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251 backend software engineer jobs at 134 companies in Fullerton, CA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
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
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Backend Cloud Software Engineer
Monrovia, California, United States
$90k-$115k/yr OnsiteFull Time
Ampure Charging Systems
Ampure Charging Systems: Designs and manufactures electric vehicle and industrial charging solutions.
4+ YOE4+ years backend development; BS/MS in CS/Software Eng; Python, Java, Node.js; AWS; API design; databases; distributed systems.
Python, Java, Node.js, AWS, REST, GraphQL, DynamoDB, Lambda, ECS, AppSync, Cognito, Docker, CloudFormation, AWS SAM, Jenkins, CodePipeline, IoT, SQS, WebSockets, MQTT, HTTP
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Software Engineer (Backend), Content Foundations
San Francisco or Atlanta or Austin or Boston or Chicago or Dallas or Denver or Houston or Jacksonville or Los Angeles or Mexico City or Miami or New York City or Ottawa or Phoenix or Portland or Sacramento or Salt Lake City or San Diego or Seattle or Toronto or Vancouver or Washington, D.C.
$104k-$187k/yr HybridFull Time
Scribd
Scribd: Subscription-based digital library for e-books, audiobooks, and documents.
4+ YOE4+ years as a software engineer; backend/data pipelines; comfortable with messy data; proficient in Ruby, Python, or Go; AWS experience; SQL; collaborative and communicative.
Ruby, Python, Go, AWS, S3, SQS, SNS, SQL
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2mo
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Backend Engineer - PCB CAD Integration
Los Angeles, California, United States
$150k-$160k/yr RemoteFull Time
Quilter
Quilter: Automates printed circuit board layout using physics-driven AI.
3+ YOE3+ years backend software experience; expert Python; strong API design and distributed systems; leadership and collaboration; startup environment adaptability.
Python, Backend frameworks, AWS, Docker, Kubernetes, Terraform, JSON, XML, protobuf
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3w
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Backend Engineer
Los Angeles, California, United States
$150k-$165k/yr HybridFull Time
SKIMS
SKIMS: Designs and sells intimate apparel and loungewear.
3+ YOE3+ years building backend applications with Python and Django; experience with AWS services (SNS, SQS, API Gateway, Step Functions, S3); strong communication, stakeholder collaboration, and production deployment experience.
Python, Django, AWS, SNS, SQS, API Gateway, Step Functions, S3, Claude Code, AWS Glue
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1mo
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Backend Engineer
Arvada or San Francisco or Washington or Seattle or Los Angeles
$120k-$180k/yr HybridFull Time
Quindar
Quindar: Cloud-native software for automated satellite mission operations.
3+ YOE3+ years backend development experience, proficiency with Python, AWS, GraphQL, Docker, Terraform, Kubernetes, Git; Bachelor’s in CS or related; U.S. Person required and ability to obtain U.S. security clearance.
Python, GraphQL, Docker, Terraform, OpenAI, Anthropic, AskSage, Kubernetes, EC2, S3, RDS, Fargate, EKS, Lambda, ECS, CloudWatch, EFS, EBS, Git, GitHub, GitLab, Fargate
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2mo
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Senior Software Engineer, Backend
Long Beach, California, United States
$159k-$267k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
6+ YOE6+ years backend experience; BA/BS in CS/engineering; strong cloud, API, security, and distributed systems; proficient in Python/Go/Rust/C++
Docker, Kubernetes, Linux, API design, Security
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1w
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Senior Software Engineer, Backend
Calabasas, California, United States
$120k-$145k/yr OnsiteFull Time
AmaWaterways
AmaWaterways: Provides luxury river cruise vacations on international waterways.
5+ YOEBachelor's degree or 5+ years related experience; 5+ years backend development; strong .NET (C#) and/or Node.js, REST/GraphQL, event-driven architectures, SQL and caching (Redis), cloud (Azure) and CI/CD experience.
.NET (C#), Node.js, GraphQL, Azure Service Bus, Redis, SQL Server, PostgreSQL, Auth0, OIDC/OAuth2, JWT, Git/GitHub, Azure DevOps, GitHub Actions, Microsoft Office Suite, ARM templates, Bicep, Terraform, Dash0, Datadog, New Relic, Salesforce
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3w
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Backend Engineer, Flag Delivery
Oakland or San Francisco or New York City or Boston or Seattle or Irvine or Los Angeles or Monterey or Santa Barbara or Santa Rosa or Austin or Portland or Philadelphia or Chicago or United States
$146k-$235k/yr OnsiteFull Time
LaunchDarkly
LaunchDarkly: Provides a feature management platform for software development teams.
5+ YOE5+ years backend engineering experience building/operating production distributed systems; strong programming in Go/Java/Rust; production debugging, observability, on-call experience; clear AI usage in engineering work.
Go, Java, Rust
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3w
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Senior Backend Engineer
Romania or London or New York City or Los Angeles
$100k-$170k/yr HybridFull Time
Aurora
Aurora: AI-native travel and lifestyle management for high-performance individuals
5+ YOE5+ years building and operating production backend systems; strong Python and Django experience; SQL, Celery, GCP and Terraform experience; familiarity with LLMs, RAG pipelines and production reliability.
Python, Django, DRF, Celery, GCP, Terraform, SQL, LLMs, RAG, Flutter, Vue
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1w
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Staff Backend Engineer
Los Angeles, California, United States
$20k-$230k/yr HybridFull Time
Arena Club
Arena Club: Digital marketplace and vaulting service for sports collectibles
8+ YOE8+ years backend experience; strong Node.js, TypeScript, Postgres; experience scaling marketplaces/eCommerce; AWS, Docker, Terraform; EM tools like GitHub Copilot/Tabnine; excellent communication and architecture skills.
Node.js, TypeScript, Postgres, GitHub Copilot, Tabnine, Claude Code, Cursor, Python, AWS, S3, SQS, GCP, Docker, Terraform, LLM
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2mo
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Senior Backend Engineer
San Francisco or Toronto or Los Angeles or Raleigh
$168k-$210k/yr HybridFull Time
BuildOps
BuildOps: SaaS platform for managing commercial contracting businesses.
5+ YOE5+ years backend or full-stack experience; 1–2+ years in senior/lead roles; Node.js with TypeScript; GraphQL/REST APIs; distributed systems; strong CS fundamentals; ability to own projects end-to-end; AI tooling experience preferred.
Node.js, TypeScript, GraphQL, REST, Docker, Kubernetes, Python
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1mo
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Software Engineer, Backend, Level 5 – Ads Delivery
Bellevue or Los Angeles
$178k-$313k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Develops social media applications and augmented reality technology.
6+ YOEBachelor's or equivalent; 6+ years post-Bachelor’s software development experience; experience with distributed systems, large-scale backend services, Java/C++/Python, NoSQL, Redis/Memcache, Kubernetes, cloud services, and operating highly-available systems.
Java, C++, Python, NoSQL, Memcache, Redis, Kubernetes, Google services, AWS services, AI tools
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2mo
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Engineer II, Backend APIs
Los Angeles or Boulder
$115k-$135k/yr HybridFull Time
Magnite
MagniteNASDAQ: MGNI: Independent sell-side platform for digital media advertising.
3+ YOE3+ years software engineering; Java backend; Postgres; Git; strong communication.
Java, PostgreSQL, Git, OpenAPI, Docker, Kubernetes
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2mo
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Senior Backend Engineer (Rust)
Marina del Rey, California, United States
OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
7+ YOE7+ years backend/systems engineering experience; proficiency in Rust or strong systems programming background; experience with high-throughput time-series data, data pipelines, and storage/query systems; cloud and streaming experience preferred.
Rust, C++, AWS, GCP, Kafka, Spark, Flink, PostgreSQL, CockroachDB, HBase
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2w
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Senior Backend Engineer
Los Angeles or New York City or San Francisco
$170k-$200k/yr HybridFull Time
Tatari
Tatari: A platform for buying and measuring TV advertising campaigns.
6+ YOE6+ years software development (Python required), 4+ years building distributed systems and modern data stacks, deep SQL and data modeling, experience with LLMs and agentic coding tools, strong communication and cross-team collaboration.
Python, Cursor, Copilot, Cody, RDS, Databricks, Spark, Redshift, Kafka, Airflow, dbt, SQL, REST, gRPC, GraphQL
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1mo
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Senior Software Engineer (Backend)
Rosemead, California, United States
$109k-$153k/yr HybridFull Time
Panda Restaurant Group
Panda Restaurant Group: Operator of American Chinese fast-casual restaurant chains.
5+ YOEBachelor's in CS or related field, 5+ years building scalable services, proficiency with C#, Java, Python, leadership and mentoring experience, required trainings and food handler card within 30 days.
C#, Java, Python
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3mo
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Senior Backend Engineer - Growth
Los Angeles, California, United States
$157k-$230k/yr RemoteFull Time
Atticus
Atticus: Platform connecting people to disability benefits and legal aid.
5+ YOE5+ years of production software experience; data and experimentation infra; ability to balance velocity and system health; translate ambiguous requirements; collaborate with PMs; backend-focused with generalist mindset.
Go, GCP, Kubernetes, Terraform, Salesforce
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3w
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Staff Backend Engineer, Safety
United States or San Francisco or Los Angeles or New York City or Chicago
$217k-$304k/yr RemoteFull Time
Reddit
RedditNYSE: RDDT: Social platform for community-driven discussion and content sharing.
8+ YOE8+ years software development experience; proficiency in Go, Python, Rust, or Ruby; experience with GraphQL/REST/HTTP/Thrift/gRPC; BS in Computer Science or equivalent practical experience; strong organizational and cross-functional remote collaboration skills.
Go, Python, Rust, Ruby, GraphQL, REST, HTTP, Thrift, gRPC
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3w
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Senior Software Engineer, Back-End (Vault)
California or Santa Ana or New Jersey or Texas or Florida or Japan or Shanghai or Hong Kong or Canada or Mexico or Germany or France
$141k-$229k/yr HybridFull Time
Collectors
Collectors: Providing authentication and grading services for high-value collectibles.
5+ YOE5+ years building web applications, APIs, and distributed systems; 2+ years AWS experience (serverless/event-driven); strong Java proficiency (C# a plus); use of modern AI developer tools; strong engineering fundamentals and mentorship experience.
AWS, Java, C#, Claude Code CLI, Codex, e-Verify
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2w
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Software Engineer, Software Modernization & Backend Systems
El Segundo, California, United States
$110k-$166k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
4+ YOEBachelor's in CS/CE/EE or related, 4+ years software engineering experience, backend/microservices/cloud architecture, data ingestion and automation experience, ability to obtain U.S. security clearance and occasional domestic travel.
Spring Boot, Camunda, BPMN, AWS, Microsoft Azure, Jenkins, Linux, REST, CI/CD, AI/ML, LLM, RAG, NLP
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