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Full Stack Engineer - Backend United States, Sunnyvale Jobs

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Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Work directly with founders to build next-gen developer tools from zero to one. Leverage 10+ years of expertise in modern stacks (React, Node, AWS) to architect scalable, cloud-native applications. Receive equity and shape the ...
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United States , Sunnyvale
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180000.00 - 200000.00 USD / Year
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80Twenty
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Until further notice
Senior Software Engineer, Full Stack
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Join Cairns Health in Sunnyvale as a Senior Full Stack Engineer. Develop cutting-edge LLM-powered health applications using React, React Native, Python, and Java. Collaborate with a skilled team on AI, hardware integration, and cloud tech (AWS/Kubernetes) for a competitive package including equit...
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United States , Sunnyvale
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170000.00 - 175000.00 USD / Year
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Helpcare AI
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Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Work directly with founders to build next-gen developer tools from zero to one. Requires 10+ years' expertise in modern JavaScript/TypeScript, cloud platforms, and scalable system design. This onsite role in Sunnyvale offers si...
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United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
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80Twenty
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Until further notice
Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Work directly with founders to build next-gen developer tools from zero to one. Requires 10+ years' expertise in modern stacks (React, Node, AWS) and microservices. This onsite role in Sunnyvale offers significant equity in a h...
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United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
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80Twenty
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Until further notice
Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Work directly with founders to build next-gen developer tools from zero to one. Requires 10+ years of expertise in modern JS/TS frameworks, cloud microservices, and scalable architecture. Receive equity and shape the future of ...
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Location
United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
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80Twenty
Expiration Date
Until further notice
Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Work with the founding team to build next-gen developer tools from zero to one. Leverage 10+ years of expertise in modern JavaScript/TypeScript, cloud platforms, and scalable microservices. Receive equity and shape the future a...
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Location
United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
80twenty.com Logo
80Twenty
Expiration Date
Until further notice
Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Shape next-gen developer tools with 10+ years of full-stack expertise in modern frameworks and cloud platforms. Work onsite in Sunnyvale, collaborating closely with founders and earning equity in a high-growth venture.
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Location
United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
80twenty.com Logo
80Twenty
Expiration Date
Until further notice
Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Shape next-gen developer tools with 10+ years of full-stack expertise in modern frameworks and cloud platforms. Work onsite in Sunnyvale, collaborating directly with founders and earning equity in a high-growth venture.
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Location
United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
80twenty.com Logo
80Twenty
Expiration Date
Until further notice
Full Stack Engineer
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Join a pioneering Silicon Valley AI startup as a Full Stack Engineer. Work directly with founders to build next-gen developer tools from zero to one. Leverage 10+ years with modern stacks (React, Node, AWS) in a fast-paced, equity-backed environment. Shape the future of AI in Sunnyvale.
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Location
United States , Sunnyvale
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Salary
180000.00 - 200000.00 USD / Year
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80Twenty
Expiration Date
Until further notice
A Full Stack Engineer specializing in backend jobs is a versatile and highly sought-after software professional who possesses expertise across the entire technology stack, with a pronounced depth in server-side logic, databases, and application architecture. This role is central to building the robust, scalable engines that power modern web applications, APIs, and digital services. While proficient in frontend technologies to ensure cohesive integration, their primary focus and value lie in designing, implementing, and optimizing the complex backend systems that handle data, business logic, security, and performance. Professionals in these roles typically shoulder end-to-end responsibility for feature development and system health. Common responsibilities include designing and developing secure, high-performance APIs and microservices; architecting and interacting with both SQL and NoSQL databases; writing clean, maintainable, and tested server-side code; and ensuring system reliability through monitoring, debugging, and participating in on-call rotations. They are deeply involved in the entire software development lifecycle, from concept and design through testing, deployment, and iteration. A critical aspect of the job is collaborating closely with frontend engineers, product managers, and DevOps specialists to translate business requirements into technical solutions, often making key architectural decisions that impact scalability and long-term maintainability. The typical skill set for these backend-focused full stack jobs is comprehensive. Core technical requirements almost always include advanced proficiency in one or more backend programming languages such as Java, Python, C#, or Node.js, alongside frameworks like Spring Boot or Django. Expertise in RESTful API design, cloud platforms (AWS, GCP, Azure), and containerization technologies like Docker and Kubernetes is standard. A strong grasp of database management, data modeling, and caching strategies is essential. On the frontend, practical knowledge of JavaScript, TypeScript, and a modern framework like React, Angular, or Vue.js is necessary for effective integration. Beyond technical prowess, successful candidates demonstrate strong problem-solving abilities, a commitment to software best practices (including Agile methodologies, CI/CD, and code reviews), and excellent collaboration skills. Many positions also seek experience in mentoring junior engineers and advocating for technical excellence. For those seeking dynamic and impactful backend jobs, the Full Stack Engineer path offers the unique advantage of holistic system understanding. It allows professionals to not only build the foundational logic of applications but also to see how it connects to and enables the user experience, making them invaluable assets in any technology-driven organization. This blend of deep backend expertise with complementary frontend skills opens doors to a wide array of opportunities across industries, from startups to large enterprises.

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