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57 internal tools engineer jobs at 50 companies in Fairfield, CA

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Senior Software Engineer, Internal Tools
San Francisco, California, United States
$100k-$200k/yr OnsiteFull Time
ConductorOne
ConductorOne: A software building an AI-native identity security platform that protects human, non-human, and AI identities.
5+ YOE5+ years software engineering, full-stack development, SQL and data pipeline experience, cloud deployment, API/SaaS integrations, and demonstrable hands-on AI/LLM experience.
Retool, SQL, LLMs
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2mo
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Software Engineer, Internal Tools
San Francisco, California, United States
$120k-$160k/yr OnsiteFull Time
Metriport
Metriport: Provides an open-source API for healthcare data interoperability.
3+ YOE3+ years in software engineering, automation, or internal tools; TypeScript and React proficiency; integration experience; security mindset; self-directed; willing to relocate to San Francisco Bay Area.
TypeScript, React, AWS, REST, OAuth, mTLS, Websockets, Slack, GitHub Actions, PostHog, GSuite, Zapier, n8n, Make
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Staff Software Engineer, Internal Tools
New York City or San Francisco or Los Angeles
$227k-$325k/yr HybridFull Time
Tubi
TubiNASDAQ: FOXA: Free ad-supported streaming service for movies and television.
8+ YOE8+ years software engineering experience; deep distributed systems expertise; strong full‑stack skills with Node.js/TypeScript, React/TypeScript, PostgreSQL/Drizzle ORM, and Python; experience integrating LLMs/AI into production systems.
Node.js, TypeScript, Express, React, PostgreSQL, Drizzle ORM, Python, OpenAI, Google Gemini, Claude Code, Codex, Cursor, MCP, LLM
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Staff Software Engineer, Internal Tools
Toronto or San Francisco
$165k-$235k/yr HybridFull Time
Tubi
TubiNASDAQ: FOXA: Free ad-supported video streaming service for movies and shows.
8+ YOE8+ years software engineering experience; deep distributed-systems and full-stack skills; Node.js/TypeScript, React/TypeScript, PostgreSQL (Drizzle ORM), Python; experience shipping production systems and working with OpenAI/Google Gemini APIs.
Node.js, TypeScript, Express, React, PostgreSQL, Drizzle ORM, Python, OpenAI, Google Gemini, Claude Code, Codex, Cursor, MCP, LLM
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Senior Software Development Engineer, Developer Tools
Belgrade or The Hague or Taipei or Burbank or Walnut Creek
$132k-$194k/yr HybridFull Time, Contract
Network Optix
Network Optix: Software platform for building and managing intelligent video solutions.
Senior-level software engineer focused on CI/CD automation, building internal tools and improving build pipelines.
Python, Git, Bash, PowerShell, GitLab, Jira, Artifactory, CMake, Ninja, Conan, Jenkins
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Software Engineer, Internal Applications - Enterprise
San Francisco, California, United States
$293k-$342k/yr RemoteFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
Experienced in building production frontend and backend systems, designing interfaces for operational/internal tools, strong backend fundamentals (APIs, data modeling, integrations), security-conscious design, and cross-functional collaboration.
IAM, ITSM, RBAC, Zero Trust, APIs, SOC 2, ISO 27001, FedRAMP, NIST
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Quality Engineer
Fremont, California, United States
$100k-$120k/yr OnsiteFull Time
Pivotal Systems
Pivotal Systems: Provides gas flow control technology for semiconductor manufacturing.
2+ YOEBachelor's in engineering, 2+ years quality engineering experience, proficiency with quality methodologies (8D, FMEA, SPC), reliability testing, supplier inspections, internal audits (ISO 9001), and statistical tools (Minitab, JMP).
8D, FMEA, SPC, Root Cause Analysis, Fishbone Diagram, Minitab, JMP, Calipers, Micrometers
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Growth Engineer, Support Engineering
San Francisco or North America or South America
$205k-$250k/yr HybridFull Time
Firecrawl
Firecrawl: Converts websites into clean structured data for AI.
4+ YOE4+ years full-stack engineering experience building internal tools, automations, or developer-facing systems; experience with LLMs a plus; must be authorized to work in the US or eligible remote regions.
LLMs, API, GitHub
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Staff Design Engineer, Insights
Minnesota or San Francisco or San Jose
$159k-$302k/yr RemoteFull Time
Adobe
AdobeNASDAQ: ADBE: Provides software for digital media creation and marketing analytics
10+ YOE10+ years at the intersection of design and engineering; hands-on experience building and shipping LLM-powered apps, internal tools, and high-fidelity prototypes; strong craft, collaboration, and product judgment.
LLM, Vega, D3, Adobe Acrobat Studio, Adobe Express, Adobe Firefly, Creative Cloud, Adobe Experience Platform, Adobe Experience Manager, GenStudio
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2mo
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Manager, Software Engineering (Tools & Frameworks) - Developer Connections
Los Angeles or Mercer Island or Redwood City or San Francisco
$207k-$290k/yr HybridFull Time
Riot Games
Riot Games: Developing and publishing competitive multiplayer video games.
7+ YOE1+ Mgmt7+ years software engineering, 1+ year people management, proficient in Go or Java, experience building shared libraries/platforms, product mindset for internal tools, familiarity with AI/LLM integrations and containerization.
Go, Java, Kubernetes, CI/CD, AI/LLM integrations, Containerization, Slack/Discord platforms
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Staff Engineer, Agentic Productivity and Infrastructure - San Francisco
San Francisco or Seattle or Argentina or United States
HybridFull Time
HomeVision
HomeVision: AI-powered automation for mortgage document and appraisal reviews.
Senior engineer with experience building developer tooling, CI/CD, internal platforms, and agent/LLM-driven automation; proficiency with Go/Python/TypeScript and IaC (Terraform/Pulumi) a plus.
Go, Python, TypeScript, LLMs, Terraform, Pulumi, CI/CD, GitHub
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Software engineer, developer tooling
San Francisco, California, United States
$174k-$230k/yr HybridFull Time
Watershed
Watershed: Software platform for corporate carbon accounting and climate reporting.
3+ YOE3+ years software engineering experience; building internal tools or developer platforms; comfortable across stack (CLI/tools, services, CI); product sense for internal products; familiar with JavaScript/TypeScript, GCP, GitHub Actions, Playwright, Temporal, Terraform.
JavaScript, TypeScript, GCP, GitHub Actions, Playwright, Temporal, Terraform
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3w
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Senior Electrical Design Engineer 6
Dallas or Houston or Denver or Chicago or Los Angeles or Irvine or Concord or Carlsbad or Phoenix
$121k-$212k/yr HybridFull Time
CDM Smith
CDM Smith: Engineering and construction firm for global infrastructure projects.
10+ YOEPE license and bachelor's in electrical engineering (or equivalent), 10+ years electrical design experience, proficiency with SKM Power Tools or ETAP, Microsoft Word/Excel, US citizenship for federal work; domestic/international travel possible.
SKM Power Tools, ETAP, Microsoft Word, Microsoft Excel
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2mo
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Intern - Controls Engineer
San Francisco, California, United States
HybridInternship
Human Computer Lab
Human Computer Lab: A robotics startup building expressive, responsive robots.
0+ YOEPursuing a Bachelor’s/Master’s in Electrical/Mechatronics/Software Engineering; hands-on control systems tuning on robotics; proficient in C++/Python; ROS/ROS2 experience; CAD tools; hardware debugging.
C++, Python, ROS/ROS2, SolidWorks, Onshape, Gazebo, MuJoCo, Isaac Sim, URDF
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Test Engineer Intern, ESS - Winter 2027
Burlingame, California, United States
$30/hr OnsiteInternship
Peak Energy
Peak Energy: Developing sodium-ion battery systems for utility-scale energy storage.
Pursuing a Bachelor's in engineering, hands-on interest in test engineering for battery/power electronics, proficiency with data analysis tools, electromechanical fundamentals, strong problem-solving and communication skills.
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2w
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Senior Database Engineer
San Francisco, California, United States
$203k-$254k/yr HybridFull Time
Crunchyroll
Crunchyroll: Operates a global streaming platform for anime and manga.
8+ YOEBachelor's degree, 8+ years in database operations or data platforms, deep experience with AWS RDS/Aurora/DynamoDB, monitoring tools (Datadog, CloudWatch, DevOps Guru, DB Performance Insights), Python or Java, CI/CD and IaC familiarity, strong DB internals and performance skills.
AWS, Amazon RDS, Aurora, DynamoDB, Datadog, CloudWatch, DevOps Guru, DB Performance Insights, Python, Java
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Software Engineer, Build Infrastructure and Test
San Francisco, California, United States
$200k-$240k/yr OnsiteFull Time
Sauron Systems
Sauron Systems: Autonomous robotic platforms for residential security and threat deterrence.
3+ YOE3-5+ years in Embedded Development, DevOps, or SRE; embedded Linux, cross-compilation; OTA updates; large-scale edge fleets; CI/CD; internal developer tools.
Embedded Linux, Cross-compilation, OTA, CI/CD, Prometheus, Grafana, Sentry, Linux, CLI
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Product Support Engineer 3
Oregon or Arizona or Fremont
OnsiteFull Time
Lam Research
Lam ResearchNASDAQ: LRCX: Designs and manufactures wafer fabrication equipment for the semiconductor industry.
5+ YOEExperience with etch tools (e.g., 2300e, Sense.i), ability to travel up to 30% domestic/international, read electrical/mechanical schematics, use data analysis and office software, and provide escalation support.
Control Works, IOC, SIOC, EIOC, Tool Platform SW Package, data analysis tools, word processing, spreadsheet, presentation software
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Senior Software Engineer - AI Tooling
San Francisco or New York City
$191k-$263k/yr HybridFull Time
Plaid
Plaid: Provides financial data connectivity and payment infrastructure via APIs.
5+ YOE5+ years professional software engineering experience; proven production systems experience; internal tools/platform building; strong product judgment; hands-on experience with AI development tools or agents.
Retool, Scaffold
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2mo
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IT Engineer
San Francisco, California, United States
HybridFull Time
Retool
Retool: Software platform for building custom internal business applications.
5+ YOE5+ years IT engineering/internal tools; automation focus; IAM (Okta, RBAC); Python/JavaScript; SaaS consolidation; cross-functional collaboration.
Python, JavaScript, Okta, RBAC, APIs, SaaS, Automation, Okta, SSO, SCIM
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