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272 custom software engineer jobs at 191 companies in Fairfield, CA

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
1w
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Custom Software Engineer 6321038
Walnut Creek or Mountain View or San Francisco
$28-$38/hr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
1+ YOEMinimum 1 year experience, including 1 year Python development; HS diploma/GED required; Python 2.x experience and bachelor's degree in CS preferred.
Python, Python 2.x
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2mo
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Software Engineer
San Francisco, California, United States
$150k-$200k/yr HybridFull Time
Conduit
Conduit: Modern yard and dock management software for warehouses
5+ YOE5+ years shipping production software; built customer-facing software end-to-end; thrived in ambiguous environments.
Python, Django, Svelte, Postgres
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1mo
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Senior Software Engineer, Auto
Columbus or Austin or San Francisco or New York City or United States or Canada
$167k-$231k/yr RemoteFull Time
Upstart
UpstartNasdaq: UPST: AI-powered lending marketplace for consumer and automotive loans.
4+ YOE4+ years software engineering experience; experience designing, building, testing, and deploying production software; experience with customer-facing product features and cross-functional collaboration; bachelor's degree in CS/Engineering/Math or equivalent experience.
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4d
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Software Engineer (Frontend)
San Francisco, California, United States
OnsiteFull Time
Petra Security
Petra Security: AI-powered identity threat detection for Microsoft 365 environments.
Frontend engineering experience building production React/TypeScript UIs; familiarity with Node and Python; strong product design sensibility, prototyping skills, and experience shipping customer-facing software.
React, TypeScript, Node, Python, Figma
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2mo
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Software Engineer, Applied AI
San Francisco, California, United States
$130k-$500k/yr OnsiteFull Time
Mercor
Mercor: Connecting expert human intelligence with frontier AI model development.
Strong software engineering in Python/Go/Rust; cloud deployments (AWS/GCP/Azure); ability to work with customers; autonomous in high-stakes environments.
Python, Go, Rust, AWS, GCP, Azure
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5d
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Staff Software Engineer, Product
San Francisco or New York City
$250k-$295k/yr HybridFull Time
Unify
Unify: AI-powered platform for automating B2B sales outbound workflows.
8+ YOE8+ years software engineering experience, track record shipping at scale, infrastructure and mentorship experience, customer-focused, familiar with modern AI and backend stacks.
TypeScript, Prisma, Temporal, PostgreSQL, Kubernetes, Pulsar, ClickHouse, LLMs
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3mo
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Software Engineer - AI Agents & Platform
San Francisco, California, United States
$135k-$280k/yr OnsiteFull Time
Assembled
Assembled: A workforce management platform for scaling customer support operations.
5+ YOE5+ years software engineering; customer-focused; startup experience; experience with LLMs; collaborative; eager to learn.
Go, LLMs, Vector Search, Document Embeddings
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3mo
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Deployed Software Engineer
San Francisco, California, United States
$200k-$325k/yr OnsiteFull Time
Serval
Serval: AI platform for automating IT and enterprise service workflows.
2+ YOE2+ years software engineering, customer-facing experience; strong coding and system design; ability to work autonomously and communicate with both technical and business stakeholders.
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1w
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Software Engineer Sys 2
Fremont, California, United States
$86k-$183k/yr HybridFull Time
Lam Research
Lam ResearchNASDAQ: LRCX: Manufacturing equipment used to fabricate advanced semiconductor microchips.
3+ YOEBachelor's in engineering with 3+ years experience (or Master's/equivalent); strong software troubleshooting, debugging, log analysis, customer-facing deployments, ability to read code, and strong communication skills.
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1w
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Software Engineer Sys 2
Fremont, California, United States
$86k-$183k/yr HybridFull Time
Lam Research
Lam ResearchNASDAQ: LRCX: Designs and manufactures wafer fabrication equipment for the semiconductor industry.
3+ YOEBachelor's in computer/electrical/mechanical engineering (or Master's/equivalent), 3+ years experience, strong software troubleshooting, debugging, root-cause analysis, code review ability, customer-facing deployment experience, and strong communication skills.
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1mo
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Senior Software Engineer, Inspections
San Francisco or New York City
$194k-$239k/yr HybridFull Time
Hover
Hover: Creates 3D property models and measurements from smartphone photos.
5+ YOE5+ years software engineering experience; mobile app development with React Native/Swift/Kotlin; full-stack expertise (backend Ruby on Rails or frontend React); ownership of customer-facing features; strong product instincts and communication.
React Native, Swift, Kotlin, Ruby on Rails, React, GraphQL
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1mo
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Software Engineer, Security
San Francisco, California, United States
OnsiteFull Time
Lassie: AI-powered automation platform for healthcare practice administration and billing.
Design and build security controls, audit logs, data protection, monitoring, and incident readiness; threat-model new workflows and partner with engineering to protect customer data.
Python, Django, Pydantic AI, Postgres, Redis, TypeScript, React, Tailwind, Google Cloud Platform, Vercel, Linear, Slack, Notion
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1w
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Senior Software Engineer, Customer Growth
San Francisco, California, United States
$179k-$273k/yr RemoteFull Time
Thumbtack
Thumbtack: Online marketplace connecting homeowners with local service professionals.
5+ YOE5+ years software engineering experience, fluent in at least one major language; experience with Go, Python, Php, relational databases (Postgres/MySQL), AI coding-agents, and production platform support.
Go, Python, Php, Swift, Kotlin, Java, Postgres, MySQL
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1w
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Senior Software Engineer, Fleet & Planning
Atlanta or Boston or Chicago or Denver or Los Angeles or New York City or San Francisco or Austin or United States
$160k-$190k/yr RemoteFull Time
Flock Safety
Flock Safety: Sells AI-powered cameras and software for public safety surveillance.
Senior software engineer experienced with Typescript/Node, modern web frameworks (React), SQL, Docker, Helm, Kubernetes, and AWS; builds geospatial routing, automated permitting, and customer dashboards; CJIS eligibility required.
Typescript, Node, React, Vue, Angular, SQL, Docker, Helm, Kubernetes, AWS, S3, API Gateway, SQS, Claude, Copilot, Codex
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1mo
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Software Engineer, North for Finance
Toronto or San Francisco or New York City or London or Paris or Montreal or Canada or United States or Europe
RemoteFull Time
Cohere
Cohere: Provides enterprise-grade large language models and AI software platforms.
Experienced full‑stack product engineer who has built, shipped, and operated production software; strong product judgment, problem solving, and proficiency working with AI-enabled systems; customer-facing finance domain experience is a plus.
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2mo
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Software Engineer, Full Stack
San Mateo, California, United States
$110k-$180k/yr HybridFull Time
Skydio
Skydio: Develops autonomous AI drones for defense and industrial inspection.
1+ YOE1–3+ years building customer-facing software; experience with backend services, REST/GraphQL; cloud and distributed systems; React and TypeScript.
React, TypeScript, REST, GraphQL, AWS, Kubernetes, Temporal
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3mo
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Software Engineer
San Francisco, California, United States
$180k-$250k/yr HybridFull Time
Marble
Marble: AI-powered tax assistant platform for accounting professionals.
Experience building and scaling user-facing web apps; frontend and backend frameworks; strong product intuition; customer-focused
React, Remix, Typescript, Node.js, PostgreSQL, Weaviate, AWS, Kubernetes, Terraform, Airflow
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1mo
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Software Engineer, Forward Deployed (All Levels)
San Francisco, California, United States
$160k-$250k/yr OnsiteFull Time
Zip
Zip: AI-powered intake-to-procure platform for enterprise spend management
Proven software engineering experience shipping production systems; strong backend Python and frontend React/TypeScript skills; product judgment, customer communication, and high ownership.
Python, React, TypeScript
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5d
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Staff Software Engineer (AI Agents)
New York City or San Francisco
$240k-$300k/yr OnsiteFull Time
Traba
Traba: AI-driven platform connecting industrial businesses with vetted workers.
7+ YOE7+ years software engineering, 2+ years production LLM/agent systems, strong Python or TypeScript/Node.js, PostgreSQL, modern messaging (Kafka or RabbitMQ), orchestration, retrieval, evals, observability, on-call experience, customer-facing deployment experience.
Python, TypeScript, Node.js, PostgreSQL, Kafka, RabbitMQ
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6d
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Senior Software Engineer, Payments
San Francisco, California, United States
OnsiteFull Time
Wonderschool
Wonderschool: Software platform for child care providers and parents.
Senior payments engineer with strong payments and integrations experience, attention to detail, regulatory familiarity, customer-facing experience, and ability to consolidate legacy systems.
Stripe, SAP
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