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Fairfield • 50 milesRemote · Hybrid · Onsite · Field · All Environments

Fairfield • 50 milesRemote · Hybrid · Onsite · Field · All Environments

Fairfield • 50 milesRemote · Hybrid · Onsite · Field · All Environments

Fairfield • 50 milesRemote · Hybrid · Onsite · Field · All Environments

195 backend java developer jobs at 110 companies in Fairfield, 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

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1mo

Senior Java Backend Engineer - 8+ Years Experience Required

Casablanca or Porto or Aveiro or Coimbra or Leicester or San Diego or San Francisco or Chennai or Bengaluru or Cluj-Napoca or Blumenau or Australia

RemoteFull Time

Mindera

Mindera: Develops bespoke software systems and digital products for enterprises.

8+ YOE8+ years Java backend development, strong OOP and design patterns, Terraform, Git, CI/CD, Kafka, Kubernetes, GraphQL Federation, Azure, TDD, and fluent English.

Java, Kotlin, Terraform, Git, CI/CD pipelines, Kafka, Kubernetes, GraphQL Federation, Azure, Spring Boot, TDD

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2w

Senior Backend Engineer - Java

United States or Tampa or Boston or Atlanta or New York City or Columbus or Chicago or Philadelphia or Raleigh or Charlotte or Minneapolis or Dallas or Washington D.C. or Austin or Miami or Newark

$152k-$194k/yr RemoteFull Time

Real

RealNasdaq: REAX: Technology-driven brokerage offering residential real estate and title services.

8+ YOE8+ years experience with Java/Spring Boot, JPA/Hibernate, relational databases; experience designing event-driven microservices, strong testing practices, AI-assisted development familiarity, BA/BS or equivalent.

Java 17, Java 21, Spring Boot 3.x, JPA/Hibernate 6, Postgres, Kafka, DynamoDB, Redis, OpenSearch, AWS, Docker, Kubernetes, Datadog, ArgoCD, TeamCity, Claude Code, Cursor, Codex, Model Context Protocol (MCP), GitHub, SonarQube

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1mo

Backend Engineer

San Francisco, California, United States

$130k-$200k/yr OnsiteFull Time

Sandberg Goldberg Bernthal Family Foundation

Sandberg Goldberg Bernthal Family Foundation: Operates programs for women's empowerment and community resilience.

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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2mo

Senior/Staff Backend Engineer

New York or San Francisco

$170k-$220k/yr HybridFull Time

Casap

Casap: Building an AI-native disputes automation and fraud prevention platform with a mission to reduce fraud and streamline workflow for financial institutions.

6+ YOE6+ years in software development; at least 2 years with Go or Java in production; platform team/API/background services; end-to-end feature ownership; strong problem-solving and data structures knowledge; mentoring and technical leadership; strong communication.

Go, Java, CI/CD, microservices, backend development

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3w

Staff Backend Engineer

San Francisco, California, United States

$224k-$284k/yr OnsiteFull Time

Atoms

Atoms: Building robotics and software to automate physical world industries.

8+ YOE8+ years building backend systems with Java/Go, experience with PostgreSQL/MongoDB/Redis, cloud platforms (AWS/GCP/Azure), RESTful APIs, microservices, containers (Docker/Kubernetes), CI/CD, and mentoring experience.

Java, Go, PostgreSQL, MongoDB, Redis, AWS, GCP, Azure, RESTful APIs, Docker, Kubernetes, CI/CD

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3w

Staff Backend Engineer

San Francisco, California, United States

$224k-$284k/yr OnsiteFull Time

Atoms

Atoms: Building specialized industrial robots and physical AI systems.

8+ YOE8+ years building backend systems; proficiency in Java or Go; experience with PostgreSQL, MongoDB, Redis; cloud experience (AWS/GCP/Microsoft Azure); strong knowledge of RESTful APIs, microservices, distributed systems; Docker/Kubernetes and CI/CD experience; mentoring experience.

Java, Go, PostgreSQL, MongoDB, Redis, AWS, GCP, Microsoft Azure, Docker, Kubernetes, CI/CD

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1w

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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3w

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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1mo

Lead Backend Engineer

San Francisco or Lehi or Plano

$138k-$216k/yr HybridFull Time

Collective Health

Collective Health: Cloud platform for managing employer-sponsored health benefits.

10+ YOE10+ years backend engineering experience with Java and Spring Cloud, microservices and integration platform experience (Mulesoft), AI tooling familiarity, cloud (AWS/GCP), SQL/PostgreSQL, system development, and strong communication and leadership skills.

Java, Spring Cloud, Mulesoft, GitHub Copilot, Cursor, WindSurf, AWS, GCP, SQL, PostgreSQL

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1mo

Senior Backend Engineer – AI Platform

Boston or San Francisco or Seattle or Dallas or Salt Lake City or Portland or United States

$122k-$146k/yr RemoteFull Time

WEX

WEXNYSE: WEX: Provides global payment processing and business information management services.

5+ YOEBachelor's in CS/Software Engineering, 5–8 years software engineering experience; expertise in backend Java/C# (SpringBoot), REST/gRPC, SQL; experience building scalable distributed systems and AI/LLM-driven services.

Java, C#, SpringBoot, REST, gRPC, ODATA, SQL, OpenAI APIs, LangChain, Python, Kafka, Docker, Kubernetes, Model Context Protocol (MCP), Pinecone, Weaviate, OpenSearch, Milvus

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4w

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4w

Principal Backend Engineer (Live / Game)

San Francisco or New York City

HybridFull Time

Beast Industries

Beast Industries: Produces digital media and consumer goods for MrBeast brands.

15+ YOE15+ years building and operating consumer-scale, real-time backend systems; distributed-systems expertise, live-service architecture, AI-native tooling, strong technical leadership, and proficiency in Go/C++/Rust/Java.

Go, C++, Rust, Java

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1mo

Senior Backend Engineer

San Francisco, California, United States

$200k-$230k/yr OnsiteFull Time

Sauron Systems

Sauron Systems: Autonomous robotic platforms for residential security and threat deterrence.

5+ YOE5+ years building production backend systems; proficiency in Go, Python, Rust, Java, or C++; experience with distributed systems, REST/gRPC, PostgreSQL/MySQL/Redis/DynamoDB, AWS, Docker, Kubernetes, and observability; strong system design and debugging skills.

Go, Python, Rust, Java, C++, REST, gRPC, PostgreSQL, MySQL, Redis, DynamoDB, AWS, Docker, Kubernetes, Kafka, NATS, RabbitMQ

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2mo

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2mo

Software Engineer, Backend

San Francisco, California, United States

$140k-$185k/yr HybridFull Time

Sleeper: Mobile platform for fantasy sports leagues and fan communities.

3+ YOE3+ years backend software engineering; distributed systems; proficient in Go, Python, Node.js, or Java; SQL/NoSQL databases; REST/GraphQL; AWS/GCP; Docker; Kubernetes; strong collaboration.

Go, Python, Node.js, Java, SQL, NoSQL, Kafka, RabbitMQ, Pub/Sub, REST, GraphQL, AWS, GCP, Docker, Kubernetes

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Senior Network Backend Engineer

San Francisco or San Diego

$215k-$266k/yr HybridFull Time

Point One Navigation

Point One Navigation: High-precision positioning for autonomous systems and robotics.

7+ YOE7+ years backend/distributed systems experience, proficiency in Go/Java/Python, networking fundamentals (TCP/IP,TLS,HTTP), cloud (AWS/GCP), observability, testing, and strong design and operational skills.

Go, Java, Python, TCP/IP, TLS, HTTP, gRPC, Kafka, Flink, Spark, Hadoop, AWS, GCP, NTRIP

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1w

Sr. Backend Engineer - Activations

San Francisco or New York City or Seattle or Little Rock

$130k-$197k/yr HybridFull Time

LiveRamp

LiveRampNew York Stock Exchange: RAMP: Provides a platform for secure data collaboration and identity.

5+ YOE5+ years writing production code; strong Java/Scala/Golang skills; 3+ years with Big Data ecosystems (Spark, Hadoop/MR, Kafka); distributed systems and RESTful API experience; Spring Boot; cloud experience (GCP/AWS/Azure).

Java, Scala, Golang, Spark, Hadoop/MR, Kafka, RESTful APIs, OAuth, GCP, AWS, Azure, Spring Boot, Singlestore

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2w

Senior Back End Engineer

San Francisco or California or New York or United States

$185k-$225k/yr RemoteFull Time

Troveo

Troveo: Licenses high-quality video datasets for AI model training.

10+ YOE10+ years backend experience; 3+ years running production Kubernetes; experience with Elasticsearch, distributed systems, Docker, cloud-managed Kubernetes, Terraform; proficiency in Go, Python, Java, or TypeScript.

Kubernetes, Elasticsearch, Helm, GitOps, Go, Python, Java, TypeScript, Docker, EKS, GKE, AKS, Terraform, Argo CD, Flux, Istio, Linkerd, Temporal, Airflow, Prometheus, Grafana, OpenTelemetry, ELK

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2mo

Backend Engineer (SF/On-site)

San Francisco, California, United States

OnsiteFull Time

Soulside AI

Soulside AI: AI-powered documentation platform for behavioral health organizations.

2+ YOE2+ years software engineering; Spring Boot/Java; AWS; observability; distributed systems; HIPAA experience a plus.

Spring Boot, Java, Prometheus, Grafana, AWS, SQS, Kafka, Kinesis, Spring Security, RBAC, HIPAA, LLM, Terraform

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Staff Software Engineer-Backend

Fremont, California, United States

$182k-$220k/yr HybridFull Time

Scout Motors

Scout Motors: Designs and manufactures all-electric rugged SUVs and trucks.

8+ YOEBachelor's in CS or related,8+ years backend experience,proficiency in Go/Node.js/Python/Java,relational and non-relational databases,identity management experience,architecture and on-call responsibility.

Go, Node.js, Python, Java, MySQL, PostgreSQL, MongoDB, Redis, Azure AD, AWS Cognito, LDAP, Okta, Keyclock

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2d

Staff Backend Engineer, Identity Threat Protection

San Francisco, California, United States

$194k-$267k/yr HybridFull Time

Okta

OktaNASDAQ: OKTA: Provide secure identity management and authentication for enterprises.

7+ YOE7+ years building Java-based web applications, strong security background, experience with scalability and design patterns, CI/CD practices, excellent communication and leadership skills.

Java, Angular, ReactJS, Backbone, Vue

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2mo

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2mo

Staff Backend Engineer - Search FX (Discovery Experience)

Kitchener-Waterloo or Toronto or San Francisco

$191k-$262k/yr HybridFull Time

Faire

Faire: Online wholesale marketplace connecting independent retailers with unique brands.

7+ YOE7+ years software engineering; 3+ years leadership; strong AI/ML collaboration; Kotlin/Java backend expertise; search systems experience.

Kotlin, Java, Hibernate, Guice, Jersey, Elasticsearch, FAISS, Redis, DynamoDB, Protocol Buffers, HTTP, JSON, AWS, Kubernetes, Buildkite, Datadog

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