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100 founding software engineer jobs at 60 companies in Berkeley, CA

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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
2mo
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Founding Software Engineer
San Francisco, California, United States
$150k-$250k/yr OnsiteFull Time
Tamarind Bio
Tamarind Bio: AI-powered platform for computational biology and drug discovery.
Founding software engineer with full-stack expertise; strong AWS, Docker, CUDA, TensorFlow/PyTorch; React; onsite in SF; equity.
Python, React, AWS, Docker, CUDA, Conda, TensorFlow, PyTorch, Slurm, Bash, APIs, Web apps
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3mo
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Founding Engineer
Palo Alto, California, United States
OnsiteFull Time
Miravoice
Miravoice: AI-powered voice agents for automated phone data collection.
Generalist founding software engineer with frontend/backend, distributed systems, or AI/ML focus; startup experience; strong learning and collaboration; in-person in Palo Alto.
Frontend, Backend, Distributed Systems, AI/ML, Speech Systems
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3mo
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Founding Engineer
San Francisco, California, United States
OnsiteFull Time
Chasi
Chasi: AI revenue engine for construction equipment dealers.
2+ YOE2+ years production software experience; full-stack TS/React; real-time systems; experience with LLMs; customer-facing; founding-level ownership.
Next.js, TypeScript, PostgreSQL, Redis, Twilio, LiveKit, OpenAI, Anthropic, Deepgram, Vector DBs
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1mo
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Founding Software Engineer - Backend
San Francisco, California, United States
$125k-$300k/yr OnsiteFull Time
Hypercubic
Hypercubic: AI platform for modernizing large-scale legacy enterprise software.
0+ YOEFounding backend engineer with strong engineering and design taste; ownership over architecture and engineering culture. Experience with AI-powered systems and legacy modernization is a plus.
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2mo
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Founding Software Engineer
San Francisco, California, United States
$160k-$300k/yr OnsiteFull Time
Lance
Lance: Autonomous AI agents for hotel operations and guest services.
Proficient in software development; experience with ML/AI; design scalable systems; strong collaboration; startup mindset; BS or higher in CS/Engineering.
Python, JavaScript, Cloud infrastructure, Deployment pipelines, Machine Learning
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2mo
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Founding Engineer
San Francisco, California, United States
$205k-$250k/yr OnsiteFull Time
Kiloforge
Kiloforge: Autonomous factory ideating and building software products.
Generalist engineer with end-to-end product focus, scrappy, able to build widely-used tools, strong product/design sense, thrives in chaos, prior founding experience.
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1mo
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Founding Engineer - Software
San Francisco or United States
$200k-$350k/yr RemoteFull Time
uRun
uRun: Infrastructure cloud for interactive, stateful AI inference.
7+ YOE7+ years backend experience; proficient in TypeScript/Node.js or Python/Go; API design, distributed systems; cloud, containers, performance, and concurrency; real-time/latency-sensitive systems.
TypeScript, Node.js, Python, Go, WebRTC, WebSockets, Kubernetes, Observability, Cloud, Containers
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1mo
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Founding Engineer
San Francisco, California, United States
$175k-$225k/yr OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
2+ YOEComputer Science degree required, 2+ years professional software engineering experience, strong CS fundamentals, startup experience valued, proficiency in Python (typed scientific Python).
Python
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2mo
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Founding Software Engineer
San Francisco, California, United States
$160k-$220k/yr OnsiteFull Time
Kovari
Kovari: Building general-purpose robots for hospitality and physical industries.
Strong software engineering fundamentals; Python and C++ in Linux; hardware familiarity; ROS; cross-stack collaboration; shipping-oriented.
Python, C++, Linux, ROS
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1mo
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Founding Engineer
San Francisco, California, United States
$120k-$160k/yr OnsiteFull Time
Aurorin
Aurorin: Modern AI-native CAD software for mechanical engineers
Strong systems programming/native app background, experience with Swift and C++, GPU programming experience preferred, proactive and high-responsibility engineer.
Swift, C++
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2mo
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Founding Engineer
San Francisco, California, United States
HybridFull Time
Double Blind Bio
Double Blind Bio: Develops AI agents automating administrative clinical trial workflows.
Strong full-stack engineering with deep AI/ML expertise; evals, observability, production LLMs; product-minded; healthcare familiarity; fast-paced, autonomous work.
LangSmith, Braintrust, Weights & Biases, Honeyhive
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1mo
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Founding Engineer
Palo Alto or California
$140k-$200k/yr OnsiteFull Time
TrueMeter
TrueMeter: AI-powered platform for commercial energy savings and bill management.
Experienced full-stack engineer with production experience in TypeScript/React/Next.js, backend APIs and Postgres, desktop/web (Electron or Tauri), LLM features in production, CI/CD, testing, observability, and customer-facing product work.
TypeScript, React, Next.js, Postgres, Electron, Tauri, Claude Code, Codex, CI/CD, GitHub, LLM
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2mo
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Founding Software Engineer
San Francisco, California, United States
OnsiteFull Time
Runbook
Runbook: Building an AI operations platform for the physical economy.
5+ YOE5+ years shipping production software; full-stack experience; track record deliveringAmbiguity-driven projects; strong product instincts; ownership mindset; in-person bias.
TypeScript, Cloud Infrastructure
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2mo
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Founding Software Engineer
San Francisco or United States
$140k-$180k/yr RemoteFull Time
Recourse
Recourse: Building AI-powered claims intelligence software for healthcare arbitration.
2+ YOE2+ years building production software; full-stack exposure; hands-on AI/LLM integration; experience with TypeScript/Node, Python, SQL, and modern frontend frameworks; strong ownership and product judgment; regulated environment experience a plus.
Claude, Claude Code, Cursor, TypeScript, Node, Python, SQL, HL7/FHIR
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3mo
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Founding Engineer
San Francisco, California, United States
$200k/yr OnsiteFull Time
Prox
Prox: Develops AI-powered knowledge engines and multimodal agents for complex physical products.
Experience building AI systems, knowledge graphs, and scalable deployments; strong coding and problem solving; willingness to work onsite in SF.
Graph theory, Knowledge graph, Telephony, Code generation, Multimodal AI
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1mo
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Founding Software Engineer
San Francisco, California, United States
$175k-$195k/yr OnsiteFull Time
The Electric Plant Co.
The Electric Plant Co.: Develops IoT hardware and AI for plant health monitoring.
7+ YOE7+ years building backend, platform, and distributed systems; experience with cloud infrastructure, APIs, observability, and AI-augmented development workflows.
Golang, Postgres, Linux, GCP, React, C, MicroPython, LoRaWAN, MQTT, Claude Code, Codex, Cursor
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1mo
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Founding Software Engineer
San Francisco, California, United States
HybridFull Time
withQ
withQ: AI workforce platform for hospitality operations.
5+ YOE5+ years building and operating production backends; strong TypeScript; production LLMs and agent development; telephony (SIP) and distributed-systems experience; strong system design and product ownership.
TypeScript, NestJS, Drizzle, BullMQ, React 19, TanStack, AWS EKS, Aurora Postgres, Valkey, Istio, Auth0, Cloudflare, Anthropic, OpenAI, Gemini, Azure Foundry, Vertex, Vercel AI SDK, Mastra, Vapi, Deepgram, ElevenLabs, SIP, Opera Cloud, DerbySoft, Hapi, PBX
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1mo
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Founding Engineer
San Francisco, California, United States
$140k-$180k/yr HybridFull Time
Dealops
Dealops: Building revenue infrastructure for modern B2B pricing
4+ YOE4+ years software development experience; full-stack focus; proficiency in React, TypeScript, and SQL/PostgreSQL; track record building scalable products; experience with ML or prompt engineering is a plus.
React, TypeScript, SQL, PostgreSQL, Tailwind, Express
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3mo
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Founding Product Engineer
San Francisco, California, United States
$120k-$180k/yr OnsiteFull Time
Bild AI
Bild AI: AI-powered platform for construction blueprint analysis and cost estimation.
Own features end-to-end, interview customers weekly, ship features quickly; build UI that simplifies complex data; work across the stack (React frontend, Python backend); growth mindset and strong product sense.
React, Python, Cloud infrastructure, APIs, SQL
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2mo
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Founding Platform Engineer
San Francisco, California, United States
$170k-$250k/yr HybridFull Time
Kos
Kos: AI-powered automated financial operations for industrial infrastructure.
2+ YOE2+ years of production systems experience; shipped systems; on-call experience; SOC 2 awareness; strong CS/EE foundations.
Identity and RBAC, ERP integrations, Multi-channel messaging, Observability
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