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Backend Full Stack Engineer Jobs in Sunnyvale, CA

Clera

Full Stack Engineer

San Mateo, CA · On-site

$150 - $200/hr

About the Role This is a full-stack engineering role at an early-stage AI infrastructure startup ... Split your time roughly 60% on frontend and API layer work, 40% on backend services. * Define ...

Krew

Full Stack Engineer

San Francisco, CA · On-site

$150K - $250K/yr

We're looking for a (Human) Member of Technical Staff specializing in full-stack engineering. We're ... Design and build backend APIs and services that power our AI agents and operations tooling using ...

Worky

Full Stack Engineer

San Francisco, CA · On-site

$200 - $250/hr

About the Role This is a full-stack engineering role with a backend lean at an early-stage AI infrastructure company building the continuous improvement layer for production AI agents. You'll work ...

Stellar IT Group

Full Stack Engineer

Fremont, CA · On-site

Overview: Mid-Level Full Stack Engineer 6+ months (CTH) Fremont, CA (ONSITE) Core Technical ... Proven experience in C# / .NET back-end development for production systems. * Strong Angular ...

Purple Unicorn

Full-Stack Engineer

San Francisco, CA · On-site

$120K - $150K/yr

Purple Unicorn, on behalf of SalesPatriot , is hiring an Full Stack Engineer . Non-negotiable: ALL ... Backend-leaning fullstack role using Svelte/Typescript/Postgres. * Design, develop, and maintain ...

Purple Unicorn

Full-Stack Engineer

San Francisco, CA · On-site

$120K - $150K/yr

Purple Unicorn, on behalf of SalesPatriot , is hiring an Full Stack Engineer . Non-negotiable: ALL ... Backend-leaning fullstack role using Svelte/Typescript/Postgres. * Design, develop, and maintain ...

Samba

Full Stack Engineer

San Francisco, CA

Extend the Node backend-for-frontend between the UI and core services - building endpoints ... A full-stack engineer with real range. You've owned significant features end to end across the ...

Samba

Full Stack Engineer

San Francisco, CA

$160K - $200K/yr

Extend the Node backend-for-frontend between the UI and core services -- building endpoints ... A full-stack engineer with real range. You've owned significant features end to end across the ...

EvidaraIQ

Senior Full-Stack Engineer

San Francisco, CA · On-site

$125 - $150/hr

Join our engineering team as a Senior Full-Stack Engineer to build the platform that powers ... AI. You'll work on both frontend and backend systems, creating intuitive interfaces for ...

Ariston Tek Inc

Java Full Stack Engineer

Sunnyvale, CA · On-site

$61.50 - $79.50/hr

Java Full Stack Engineer Location: Sunnyvale, CA Duration: 12+ months Required Skills: Front end: CSS (web page layouts) AngularJS JQuery Javascript Backend: Spring Framework Java JPA Frameworks ...

Wheelhouse

Full Stack Engineer

San Francisco, CA · On-site +1

You will be joining a team that includes other front-end engineers, a designer, and backend-leaning full-stack engineers. Your role will be to elevate the quality of our interface, ensuring that our ...

Ariston Tek Inc

Java Full Stack Engineer

Sunnyvale, CA · On-site

$61.50 - $79.50/hr

Java Full Stack Engineer Location: Sunnyvale, CA Duration: 12+ months Required Skills: Front end: • CSS (web page layouts) • AngularJS • JQuery • Javascript Backend: • Spring Framework • ...

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Showing results 21-40

All JobsBackend Full Stack Engineer JobsBackend Full Stack Engineer Jobs in Sunnyvale, CA

Backend Full Stack Engineer information

See Sunnyvale, CA salary details

$52.2K

$158.2K

$223.6K

How much do backend full stack engineer jobs pay per year?

As of Sep 7, 2026, the average yearly pay for backend full stack engineer in Sunnyvale, CA is $158,174.00, according to ZipRecruiter salary data. Most workers in this role earn between $130,300.00 and $185,400.00 per year, depending on experience, location, and employer.

What is a backend full stack engineer?

A Backend Full Stack Engineer is a software developer who specializes in building and maintaining the server-side logic, databases, and APIs of an application, while also having proficiency in front-end technologies. They are capable of working on both the backend and frontend parts of web applications, allowing them to develop end-to-end features and ensure seamless integration between the client and server sides. This role requires strong knowledge of programming languages such as JavaScript (Node.js), Python, or Java, as well as familiarity with databases, server architectures, and various web frameworks. Backend Full Stack Engineers often collaborate with designers, frontend developers, and other stakeholders to deliver complete and functional products.

What are the key skills and qualifications needed to thrive as a backend full stack engineer?

To thrive as a Backend Full Stack Engineer, you need strong proficiency in server-side languages (such as Node.js, Python, or Java), database management, and a solid understanding of front-end technologies, usually supported by a degree in computer science or related experience. Familiarity with frameworks (like Express, Django, or Spring), version control systems (like Git), and cloud platforms (such as AWS or Azure) is typically required. Effective problem-solving, communication, and teamwork skills help you collaborate across disciplines and deliver robust solutions. These skills ensure scalable, maintainable applications and seamless integration between backend and frontend systems, which are critical for organizational success.

How does a backend full stack engineer typically collaborate with frontend developers and other team members?

Backend Full Stack Engineers frequently work alongside frontend developers, product managers, and QA engineers to deliver seamless user experiences. They are responsible for building and maintaining server-side logic and APIs, ensuring data flows efficiently between the backend and frontend. Effective communication is essential, as they must align backend functionality with frontend requirements and participate in code reviews, sprint planning, and troubleshooting sessions. This collaborative environment fosters learning and often provides opportunities to contribute across the tech stack, enhancing both technical and interpersonal skills.

What is the difference between Backend Full Stack Engineer vs Frontend Developer?

AspectBackend Full Stack EngineerFrontend Developer
Primary FocusDeveloping server-side logic, databases, and APIsDesigning and implementing user interface and client-side features
Required SkillsProgramming languages like Python, Java, Node.js; databases; server managementHTML, CSS, JavaScript; frameworks like React or Angular
Work EnvironmentOften involved in both front-end and back-end tasks, collaborating across teamsPrimarily focused on client-side development, UI/UX design

While both roles require strong programming skills, Backend Full Stack Engineers handle both server-side and client-side development, whereas Frontend Developers focus mainly on creating engaging user interfaces. Understanding these differences helps employers and job seekers target the right skills and responsibilities for each role.

What are popular job titles related to Backend Full Stack Engineer jobs in Sunnyvale, CA?

For Backend Full Stack Engineer jobs in Sunnyvale, CA, the most frequently searched job titles are:

What job categories do people searching Backend Full Stack Engineer jobs in Sunnyvale, CA look for?

The top searched job categories for Backend Full Stack Engineer jobs in Sunnyvale, CA are:

What cities near Sunnyvale, CA are hiring for Backend Full Stack Engineer jobs?

Cities near Sunnyvale, CA with the most Backend Full Stack Engineer job openings:

Backend Full Stack Engineer jobs near you
Infographic showing various Backend Full Stack Engineer job openings in Sunnyvale, CA as of August 2026, with employment types broken down into 92% Full Time, 2% Part Time, and 6% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $158,174 per year, or $76 per hour.

Full Stack Engineer

Clera

San Mateo, CA • On-site

$150 - $200/hr

Other

Posted 13 days ago

Job description

About the Role

This is a full-stack engineering role at an early-stage AI infrastructure startup building an enterprise context layer that makes AI agents reliable, accurate, and secure for business-critical operations. You'll join a small, senior team and own product surfaces end-to-end — from the interfaces customers interact with, to the APIs and data models underneath. Your work directly shapes how engineers understand and trust the platform.

What You'll Do

  • Own complete product surfaces end-to-end: interfaces, APIs, and underlying data models.

  • Make complex system behavior legible and fast for engineers using the platform.

  • Split your time roughly 60% on frontend and API layer work, 40% on backend services.

  • Define architecture, ship to production, monitor behavior, and fix what breaks.

  • Make design and product calls independently — no handed-down specs or design files.

  • Remove growth ceilings by building customer-facing surfaces that are obvious and intuitive.

What We’re Looking For

  • 5+ years building full-stack applications with shipped products in production.

  • Genuine full-stack capability — comfortable going deep on distributed systems while also building UI.

  • Proficiency with modern frontend frameworks (React, Vue, or equivalent).

  • Backend service development experience with proficiency in Python, Go, Node.js, Java, or equivalent.

  • Demonstrated ability to make architectural decisions independently and own implementation through production.

  • Experience designing and shipping product surfaces end-to-end without detailed specifications or design files.

  • Experience with databases and data modeling for systems requiring real-time performance.

  • Comfort with ambiguity and a strong bias toward ownership and action.

  • Nice to have: Experience with knowledge graphs, semantic systems, or graph databases; distributed systems, real-time inference, or agent-based systems; infrastructure or developer-facing products; enterprise data systems or data integration.

Location

On-site in San Mateo, CA, US. Full-time. Visa sponsorship is available.

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