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Senior Fullstack Engineer I Jobs

145 Job Offers

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Senior Fullstack Engineer
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Singapore , Singapore
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ResMed
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Senior Software Engineer (Fullstack)
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Portugal
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OutSystems
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Senior Fullstack Engineer
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Portugal
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OutSystems
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Senior Software Engineer - Fullstack
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Seeking a Senior Fullstack Engineer for a remote role in India. Develop and deploy secure, reliable applications using modern frontend (React, JavaScript) and backend (Java, Python, Node) technologies. Join a collaborative, remote-first team with comprehensive medical insurance and unlimited time...
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India , Remote
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BrowserStack
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Senior Software Engineer : Fullstack
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India
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BrowserStack
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Senior Fullstack Engineer - Freelance
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France , Paris
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Bsport
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Senior Software Engineer, Fullstack
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Join Serval as a Senior Fullstack Engineer in San Francisco. Build our platform from the ground up, shaping foundational architecture and key technologies. We seek a product-minded engineer with 4+ years of experience and a passion for exceptional UX. Enjoy equity, comprehensive health coverage, ...
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United States , San Francisco
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200000.00 - 300000.00 USD / Year
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Serval
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Senior Fullstack Engineer
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Join Whatnot as a Senior Fullstack Engineer to shape the future of commerce globally. You'll enhance the international user experience, working across the full stack with Python, React, and GraphQL. This remote role offers a comprehensive benefits package and the chance to grow our footprint in k...
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United States , New York
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190000.00 - 230000.00 USD / Year
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Whatnot
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Senior Fullstack Engineer, Data Browsing
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Join Sentry's Data Browsing Team in Toronto as a Senior Fullstack Engineer. You will build and scale core products like Logs, Dashboards, and Profiling using Python, Django, React, and TypeScript. This role requires 8+ years of experience, feature ownership, and mentoring. We offer equity, health...
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Canada , Toronto
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232000.00 - 295000.00 CAD / Year
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Sentry
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Senior Fullstack Engineer, Dialer
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Join our Core Dialer team as a Senior Fullstack Engineer in San Francisco. You will build and enhance the core dialer experience using React, Node.js, and TypeScript. We seek a proactive engineer with 3-5 years of SaaS experience who enjoys rapid iteration. This hybrid role offers equity, compreh...
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United States , San Francisco
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215000.00 - 280000.00 USD / Year
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Nooks
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Senior Software Engineer, Fullstack
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Join our San Francisco team as a Senior Fullstack Engineer. You'll build and scale AI-driven sales products using React, TypeScript, Node.js, and Python. This hybrid role offers equity, comprehensive benefits, and a chance to lead technical vision. Thrive in a fast-paced startup environment.
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United States , San Francisco
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215000.00 - 280000.00 USD / Year
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Nooks
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Senior Fullstack Engineer
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Join Capi as a Senior Fullstack Engineer in London or Paris. Use your expertise in Typescript, React, Node.js, and PostgreSQL to build a fairer financial platform for African businesses. You'll shape the product vision in a high-growth, VC-backed startup with a competitive salary and equity.
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United Kingdom , London
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Capi Money
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Senior FullStack Software Engineer
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Join 3Pillar in Guatemala as a Senior FullStack Engineer. Leverage your 5+ years in .NET Core, Angular, and AWS to architect transformative, high-performance web applications. Drive innovation in diverse industries while enjoying competitive benefits like medical insurance and flexible arrangemen...
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Guatemala
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3Pillar Global
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Senior FullStack Software Engineer
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Join 3Pillar as a Senior FullStack Engineer in Mexico. Lead the design of scalable web applications using your 5+ years of expertise in .NET Core, Angular, and AWS. Collaborate on transformative projects, from healthcare to media, while enjoying competitive benefits like insurance, profit sharing...
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Mexico
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3Pillar Global
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Senior FullStack Software Engineer - .NET/Angular/AWS
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Join 3Pillar in Costa Rica as a Senior FullStack Engineer. Leverage your 5+ years of expertise in .NET Core, Angular, and AWS to architect transformative, high-performance solutions. You will lead projects, collaborate with cross-functional teams, and drive innovation across industries. Enjoy a c...
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Costa Rica
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3Pillar Global
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Senior FullStack Software Engineer - .NET/Angular/AWS
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Join our team in Costa Rica as a Senior FullStack Software Engineer. You will leverage your expertise in .NET, Angular, and AWS to build innovative solutions. This role requires fluent English for technical collaboration. We offer a dynamic environment with opportunities for professional growth.
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Costa Rica
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3Pillar Global
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Senior Software Engineer (Fullstack)
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Join a remote-first team in Argentina building an AI-native Digital Experience Platform. As a Senior Fullstack Engineer, you'll design scalable systems using Node.js, TypeScript, and AWS. We seek a proactive leader with 7+ years' experience to drive key projects in a collaborative, agile environm...
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Argentina
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G2i Inc.
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Senior Fullstack Engineer
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Join Whatnot as a Senior Fullstack Engineer in China, shaping the future of live commerce. You'll design and build engaging, gamified features for our US & EU markets to boost user purchases and engagement. We seek a developer with 4+ years of experience, excellent product instincts, and strong E...
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China
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Whatnot
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Senior Software Engineer - Fullstack
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Join Sigma as a Senior Fullstack Engineer in San Francisco. Build high-performance data platforms using Rust, Go, and TypeScript. Enjoy equity, generous health benefits, and a dog-friendly office while solving complex distributed systems challenges.
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United States , San Francisco
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150000.00 - 220000.00 USD / Year
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Sigma Computing
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Senior Software Engineer - Fullstack
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United States , New York City
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180000.00 - 220000.00 USD / Year
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Sigma Computing
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About the Senior Fullstack Engineer I role

Explore Senior Fullstack Engineer I jobs and discover a pivotal career at the intersection of frontend and backend development. A Senior Fullstack Engineer I is an experienced professional responsible for designing, building, and maintaining complete web applications and software systems. This role demands a holistic understanding of the entire software development lifecycle, from conceptualizing user interfaces to architecting robust server-side logic and databases. Professionals in these jobs are technical leaders who bridge the gap between client-side and server-side technologies, ensuring seamless, performant, and scalable digital products.

Typical responsibilities for someone in this senior capacity extend beyond pure coding. They often include architecting system solutions, making pivotal technology stack decisions, and writing clean, efficient code for both frontend and backend components. A key duty is developing and maintaining RESTful or GraphQL APIs that serve as the communication layer between different parts of an application. Furthermore, Senior Fullstack Engineer I jobs commonly involve optimizing applications for maximum speed, scalability, and security. These engineers are also expected to mentor junior developers, advocate for engineering best practices like code reviews and testing, and collaborate closely with product managers, designers, and other stakeholders to translate business requirements into technical specifications.

The skill set for these roles is comprehensive. On the frontend, proficiency in modern JavaScript frameworks like React, Angular, or Vue.js is standard, coupled with deep knowledge of HTML, CSS, and state management. On the backend, expertise in one or more server-side languages such as Python (with Django/Flask), Java, C#, Node.js, or PHP (Laravel/Symfony) is essential. They must be adept at working with various database technologies, including SQL (e.g., PostgreSQL, MySQL) and often NoSQL (e.g., MongoDB). Experience with cloud platforms (AWS, Azure, GCP), containerization (Docker), and infrastructure-as-code tools is increasingly common. Crucially, a Senior Fullstack Engineer I possesses strong problem-solving abilities, a product-focused mindset, and excellent communication skills to explain complex technical concepts to non-technical teams.

Common requirements for candidates seeking Senior Fullstack Engineer I jobs typically include 5+ years of hands-on software development experience with a proven track record in fullstack roles. A bachelor’s degree in computer science or a related field is often preferred but not always mandatory with equivalent experience. Employers look for individuals who are self-starters, capable of leading projects independently while thriving in a collaborative team environment. A passion for continuous learning and adapting to new technologies is paramount in this ever-evolving field. If you are a versatile engineer who enjoys owning products from end to end and driving technical excellence, exploring Senior Fullstack Engineer I jobs could be the next step in your career.

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