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63 junior backend developer jobs at 43 companies in Fairfield, CA

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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
1w
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Backend Software Engineer
San Francisco, California, United States
$100k-$130k/yr HybridFull Time
Ketch
Ketch: Data permissioning platform for automated privacy and compliance.
1+ YOE1+ year software engineering experience; strong backend development in Golang (or Java/Python/Scala); experience with cloud-native production systems, distributed systems, CI/CD, and databases; strong communication and collaboration skills.
Golang, Java, Python, Scala, AWS, GCP, Azure, Github Actions, Redis, Cassandra, DynamoDB, ScyllaDB, Postgres, ElasticSearch, git, GitHub, Kubernetes
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4w
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Backend Engineering Intern
San Francisco or Istanbul or Ankara
HybridFull Time, Internship
PlusMinusOne
PlusMinusOne: Develops and markets a portfolio of utility and lifestyle apps
0+ YOE3rd/4th-year CS or engineering student with backend interest; hands-on backend experience via coursework/projects/internships; OOP, data structures, algorithms, and Git familiarity; strong analytical and communication skills.
Git
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2mo
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Software Engineer- Backend Intern (Fall 2026)
San Francisco, California, United States
$29/hr OnsiteInternship
Astranis
Astranis: Builds and operates small geostationary communications satellites.
Pursuing a CS degree; strong Python; databases and pub/sub/streaming experience; open to applicants not matching all criteria.
Python, PostgreSQL, RabbitMQ, Apache Flink, Kubernetes
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1w
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Software Engineer, Backend, Level 4
Santa Monica or Los Angeles or New York City or Bellevue or Seattle or San Francisco or Palo Alto
$157k-$235k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Develops social media applications and augmented reality technology.
2+ YOEBachelor's in CS or equivalent experience, 2+ years post-degree software development experience, distributed systems/backend experience, strong collaboration skills, proficiency with Java/C++/Python and cloud/NoSQL systems, ability to use AI tools responsibly.
Java, C++, Python, NoSQL, Memcache, Redis, Kubernetes, Google services, AWS services, AI tools
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1mo
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Senior Software Engineer - Backend
New York City or San Francisco or London or Sydney
$170k-$240k/yr OnsiteFull Time
Sigma Computing
Sigma Computing: Cloud-native analytics platform featuring a spreadsheet-style interface.
2+ YOE2+ years building high-quality software; strong CS fundamentals; experience with backend services, continuous deployment, and cloud infrastructure; teamwork and ownership mindset.
Rust, Go, GraphQL, Node, Kubernetes, SQL, Python, GCP, AWS, Azure
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4w
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Software Engineer, Backend (mid level)
Bengaluru or San Francisco
HybridFull Time
Instabase
Instabase: Automates data extraction and analysis for unstructured enterprise content
2+ YOEBS/MS/PhD or equivalent experience; 2+ years professional software development; proficiency with Docker, Kubernetes and cloud (AWS, GCP, Azure); strong CS fundamentals and customer-focused mindset.
AI Hub, Docker, Kubernetes, AWS, GCP, Azure
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2mo
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Software Engineer Intern - Backend Focused - Winter 2027
New York or San Francisco or Seattle
OnsiteInternship, Temporary
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
Current undergraduate/graduate student in CS or related field, previous software engineering internship experience with Python, backend programming skills, strong communication and critical thinking.
Python, Slack, Microsoft 365
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1mo
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Junior Design Engineer, Americas
New York or San Francisco or Austin or Portland or Los Angeles or Seattle or Boston or Chicago or Denver or United States
$98k-$165k/yr RemoteFull Time
Ashby: Provides all-in-one recruiting software for high-growth businesses.
0+ YOEDesign and implement UI/UX and production-quality code; proficiency with TypeScript, React, CSS; familiarity with backend technologies (Node.js, GraphQL, Postgres, Redis); strong visual design and product thinking. Junior applicants: 0–2 years industry experience.
TypeScript, React, GraphQL, Node.js, Postgres, Redis, CSS
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1mo
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Frontend Developer (React) Junior/Mid
San Francisco, California, United States
RemoteFull Time
CareerSwift
CareerSwift: AI-powered recruitment and job search automation platform
3+ YOERequires 3+ years with React, JavaScript/TypeScript, modern CSS frameworks, and REST/GraphQL API integration; experience optimizing UI performance and collaborating with designers/backend engineers.
React, JavaScript, TypeScript, REST, GraphQL, CSS
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1mo
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Frontend Engineer
San Francisco, California, United States
$150k-$200k/yr OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
2+ YOE2+ years software development; experience defining frontend architecture; hands-on Kubernetes; APIs/backend experience; background in systems or distributed systems.
Kubernetes, Grafana, WebSockets, GitOps
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1w
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Software Development Engineer, Music Metrics & Data Platform
San Francisco, California, United States
$165k-$224k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
2+ YOE2+ years professional software development and design/architecture experience; experience with mobile or backend development; familiarity with cross-platform frameworks; strong communication and mentoring skills.
Kotlin Multiplatform, TypeScript, AWS, Android, iOS
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1mo
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Full-Stack Engineer
San Francisco, California, United States
$157k-$235k/yr HybridFull Time
Stripe
Stripe: Provides online payment processing and financial infrastructure for businesses.
1+ YOEBachelor's in CS or related plus 1 year software development (including internship), 1 year Python, backend API design, front-end UI development, data analysis experience, and contributions to large-scale codebases.
Python, APIs
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3w
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Software Developer
Luxembourg or Seoul or Paris or San Francisco
HybridFull Time
Hopae
Hopae: Provides decentralized digital identity and verification infrastructure.
2+ YOE2+ years backend experience with Node.js and TypeScript; experience designing scalable systems, APIs, and integrations with eID/auth systems; familiarity with Docker, message brokers, and cloud environments.
Node.js, TypeScript, Nest.js, MySQL, MongoDB, RESTful APIs, WebSocket, GraphQL, OpenID Connect, OAuth 2.0, JWT, Docker, RabbitMQ, Kafka, GitHub Actions, AWS CodePipeline, AWS CloudWatch, AWS, GCP, Slack, Notion, Figma, sd-jwt-js
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2w
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Software Engineer, Full Stack, Level 4
Los Angeles or New York City or Bellevue or Seattle or San Francisco or Palo Alto or Santa Monica
$157k-$235k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
2+ YOEBachelor's degree or equivalent, 2+ years post-degree software development, proficiency in JavaScript/TypeScript, HTML, CSS and one or more backend languages (Java, Golang, NodeJs, Python), front-end frameworks, unit testing, and full-stack web development.
JavaScript, TypeScript, HTML, CSS, Java, Golang, NodeJs, Python, React, Angular, Vue, WebGL, Canvas, WebAssembly, Service workers, GraphQL, NoSQL, Memcache, Redis, Kubernetes, Google, AWS
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3w
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Software Engineer III, Cloud Security, Identity and Access Management
Sunnyvale or San Francisco
$147k-$211k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
2+ YOEBachelor's degree or equivalent, 2 years C++ development, backend and distributed systems experience, SQL and data modeling, strong communication and critical thinking.
C++, SQL, Google Cloud Platform (GCP)
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2mo
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AI Engineer
San Francisco, California, United States
OnsiteFull Time
Emanate
Emanate: A technology building AI-powered revenue infrastructure.
Backend/AI engineer role focusing on AI infrastructure, LLM integration, data pipelines, and scalable autonomous workflows.
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3mo
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Software Engineer
San Francisco or Bellevue or New York
$175k-$280k/yr OnsiteFull Time
Sesame
Sesame: Designing wearable computers with lifelike voice-driven AI agents.
Backend engineer proficient in at least one language; strong distributed systems, databases, REST/gRPC; Kubernetes; on-call reliability.
Kubernetes, REST, WebSockets, gRPC, HTTP, Relational databases, NoSQL, Message queues, Caches, Search indexes
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1w
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Software Engineer II, Power Plant Software
Berkeley, California, United States
$112k-$147k/yr HybridFull Time
Form Energy
Form Energy: Developing multi-day batteries for grid-scale energy storage.
2+ YOEBachelor's degree plus 2+ years software engineering experience; full‑stack UI and backend development; experience with React; familiarity or willingness to learn Python, Go, gRPC, Protobuf, and industrial protocols; strong collaboration and ownership.
React, Python, Go, gRPC, Protobuf, Modbus, DNP3, CAN
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1mo
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Product Engineer
San Francisco, California, United States
OnsiteFull Time
Goodfire
Goodfire: Developing tools to interpret and steer artificial intelligence systems.
2+ YOE2+ years building production software; full‑stack depth in frontend, backend, systems, or infrastructure; strong product judgment; collaboration with research, design, and customer teams; focus on model interpretability.
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2w
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Software Engineer, Product
San Francisco or New York City
$141k-$225k/yr HybridFull Time
Pave
Pave: Cloud-based software for managing and benchmarking employee compensation.
2+ YOE2+ years engineering experience (full-stack, backend, or frontend); experience with TypeScript and Node.js preferred; strong product instincts, collaboration, and execution focus; B2B SaaS experience a plus.
TypeScript, Node.js
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