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66 junior platform engineer jobs at 47 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
2w
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Platform Engineer I
Pleasanton, California, United States
$32-$41/hr HybridFull Time
Blackhawk Network
Blackhawk Network: Provider of global branded payment and gift card solutions.
Bachelor's in CS/Engineering or equivalent; experience in platform/DevOps/SRE or similar; strong Linux, AWS, Git; scripting with Python/Bash; production support and incident management; experience with AI-assisted engineering tools.
AWS, Git, Python, Bash, Kubernetes, Docker, Jenkins, Splunk, New Relic, Prometheus, Grafana, OpenTelemetry, ServiceNow, Terraform, CloudFormation, GitHub Copilot, Cursor, Claude
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2w
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Platform Engineer I
Pleasanton, California, United States
$41/hr HybridFull Time
Blackhawk Network
Blackhawk Network: Provider of branded payment and gift card solutions.
Bachelor's in CS/Engineering or equivalent experience; platform/DevOps/SRE experience; strong Linux, AWS, Git; scripting in Python/Bash; experience with major incident management and AI-assisted development tools.
AWS, Kubernetes, Git, Python, Bash, GitHub Copilot, Cursor, Claude, Docker, Jenkins, Splunk, New Relic, Prometheus, Grafana, OpenTelemetry, ServiceNow, Terraform, CloudFormation, Linux
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1mo
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Platform Engineer (Kubernetes)
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; proficiency in Go and Kubernetes; experience with ArgoCD, CI/CD, cloud platforms (AWS, GCP, Azure); familiarity with Terraform, Helm, containerization, networking, and observability tools.
Go, Kubernetes, ArgoCD, Terraform, Helm, Ceph, WEKA, Prometheus, Grafana, Cilium, AWS, GCP, Azure, Ansible, Kubespray, Istio, Linkerd, CI/CD
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2w
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Platform Engineer I
Pleasanton, California, United States
$32-$41/hr HybridFull Time
Blackhawk Network
Blackhawk Network: Provider of branded payment solutions and gift cards.
Bachelor's degree or equivalent experience; platform/DevOps/SRE experience; strong Linux, AWS, Git; scripting with Python or Bash; experience in production incident management and modern AI-assisted development tools.
AWS, Kubernetes, Git, Python, Bash, GitHub Copilot, Cursor, Claude, Jenkins, Splunk, New Relic, Prometheus, Grafana, OpenTelemetry, ServiceNow, Terraform, CloudFormation, CI/CD
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2w
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Platform Engineer
San Francisco or United States
$88k-$147k/yr RemoteFull Time
Stitch Fix
Stitch FixNASDAQ: SFIX: Online personalized styling service and curated clothing delivery.
2+ YOE2+ years software development or infrastructure experience; experience with AWS, containers, CI/CD; strong debugging, problem decomposition, and developer-experience focus.
AWS, Terraform, Pulumi, CircleCI, Docker, ECS, EKS, Ruby, Golang, Python
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5d
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Robot Platform Software Engineer
Taipei or San Francisco
OnsiteFull Time
Anvil Robotics
Anvil Robotics: Modular hardware and software platform for physical AI development.
1+ YOEExperience debugging hardware/ROS2/software boundaries, observability, strong communication, and ability to root-cause complex system failures; bachelor’s or master’s in CS/EE/robotics or related.
ROS2, CAN, CI/CD, containers, cloud
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7h
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Backend Platform Engineer
San Francisco, California, United States
$180k-$240k/yr OnsiteFull Time
Usul
Usul: AI platform for winning government defense contracts.
2+ YOEMinimum 2 years backend infra experience; familiarity with Python, DevOps, Bash, Linux, Kubernetes, Terraform, AWS/GCP; Typescript is a bonus; strong problem-solving for national security use cases.
Python, DevOps, Bash, Linux, Kubernetes, Terraform, AWS, GCP, Typescript
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5d
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Software Engineer, Wikidata Platform
San Francisco or Arizona or California or Colorado or Connecticut or District of Columbia or Florida or Georgia or Idaho or Illinois or Indiana or Iowa or Maryland or Massachusetts or Michigan or Minnesota or Missouri or New Jersey or New Mexico or New York or North Carolina or Ohio or Oklahoma or Oregon or Pennsylvania or Puerto Rico or Rhode Island or Tennessee or Texas or Utah or Vermont or Virginia or Washington or West Virginia or Wisconsin or Wyoming or Brazil or Canada or Colombia or France or Germany or Ghana or India or Indonesia or Italy or Kenya or Mexico or Morocco or Netherlands or Poland or Singapore or South Africa or Spain or Switzerland or United Kingdom
$95k-$149k/yr RemoteFull Time
Wikimedia Foundation
Wikimedia Foundation: Operates Wikipedia and provides global free knowledge infrastructure.
2+ YOE2+ years backend/platform engineering on distributed systems, proficiency in Java or C++, experience with production-grade services, observability, and data processing technologies.
Java, C++, Kafka, Flink, Docker, Kubernetes, RDF, SPARQL
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20h
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IT Spec (ENTARCH) "Platform/site Reliability Engineer", GS-2210-14 FPL GS-14 (DH)
San Francisco or Denver or Washington or Atlanta or Chicago or Salt Lake City or Seattle
$128k-$197k/yr HybridFull Time
Federal Student Aid
Federal Student Aid: Administers federal student loans and financial aid programs.
1+ YOEDesign and implement scalable cloud platforms, IaC, CI/CD, containers, observability, SRE practices; lead platform engineering and security; must be U.S. citizen and pass background/fingerprint check.
Infrastructure as Code (IaC), CI/CD, containers
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6d
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Software Engineer, AI Platform
San Francisco or New York City
$180k-$201k/yr HybridFull Time
Notion
Notion: Provides a unified workspace for notes, documents, and project management.
Experience building and operating AI/ML platform systems, observability, reliability, model integrations, and collaborating with product teams to ship production-ready AI features.
Apache Spark, Ray, Typscript, node.js
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2w
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HPC Platform Engineer, Software, Center for Quantum Computing
San Francisco, California, United States
OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
2+ YOEExperience automating and supporting large-scale infrastructure, programming in at least one modern language, Linux/Unix, CI/CD and infrastructure-as-code, and 2+ years designing or architecting systems.
Python, Ruby, Golang, Java, C++, C#, Rust, Linux, MPI, Docker, Kubernetes, AWS CDK, CloudFormation, EC2, S3, EBS, SQS, Lambda, VPC, DNS, DHCP, TCP/IP, HTTP, Palace
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2mo
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Junior Product Manager
Foster City, California, United States
$60k-$65k/yr OnsiteFull Time
Joyous
Joyous: At-home low-dose ketamine therapy for anxiety and depression treatment.
0+ YOE0–1 years of experience in product, engineering, or analytics; bachelor's degree in a STEM field; interest in AI and low-code/no-code platforms.
Low-code, No-code, AI, Data analysis tools
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2w
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Software Engineer, Growth Data Platform
San Francisco or United States
$170k-$250k/yr HybridFull Time
Omni
Omni: Business intelligence platform for data analysis and visualization.
2+ YOE2+ years building data platforms or backend systems; experience with Snowflake, dbt, Dagster, AWS, Python, and SQL; strong data modeling, debugging, and system ownership skills.
Snowflake, dbt, Dagster, AWS, AWS Batch, AWS Lambda, Fivetran, Python, SQL, Terraform, GitHub Actions, Soda, Omni, Databricks, BigQuery, Spark, Airflow
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4d
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Software Engineer, Ads Platform
San Mateo, California, United States
$153k-$197k/yr HybridFull Time
Roblox
RobloxNYSE: RBLX: Platform for creating and playing user-generated 3D digital experiences.
1+ YOE1-3 years software engineering experience, Bachelor's degree or equivalent, strong programming in Go/C#/Java/Python/C++, CS fundamentals, debugging and system design skills.
Go, C#, Java, Python, C++
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6d
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Software Engineer, Android Platform, Google Beam
Mountain View or San Francisco or Seattle
$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 Android/platform experience, OS and networking knowledge, proficiency in Java/C++/Kotlin, strong data structures and algorithms skills.
Android, Java, C++, Kotlin
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1mo
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Software Engineer - Data Movement Platform
San Francisco or United States
$164k-$230k/yr RemoteFull Time
Reddit
RedditNYSE: RDDT: Social platform for community-driven discussion and content sharing.
2+ YOE2+ years production software engineering experience; proficiency in Python/Scala/Go/Java; experience with cloud services, Airflow, Kubernetes, CI/CD, Spark, Flink; strong communication and system-design skills.
Python, Scala, Go, Java, Airflow, Kubernetes, CI/CD, Spark, Flink
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1mo
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Forward Deployed Infrastructure Engineer
San Francisco, California, United States
OnsiteFull Time
Sirius Technology: AI-powered retention platform for subscription-based businesses.
1+ YOE1+ year in infrastructure/DevOps/platform engineering or solutions architecture with customer-facing deployment experience; deep experience with AWS, Terraform, container orchestration, and cloud networking (VPC, IAM, DNS); strong operational and stakeholder communication skills.
AWS, Terraform, VPC, IAM, DNS, container orchestration, CRM, AI/ML, LLM
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1mo
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Intern - Design Verification Infrastructure Engineer - Platform
Santa Clara or Austin or Berkeley or Boston
OnsiteFull Time, Internship
SiFive
SiFive: Designs and licenses high-performance RISC-V processor intellectual property.
Software engineer with experience in at least one compiled language and one scripting language; knowledge of modern software practices; production deployments.
Scala, Python, Chisel, CIRCT, MLIR
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2w
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Production Engineer (Contract)
San Francisco or South San Francisco
$50-$60/hr OnsiteContract
VantageScore
VantageScore: A credit modeling that develops predictive and inclusive consumer credit scoring models to expand access to financial products.
1+ YOEBachelor's degree, 1–2 years software development or production support experience, proficiency in Python, databases, Git/CI-CD, cloud platforms, and strong problem-solving and communication skills.
Python, SAS, PostgreSQL, MySQL, MongoDB, Git, CI/CD, AWS, GCP, Azure, Lambda, EC2, DynamoDB, S3, API Gateway, Terraform, Docker, Kubernetes, GraphQL, RESTful
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1w
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Engineer III
Dublin, California, United States
$134k-$229k/yr HybridFull Time
Ross Stores
Ross StoresNASDAQ: ROST: Discount retail chain selling brand-name apparel and home fashions
8+ YOEBachelor's in CS/IS/Engineering,8+ years software/IT experience in retail planning systems, proven experience with Arthur/Oracle/Blue Yonder/O9/Anaplan,SQL,EDW,APIs,ETL,reporting tools,cloud platforms,AI/LLM automation,and mentoring junior engineers.
Arthur Planning, Forecasting, MFP, Assortment Planning, Allocation, RMS, MDO, Oracle Retail, Blue Yonder, O9 Solutions, Anaplan, SQL, EDW, MicroStrategy, Microsoft Power BI, Snowflake, Azure, AWS, GCP, APIs, ETL, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG)
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