14 fullstack developer jobs at 12 companies in Eastvale, CA

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
2mo
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Fullstack Engineer
El Segundo, California, United States
$130k-$185k/yr HybridFull Time
Picogrid
Picogrid: Develops hardware and software for autonomous defense systems.
React and TypeScript frontend experience; strong UI/UX sense; comfortable with ambiguity; ownership mindset; full-stack capability.
React, TypeScript, Deck.gl, Mapbox, MapLibre
1mo
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Sr. Fullstack Product Engineer - (Frontend Focus)
Los Angeles, California, United States
$140k-$180k/yr RemoteFull Time
Salt AI
Salt AI: Provides an AI orchestration platform for life sciences organizations.
Deep frontend craft with React and TypeScript, strong product and design taste, fullstack production experience (Python/Django, APIs), experience with AI-assisted tooling, and ability to work remotely during US time zones.
React, TypeScript, Python, Django, Claude Code, Cursor, Codex, GitHub
1mo
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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
4w
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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
4w
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Fullstack Software Engineer, New Grad
Los Angeles, California, United States
$115k-$140k/yr OnsiteFull Time
Hadrian
Hadrian: Building autonomous factories for aerospace and defense manufacturing.
Recent graduate with a Bachelor's or Master's in CS/CE or related, proficiency in TypeScript/React/Python/Go, strong problem-solving and communication, ability to work onsite in Los Angeles.
TypeScript, React, Python, Go, CAD
2d
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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
1mo
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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
1mo
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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
2mo
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Staff Software Engineer - Fullstack
Los Angeles or Adrian
HybridFull Time
Observable Space
Observable Space: Developing integrated hardware and software for persistent space observation.
8+ YOE8+ years in software engineering; 2–3 years in staff/principal/lead roles; strong in Java/Kotlin/C++/C#; data modeling with RDBMS/ETL; TDD; experience in distributed systems and reactive frontend; ability to lead and influence engineering standards.
Java, Kotlin, C++, C#, TypeScript, React, SQL, ETL, Kotlin (backend), JVM
1w
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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#
1w
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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 in building production systems across infrastructure, databases, distributed systems; strong communication and mentoring skills.
React, Java, C#
1w
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Sr Software Engineer II - Fullstack - Apex Events
Los Angeles, California, United States
$145k-$165k/yr HybridFull Time
AXS
AXS: Provides digital ticketing and marketing solutions for live events.
6+ YOE6+ years software development experience; strong web fundamentals (HTML,CSS,JavaScript,TypeScript); React/Next; C# and .NET Core; relational databases; distributed services; excellent communication and mentoring skills.
HTML, CSS, JavaScript, TypeScript, ReactJS, NextJS, C#, .NET Core, Microsoft SQL Server, Oracle, MySQL, PostgreSQL, AWS, NodeJS, Docker, Kubernetes, Git, Kafka, Elasticsearch, DynamoDB, CI/CD, TDD, BDD
1w
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Sr Software Engineer II - Fullstack - Apex Events- AXS
Los Angeles, California, United States
$145k-$165k/yr HybridFull Time
AEG Worldwide
AEG Worldwide: Operates live entertainment venues and professional sports franchises worldwide.
6+ YOE6+ years software development, strong full‑stack web experience with TypeScript/React or NextJS, C#/.NET Core, relational databases, RESTful APIs, and mentoring experience.
HTML, CSS, JavaScript, TypeScript, ReactJS, NextJS, C#, .NET Core, Microsoft SQL Server, Oracle, MySQL, PostgreSQL, AWS, NodeJS, Docker, Kubernetes, Git, CI/CD, Kafka, Elasticsearch, DynamoDB, TDD, BDD
2mo
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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