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60 junior platform engineer jobs at 40 companies in Petaluma, CA

1d
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Platform Engineer
San Francisco or Singapore
$150k-$250k/yr HybridFull Time, Contract
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
2+ YOE2–4 years owning production cloud infrastructure; deep AWS and container experience; Terraform, Kubernetes/EKS, Docker, CI/CD, observability, and strong backend engineering judgment.
AWS, Terraform, Kubernetes, EKS, Helm, Docker, EC2, CodeBuild, ECR, S3, IAM, CI/CD
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1mo
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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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1w
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Platform Engineer, Intern
Berkeley, California, United States
$150/hr OnsiteInternship, Temporary
METR
METR: Develops scientific methods to assess frontier AI capabilities and risks.
Familiarity with UNIX/Linux, low-level programming (C/C++/Rust), web development (React/TypeScript), LLM concepts, and ability to learn infrastructure and cloud tooling quickly.
UNIX, Linux, C, C++, Rust, React, TypeScript, AWS, IAM, ECS, Lambda, PostgreSQL, Terraform, Pulumi, CDK, Kubernetes, Inspect
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2w
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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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2w
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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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2w
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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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4d
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Intern - Design Verification Infrastructure Engineer - Platform
Santa Clara or Austin or Berkeley or Boston
OnsiteFull Time
SiFive
SiFive: Designs and licenses high-performance RISC-V processor intellectual property.
Software engineering experience with a compiled and a scripting language, modern engineering practices, production deployments; familiarity with Chisel/CIRCT/MLIR and EDA flows preferred.
Chisel, CIRCT, MLIR, Scala, Python
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1w
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People Platform Lead
San Francisco, California, United States
$180k-$225k/yr OnsiteFull Time
Halluminate
Halluminate: Building reinforcement learning environments for training AI agents.
2+ YOE2+ years in operations/talent/platform or marketplace supply roles; systems-and-process orientation; product skills working with engineers; event facilitation; data-driven and detail-oriented.
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3w
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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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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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3w
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Software Engineer, AI Platform
San Francisco, California, United States
$188k-$254k/yr HybridFull Time
Mixpanel
Mixpanel: Provides an event-based analytics platform for tracking user behavior.
2+ YOE2+ years software engineering experience; strong full-stack fundamentals; hands-on LLM and agent integration experience; bachelor's degree or equivalent; strong debugging and communication skills.
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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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Software Engineer, GTM Platform
San Francisco, California, United States
$189k-$330k/yr OnsiteFull Time
Ramp
Ramp: Financial operations platform for corporate cards and spend management.
2+ YOE2+ years software engineering experience preferred; track record of shipping products, strong collaboration and empathy for internal users, ability to build internal tools and AI-powered workflows.
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2w
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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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3w
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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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2mo
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Android Engineer, Terminal OS Platform
Seattle or South San Francisco
$190k-$286k/yr OnsiteFull Time
Stripe
Stripe: Provides global financial infrastructure and payment processing for businesses.
2+ YOE2+ years Android development experience (2–6 years preferred), strong Kotlin skills, experience building Android apps/SDKs, collaboration with cross-functional teams, and attention to developer and user experience.
Kotlin, Android
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1mo
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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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2w
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Software Engineer (Agent Platform) - New Grad - 2026-2027
San Francisco, California, United States
OnsiteFull Time
Netic
Netic: AI platform automating customer outreach and bookings for service businesses.
New graduate software engineer with CS fundamentals, experience or coursework in Python and TypeScript, interest in multi-agent orchestration, and track record of shipping end-to-end projects.
Python, asyncio, FastAPI, TypeScript, Node, React, LLM APIs, eval frameworks, RAG, LangChain, MCP
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