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22 senior fullstack developer jobs at 17 companies in Buena Park, CA

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Fullstack Engineer, App Platform
San Francisco or Seattle or New York City or Los Angeles or United Kingdom or Ireland or Poland or Germany or Australia
$207k-$230k/yr HybridFull Time
Whatnot
Whatnot: Social marketplace for buying and selling via live streams
5+ YOERequires 5+ years of software development experience, a bachelor's degree or equivalent experience, React and GraphQL web development, scalable fullstack systems expertise, and strong product, ownership, mentoring, and problem-solving skills.
React, GraphQL, Next.js, Node, Python, Postgres
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3w
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Senior Fullstack Engineer
Los Angeles, California, United States
$170k/yr OnsiteFull Time
FlightStory
FlightStory: A media and investment scaling creator-led brands.
Full-stack experience with TypeScript, React, Node.js, Python, JavaScript, cloud infrastructure, databases, APIs, scalable systems, and production AI/ML or LLM applications.
TypeScript, React, Node.js, Python, JavaScript, Google Cloud, SQL, NoSQL, APIs, AI/ML, LLMs
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2mo
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Sr. Fullstack Platform Engineer - (Backend Focus)
Los Angeles or California or United States
$140k-$180k/yr RemoteFull Time
Salt AI
Salt AI: Provides an AI orchestration platform for life sciences organizations.
Senior backend/platform engineer with deep Python/Django, APIs, cloud infrastructure, Kubernetes, distributed systems, workflow execution, observability, and fullstack familiarity (TypeScript/React). High product judgment and experience using AI engineering tools.
Python, Django, TypeScript, React, Kubernetes, Claude Code, Cursor, Codex, GitHub
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2mo
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Senior Fullstack Engineer - Growth + Onboarding
New York City or San Francisco or Los Angeles
$180k-$210k/yr HybridFull Time
Pivotal Health
Pivotal Health: AI platform automating healthcare insurance claim disputes for providers.
6+ YOE2+ Mgmt6+ years software engineering experience with recent backend work, 2+ years managing engineers, experience with integrations and third-party APIs, customer-facing communication, Python familiarity, and Bachelor's in STEM preferred.
EDI, 835/837, HL7, FHIR, ICD-10, CPT, Epic, Cerner, SFTP, Python
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1w
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Senior Fullstack Software Engineer
Irvine, California, United States
$170k-$200k/yr OnsiteFull Time
TP-Link
TP-Link: Global manufacturer of networking hardware and smart home devices.
7+ YOEBachelor's degree or equivalent experience, 7+ years in software engineering, JavaScript framework expertise, PHP with Go or Java, cloud platforms, web applications, APIs, and technical mentoring experience.
PHP, JavaScript, React, Vue, Angular, Go, Java, Figma, Adobe Photoshop, AWS, Azure, Google Cloud Platform, Google Analytics, Adobe Creative Cloud, Docker, Kubernetes, CI/CD, Large Language Model (LLM), Retrieval-Augmented Generation (RAG)
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1mo
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Fullstack Senior Software Engineer, ArsenalOS
Costa Mesa, California, United States
$166k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
5+ YOE5+ years software engineering experience, deep full‑stack web expertise (backend/frontend/integration), degree in CS/IS/EE or related, experience with high‑availability enterprise applications, U.S. Person required.
Javascript, React, Typescript, NextJS, ERP, MES, WMS, CRM
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3w
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Fullstack Engineer (Javascript, node.js, SQL)
Pasadena, California, United States
$90k-$162k/yr HybridFull Time
Siemens
SiemensXETRA: SIE: Manufactures industrial automation, infrastructure, and energy technology systems.
Bachelor's degree or equivalent experience, hands-on Node.js, JavaScript, PostgreSQL, Kubernetes, web application and API design experience, collaborative teamwork and strong coding practices.
Node.js, PostgreSQL, JavaScript, Kubernetes
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2mo
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Senior Software Engineer, Fullstack
Playa Vista or United States
$160k-$190k/yr HybridFull Time
Thrive Market
Thrive Market: Membership-based online grocery store selling natural and organic products.
5+ YOE5+ years building and operating high-traffic customer-facing systems; strong CS fundamentals, OO and relational DB design; experience with eventing (Kafka, SNS, SQS), workflow (Temporal, Airflow), PHP/Magento, React/Next, AWS, and observability (New Relic, Datadog).
Kafka, SNS, SQS, Temporal, Airflow, DAGs, PHP, Magento, React, Next, AWS Lambda, S3, CloudWatch, New Relic, Datadog
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1mo
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Senior Software Engineer - Supply Core (Fullstack)
Aliso Viejo or San Francisco
$200k-$250k/yr HybridFull Time
StubHub
StubHubNYSE: STUB: Online marketplace for buying and selling live event tickets.
5+ YOE5+ years software development experience, 2+ years with React, experience with Java or C#, expertise across backend/frontend systems, mentoring experience, strong communication and product judgment.
React, Java, C#
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Senior Software Engineer (Fullstack) - Scribd Core
San Francisco or Ottawa or Phoenix or Toronto or Los Angeles or Denver or Salt Lake City or Atlanta or Chicago or Houston or Portland or New York City or Vancouver or San Diego or Washington, D.C. or Sacramento or Jacksonville or Seattle or Mexico City or Austin or Miami or Boston or Dallas
$124k-$226k/yr HybridFull Time
Scribd
Scribd: Subscription-based digital library for e-books, audiobooks, and documents.
6+ YOE6+ years of full-stack development experience with React and Next.js or Ruby on Rails; cloud service maintenance, incident response, and strong performance, accessibility, SEO, collaboration, and code quality skills.
Ruby on Rails, React, Next.js, GraphQL, Node, Python, Go, Microfrontend, SEO, AEO
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3mo
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Senior Software Engineer, Air AI
Mountain View or Los Angeles or San Francisco or New York City
$170k-$230k/yr HybridFull Time
Commure
Commure: AI-powered software platform for healthcare workflow and administrative automation.
4+ YOE4+ years software engineering; strong fullstack Python backend and TypeScript/React frontend; Docker and Kubernetes; experience with LLM APIs; production AI features; able to ship quickly.
Python, TypeScript, React, Docker, Kubernetes
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3w
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Lead Software Engineer - Fullstack
Los Angeles, California, United States
$165k-$185k/yr HybridFull Time
AXS
AXS: Provides digital ticketing and marketing solutions for live events.
7+ YOE7+ years software development experience with front-end and back-end technologies; leadership experience; proficiency in HTML, CSS, JavaScript/TypeScript, React/Next.js, C#/.NET Core; BS in Computer Science.
HTML, CSS, JavaScript, TypeScript, React, Next.js, C#, .NET Core, AWS, Node.js
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2mo
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Principal Engineer - FullStack – Catalog
Irvine, California, United States
$130k-$135k/yr OnsiteFull Time
Tech Mahindra
Tech MahindraNational Stock Exchange of India: TECHM: Global provider of information technology and business process services.
12+ YOEBachelor's degree required; 12+ years software engineering with principal-level leadership, expertise in backend languages and modern frontend frameworks, high-scale distributed systems, and AI-assisted development.
C#/.NET, Go, Java, Python, React, Copilot, Claude Code, Cursor
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3w
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Lead Software Engineer - Fullstack - AXS
Los Angeles, California, United States
$165k-$185k/yr HybridFull Time
AEG Worldwide
AEG Worldwide: Operates live entertainment venues and professional sports franchises worldwide.
7+ YOE7+ years software development with technical leadership; expertise in HTML/CSS/JavaScript/TypeScript, React/Next.js, C#/.NET Core; API design, performance, accessibility; BS in Computer Science.
HTML, CSS, JavaScript, TypeScript, React, Next.js, C#, .NET Core, AWS, Node.js
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6d
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Staff Software Engineer, Fullstack-MarTech
New York City or San Francisco or United States or Los Angeles or Seattle or Austin or Washington, D.C. or Philadelphia or San Diego or Chicago or Atlanta or Salt Lake City or Australia or Canada or South America
$170k-$250k/yr HybridFull Time
Flex
Flex: A financial platform allowing renters to split monthly rent payments.
8+ YOERequires 8+ years software development, 6+ years Java, 3+ years TypeScript and React, plus AWS, scalable APIs, event-driven systems, web performance, and cross-functional communication experience.
Java, Spring Boot, TypeScript, React, AWS, Spring, Gradle, JUnit, JVM, EKS, Aurora RDS, ElastiCache, DynamoDB, REST APIs, Braze, Singular, AppsFlyer, Branch, Google Tag Manager, Amplitude, LaunchDarkly, Meta, Google, TikTok, Apple, Snowflake, GitHub Actions, git, DataDog, CDK, Terraform, React Native
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1w
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Sr. Fullstack Developer, Originations
Mexico or Brazil or Canada or Los Angeles or Pasadena or United States
$80k-$95k/yr RemoteContract
Scratch Financial
Scratch Financial: Provides point-of-sale financing and payment processing for healthcare providers.
5+ YOERequires 5+ years of software engineering experience, strong Node.js and TypeScript backend skills, RESTful APIs, React, HTML, CSS, JavaScript, SQL/NoSQL databases, and English fluency.
Node.js, TypeScript, RESTful APIs, React, HTML, CSS, JavaScript, SQL, MySQL, PostgreSQL, Firestore, Redis, Docker, Kubernetes, Google Cloud Platform, PHP, Golang, Playwright, Cypress, Selenium, CI/CD, Continuous Integration, Continuous Delivery, Agile, Scrum, AI
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2w
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Fullstack Engineer (Javascript, node.js, SQL)
Pasadena, California, United States
$90k-$162k/yr HybridFull Time
Siemens Healthineers
Siemens HealthineersXetra: SHL: Manufacturer of medical diagnostic and imaging equipment.
Bachelor's degree in computer science or related discipline, or equivalent experience; production web application experience; Node.js, PostgreSQL, JavaScript, and Kubernetes experience; knowledge of web architecture and API design.
Node.js, PostgreSQL, JavaScript, Kubernetes
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