Intel Capital, having successfully raised $69 million to date. Discover more about us at upbound.io.As a Staff Solutions Engineer (SE) at Upbound, you will play a crucial role in our pre-sales team. This position will support all pre-sales initiatives in North America across various segments. Following the qualification of leads, the Solutions Engineer will collaborate directly with customers to understand their technical business challenges. You will guide customers in recognizing the value that Upbound products and solutions provide. Solutions Engineers establish trustworthy technical relationships with our clients by actively listening and effectively communicating the value proposition of our offerings in a manner tailored to each customer’s specific needs.Solutions Engineers possess an in-depth understanding of Upbound’s product roadmap and will demonstrate the ability to anticipate customer needs, knowing when to promote upcoming solutions versus focusing on existing offerings based on the customers' medium- to long-term visions. They are expected to have a profound comprehension of the key technical and economic decision-makers and what it takes to secure buy-in for our innovative solutions.

About FreeplayAt Freeplay, we empower software teams to seamlessly launch exceptional AI products. Our platform enables product development teams to effectively test, assess, monitor, and enhance AI in real-world applications. From dynamic startups to Fortune 100 enterprises, our customers leverage Freeplay to refine LLM features, chatbots, and intelligent agents.The Need for FreeplayWhile interacting with ChatGPT may appear straightforward, creating production-grade software utilizing LLMs presents considerable challenges, particularly for teams lacking prior AI expertise. These teams are eager to accelerate their learning journey and prioritize delivering tangible value to their customers.Freeplay simplifies this journey, enabling teams to swiftly and confidently develop and refine production-ready AI features. Our clients appreciate how we help them save time, sidestep costly errors, enhance their offerings, and empower every team member—engineers and non-engineers alike—to collaborate and deliver faster.Discover more about our initiatives on our blog.Your RoleDevelop and Deliver Software: Architect, create, and sustain foundational infrastructure and features across our comprehensive stack—from user-friendly front-end interfaces to robust backend systems that drive our AI testing and evaluation platform.Influence Technical Strategy: Assess and implement technologies, tools, and best practices while profoundly shaping our technical architecture. Participate in strategic decision-making regarding the construction of reliable systems interfacing with AI components.Prioritize User Experience: Keep the end-user at the forefront of all development stages, ensuring our platform is both intuitive and powerful for teams working with AI, while providing a seamless experience across all functionalities.Collaborate with the Founding Team: Partner closely with our founding team to brainstorm, prototype, and deliver innovative solutions that meet user needs and generate value for our customers.Cultivate Engineering Culture: Establish rigorous testing protocols, code reviews, and continuous integration practices to uphold superior quality in production-ready code while minimizing technical debt.

Join Otter LLC as a Full Stack Developer, where you will play a pivotal role in crafting innovative web applications. You will leverage your expertise in both front-end and back-end development to deliver robust, scalable solutions that enhance user experience. Collaborate with cross-functional teams to design, develop, and maintain high-quality software that meets our clients' needs.

At SciTec, we are a forward-thinking small business dedicated to advancing sensor data processing technologies and scientific instrumentation, with a focus on supporting National Security and Defense initiatives. As we expand our talented team, we are on the lookout for creative individuals who can contribute to our mission. We partner with various clients within the Department of Defense and the U.S. Government to develop innovative tools that provide unparalleled data exploitation capabilities.Important Notice: Please note that SciTec exclusively engages in U.S. government contracts that mandate U.S. citizenship for all employees. We are unable to sponsor or assume sponsorship for any employee work visas. Additionally, U.S. citizenship is essential for obtaining and retaining a security clearance. Candidates who do not meet these criteria will not be eligible for consideration.As part of our growth, we seek motivated Staff and Senior Staff DevSecOps Engineers who are eager to make a significant impact—not just through code, but through meaningful work. If you are passionate about tackling complex challenges that have real-world significance, we would love to hear from you!

Join SciTec, a forward-thinking subsidiary of Firefly Aerospace, where we are redefining the landscape of defense contracting by delivering cutting-edge technologies that bolster U.S. national security and defense initiatives. For over 45 years, we have been at the forefront of innovation, providing the Department of Defense with advanced remote sensing algorithms, tools, and techniques that enhance data exploitation capabilities for critical missions including missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability.Important Notice: All employees at SciTec must be U.S. citizens, as we exclusively engage in government contracts that require citizenship to obtain and maintain security clearance. We do not sponsor work visas of any kind, and applicants who do not meet these criteria will not be considered.As we expand, we seek passionate and mission-driven Staff and Senior Staff DevSecOps Engineers who are eager to make a significant impact—beyond just code. If you thrive on tackling complex challenges that matter, we invite you to be part of our team.

SciTec, a dynamic subsidiary of Firefly Aerospace, specializes in advanced technologies that bolster U.S. National Security and Defense. For over 45 years, we've empowered Department of Defense customers by pioneering innovative remote sensing algorithms, tools, and techniques. Our work enhances data exploitation capabilities across critical missions, including missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability.Important Notice: SciTec solely engages in U.S. government contracts, necessitating U.S. citizenship for all employees. We are unable to sponsor or assume sponsorship of employee work visas of any kind. U.S. citizenship is also required to obtain and maintain a security clearance. Applicants who do not fulfill these criteria will not be considered.We are currently seeking experienced Staff and Senior Staff Cybersecurity Engineers to join our team.

Join Otter LLC as a Full Stack Developer Intern specializing in React JS! This internship provides a unique opportunity to work on exciting projects that shape the future of technology.As a Full Stack Developer Intern, you will collaborate with a team of talented engineers, gaining hands-on experience in both front-end and back-end development. You will learn to solve complex problems and contribute to the development of innovative web applications.

Join SciTec, a leading non-traditional defense contractor dedicated to advancing U.S. National Security and Defense. With over 45 years of experience, we have consistently supported the Department of Defense by developing cutting-edge remote sensing algorithms, tools, and techniques that enhance missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability missions.Important Notice: All SciTec employees must be U.S. citizens due to our exclusive focus on U.S. government contracts. Applications from non-citizens will not be considered.We are currently seeking a skilled engineer to join our team and contribute to the development of Next-Generation Missile Warning software. This role offers a unique chance to work within a small, agile team that plays a critical role in national defense. You will be responsible for processing Overhead Persistent InfraRed (OPIR) sensor data for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence.As a Staff or Senior Staff Rust Software Engineer, you will design, implement, and enhance high-performance software systems in a secure and mission-driven environment. This position is ideal for an experienced engineer who excels in independent work on complex technical challenges, contributes to system architecture and design, and collaborates effectively with cross-functional teams.

SciTec, a subsidiary of Firefly Aerospace, develops technologies for U.S. National Security and Defense. With over forty years in the field, the team specializes in remote sensing algorithms and data exploitation, supporting areas such as missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability. Important Notice: Only U.S. citizens may apply, as required by government contracts. Applications from non-citizens cannot be considered. Role overview This Staff or Senior Staff Rust Software Engineer position is based in Boulder, Colorado. The role centers on building Next-Generation Missile Warning software, processing Overhead Persistent InfraRed (OPIR) sensor data to support missions including Missile Warning, Missile Defense, and Battlespace Awareness. What you will do Design, build, and enhance high-performance software systems using Rust Work in a secure environment focused on national defense Collaborate with a multidisciplinary team to address technical challenges Contribute to architectural decisions for mission-critical software Process and analyze OPIR sensor data for various defense applications Requirements Experience with Rust and high-performance systems Ability to work independently and solve complex technical problems Strong collaboration and communication skills across teams Commitment to supporting national security missions

Join SciTec, a pioneering force in advanced technology and defense solutions, where we are dedicated to supporting U.S. National Security and Defense. As a proud subsidiary of Firefly Aerospace, we have a rich legacy of over 45 years in delivering innovative remote sensing algorithms, tools, and techniques that enhance data exploitation capabilities for our Department of Defense clients.Important Notice: Please be aware that all positions at SciTec require U.S. citizenship due to the nature of our government contracts. We cannot provide visa sponsorship for employment. Additionally, U.S. citizenship is necessary to obtain and maintain a security clearance. Applicants who do not meet these criteria will not be considered.We are currently seeking a skilled software test engineer to play a vital role in our team, contributing to the development of Next-Generation Missile Warning software. This is a remarkable chance to be part of a compact yet dynamic business that delivers essential capabilities for national defense. You will collaborate with a fast-paced team, engaging in end-to-end software processing of Overhead Persistent InfraRed (OPIR) sensor data, which is critical for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence initiatives. This position is based on-site in Boulder, CO.Responsibilities:Decomposing functional requirements to align with system and domain-level needsCreating comprehensive test plans and casesExecuting tests across multiple environments and supporting test executionDeveloping automated testing suitesParticipating in reviews of test engineering artifactsConducting performance analyses, risk assessments, and trade studiesMaintaining test documentation following management protocolsCompleting tasks to meet program schedule milestonesAdditional responsibilities as assignedQualifications:Bachelor's degree in physical sciences, mathematics, engineering, or computer scienceA minimum of 3 years of experience in software test engineering rolesAt least 1 year of experience in software development or test automation, preferably using PythonStrong team collaboration skillsExcellent verbal and written communication abilitiesMeticulous attention to detailAbility to obtain and maintain a DoD security clearancePreferred Qualifications:Experience testing Overhead Persistent InfraRed (OPIR) processing systemsFamiliarity with formal requirements verification for government programsExperience with Model-Based Systems Engineering (MBSE)An active DoD security clearance*Resumes, Cover Letters, and Applications generated by AI will not be considered for employment.

SciTec, a proud subsidiary of Firefly Aerospace, stands at the forefront of defense technology as a leading non-traditional defense contractor. With a rich history spanning over 45 years, we are dedicated to advancing U.S. National Security and Defense through innovative solutions. Our expertise lies in developing cutting-edge remote sensing algorithms, tools, and techniques that empower our Department of Defense clients with unparalleled data exploitation capabilities for missions related to missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and enhancing aircraft survivability.Important Notice: Please note that SciTec operates exclusively on U.S. government contracts, necessitating U.S. citizenship for all employees. Applications from candidates who do not meet this criterion will not be considered.We are on the lookout for a talented Staff or Senior Staff Systems Engineer to contribute to the design, integration, and certification of mission-critical defense systems. This position focuses particularly on tactical data links, remote sensor data processing systems, and maintaining rigorous systems engineering standards. You will collaborate closely with software developers, program managers, and external stakeholders to ensure seamless project execution.

Join SciTec, a leading non-traditional defense contractor that is part of Firefly Aerospace, where we harness cutting-edge technologies to bolster U.S. National Security and Defense efforts. For over 45 years, we have proudly served Department of Defense clients by crafting innovative remote sensing algorithms, tools, and techniques that deliver superior data exploitation capabilities for missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability missions.Important Notice: All our projects are aligned with U.S. government contracts, necessitating U.S. citizenship for all employees. SciTec cannot offer sponsorship for work visas. U.S. citizenship is also required to secure and maintain a security clearance. Applicants not meeting these criteria will not be considered.We are excited to announce an immediate opening for a skilled software engineer to join our team, focusing on Next-Generation Missile Warning software development. This is a rare chance to become part of a dynamic small business that plays a crucial role in National Security and Defense. Our teams specialize in image analysis, low-latency data processing, and developing detection and tracking algorithms for the effective exploitation of remote sensing systems. The ideal candidate is a versatile C++ developer who thrives in a fast-paced, collaborative environment, with the capability to prototype, develop, integrate, and test advanced software solutions within Government frameworks.