Backend development Jobs in California

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Application Developer

Valiant Solutions LLC

Remote

Full-time

Valiant Solutions is seeking an Application Developer to support our agile software development practice supporting an environmentally focused Federal Government client. The agency's programs aim to promote environmental sustainability and protect the natural resources of our planet. As part of this contract, we will be supporting the agency's efforts to develop and maintain information systems that facilitate the tracking and reporting of environmental data. Our team will work closely with the

Oracle CPQ Developer

Amtex Enterprises

California, USA

Contract, Third Party

Job Title: Oracle CPQ/ BigMachines Developer Location: 5 days onsite at Kearny Mesa location (4200 Ruffin Road), San Diego, CA Duration: 3-4 Month Contract (with potential to extend or convert) Job Description: ABOUT THE ROLE: Highly skilled Oracle CPQ Developer and Solution Architect with over 7 years of hands-on experience in enterprise-grade software development, specializing in Oracle CPQ (BigMachines) and Java back-end integration. Demonstrated success in designing, configuring, and d

Software Dev Engineer 1 (Java/Kotlin)- Remote

ConsultNet, LLC

Remote or Riverton, Utah, USA

Full-time

Software Dev Engineer 1 (Java/Kotlin) 12-month contract Remote (MST) Pay Range: $40.00 - $45.00per hr. We need a Software Dev Engineer 1 for our Content Publishing Platform teams, which are agile software development teams that build essential tools for content publishing and delivery. These tools consist of content entry, business logic transformations, search, and end channel delivery. The tools require a deep understanding of language translation, global content distribution, data manipula

Sr Java Back End Developer

Enexus Global

Sunnyvale, California, USA

Contract

Position: Senior Java Backend Developer Location: Sunnyvale, CA Qualifications 10+ Years of Solid experience in large scale distributed systems and event-driven architectures Design and develop microservices for large scale software applications. Solid experience in NoSql technologies like Cassandra, MongoDB Build n-tier applications using RESTful Services, Java/J2EE, and related technologies. Full Stack Software engineer to work in the Accessibility team to build and maintain tools. Solid

10yrs -Java Backend Developer-Location:Sunnyvale, CA

NMK Global Inc.

Fremont, California, USA

Contract

Job title: Java Backend Developer-Location: Sunnyvale, CA Pref: Ex Walmart Job Description: Walmart is hiring a talented and experienced Java Developer to join their technology team in Sunnyvale, CA. The developer will work on cutting-edge backend systems powering Walmart's large-scale digital platforms. The ideal candidate will have strong technical skills and a proven track record of working in enterprise-grade environments.Key Responsibilities:Design, develop, and maintain Java-based applicat

Backend Engineer (GoLang Developer)

SES

Remote

Full-time

Systems Engineering Services is seeking a Backend engineer with a focus on Golang Development based out of the DMV area. Top 5 Technical Skills: Experience using the following Tech Stacks: Golang; Python; and NodeJS Understanding of cryptography, consensus algorithms, and other core concepts of blockchain technology Familiarity with Private Blockchain as well as Public platforms such as Ethereum, Hyperledger, and/or Corda Top 3 Soft Skills: Outstanding Communications Collaboration Proven ability

Backend Java Developer

Cognowiz

San Jose, California, USA

Contract

Title: Backend Java DeveloperDuration: 4-month contract + extensionsLocation: San Jose, CA Job Description:The client is looking for a Backend Java Developer to join one of the world's leading online payment platform companies based in San Jose, CA. Must-Haves:EE/CS or related majors. Bachelor and above.5+ years working in software engineer. Solid knowledge in Java and experience in design and implementation of REST-APIs, Spring Boot.Experience in micro-service and high concurrency service desig

Senior Backend Engineer

SUNRAY INFORMATICS

Remote

Contract, Third Party

Role : Senior Backend Engineer Location: Pittsburgh, PA Duration: 12+ Months MOI : Telephonic & Skype Primary Skills: NODE.JS, Google Cloud Platform, TYPESCRIPT, FINANCE Need Candidates with a Minimum of 12 Years of Experience. This is a 100% Remote role. Candidates must have experience with Node.js, OAuth2, Google Cloud Platform, and TypeScript in recent projects. Note: Client Manager is considering a Backend NodeJS Developer with .NET Projects Only. Candidates' roles need to be as a Backend

Python Backend Engineer

Calsoft Labs

Remote

Contract

Job Title: Python Backend Engineer Location: 100% Remote Job Description: We are building a next-generation virtual assistant platform that enables natural and responsive voice and chat-based interactions. The platform integrates with internal and external systems to deliver seamless, real-time user experiences at scale.As part of our growing team, we re looking for a skilled Python Backend Engineer to help us build reliable, high-performance backend systems. Role Overview: This role involves d

Software Engineer II (Backend), Discovery Experience

Uber Corporate

San Francisco, California, USA

Full-time

About the Role Uber Eats has evolved beyond just restaurants to serve use cases like grocery, retail, and many more, around the world. The Discovery Experiences team is responsible for helping our users find and discover our various offerings, merchants and items on Uber Eats. We own several core consumer experiences including Feed. We are recruiting for a product-focused engineer who will be responsible for helping develop new consumer experiences on one or more of these surfaces to help eate

Back End Architect

Photon

Remote

Contract, Third Party

We are seeking a seasoned Java Spring Boot Microservices Architect with a strong background in designing and building scalable, distributed systems. The ideal candidate will have hands-on experience architecting microservices-based applications in Java using Spring Boot and will have deployed them in Google Cloud Platform (Google Cloud Platform architecture experience is must-have ( at least 2 years) but Certifications are preferred). This role requires strong technical leadership, system design

Software Engineer, Backend

West Coast Consulting LLC

Remote

Contract

Job Description Software Engineer, Backend Remote What You'll Do: Must Have GoGraphQLMicroservices ArchitecturePythonREST API Development Nice To Have gRPC Remote Procedure CallsthrifWork cross-functionally with product, design, and other engineering counterparts to execute on product and business strategy and build novel products and features that our users will love.Contribute to the full development cycle: technical design, development, test, experimentation, analysis, and launch. You'll b

Java Backend Architect

Photon

Remote

Third Party, Contract

Job Title: Java Backend Architect Location: Dallas, TX / Springfield, MO / Remote Duration: Longterm We are seeking a seasonedJava Spring Boot Microservices Architectwith a strong background in designing and building scalable, distributed systems. The ideal candidate will have hands-on experience architecting microservices-based applications in Java using Spring Boot and will have deployed them inGoogle Cloud Platform(Google Cloud Platform architecture experience is must-have ( at least 2 years

Golang -Backend Engineer

SES

Remote

Contract

Top 5 Technical Skills: Experience using the following Tech Stacks: Golang; Python; and NodeJS Understanding of cryptography, consensus algorithms, and other core concepts of blockchain technology Familiarity with Private Blockchain as well as Public platforms such as Ethereum, Hyperledger, and/or Corda Top 3 Soft Skills: Outstanding Communications Collaboration Proven ability to work with Vendors and External Partners Job Description: The Backend Engineer is responsible for the development and

Software Engineer, Backend

West Coast Consulting LLC

Remote

Contract

Job Description Title: Software Engineer, Backend Duration: Aug 5, 2025 - Jul 31, 2026 Location: Remote (North America) TECHNICAL SKILLS Must Have3+ years of software development experience in one or more general purpose programming languages (Java, Scala, Go, C++, Python).Nice To Have Experience with prompt engineering, machine learning or data science. Cost Center Code49 - Tech-Ads Engineering JOB DESCRIPTION The Ad Safety & Verification (ASV) team is small, scrappy, and able to execute o

Senior Java Backend Engineer fully remote NODE.JS

Paradigm Infotech

Remote

Contract

Must be located within USA No agency or C2C will NOT be considered and Visa sponsorship is not available nor provided W2 role . Cross-functional Collaboration Partner with frontend, mobile, Salesforce, and DevOps engineers to deliver cohesive, end-to-end solutions. Troubleshoot and resolve complex performance and system issues in distributed cloud environments . Represent the backend team in agile ceremonies and strategic planning discussions. Platform & Process Enhancement Drive improvements

JAVA Backend Developer

Caspex Corporation

Sunnyvale, California, USA

Full-time

Position : JAVA Backend Developer Location : Sunnyvale, CA JOB DESCRIPTION: Qualifications 12+ Years of Solid experience in large scale distributed systems and event-driven architecturesStrong Java/J2EE, SpringBoot.Reactive Programming with JAVA is a plus.Handson Experience with L1/L2 Caching.KAFKA, Reactive Java.Cassandra, SQL, NOSQL Database experience.Knowledge of technologies used in building scalable, distributed systems in virtualized cloud environments.Solid DevOps skills in troubleshooti

Java Backend Architect with Google Cloud Platform

Photon

Remote

Third Party, Contract

We are seeking a seasoned Java Spring Boot Microservices Architect with a strong background in designing and building scalable, distributed systems. The ideal candidate will have hands-on experience architecting microservices-based applications in Java using Spring Boot and will have deployed them in Google Cloud Platform (Google Cloud Platform architecture experience is must-have ( at least 2 years) but Certifications are preferred). This role requires strong technical leadership, system design

Senior Software Engineer I, Backend

Catapult Solutions Group

Remote

Full-time

Senior Software Engineer Real-Time Streaming Analytics Engineering Department Remote (U.S. Based Flexible Work Policy) This is a fully remote role with flexible work hours. No on-site requirements. Full-Time PositionAbout Our Client Our client is a leading innovator in the creator commerce space, offering tools and platforms that connect digital influencers with global brands and retailers. With over a decade of industry experience, they operate globally and serve a massive user base of creato

Backend Architect (NodeJS)

Photon

Remote

Contract, Third Party

We are seeking a highly skilled and experienced Tech lead with expertise in Node.js, API to join our agile development team. The ideal candidate will be responsible for building scalable web applications, RESTful APIs, and contributing to cloud-native architecture. Key Responsibilities: Develop and maintain scalable backend services using Node.js (Express/NestJS). Build responsive, high-performance frontends with React.js, Redux, and modern JavaScript (ES6+). Design and implement RESTful APIs an