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Senior Software Engineer at Otter LLC | Boulder

Otter LLC

Full-time|On-site|Boulder

Join our dynamic team at Otter LLC as a Senior Software Engineer. In this key role, you will leverage your extensive expertise in software development to lead innovative projects, mentor junior engineers, and drive technological advancements. Your contributions will be vital in enhancing our software solutions and ensuring they meet the highest standards of …

Jun 25, 2021

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Senior Sales Associate at Otter LLC | Boulder

Otter LLC

Contract|On-site|Boulder

Join our dynamic team at Otter LLC as a Senior Sales Associate, where you will play a crucial role in driving sales and fostering strong relationships with clients. We are looking for a motivated and results-driven individual with a proven track record in sales to help us achieve our ambitious goals.

Nov 25, 2021

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Sales Development Representative at Otter LLC | Boulder

Otter LLC

Contract|On-site|Boulder

Join our dynamic team at Otter LLC as a Sales Development Representative (SDR). In this role, you will be the first point of contact for potential clients and play a crucial role in driving our sales pipeline. Your primary responsibility will be to identify and engage prospects, qualify leads, and schedule meetings for our sales team. We are seeking an enthusiastic individual with a passion for sales and a desire to develop their career in this field.

Jan 25, 2022

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Senior Python Software Engineer at SciTec | Boulder, Colorado

SciTec, a wholly owned subsidiary of Firefly Aerospace

Full-time|$126K/yr - $175K/yr|On-site|Boulder, Colorado, United States

SciTec, a dynamic leader in non-traditional defense contracting and a proud subsidiary of Firefly Aerospace, brings over four decades of experience in delivering cutting-edge technologies that bolster U.S. National Security and Defense. Our commitment to innovation has led us to develop advanced remote sensing algorithms, tools, and techniques that enable exceptional data exploitation capabilities essential for missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability missions.Important Notice: Please note that all SciTec employees must possess U.S. citizenship as we exclusively engage in U.S. government contracts. Unfortunately, we cannot sponsor or assume sponsorship of work visas of any type, and U.S. citizenship is a prerequisite for obtaining and maintaining a security clearance. Candidates who do not meet this requirement will not be considered.We are currently looking for a highly skilled Senior Python Software Engineer to join our team. In this role, you will be responsible for designing, developing, and sustaining high-quality software systems that enhance advanced analysis and data processing workflows. Your focus will be on distributed systems, microservices, and real-time data pipelines, collaborating closely with scientific and technical users in a mission-driven environment.The ideal candidate will be a strong individual contributor with extensive Python expertise, solid software engineering judgment, and the ability to collaborate across disciplines while providing mentorship and influencing technical direction.

Feb 3, 2026

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Senior Python Software Engineer at SciTec | Boulder, Colorado

SciTec

Full-time|$126K/yr - $175K/yr|On-site|Boulder, Colorado, United States

SciTec, a subsidiary of Firefly Aerospace, brings over 45 years of experience developing technologies for U.S. National Security and Defense. The company focuses on remote sensing algorithms and tools that enable data exploitation for missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability. Role overview The Senior Python Software Engineer will design, build, and maintain software systems that support advanced analysis and real-time data processing. The position emphasizes work on distributed systems, microservices, and streaming data pipelines, key elements for mission-critical operations with the Missile Defense Agency. Projects include automating and orchestrating satellite mission management and missile-tracking workflows. Key responsibilities Lead the design and development of Python software systems Build and maintain distributed systems, microservices, and streaming data pipelines Drive automation and orchestration for satellite mission management and missile-tracking workflows Shape technical direction through architectural leadership and mentorship Take ownership of an evolving software product Collaborate with scientific and technical teams Requirements Extensive experience with Python Strong engineering judgment and ability to work independently Background in distributed systems, microservices, or streaming data pipelines Ability to mentor others and provide architectural guidance Collaborative approach across disciplines U.S. citizenship required (due to government contract work and security clearance requirements) Must be able to obtain and maintain a security clearance No visa sponsorship available Location This position is based in Boulder, Colorado, United States.

Apr 24, 2026

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Senior C++ Software Engineer at SciTec | Boulder, Colorado

SciTec

Full-time|$146K/yr - $175K/yr|On-site|Boulder, Colorado, United States

Join SciTec, a proud subsidiary of Firefly Aerospace, where we are at the forefront of delivering cutting-edge technologies for U.S. National Security and Defense. With over 45 years of experience, we specialize in developing innovative remote sensing algorithms and tools that empower the U.S. Department of Defense with world-class data exploitation capabilities across various missions including missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability.Important Notice: All applicants must be U.S. citizens due to the nature of our government contracts. We are unable to consider applicants who do not meet this requirement.We are currently seeking a talented Senior C++ Software Engineer to join our specialized team in developing Next-Generation Missile Warning software. This is an exceptional opportunity to contribute to vital national defense programs in a dynamic small business environment. You will engage with a fast-paced team dedicated to delivering end-to-end software processing for Overhead Persistent InfraRed (OPIR) sensor data, crucial for missile warning, missile defense, battlespace awareness, and technical intelligence.Your role will involve designing, implementing, and optimizing high-performance software for remote sensor data exploitation and analysis, focusing on hands-on algorithm development within a large, production C++ codebase operating on Linux systems.

Jan 23, 2026

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Senior C++ Software Engineer at SciTec | Boulder, Colorado

SciTec

Full-time|$125K/yr - $162K/yr|On-site|Boulder, Colorado, United States

Join SciTec, a leading subsidiary of Firefly Aerospace, as we pave the way in advanced technologies aimed at enhancing U.S. National Security and Defense. With over 45 years of experience delivering innovative solutions to the Department of Defense, we specialize in developing cutting-edge remote sensing algorithms and tools that play a crucial role in missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability.At SciTec, we are committed to fostering a diverse and inclusive environment. We are currently seeking an experienced Senior C++ Software Engineer to support our Missile Defense Solution software programs. In this dynamic role, you will be immersed in a fast-paced team environment, focusing on the processing of Overhead Persistent InfraRed (OPIR) sensor data for critical missions including Missile Warning and Technical Intelligence. Your expertise in algorithm development and optimization within a substantial C++ codebase on Linux systems will be essential as we strive to deliver world-class software solutions.If you are a seasoned C++ developer who thrives in collaborative settings, values product quality, and is eager to engage in continuous learning and innovation, we want to hear from you!

Apr 7, 2026

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Full Stack Developer

Otter LLC

Contract|On-site|Boulder

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.

Feb 1, 2022

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Senior Mechanical Engineer at Anduril Industries | Boulder, CO

Anduril Industries

Full-time|On-site|Boulder, Colorado, United States

Join our dynamic team at Anduril Industries as a Senior Mechanical Engineer in beautiful Boulder, Colorado. We are at the forefront of defense technology, developing innovative solutions to enhance national security. In this role, you will leverage your extensive engineering expertise to design, test, and implement cutting-edge mechanical systems.

Apr 10, 2026

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Software Engineering Manager at Atom Computing | Boulder, CO

Atom Computing

Full-time|Hybrid|Boulder, CO

About Atom Computing Atom Computing builds quantum computers using optically trapped neutral atoms. The team includes scientists, engineers, and business professionals working to advance quantum technology and expand what computation can achieve. Role Overview The Software Engineering Manager will lead the development of core technologies for Atom Computing's quantum platform. This manager will guide a team of engineers responsible for building the software stack that enables researchers and clients to program, manage, and scale quantum systems. Key Responsibilities Lead and mentor a team of software engineers. Drive the development of external APIs, cloud integrations, and researcher workflows. Shape the technical roadmap for the commercialization of Atom Computing’s quantum solutions. Oversee greenfield software projects at the intersection of distributed systems, cloud infrastructure, high-performance computing, and quantum technologies. Who Should Apply Experienced software architects with a track record in designing and building complex systems. Leaders who can inspire and direct engineering teams. Individuals curious about new technology domains, even without prior quantum computing experience. Location Requirement This role is based in Boulder, CO. Due to hardware needs and on-site collaboration, the position requires at least three days per week in the Boulder office.

Apr 15, 2026

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Software Integration Engineer at SciTec | Boulder, Colorado

SciTec

Full-time|$146K/yr - $172K/yr|On-site|Boulder, Colorado, United States

Join SciTec, a leading subsidiary of Firefly Aerospace, as a Software Integration Engineer. We are a forward-thinking defense contractor committed to enhancing U.S. National Security and Defense through state-of-the-art technology solutions. With over 45 years of experience, we provide innovative remote sensing algorithms, tools, and techniques that empower our Department of Defense clients in critical areas such as missile defense, intelligence, surveillance, reconnaissance, and aircraft survivability.Important Notice: Please note that all employees are required to be U.S. citizens due to the nature of our government contracts, and we are unable to sponsor work visas. U.S. citizenship is also necessary for security clearance purposes. Applications from individuals who do not meet these criteria will not be considered.We are currently seeking an Integration Engineer to play a pivotal role in our Next-Generation Missile Warning software projects. This is a remarkable chance to become a part of a team that is essential to our nation's security. As an ideal candidate, you will possess a broad engineering skill set, be adept at coordinating across teams, and have the capability to integrate various components within a structured Government framework, all while thriving in a fast-paced, collaborative environment.

Feb 13, 2026

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Full Stack Software Engineer at Freeplay | Boulder, CO

Freeplay

Full-time|On-site|Boulder, CO

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.

Jun 27, 2024

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iOS Core Product Software Engineer at Speechify | Boulder, CO

Speechify

Full-time|On-site|Boulder, CO, USA

About the Role Speechify is hiring an iOS Core Product Software Engineer in Boulder, CO. This role focuses on building and improving iOS applications that help people read and listen more easily. The team values creativity and collaboration, and engineers here contribute directly to features that make a real difference for users. What You Will Do Develop and refine core features for Speechify’s iOS apps Work closely with other engineers and product team members Help shape the direction of new and existing app capabilities Location This position is based in Boulder, Colorado.

Apr 25, 2026

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Senior Microfabrication Engineer at Atom Computing | Boulder, CO

Atom Computing

Full-time|On-site|Boulder, CO

Atom Computing builds quantum computers using optically trapped neutral atoms. The team includes scientists, engineers, and business professionals working together to advance quantum technology. Role overview Atom Computing seeks a Senior Microfabrication Engineer to lead process architecture for high-frequency optoelectronic devices. These devices are key to the company’s next-generation quantum computers. This role is based primarily in the COSINC cleanroom at CU Boulder. What you will do Design photolithography masks for novel optical substrates Develop and refine fabrication processes for unique device requirements Integrate device physics with hardware, addressing challenges such as connecting RF signals to precision optics Mentor junior engineers in fabrication techniques and best practices Help expand and improve Atom Computing’s internal microfabrication capabilities Location This position is based in Boulder, CO, with primary work in the COSINC cleanroom at CU Boulder.

Apr 17, 2026

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Senior Software Engineer, Core Experiences

Speechify

Full-time|On-site|Boulder, CO, USA

Join Speechify as a Senior Software Engineer specializing in Core Experiences, where you'll play a pivotal role in enhancing our user interface and overall user experience. In this exciting position, you will collaborate with cross-functional teams to design, develop, and maintain innovative software solutions that engage our users and help them maximize their productivity.We seek a proactive engineer who is passionate about technology and eager to contribute to an agile environment. If you're ready to drive impactful projects and bring your expertise to a dynamic team, we want to hear from you!

Apr 30, 2026

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Senior Hardware Engineer at Atom Computing | Boulder, CO

Atom Computing

Full-time|On-site|Boulder, CO

Join Atom Computing, a pioneering company in the realm of quantum computing, where we leverage arrays of optically trapped neutral atoms to enable our clients to achieve remarkable computational advancements. We are looking for a talented Senior Hardware Engineer to become an integral member of our innovative team of scientists, engineers, and business professionals dedicated to pushing the boundaries of quantum technology.In this role, you will be responsible for the design, verification, and testing of custom electronic assemblies critical to the control system of our quantum computers. This full-time position is based in Boulder, Colorado, and reports directly to the Control Systems Manager. Embrace the opportunity to contribute to groundbreaking work in quantum computing!

May 1, 2026

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Senior Front End Software Engineer

SciTec

Full-time|$120K/yr - $175K/yr|On-site|Boulder, Colorado, United States

Join SciTec, a forward-thinking subsidiary of Firefly Aerospace, where we innovate at the intersection of technology and defense. For over 45 years, we have been at the forefront of supporting U.S. National Security and Defense through cutting-edge remote sensing technologies and advanced algorithms. We develop solutions that empower missile defense, intelligence, surveillance, reconnaissance, and more.Important Notice: All positions at SciTec require U.S. citizenship as we exclusively work on government contracts. We are unable to sponsor work visas, and U.S. citizenship is necessary to obtain a security clearance. Applications from non-citizens will not be considered.We are currently looking for a Senior Front End Software Engineer who is passionate about crafting user-centric web applications. This role focuses on delivering complex, real-time data in an accessible and intuitive manner, ensuring high performance and usability in mission-critical systems.The ideal candidate is an experienced frontend engineer committed to code quality, user experience, and system reliability. You will collaborate closely with backend, platform, and systems engineers to achieve our goals effectively.

Feb 11, 2026

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Senior Software Engineer - Join Our Innovative Team

Suite Studios

Full-time|Hybrid|Boulder Office

About Suite Studios:At Suite Studios, we are a dynamic team dedicated to crafting innovative tools that fuel some of the most exciting creative projects in the world—from Kendrick Lamar’s chart-topping hits to spectacular Super Bowl halftime shows and immersive experiences at the Sphere.Our platform simplifies the process for creative teams to manage, edit, and share extensive media files effortlessly, ensuring seamless collaboration regardless of location. Say goodbye to lengthy downloads and sync complications, and hello to a streamlined workflow that allows artists to stay focused and in the zone.If you are eager to contribute to fast-paced projects with a talented team, we would love for you to join us!

Feb 5, 2025

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Senior Cybersecurity Engineer at SciTec | Boulder, CO

SciTec, a Firefly Aerospace Company

Full-time|$125K/yr - $162K/yr|On-site|Boulder, Colorado, United States

SciTec, a subsidiary of Firefly Aerospace, develops technologies that strengthen U.S. National Security and Defense. For more than 45 years, the team has built advanced remote sensing algorithms, tools, and techniques to support missions in missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability. About the Role The Senior Cybersecurity Engineer will join SciTec’s Boulder, Colorado office. This position focuses on protecting critical systems and contributing to projects that matter for national defense. The work supports a range of programs that require strong cybersecurity expertise. Eligibility Requirement Important Notice: U.S. citizenship is required for all SciTec employees due to government contract obligations. Applications from non-citizens cannot be considered.

Apr 17, 2026

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Senior Software Engineer - Control Systems

Atom Computing

Full-time|Hybrid|Boulder, CO

About Atom Computing Atom Computing builds quantum computers using arrays of optically trapped neutral atoms. The team brings together scientists, engineers, and business professionals focused on advancing quantum technology and expanding what’s possible with computation. Role Overview The Senior Software Engineer - Control Systems will design and develop high-performance control systems for Atom Computing’s next-generation quantum computing platforms. This role involves hands-on work with embedded software, real-time systems, GPU and FPGA acceleration, and hardware orchestration. The goal: create deterministic, high-throughput control pipelines that shape the operational and scaling characteristics of quantum processors. What You Will Do Architect and implement control systems for quantum hardware Work across embedded software and real-time systems Integrate GPU and FPGA acceleration into control pipelines Collaborate closely with theory, software, and hardware teams Influence the performance and scalability of quantum processors Who Thrives Here This position suits engineers who enjoy deep systems work, hardware/software co-design, and performance optimization at the intersection of physics and architecture. Location and On-Site Requirements This role is based in Boulder, CO. On-site presence is required at least three days per week to support collaboration with colleagues across theory, software, and hardware teams. Austin, TX is also an option for on-site work.

Apr 16, 2026

Senior Sales Associate at Otter LLC | Boulder

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