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Senior Software Engineer - Fullstack Jobs

39 Job Offers

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Senior Software Engineer, Fullstack (App Experience)
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Join Affirm as a Senior Fullstack Engineer shaping mobile and web app experiences. Requires 4+ years, React/React Native, and API skills. Enjoy full medical coverage, flexible PTO, and ESPP in Canada.
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153000.00 - 213000.00 CAD / Year
Affirm
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Senior Software Engineer, Fullstack
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Senior Fullstack Engineer role in NYC to architect and scale AI/ML infrastructure and workflow orchestration for healthcare. Requires 5+ years building distributed systems, cloud architecture expertise, and end-to-end ownership in a 0-to-1 in-office environment.
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Assured
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Senior Software Engineer, Fullstack (App Experience)
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Senior Fullstack Engineer role driving consumer app experiences across mobile and web at Affirm. Requires 4+ years with React, React Native, and API development in Kotlin or Python. US-based with equity, health benefits, and flexible time off.
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173000.00 - 255000.00 USD / Year
Affirm
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Senior Software Engineer, Fullstack, Rewards & Incentives
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Senior Fullstack Engineer role at RAIN building rewards and incentives features with JavaScript, TypeScript, React Native, NestJS and Node.js. Own full-stack product work from design to launch in San Francisco with strong benefits.
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Hinge Health
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Senior Software Engineer - Fullstack
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Join Heidi as a Senior Fullstack Engineer in Melbourne, building collaboration features and scalable authorization systems with Python, TypeScript and React. Help double the world's capacity for care.
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Heidi
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Senior Fullstack Software Engineer
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Senior Fullstack Engineer role in Tampa building AI-driven data tools for defense acquisition. Requires 5+ years fullstack experience with TypeScript, Next.js, Express, Postgres. Offers flexible schedule, remote work, and sizeable equity.
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Obviant
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Senior Software Engineer, Fullstack
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Join Echodyne in Kirkland as a Senior Fullstack Engineer to build resilient radar software. Requires 7+ years in production systems, React, async Rust/Tokio, and Python or C++. Enjoy RSUs and fully-paid medical, dental, and vision.
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Echodynecorp
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Senior Software Engineer - Fullstack
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Join UJET in Porto as a Senior Fullstack Engineer to build AI-powered contact center solutions. Requires 5+ years of fullstack experience with Java, Go, Ruby or Python and React or Angular, plus microservices and datastore expertise.
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UJET
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Senior Software Engineer II, Fullstack (AI)
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Senior Fullstack Engineer role at LG Ad Solutions in Denver, building scalable CTV advertising reporting platforms with React, Node.js, and AI tools. Requires 5+ years fullstack experience. Salary $162K-$264K plus bonus and full benefits.
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LG Ad Solutions
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Senior Software Engineer - FullStack
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Senior FullStack Engineer role in Pune requiring 6+ years with Python, Django, PostgreSQL and multi-tenant SaaS expertise. Join Xplor Mariana Tek to build scalable fitness studio software with Ember, Docker and modern testing practices in a remote-first team.
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Xplor
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Senior Software Engineer - FullStack
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Senior FullStack Engineer role in Pune requiring 6+ years experience with Python, Django, PostgreSQL and multi-tenant SaaS. Join Xplor Mariana Tek to build smart fitness studio management software in a remote, collaborative team.
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Xplor
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Senior Software Engineer - Fullstack
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133000.00 - 161000.00 USD / Year
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CesiumAstro
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Senior Software Engineer - Fullstack (Productivity Engineering)
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LinkedIn
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Senior Fullstack Software Engineer - Online Jobs
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LinkedIn
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Senior Fullstack Software Engineer (Kotlin/Java/React) - Fintech
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Delivery Hero
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Senior Software Engineer I- Fullstack
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Aledade PBC
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Senior Software Engineer (Java FullStack + Agentic Ai)
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Altisource
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Senior Software Engineer - Fullstack
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LinkedIn
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Senior Software Engineer - Fullstack
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LinkedIn
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Senior .NET Software Engineer (Fullstack) / 1
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Inetum
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About the Senior Software Engineer - Fullstack role

Explore a world of opportunity with Senior Software Engineer (Fullstack) jobs, a pivotal role at the intersection of user experience and system logic. A Senior Fullstack Software Engineer is a versatile and experienced professional responsible for designing, building, and maintaining the complete technology stack of modern web applications. This encompasses both the frontend, or client-side, that users interact with directly, and the backend, or server-side, which handles data processing, business logic, and database interactions. Professionals in these roles are end-to-end problem solvers, capable of translating complex business requirements into robust, scalable, and secure digital products.

Typical responsibilities for a Senior Fullstack Engineer are comprehensive. They involve analyzing technical requirements and architecting appropriate solutions, often in collaboration with product managers, UX designers, and other stakeholders. A key duty is the hands-on development of features, writing clean, efficient code for both the user interface and the supporting APIs and services. They establish and advocate for engineering best practices, including code reviews, test-driven development (TDD), and comprehensive documentation. Beyond initial build, these engineers are instrumental in setting up and maintaining continuous integration and deployment (CI/CD) pipelines, ensuring smooth and reliable software delivery. They also own the ongoing health of applications, providing bug fixes, performance optimizations, and support after launch.

The skill set required for these senior-level jobs is broad and deep. On the technical front, proficiency in at least one backend language (such as Java, Python, Node.js, or C#) and its associated frameworks is standard, paired with expertise in frontend JavaScript libraries like React, Angular, or Vue.js. A strong understanding of database design, both relational (SQL) and non-relational (NoSQL), is essential. In today's cloud-centric world, experience with cloud-native development, containerization (e.g., Docker, Kubernetes), and DevOps principles is highly typical. Equally important are the soft skills: excellent communication for collaborating across disciplines, a product-minded approach to development, leadership in mentoring junior engineers, and a commitment to continuous learning in a rapidly evolving field.

Ultimately, Senior Fullstack Software Engineer jobs are for those who thrive on ownership and impact. These professionals bridge the gap between idea and execution, ensuring that every layer of the technology stack works in harmony to deliver exceptional value to the end-user. They are the technical anchors of product teams, driving quality, innovation, and operational excellence. If you are an engineer who enjoys both the artistry of interface design and the engineering rigor of scalable systems, exploring Senior Fullstack Software Engineer jobs could be the next step in a rewarding career shaping the digital landscape.