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61 open source jobs at 48 companies in Vallejo, CA

1mo
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Head of Open Source Ecosystem
San Francisco or Ontario or London or Berlin or New York City or Austin or Seattle or Singapore
RemoteFull Time
Sentient Foundation
Sentient Foundation: Steward of an open, decentralized artificial general intelligence ecosystem.
4+ YOE4+ years in developer relations or community/ecosystem roles, 4+ years building open-source software, hands-on technical ability (Python/TypeScript), community leadership, public portfolio of developer content, and experience evaluating OSS projects for grants.
ROMA, OML, Open Deep Search, EvoSkills, Arena, GitHub, Discord, X, Python, TypeScript, SDK, API
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2d
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Open Source Research Software Engineer: Computational Infrastructure (0652) Job #87957 - Berkeley Institute for Data Science (BIDS)
Berkeley, California, United States
$102k-$190k/yr OnsiteFull Time
University of California, Berkeley
University of California, Berkeley: Public research university offering undergraduate and graduate education.
Advanced Python and software engineering skills, HPC and workflow system experience, containerization and CI knowledge, open source community participation, strong communication, and bachelor's degree or equivalent.
Python, SLURM, Docker, Apptainer, Singularity, Kubernetes, Snakemake, CWL, Dask, Nextflow, git, GitHub Actions, JupyterHub, Scientific Python, R, Project Jupyter
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1mo
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Software Engineer, Open Source
San Francisco, California, United States
HybridFull Time
CrewAI
CrewAI: Platform for orchestrating collaborative multi-agent AI systems.
Strong Python engineering background for library/framework work, API and developer-experience focus, open-source contribution experience, familiarity with modern Python toolchain (uv, pytest, pre-commit), working knowledge of LLMs and agent concepts.
Python, uv, pytest, pre-commit, GitHub Discussions, Discord
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2w
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Security Software Engineer, Open Source Frameworks
San Francisco or New York City or London or Berlin
$208k-$312k/yr HybridFull Time
Vercel
Vercel: Frontend cloud platform for building and hosting web applications.
4+ YOE4+ years security engineering with hands-on open source contributions; deep JavaScript/TypeScript and Node framework knowledge; vulnerability research, coordinated disclosure, and CVE experience; strong communication.
Turborepo, Nuxt, Svelte, SvelteKit, SWR, Workflow, Nitro, JavaScript, TypeScript, Node, Sigstore, SLSA
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3w
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Senior Database Engineer, Aurora and Open Source
Redmond or East Palo Alto
$146k-$197k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
5+ YOE5+ years relational database experience, system architecture and troubleshooting skills, operations of highly available systems, knowledge of core AWS services, and experience with modern programming languages.
Aurora, Redshift, Oracle, MySQL, MS SQL, EC2, ELB, RDS, VPC, Route53, S3, Ruby, Java, Python, C#
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1d
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Open Source Research Software Engineer: Computational Infrastructure (0652) Job #87957 - Berkeley Institute for Data Science (BIDS)
Berkeley, California, United States
$102k-$190k/yr OnsiteFull Time
University of California, Davis
University of California, Davis: Public research university and academic medical center.
Advanced Python and software engineering skills; HPC, containerization, workflow tools, git/GitHub Actions, open source community experience; ability to collaborate with interdisciplinary researchers.
Python, SLURM, Docker, Apptainer, Singularity, Kubernetes, Snakemake, CWL, Dask, Nextflow, git, GitHub Actions, JupyterHub, Jupyter, Scientific Python, R
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2mo
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Senior Director, Supply Chain--Distribution & Logistics (OPEN TO ALL U.S. LOCATIONS)
San Francisco, California, United States
$175k-$250k/yr RemoteAll Commitments Available
Alvarez & Marsal
Alvarez & Marsal: Provides management consulting, restructuring, and business advisory services.
10+ YOE10-15+ years in consulting/industry with expertise in supply chain, distribution, and logistics; experience leading large engagements and 3PL sourcing; travel flexibility.
Excel, PowerPoint, Llamasoft
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2mo
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Staff Engineer - PKI
Bethesda or Palo Alto or Seattle
$115k-$230k/yr HybridFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
6+ YOEPKI, certificate management, software engineering, cloud platforms, security, CI/CD, Open-source tools.
PKI, Certificate Management, ADCS, Certificate Authority Governance, Docker, Kubernetes, Go, Python, Java, Rust, OpenShift, Azure, AWS, GCP, Terraform, GIT, Jenkins, CircleCI, SonarQube, Grafana, Prometheus
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2mo
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Product Manager - OSS
New York City or London or San Francisco
OnsiteFull Time
Reflection AI
Reflection AI: Developing open-source frontier artificial intelligence models and coding agents.
PM with OSS/AI product experience; able to coordinate with researchers, define metrics, and drive open-source ecosystem.
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2mo
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Senior/Staff ML Engineer, Model Integration
San Francisco, California, United States
OnsiteFull Time
ComfyUI
ComfyUI: Modular visual AI platform for building and automating workflows.
Senior-level ML engineer with experience porting open-source diffusion/LLM models into production and integrating them in ComfyUI.
ComfyUI, Open-source models
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2mo
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AI Platform Engineer
Lincoln or San Francisco
$125k-$165k/yr RemoteFull Time
TELCOR
TELCOR: Provides healthcare software for laboratory and point-of-care operations.
2+ YOE2+ years experience with TypeScript and ReactJS; experience with LLMs; Redis and Postgres; personal projects; open source contributions preferred.
TypeScript, ReactJS, LLMs, Redis, Postgres
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2mo
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Member of Technical Staff - Agent Engineering
San Francisco, California, United States
$200k-$300k/yr OnsiteFull Time
Sail Research
Sail Research: Infrastructure platform for long-horizon agentic AI workloads.
Experience building AI agents and familiarity with open-source models; strong technical expertise in agent design, evaluation, and prompt optimization.
Deepseek, Qwen, Llama, Claude Code, DSPy
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1w
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Platform Technologies Language Design Intern
Santa Clara or Berkeley
$32-$39/hr OnsiteFull Time
SiFive
SiFive: Designs and licenses high-performance RISC-V processor intellectual property.
Programming experience (object-oriented or functional), willingness to learn and teach, exposure to hardware design a plus; ability to communicate and contribute to open-source projects.
Chisel, CIRCT, Scala
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4w
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Member of Technical Staff
San Francisco or United States or London
$200k-$300k/yr RemoteFull Time
OpenClaw Foundation
OpenClaw Foundation: Non-profit steward of an open-source AI agent ecosystem.
5+ YOE5+ years professional software engineering experience, strong distributed-systems and backend skills, Git proficiency, excellent technical communication, and passion for open source.
Git, SDKs, APIs
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4w
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Senior Software Engineer - SDK
San Francisco or New York City or Vancouver or Amsterdam or London or Paris or Singapore or Tokyo
$165k-$276k/yr OnsiteFull Time
Amplitude
AmplitudeNASDAQ: AMPL: Digital analytics platform for understanding and optimizing customer behavior.
Experience building SDKs/APIs or developer platforms, polyglot programming experience, AI-augmented development or tooling, open-source maintainership, Bachelor's in CS or related.
TypeScript, JavaScript, Python, Go, Java, Swift, Rust
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2mo
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Developer Relations Engineer
San Francisco or New York City
OnsiteFull Time
Ode
Ode: Enterprise AI services firm embedding engineers for AI implementation.
Strong software engineering background, exceptional technical writing, community building, open source contributions, and ability to communicate with senior engineers about AI systems.
Claude
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1w
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Staff Engineer
San Francisco, California, United States
$240k-$270k/yr OnsiteFull Time
LiteLLM
LiteLLM: Open-source AI gateway for standardizing LLM API access.
Experience building test, CI, or release infrastructure for large integration surfaces; strong debugging and root-cause analysis; startup experience and open-source contributions preferred.
Python, GitHub
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1mo
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Senior AI Engineer
San Francisco, California, United States
$250k-$300k/yr HybridFull Time
You.com
You.com: AI-powered search engine and enterprise productivity platform.
Hands-on AI engineer experienced with modern AI/agent stacks, systems design, public open-source work, developer outreach, and strong technical and executive communication.
GitHub, E-Verify, You.com APIs, LLM
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10h
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Forward Deployed Engineer (Inference & Post-Training) - Mandarin Speaking
Singapore or San Francisco
HybridFull Time
Together AI
Together AI: Cloud platform for training and deploying artificial intelligence models.
5+ YOE5+ years experience with inference systems, open-source LLM deployment, and post-training pipelines; expert with inference engines; strong Python skills; Mandarin and English proficiency.
vLLM, TensorRT-LLM, SGLang, Python, LoRA, SFT, DPO, RLHF, GRPO, FlashAttention, Hyena, FlexGen, RedPajama
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1w
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Senior Software Engineer I - AI Inference Data Plane
San Francisco, California, United States
$139k-$174k/yr RemoteFull Time
DigitalOcean
DigitalOceanNew York Stock Exchange: DOCN: Simplifies cloud infrastructure for developers, startups, and SMBs.
Expertise in distributed systems and AI inference; hands-on with GoLang or Python, gRPC, inference frameworks (vLLM,llm-d), cloud operations, and open-source contributions; mentorship experience.
GoLang, Python, gRPC, llm-d, NVIDIA Dynamo, Ray Serve, KServe, vLLM, SGLang, TensorRT, NIXL
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