Full Stack UI Developer

Senior Full Stack Developer / ArchitectLocation – Seattle, WADuration – 12 monthsJob Description:We are seeking a talented Senior Full Stack Developer/Architect to join our dynamic team. The ideal candidate will possess strong proficiency in C# and have extensive experience in developing applications from the ground up. Expertise in RESTful web services is essential, along with a deep understanding of Azure for deploying large-scale services that operate in production environments. Key Responsibilities:• Collaborate with business partners to provide insights and recommendations for technology solutions, encompassing package selection and system design modifications. • Partner with development and project teams to troubleshoot and devise technical solutions for complex challenges. • Establish and uphold standards and procedures for design, development, testing, and documentation, ensuring the delivery of quality systems that meet business requirements. • Define scope, objectives, and technical direction for new or updated web applications, leading systems analysis, design, development, and implementation efforts. • Offer technical mentorship and guidance to junior staff. • Ensure that application design aligns with the overarching vision and future state of existing systems.Required Qualifications:• Minimum of 7 years of hands-on experience with the Microsoft .NET framework and C#. • At least 1 year of experience with Web API and Entity Framework is preferred. • Familiarity with AWS is a plus (1+ year). • Experience in building disconnected applications using MSMQ is desirable (1+ year). • Proficiency in Windows PowerShell scripting is preferred (1+ year). • Comprehensive understanding of application architecture and development within .NET/Service Oriented models, .NET framework, CLR, and VS.NET (7+ years). • Solid experience with Microsoft SQL Server, SSIS, and the implementation of complex SQL stored procedures (7+ years). • Extensive knowledge of design patterns and object-oriented design principles (7+ years). • Familiarity with Git and Team Foundation Server (1+ year). • Technical experience across operating systems, tools, software integration, systems design, application design, and development methodologies. • Proven ability to analyze business requirements and identify IT solutions for process improvements (8 years). • Experience in mentoring developers and leading projects to successful completion (4 years). • Familiarity with working in a Scrum or agile development environment (1+ years). • Highly preferred: AZURE ServiceBus, DocumentDB, nServiceBus, MSMQ.

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.

Essential Skills Required:Proficient in C# - proficient in developing applications from the ground up with extensive experience in software development.Expertise in RESTful Web Services - comprehensive understanding and hands-on experience in developing RESTful APIs.Azure Development - experience in deploying large-scale services on Azure and utilizing them in production applications.Key Responsibilities:• Collaborate with business stakeholders to recommend technology solutions, including software package selection and system design modifications.• Consult with project teams to provide innovative technical solutions for complex challenges.• Establish and uphold design, development, testing, and documentation standards to ensure high-quality, reliable systems that meet business needs.• Define the scope, objectives, and technical direction for new or modified web applications, leading systems analysis, design, development, and implementation efforts.• Offer technical guidance and mentorship to development staff.• Ensure that application designs align with the broader vision and future state of existing systems.

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.

Role overview Pearl Health is hiring a Senior Full Stack Software Engineer. This role focuses on building and improving web applications that support healthcare technology. The position can be based in Seattle, New York City, Boston, or fully remote. What you will do Develop web applications that are reliable and can scale as usage grows Work with teams across product, design, and engineering to create new features and solutions Contribute to both front-end and back-end codebases, helping projects move from early ideas to launch Find ways to improve user experience within Pearl Health's products Who succeeds in this role Experienced engineers comfortable working across the stack Those who enjoy collaborating with a variety of disciplines People who care about building technology that supports better healthcare outcomes

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

Axon is seeking a Senior Full Stack Engineer to join the team in Seattle, WA. This position involves building and maintaining applications that advance law enforcement and public safety. The work spans both front-end and back-end development, with an emphasis on practical solutions and thoughtful design. Key responsibilities Develop and maintain scalable applications across the technology stack Collaborate with engineers, designers, and cross-functional teams to deliver reliable features Contribute to the design, implementation, and ongoing support of complex systems Help advance Axon's mission to protect life and reduce harm using technology Location This role is based in Seattle, Washington.

Join finvari as a Senior or Staff Frontend/Full-Stack Engineer, where your expertise will help us shape innovative solutions that drive our mission forward. We are looking for a passionate engineer who thrives in a dynamic environment and is eager to contribute to cutting-edge projects.

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.

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.

Staff Full Stack EngineerAbout Pay-iAt Pay-i, we are tackling one of the most significant challenges in enterprise AI: demonstrating the ROI of Generative AI investments. With global spending on Generative AI projected to reach $600 billion by 2028, a staggering 72% of CIOs cite measurement and forecasting as their primary obstacle, and only 13% of business leaders report substantial enterprise-level benefits from Generative AI. Our unique platform converts every model call, prompt, and agent interaction into CFO-grade metrics, enabling enterprises to gain financial clarity, identify successful use cases, optimize costs, and demonstrate impact.Founded by former Microsoft executives with over 20 years of experience each, Pay-i is a seed-stage startup supported by five venture capital firms and C-suite angels from industry giants like Microsoft, Twilio, and Zoom. If you are eager to contribute to products that fundamentally transform how enterprises scale their AI initiatives, we invite you to help us launch the definitive system of record for Generative AI ROI.The OpportunityAs a Staff Full Stack Engineer at Pay-i, you will be a vital member of our team, collaborating closely with fellow Full Stack Engineers to craft our customer’s front-end experience. This role offers an exceptional opportunity to innovate and experiment alongside a seasoned team of GenAI leaders who value customer feedback.What You'll DoAre you passionate about developing groundbreaking products that address critical financial challenges in leveraging Generative AI? As our Staff Full Stack Engineer, your contributions will be instrumental in our mission. You will shape the user experience across our dashboards, websites, and products, while establishing a strong foundation for our future growth.Core Responsibilities:Collaborate with Pay-i's front-end and back-end engineers to swiftly deliver both prototype and production-quality productsDesign high-quality, enjoyable user experiences by creating interfaces that are intuitive, performant, and reliableMaintain high graphic standards and ensure brand consistency across all customer interactionsApply responsive design principles to guarantee seamless display on various devices and screen sizesRefactor existing code to enhance performance, structure, and readabilityUtilize state management libraries and patterns (e.g., Redux, Context API) to efficiently manage application state

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.

Employee Applicant Privacy NoticeAbout Us:At SoFi, we are dedicated to shaping a brighter financial future. Our mission is to revolutionize the way individuals engage with personal finance. As a next-generation financial services company and national bank, we leverage innovative, mobile-first technology to empower millions of members in achieving their financial goals. The industry is undergoing a significant transformation, and we are proud to be at the forefront of this change. Join us in investing in your career and the financial landscape.The Opportunity:We are on the lookout for a Senior Full-Stack Software Engineer to join our dynamic team. SoFi is expanding its crypto product offerings, creating a new team focused on delivering exceptional crypto services for our members. With recent advancements paving the way for our return to the crypto space, we aim to develop secure, intuitive, and comprehensive solutions in crypto Investing, Transfers, Payments, Custody, and beyond.As a key member of our team, you will be involved in all aspects of development, including functional implementation, system architecture, bug resolution, and code health maintenance, while continuously evolving as an engineer. The ideal candidate is hands-on, possesses a strong sense of ownership, and is passionate about delivering quality. We excel in collaboration between Product, Design, and Engineering, allowing you to engage in the entire product lifecycle from ideation to deployment and ongoing enhancement.At SoFi, you will be part of a revolutionary finance company dedicated to helping our members achieve financial independence. Our commitment to being at the center of our members’ financial lives drives us to innovate continually and expand our product range across loans, wealth management, and insurance. With our impressive growth trajectory, we are eager to attract exceptional talent, starting with you.

At Anduril Industries, we are redefining the landscape of defense technology. Our mission is to revolutionize the capabilities of the U.S. and allied military forces through innovative technology. By integrating the expertise and cutting-edge solutions from some of the most progressive companies of the 21st century into the defense sector, we are transforming the design, construction, and marketing of military systems. Our advanced systems are powered by Lattice OS, an AI-driven operating system that seamlessly integrates multiple data streams into a real-time, 3D command and control center. As we navigate an era of strategic competition, Anduril is dedicated to delivering state-of-the-art autonomy, AI, computer vision, sensor fusion, and networking technology to military operations in a matter of months, not years.ABOUT THE ROLEWe are looking for a talented Full Stack Security Software Engineer to develop innovative security tools aimed at safeguarding our diverse range of products, including the detection of potential cybersecurity threats within embedded Linux systems and Android devices. The successful candidate will possess extensive skills in full-stack development, ranging from Linux eBPF programs to cloud backends and everything in between.KEY RESPONSIBILITIESDesign and develop cybersecurity tools specifically for embedded Linux and Android platforms.Build and maintain robust backend services utilizing REST APIs on cloud infrastructure.Create intuitive front-end applications using React and TypeScript.Manage cloud infrastructure efficiently with Terraform and/or AWS CDK.Collaborate with cross-functional teams to identify security requirements and implement effective solutions.Conduct code reviews to ensure compliance with security best practices.Stay abreast of emerging security threats and technologies.

Join Opendoor as a Full Stack Software Engineer, where you'll have the opportunity to work on innovative solutions that redefine the real estate experience. You will be responsible for designing, developing, and maintaining complex applications that help streamline the buying and selling process. Collaborate with a diverse team of engineers, product managers, and designers to deliver high-quality software that meets our users' needs.

We are seeking a talented and motivated Full Stack .NET Developer to join our dynamic team in Seattle. This is an urgent opportunity for EAD Green Card holders and U.S. Citizens only. If you are passionate about developing innovative solutions and thrive in a fast-paced environment, we want to hear from you!

Position: Senior .NET Developer and ArchitectLocation: Seattle, WAContract Duration: 12 MonthsNote: This position is open only to US Citizens and Green Card holders (locals only).Job Overview:We are seeking an accomplished Senior .NET Developer and Architect with over 8 years of extensive experience in application development and programming. The ideal candidate will possess a strong background in designing, developing, and supporting REST APIs at scale.Key Responsibilities:• Design and develop robust REST APIs• Utilize advanced knowledge of C# and .NET Framework, with emphasis on application architecture• Apply deep understanding of design patterns and object-oriented design principles• Engage with distributed systems and architectures, including SOA, SaaS, and microservices• Manage both relational and non-relational databases, including NoSQL solutions• Leverage experience with Tier 1 cloud platforms, preferably Azure or AWS• Preferred experience with Azure ServiceBus, DocumentDB, nServiceBus, and MSMQ• Demonstrate capability in building disconnected applications using MSMQ (1+ year preferred)Qualifications:• Proven track record of collaborating successfully with other engineers in a full-stack Agile delivery team• Exceptional communication skills, both verbal and written• Strong analytical and problem-solving abilities.

Join Adora, a dynamic and rapidly expanding SaaS company based in Seattle and NYC, as we revolutionize a trillion-dollar industry. Our innovative platform empowers enterprise B2C brands to reclaim control from platform algorithms. Leveraging AI, our performance marketing solution offers Speed at Scale, enabling creative teams to stay ahead of the evolving demands from Meta and Google while achieving significant improvements in ROAS.We are on the lookout for a Senior Fullstack Engineer who prioritizes user experience over mere features. In this pivotal role, you will design and structure our customer-facing platform, gaining insights into marketers' workflows, and laying the technical groundwork that simplifies their tasks. This hands-on position involves daily coding and significantly influences the evolution of our entire system.Technology Stack: Python, MySQL, AWS, Big Query, React, TypeScript

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.