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615 back end engineer jobs at 300 companies in California

1mo
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Sr Backend Engineer
San Francisco or New York
$167k-$219k/yr HybridFull Time
Quizlet
Quizlet: American private education technology providing digital study tools for students, teachers, professionals, and lifelong learners.
4+ YOE4+ years backend or data engineering experience; strong SQL and data warehouse experience; proficiency in Python/Java/Scala; Elasticsearch/OpenSearch experience; experience building production data pipelines and backend services.
Elasticsearch, OpenSearch, SQL, Snowflake, BigQuery, Redshift, Python, Java, Scala, Airflow, Dagster, Prefect, dbt, REST, gRPC, Datadog, Prometheus, Grafana, Docker, Kubernetes, AWS, GCP, Azure, Spark, Kafka, Flink, FAISS, ScaNN, pgvector, LightGBM, XGBoost, BM25, HNSW, kNN
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1mo
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Principal Engineer, Backend Engineering
San Francisco, California, United States
$210k-$274k/yr OnsiteFull Time
Atlassian
AtlassianNASDAQ: TEAM: Unleashing the potential of every team.
Expert backend engineering to design and lead an AI proxy platform, ensure high availability, cost-efficiency, security integration, and mentor engineering teams.
Codex, Cursor, Claude Code, Rovo CLI
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3mo
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Software Engineer, Back-End
San Francisco or Seattle
$164k-$284k/yr HybridFull Time
Superhuman
Superhuman: Private AI productivity platform for people and teams, combining writing, collaborative docs, email, and proactive AI agents.
5+ YOE5+ years back-end development, production systems at scale, cloud platforms, AI-powered systems, APIs, CI/CD, real-time architectures, independent and collaborative work.
Go, AWS, GCP, Azure, CI/CD, Infrastructure as Code, Real-time systems
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2mo
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Senior Backend Engineer
San Francisco, California, United States
OnsiteFull Time
Slope
Slope: Private fintech platform that helps B2B businesses accept payments, access credit, and automate underwriting and order-to-cash workflows.
5+ YOE5+ years backend experience; strong Node.js/TypeScript and Python skills; strong SQL and relational/database/ETL experience; API and service design; experience productionizing models and working with data science and risk teams.
Node.js, TypeScript, Python, SQL, Postgres, Snowflake, AWS
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3w
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Java Back end Engineer
Cupertino, California, United States
$100k-$115k/yr OnsiteFull Time
Quest Global
Quest Global: Global engineering services and product development solutions provider.
8+ YOERequires 8–12 years in back-end application development, strong Java, Spring, Spring Boot, REST API, SQL, and Git experience, plus Docker, Kubernetes, AWS, CI/CD, debugging, and collaboration skills.
Java, Spring, Spring Boot, REST APIs, SQL, Git, Docker, Kubernetes, AWS, CI/CD
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Backend Engineer
San Francisco, California, United States
$140k-$185k/yr HybridFull Time
Scribe
Scribe: Workflow AI software that helps organizations capture, improve, and scale how work gets done.
3+ YOE3+ years building backend applications, strong Python skills, experience optimizing endpoints and database queries, automated testing, and collaborative engineering practices.
Python, Django, PostgreSQL, Redis, Celery, AmazonMQ, Terraform, AWS
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3mo
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Backend Engineer
San Francisco, California, United States
$190k-$230k/yr OnsiteFull Time
Lapel
Lapel: Private software building customer-operations infrastructure for internet businesses.
3+ YOE3+ years backend or software engineering; API design; backend architecture; Node.js/Python/Go; PostgreSQL/MySQL; scalable systems; customer-focused.
Node.js, Python, Go, PostgreSQL, MySQL, TypeScript, Temporal, Pulsar
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1mo
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Backend Engineer
California or Colorado or Georgia or Idaho or Illinois or Kansas or Massachusetts or Maryland or Michigan or Minnesota or New Jersey or New York or Ohio or Oregon or Pennsylvania or Rhode Island or Texas or Washington
$180k-$220k/yr RemoteFull Time
Unit21
Unit21: Private AI risk-infrastructure helping banks and fintechs detect fraud and manage anti-money-laundering operations.
5+ YOE5+ years in data/software engineering, experience with large-scale data processing, advanced SQL, Python/OOP, cloud platforms, and infrastructure-as-code (Terraform).
Apache Spark, Databricks, Flink, Beam, Python, SQL, AWS, Azure, Google Cloud, Terraform
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1w
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Backend Engineer
Los Angeles or Beverly Hills or New York City
$145k-$180k/yr HybridFull Time
Genius
Genius: US digital music-media platform where artists, contributors, and fans annotate lyrics and explore music knowledge.
4+ YOEAt least 4 years of backend or data engineering experience; proficiency in Ruby on Rails, databases, ELT pipelines, Apache Airflow, APIs, and scalable systems. Computer Science degree preferred, not required.
Ruby on Rails, PostgreSQL, ClickHouse, BigQuery, Apache Airflow
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2mo
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Backend Engineer
San Francisco, California, United States
$130k-$200k/yr OnsiteFull Time
Sandberg Goldberg Bernthal Family Foundation
Sandberg Goldberg Bernthal Family Foundation: The Sandberg Goldberg Bernthal Family Foundation works to build a more equal and resilient world.
3+ YOE3+ years backend or full-stack engineering experience with data/analytics; strong Python (preferred) or Node.js/Ruby/Java, SQL and NoSQL skills; experience building data pipelines, defining metrics, A/B testing, and data visualization; bachelor's in CS/data field or equivalent.
Python, Node.js, Ruby, Java, SQL, NoSQL, RESTful APIs
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1mo
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Backend Infrastructure Engineer
San Francisco or North America
$200k-$250k/yr HybridFull Time
Firecrawl
Firecrawl: Private AI data infrastructure providing APIs that turn web pages into clean data for developers and AI agents.
3+ YOE3+ years in backend, networking, or infrastructure engineering; production ownership and on-call responsibility; authorized to work in the US or eligible remote regions.
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3mo
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Senior Backend Engineer
San Francisco, California, United States
$150k-$300k/yr OnsiteFull Time
Amari AI
Amari AI: AI customs-entry automation platform for customs brokers, automating document-heavy filings and regulatory compliance workflows.
4+ YOE4–6 years backend software engineering in a high-growth startup; ownership of backend systems; strong architectural judgment; in-person SF collaboration.
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4mo
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Senior Backend Engineer (Python)
San Francisco, California, United States
$175k-$250k/yr RemoteFull Time
Ellipsis Health
Ellipsis Health: Healthcare AI providing an emotionally intelligent voice care manager for health plans and health systems.
4+ YOE4+ years building production back-ends in Python; real-time streaming; AWS/GCP/Azure; PostgreSQL/Redis; FastAPI/asyncio; HIPAA security.
Python, FastAPI, asyncio, WebRTC, WebSockets, gRPC, AWS, GCP, Azure, Kubernetes, Kafka, SQS, Pub/Sub, Terraform, PostgreSQL, Redis, OpenTelemetry
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1mo
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Senior Backend Engineer (Go)
Casablanca or Palma de Mallorca or Europe or London or New York City or San Francisco or Africa
HybridFull Time
Nuitée
Nuitée: Irish travel-technology platform providing hotel-distribution APIs and booking infrastructure for airlines, banks, OTAs, and travel companies.
Strong hands-on Go experience, history integrating third-party APIs, ownership of end-to-end integrations, and ability to work at high scale and low process.
Go
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Backend Engineer, AI Systems
Sunnyvale, California, United States
$177k-$195k/yr OnsiteFull Time
GFiber: An Alphabet providing fiber and webpass internet services to homes and businesses.
5+ YOEBachelor's or equivalent experience, 5+ years software development, Python, GCP, microservices, REST APIs, production support, and practical experience with LLMs/AI agents and RAG/MCP pipelines.
Python, RAG, Model Context Protocol (MCP), RESTful APIs, Google Kubernetes Engine (GKE), Cloud Run, Google Cloud Observability (Stackdriver), OpenTelemetry, Google Cloud Platform (GCP), AntiGravity, Claude, Cursor, Java, Kotlin
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1mo
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Senior Software Engineer – Back End
San Diego, California, United States
$150k-$185k/yr HybridFull Time
Tillster
Tillster: Restaurant commerce software provider helping quick-service and fast-casual brands manage ordering, delivery, loyalty, and guest data.
6+ YOE6+ years back-end engineering with strong Java, experience designing plugin/SPI architectures, low-level device/protocol work, payment-terminal/POS integrations, and technical leadership.
Java, Maven, Spring, ServiceLoader, OSGi, jssc, usb4java, REST, SOAP, EMV, ISO 8583, TLS, mTLS, PCI-DSS, PayTerminal SPI
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3mo
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Backend Engineer
San Mateo, California, United States
OnsiteFull Time
Luminary
Luminary: Physics AI platform helping engineering teams build, verify, and ship physical products.
10+ YOE10+ years building high-performance backend systems; Kubernetes expertise; SaaS focus; cloud infrastructure and security; leadership and mentoring; strong communication.
Kubernetes, Docker, GCP, CI/CD
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2w
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Backend Engineer
San Francisco, California, United States
OnsiteFull Time
Raindrop
Raindrop: AI-agent monitoring platform helping engineering teams detect, trace, and fix silent production failures.
Experience scaling applications, balancing short- and long-term speed, building or using AI products and tools, and solving complex problems in person in San Francisco.
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2w
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Backend Engineer
San Francisco, California, United States
$130k-$200k/yr OnsiteFull Time
Mintlify
Mintlify: Private developer-documentation platform helping organizations create, manage, and publish technical documentation.
Strong experience with systems design, API architecture, databases, and production systems; product intuition, ownership, adaptability, and customer collaboration are required.
API, databases, caching, queues
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Backend Engineer
California or United States
HybridFull Time
Arena Intelligence
Arena Intelligence: AI model evaluation platform serving enterprises, AI labs, and independent researchers in real-world workflows.
5+ YOE5+ years backend experience building product-facing APIs, services, and data systems; strong Go proficiency; Postgres/Redis/data-scaling skills; product and ambiguity comfort.
Go, Postgres, Redis, Stripe, Metronome, Orb, OpenAI, Anthropic, Google, vLLM, LiteLLM, LangChain
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