Full Stack Software Engineer

About BLENThe BLEN team is dedicated to harnessing the power of technology to address real-world challenges. With over 20 years of experience, we have been at the forefront of helping government entities and businesses evolve their digital landscape. We infuse innovative thinking into each project, whether it's revitalizing outdated systems, developing cloud-native applications, or exploring emerging technologies. Our emphasis on building lasting partnerships enables us to tackle complex issues by prioritizing human-centered design in all our solutions.About the RoleAs a Senior Software Developer at BLEN, you will be instrumental in crafting robust and efficient digital solutions. You will leverage your extensive expertise in both front-end and back-end technologies, along with your leadership capabilities, to drive projects from initial concept through to successful implementation. Our engineering team is responsible for making critical technical decisions, ensuring effective communication with all stakeholders, and utilizing state-of-the-art technologies to deliver high-quality solutions. You will play a key role in ensuring that our products not only meet client specifications but also align with overarching business objectives while maintaining exceptional standards of performance and scalability.

About BLENAt BLEN, we are driven by a passion for leveraging technology to address real-world challenges. For over two decades, we have partnered with government entities and businesses to enhance their digital transformation journeys. Our innovative approach encompasses everything from updating legacy systems to crafting cutting-edge cloud-native applications, as well as exploring emerging technologies. We prioritize building lasting partnerships and putting human experience at the forefront of our projects. Our team excels in transforming complex problems into practical, accessible, and high-performance solutions.Position OverviewAs a Senior Full Stack Software Developer II at BLEN, you will play a pivotal role in the design, architecture, and development of scalable and robust digital solutions. This position requires a blend of extensive technical skills in both front-end and back-end technologies, along with the capability to collaborate closely with technical leads and, at times, assume tech lead responsibilities. You will be expected to adopt a strategic mindset, mentor fellow team members, and deliver impactful solutions while taking ownership of your work. A strong background in cloud services, system architecture, AI tooling, and a strong drive for innovation through prototyping and transforming concepts into production-ready features is essential for success in this role.

At Stoke, we envision a flourishing space economy as a catalyst for a sustainable, equitable future on Earth. This is why we are developing Nova, our state-of-the-art, fully reusable launch vehicle, engineered for daily flights. Nova addresses the fundamental challenges of space transportation by significantly reducing costs, enhancing availability, and boosting reliability. By drastically lowering launch expenses and increasing flight frequency, we are paving the way for a truly scalable space industry.Our team is driven by a shared mission, thrives on collaboration, and is empowered to take full ownership of their contributions. If you are eager to work alongside some of the most dedicated and talented individuals in the industry, we would be thrilled to welcome you aboard.Position OverviewReusable launch systems are essential for seamlessly bridging Earth and space. A vital component of creating reusable launch vehicles is speed—this is our mission for Boltline by Stoke Space, our cutting-edge software platform designed to assist advanced hardware manufacturing teams in integrating, tracking, iterating, building, and testing efficiently.As a Senior Full-Stack Software Development Engineer on the Boltline team, you will be responsible for designing, developing, and maintaining scalable end-to-end features—from intuitive front-end interfaces to robust backend systems. You will work closely with designers, product managers, and hardware teams to create tools that drive innovation in advanced hardware development. The ideal candidate will exhibit a strong sense of ownership, technical proficiency, and a thirst for knowledge—effectively balancing rapid execution with thoughtful engineering.

Metrostar Systems is looking for a Senior Full Stack .NET Developer in Washington, DC. This position centers on designing and building software solutions that support client projects and business goals. Role overview As a Senior Full Stack .NET Developer, you will collaborate with colleagues from different disciplines to deliver applications that align with client requirements. The work involves both front-end and back-end development, using .NET technologies as a foundation. What you will do Design, develop, and implement software using .NET frameworks Work with cross-functional teams throughout the project lifecycle Apply modern development practices to create scalable solutions Contribute to cloud-based application development as needed What we value Metrostar emphasizes creativity and technical skill. The team encourages new ideas and high standards in software development. Experience with .NET, cloud services, and up-to-date engineering methods is important for success in this role.

Join us as a Senior Full Stack Developer I to play a pivotal role in a high-profile, AI-driven financial compliance program for the Department of War. This essential initiative is focused on modernizing compliance and audit workflows for over 180 systems. You will be responsible for architecting and securing the deployment infrastructure that supports AI-assisted compliance validation, semantic search, and enterprise governance within restricted Department of War environments.This position offers a hybrid work model, with a preference for candidates based in the D.C. metro area who can participate in in-person meetings as necessary.At MetroStar, we believe that exceptional technology services are built from the ground up by amazing individuals. For over two decades, we have cultivated a legacy of assembling the brightest teams. Our commitment to our people is unwavering, as we are driven by a mission that emphasizes a passion for our people and a dedication to our customers.If you see yourself contributing to our mission and helping us achieve our goals, we encourage you to explore the details of this opportunity below!

About HelionHelion is a pioneering fusion energy company located in Everett, WA, dedicated to the ambitious mission of constructing the world's first fusion power plant. Our goal is to facilitate a future powered by limitless clean energy, ensuring reliable and affordable electricity for all.Founded in 2013, Helion has successfully secured over $1 billion in funding from esteemed investors including Sam Altman, Mithril, Capricorn Investment Group, as well as new partners like SoftBank and Lightspeed, propelling our innovative endeavors forward. Our latest prototype, Trenta, has achieved remarkable milestones, completing 10,000 high-power pulses and reaching plasma temperatures of 100 million degrees Celsius (9 keV). We are currently advancing with Polaris, our next prototype, on the journey toward realizing the world's first fusion power plant.This is a critical moment to join Helion, where you will confront real-world challenges alongside a team that values urgency, thoroughness, accountability, and a commitment to transparency—principles vital to achieving unprecedented energy solutions. Together, we will reshape the future of energy, because the world cannot afford to wait.Your ResponsibilitiesAs a Senior Full Stack Software Engineer, you will be responsible for designing, developing, and operating secure, dependable, scalable, and user-friendly full-stack applications that enhance processes across mechanical and electrical engineering, supply chain, inventory management, manufacturing, and finance. You will integrate these applications with our internal data platform and external systems, playing a high-impact role within a cross-functional team dedicated to business-critical applications that amplify the effectiveness of various departments throughout the organization.Your Key Contributions Will Include:Designing and developing front-end interfaces, APIs, workflows, database architectures, and caching strategies.Operating as a part-time product manager and UX designer, gaining insights into user interactions and workflow processes.Monitoring and continuously enhancing system performance and reliability using leading observability tools.Collaborating with software engineers, data analysts, scientists, engineering teams, business leaders, and vendors to comprehend feature and data requirements and deliver effective solutions.Staying updated on emerging technologies while recommending proven solutions that align with strategic objectives.Participating in on-call rotations to uphold our service-level agreements and prevent interruptions in round-the-clock production schedules.

Senior Full Stack Software EngineerJoin AZX, a pioneering company dedicated to driving positive transformation in vital sectors through advanced AI solutions.We are rapidly expanding our reach, collaborating with industry leaders in real estate, energy, logistics, and utilities.As a public benefit corporation established in 2024, we have achieved profitability from day one by leveraging our consulting expertise.Our focus areas include clean energy innovation, decarbonization efforts, climate risk assessment, energy systems, and global economic strategies. We are committed to creating a workplace that attracts those who share our passion for AI and impactful change.Role OverviewWe are looking for a Senior Full Stack Software Engineer who will play a crucial role in delivering exceptional solutions to our clients and enhancing our internal platform. As one of the initial full-time engineers, your contributions will significantly shape our development process.You will engage in diverse projects, ranging from enterprise-level applications to rapid innovation cycles, while we simultaneously invest in our platform to enhance client value.Be part of a team led by seasoned professionals from the climate and AI sectors, including experts from Microsoft, AI2, ARM, and notable startups, as well as PhD-level researchers and former executives.Key ResponsibilitiesTransform vague client challenges into functional code.Lead projects from initial discovery through to deployment.Work collaboratively with both client and internal teams.Write clean, scalable, and maintainable code that meets quality standards.Incorporate AI technologies into our solutions, including analytical models and digital twins.Foster interdisciplinary collaboration.Promote engineering best practices and a positive development culture.

Aerostrat is seeking a Senior Full-Stack Software Engineer in Seattle. This position involves leading projects that influence the direction of our technology. The role calls for experience in both front-end and back-end development, with a focus on building applications that serve users effectively. Role overview As a Senior Full-Stack Software Engineer, you will work with teams across disciplines to design and implement scalable solutions. The position emphasizes collaboration and a commitment to refining our development processes. What you will do Lead and contribute to key software projects from concept to delivery Develop and maintain both front-end and back-end components Work closely with cross-functional teams to ensure applications meet user needs Help drive improvements in our engineering practices Requirements Strong background in full-stack development Experience building scalable web applications Ability to collaborate effectively with diverse teams

Key Responsibilities:Engage with business partners to offer strategic insights on technology choices, including system design and modifications.Collaborate with development and project teams to devise technical resolutions for intricate challenges.Establish and uphold standards for design, development, testing, and documentation, ensuring high-quality, dependable systems that align with business objectives.Define the scope, objectives, and technical direction for new or modified web applications, leading the analysis, design, development, and implementation processes.Provide mentorship and technical guidance to junior developers.Ensure that application design aligns with the overarching vision and future state of existing systems.Experience Requirements:Minimum of 7 years of hands-on experience with the Microsoft .NET framework and C#.Over 1 year of experience with Web API and Entity Framework preferred.Experience with AWS and building disconnected applications using MSMQ is a plus.Proficiency in Windows PowerShell scripting preferred.Solid understanding of application architecture in .NET/Service Oriented models, .NET framework, CLR, and VS.NET for over 7 years.Extensive experience with Microsoft SQL Server, SSIS, and complex SQL stored procedures (7+ years).In-depth knowledge of design patterns and object-oriented design principles (7+ years).Experience with Git and Team Foundation Server preferred.Technical expertise in operating systems, software integration, systems design, and development methodologies, including business requirements analysis.Proven track record of successful project leadership (4 years).Experience in an Agile/Scrum development environment (1+ years).Preferred: Experience with Azure ServiceBus, DocumentDB, nServiceBus, MSMQ.

At NiCE, we redefine our boundaries, constantly pushing ourselves to achieve greater heights. We are driven by ambition, innovation, and a desire to excel. If you share our passion for excellence, we invite you to explore a career that ignites your potential.The Opportunity:As we expand our U.S.-based Research & Development team, we are in search of talented Senior Full Stack Software Engineers ready to elevate our offerings. This position is not for those who are content with the status quo. We are assembling a select group of elite full-stack engineers who integrate AI-assisted development as a fundamental aspect of their work, enabling them to surpass traditional development teams in delivering high-quality software rapidly and intelligently.In this role, you'll engage with a contemporary full-stack environment, contributing to NiCE’s innovative suite of AI-driven customer experience solutions. If you thrive in a dynamic product landscape and understand that the best code is the code that is deployed, this is the perfect team for you.Your Impact:Develop comprehensive features using a Node.js/TypeScript or Go backend alongside a React + TypeScript frontend, spanning from architecture to deployment.Drive AI-assisted development by utilizing tools like Claude Code and OpenAI Codex as integral components of your daily workflow, rather than an afterthought.Enhance the Software Development Life Cycle (SDLC) by creating and implementing AI-augmented development processes that effectively reduce cycle times, automate repetitive tasks, and enhance code quality.Establish team standards by sharing technical guidelines, fostering a culture of code reviews, and promoting best practices that shape the team's operations.Engage collaboratively with product managers, designers, and fellow engineers in a fast-paced, team-oriented environment where your contributions are valued.Take ownership of your projects from initial concept through to deployment, ensuring reliability, performance, and user satisfaction.

Join our dynamic team at Sonsoft Inc. as a .NET Full Stack Developer. We are seeking a talented and driven individual who is passionate about technology and innovation. In this role, you will work on exciting projects, bringing your expertise in both front-end and back-end development to create robust applications.This position requires a solid understanding of the .NET framework, as well as proficiency in modern web technologies. You will collaborate with cross-functional teams to design, develop, and maintain scalable software solutions that meet our clients' needs.

Why join usAt Brex, we are revolutionizing the way companies manage their spending with our AI-driven platform. Our integrated solutions encompass corporate cards, banking, and global payments, enhanced by user-friendly software for travel and expense management. Trusted by a diverse range of businesses, from startups to established enterprises like DoorDash, Flexport, and Compass, Brex empowers organizations to take control of their spending, optimize costs, and boost efficiency on a global scale.Joining Brex means pushing your boundaries, challenging conventional thinking, and collaborating with some of the brightest talents in the industry. We are dedicated to fostering a diverse workforce and an inclusive culture, believing that your potential is only limited by your ambition. We provide the necessary tools, resources, and support to help you elevate your career.Engineering at BrexEngineering at Brex focuses on building scalable systems with purpose and speed. Our teams, which include Software, Data, Security, and IT, operate with high autonomy and strong collaboration. We tackle challenging technical problems, take ownership of our results, and strive for excellence at every stage—from architecture to deployment. It’s a setting where engineering is an art, and builders evolve into leaders.Your RoleAs a Senior Full-Stack Software Engineer on the Task Workflows Platform team, you will develop and enhance the foundational infrastructure that drives core experiences across Brex. Your work will span our comprehensive suite of platforms, including our multi-channel notifications engine, collaborative commenting system, and dynamic workflow rule builder. You will play a critical role in advancing our task orchestration infrastructure, transitioning from a centralized model to specialized solutions tailored to distinct product domains.You'll face intricate full-stack challenges, designing scalable backend APIs and rule-evaluation engines for custom automations, all while creating intuitive frontend user experiences for our task interfaces and workflow builders. Additionally, you will contribute to shaping broader product experiences, utilizing AI to optimize user workflows and supporting the continuous enhancement of our productivity tools across web and mobile platforms.Work EnvironmentThis position is based in our Seattle office. We embrace a hybrid work model that blends the dynamic interaction of office life with the flexibility of remote work. Currently, we require at least three coordinated in-office days each week, specifically on Monday, Wednesday, and Thursday.

Join our innovative team at Bluesight as a Senior Full Stack Software Engineer, where you'll be at the forefront of developing cutting-edge software solutions that enhance operational efficiency and deliver exceptional user experiences. We are looking for a tech-savvy individual who thrives in a collaborative environment and is eager to tackle complex challenges.As a Senior Full Stack Software Engineer, you will leverage your expertise in both front-end and back-end technologies to build scalable applications. Your role will be pivotal in shaping our product architecture and ensuring seamless integration with various services. You will collaborate closely with cross-functional teams to define requirements, develop solutions, and implement best practices in software development.

Join our dynamic team at Sonsoft Inc. as a .NET Full Stack Developer! We are looking for a talented and motivated developer who is passionate about building high-quality software solutions. The ideal candidate will have a strong background in both front-end and back-end development, with a focus on .NET technologies.

Join our dynamic team at Aristotle as a Senior Full-Stack Developer, where you will leverage your expertise in designing and architecting sophisticated, data-centric systems. In this pivotal role, you will create and implement innovative applications, APIs, and services that manage large quantities of both structured and unstructured data. Your proficiency with AI and ML techniques—such as machine learning pipelines, natural language processing, and large-scale text analysis—will play a crucial role in advancing our technology for the future.Key ResponsibilitiesDesign, develop, and rigorously test applications utilizing Microsoft .NET, C#, ASP.NET, MS SQL Server, and modern front-end frameworks like Angular or comparable technologies.Build and sustain RESTful APIs and services that can effectively manage scalable, high-throughput data flows.Integrate cutting-edge technologies, focusing on AI/ML frameworks, NLP toolkits, and cloud-based data processing.Devise solutions for ingesting, transforming, and analyzing extensive datasets and texts.Contribute to architectural strategies, including microservices and distributed systems design.Create and configure CI/CD pipelines to ensure seamless integration and delivery.Provide ongoing production support for applications and services, including maintaining legacy systems.Document systems and processes to ensure continuity and scalability.Collaborate with stakeholders to analyze requirements and contribute to both functional and technical specifications.Mentor team members, conduct code reviews, and advocate for best practices in software development.

About UsIntegrate is a pioneering software company headquartered in Seattle, dedicated to developing innovative program management solutions for cutting-edge technologies, including robotics, autonomous vehicles, and aerospace engineering. We streamline collaboration across organizations within the deep tech sector, allowing teams to work with external partners and stakeholders as effortlessly as they collaborate internally. Our goal is to transform the way businesses interact in the burgeoning deep tech landscape by minimizing communication barriers and reducing workload. Our SolutionCurrent software offerings often fall short of keeping pace with the intricate demands of hardware development in deep tech industries. At Integrate, we are crafting tailored software solutions that enhance clarity, efficiency, and communication among all stakeholders, thereby enabling teams to accelerate their innovation processes. About the RoleWe are in search of a Full Stack Engineer to join our team and contribute to the development and enhancement of Integrate’s product layer. This role encompasses the entire tech stack—from creating user interfaces using React to developing Go APIs and managing the integrations that connect them—positioning you at the heart of our product-user interface.Your initial focus will include developing features for our cross-domain solution workflows, optimizing the presentation of complex project data for users, and aiding in the development of our API and integration services. You will collaborate closely with product managers, designers, and backend engineers to deliver impactful solutions, prioritizing the quality and craftsmanship of your work.As a member of a small team, you will take full ownership of your projects. If you build it, you are responsible for its success.What You'll Work OnCreate and enhance React-based UI components that simplify complex workflow management for users.Design and maintain RESTful APIs and GraphQL interfaces in Go, catering to both internal and external users.Develop and refine data models in PostgreSQL, focusing on schema design, query optimization, and migration strategies.Contribute to our GraphQL integration layer, ensuring that resolvers are efficiently structured and performant.Build and sustain integration services in Go that seamlessly connect internal systems with external APIs, managing everything from interface design to error handling and observability.Implement and manage CI/CD pipelines using GitHub Actions, covering build, test, and deployment processes across various environments.Deliver clean, well-tested, and maintainable code throughout the tech stack, always striving to improve the existing codebase.Tech StackWe utilize React, Golang, GraphQL, REST, PostgreSQL, and GitHub Actions, with Tailwind CSS also being part of our development environment.

Join Sonsoft Inc. as a .NET Full Stack Developer and be a key player in delivering cutting-edge software solutions. We are seeking a talented professional who thrives in a dynamic environment. You will be responsible for designing, developing, and maintaining high-quality applications across the full stack.Your main tasks will include collaborating with cross-functional teams to define, design, and ship new features, as well as troubleshooting and resolving issues in existing applications. If you have a passion for technology and a desire to make a significant impact, we want to hear from you!

Join our dynamic team at Sonsoft Inc. as a .NET Full Stack Developer. In this role, you will be responsible for designing, developing, and maintaining web applications using the latest technologies in the .NET framework. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet the needs of our clients.

Security Clearance Requirement Active DOD/DSS SECRET security clearance or higher is required for this role. Interim clearance is acceptable. Location Requirement This position is onsite in downtown Washington, DC. Candidates must live in DC, Maryland, or Virginia. Remote work is not available. Role Overview Akumen Inc. seeks a Senior Full Stack Java Developer to join the software development team. This role covers all phases of the software development lifecycle, with emphasis on architecture, design, quality, and implementation. A major focus is upgrading, managing, and maintaining cloud-based applications. Success in this position requires strong experience with Java, Angular, C#, and related technologies. The ideal candidate is analytical, self-motivated, and communicates well while handling both front-end and back-end projects. Key Responsibilities Design, configure, and implement application environments. Develop release management procedures and provide production support. Write and refine software code, conduct unit testing, and perform peer reviews to maintain coding standards and quality. Work with team members on software design, deliver accurate work estimates, and implement new features, including user interfaces and data transformation components. Lead upgrades for complex Angular (v9), C#, and Java (v11) applications to current stable releases, focusing on compatibility, performance, and security. Coordinate with development, infrastructure, and operations teams. Ensure all development activities comply with security policies and practices. Independently address security vulnerabilities found in code scans. Collaborate with Business Analysts, Product Managers, and stakeholders to understand and implement business requirements. Communicate updates to program, project, and team leads about risks or needed adjustments to project plans. Keep current with emerging technologies and best practices. Debug and develop across Java, Spring Boot, Angular, and .NET technologies.