254 csharp jobs at 118 companies in Petaluma, CA

1mo
Save
Mark Applied
Hide
Principal Engineer - Cloud
Scottsdale or Chicago or San Francisco or New York City
$173k-$242k/yr HybridFull Time
Early Warning Services
Early Warning Services: Operates payment and risk solutions for the financial industry.
15+ YOEBachelor's in CS or related (or equivalent experience), ~15 years cloud/infrastructure experience with 5+ years designing and operating AWS solutions, deep Kubernetes and Terraform expertise, security/compliance experience, background and drug screen required, must be authorized to work in the U.S.
EC2, Lambda, S3, RDS, EKS, IAM, VPC, KMS, Terraform, Kubernetes, Linux, Prometheus, Grafana, ELK Stack, Splunk, AppDynamics, Python, Java, C#, Ruby, Shell
1mo
Save
Mark Applied
Hide
Senior Software Engineer, Back-End (Payments)
United States or Santa Ana or San Francisco or Oakland or Berkeley or New Jersey or Texas or Florida or Shanghai or Hong Kong or Japan or Canada or Mexico or Germany or France
$141k-$229k/yr HybridFull Time
Collectors
Collectors: Providing authentication and grading services for high-value collectibles.
6+ YOE6+ years engineering experience, deep C#/.NET backend skills, frontend experience with React/Svelte/TypeScript, payments/gateway and distributed-systems experience, observability and security mindset.
Stripe, PayPal, C#, .NET, React, Svelte, TypeScript, PostgreSQL, DynamoDB, Kafka, Kubernetes, AWS, Datadog
1mo
Save
Mark Applied
Hide
Senior Software Engineer - NPC Behavior
San Mateo, California, United States
$197k-$243k/yr HybridFull Time
Roblox
RobloxNYSE: RBLX: Platform for creating and playing user-generated 3D digital experiences.
5+ YOE5+ years building scalable distributed backend systems and microservices; experience with game engines; proficiency in one or more languages such as C#, Lua, C++, Go, or Python; familiarity with ML techniques (LLM, reinforcement/imitation learning) and strong cross‑functional communication.
C#, Lua, C++, Go, Python, LLM, Imitation Learning, Reinforcement Learning, Behavior Trees, Statement Machines, microservices, game engines
2mo
Save
Mark Applied
Hide
EY-Parthenon - Strategy & Execution - Deal Technology - Health - Enterprise Architect - Director (New York, NY, US, 10001-8604)
New York or Atlanta or Boston or Chicago or Dallas or Hoboken or Los Angeles or McLean or New York or San Francisco
$205k-$235k/yr HybridFull Time
EY
EY: Global firm providing audit, tax, and professional consulting services.
5+ YOEDirector-level IT strategy and healthcare deal technology expert with enterprise architecture, cost optimization, digital transformation, and AI-enabled growth experience.
Epic, Cerner, Cloverleaf, Mirth Connect, Boomi, Java, C#, Python, Snowflake, Databricks, Azure Synapse Analytics, Azure Databricks, Fabric, LAN/WLAN, Zero Trust Security, SD-WAN, Azure AD, EntraID, MFA, PAM/IAM
3w
Save
Mark Applied
Hide
Cloud Solution Architect - Cloud & AI Applications
United States or San Francisco or New York City
$86k-$170k/yr HybridFull Time
Microsoft
MicrosoftNASDAQ: MSFT: Develops software, services, devices, and cloud computing solutions.
2+ YOEBachelor's degree or equivalent experience and 2+ years in cloud/infrastructure or related roles; US work authorization required; proficiency with Microsoft Azure AI Foundry, AKS, App Service, APIM, GitHub; customer-facing and technical delivery experience preferred.
Microsoft Azure AI Foundry, AKS, Microsoft App Service, APIM, GitHub, C#, Python, .NET
2w
Save
Mark Applied
Hide
Senior Robotics Systems Engineer
San Francisco, California, United States
$176k-$242k/yr OnsiteFull Time
Atoms
Atoms: Building robotics and software to automate physical world industries.
7+ YOE7+ years software development, strong programming in Python/C++/Java/C#, robotics system-level ownership, knowledge of state estimation/localization/planning/controls, strong diagnostics and field deployment experience.
Python, C++, Java, C#, Linux, Git, CI/CD, CAN
2w
Save
Mark Applied
Hide
Senior Software and AI Engineer
Livingston or New York or Sunnyvale or San Francisco or Bellevue
$182k-$242k/yr OnsiteFull Time
CoreWeave
CoreWeaveNASDAQ: CRWV: Cloud platform providing GPU-accelerated infrastructure for AI workloads.
3+ YOE3+ years professional programming; full‑stack development with React/TypeScript and backend services in Node.js or Go; experience with GenAI/LLM frameworks (LangChain, ChatGPT API, Glean API); cloud, Kubernetes, and CI/CD familiarity.
Workato, LangChain, LangGraph, ChatGPT agentflow, ChatGPT API, OpenAI API, Gemini agent flow, Glean API, React, TypeScript, Node.js, Go, Python, C++, C#, Java, FastAPI, gRPC, Next, Cursor, Claude, Copilot, ChatGPT Codex, Ray, Kafka, Spark, Kubernetes, AWS, Azure, GCP, Workato, Boomi, ERP, HRIS, DCIM, Data Warehouse
2w
Save
Mark Applied
Hide
Software Engineer ||
Santa Clara or San Jose or Mountain View or Fremont or Newark or Fairfield
$124k-$171k/yr OnsiteFull Time
Applied Materials
Applied MaterialsNASDAQ: AMAT: Manufacturers of equipment for semiconductor and display production.
2+ YOEBachelor's degree required, 2+ years related experience, proficiency in C/C++, .Net, C#, and strong skills in algorithms, multi-threading, networking and software troubleshooting.
C/C++, .Net, C#
2w
Save
Mark Applied
Hide
Senior Security Engineer
Boston or Chicago or Los Angeles or New York or San Francisco or Toronto or Vancouver or Vancouver
$145k-$175k/yr RemoteFull Time
Later
Later: Provides software for social media scheduling and influencer marketing.
5+ YOE5+ years security engineering experience; strong application, cloud, and infrastructure security; SOC 2 and compliance experience; vulnerability management, IaC and CI/CD security; strong communication and software engineering skills.
OWASP, NIST, CIS Controls, SOC 2, ISO 27001, AWS Security Hub, Azure Security Center, GCP Security Command Center, SIEM, SOAR, Terraform, CloudFormation, C#, CI/CD
2w
Save
Mark Applied
Hide
Software Engineer II – AI Engineer (w/ skills in Deployment)
San Ramon, California, United States
$85k-$124k/yr RemoteFull Time
Robert Half
Robert HalfNYSE: RHI: Provides specialized staffing and global business consulting services.
4+ YOE4+ years IT experience with 2+ years software engineering and 1+ year GenAI deployment; experience with LLMs, RAG, prompt engineering, CI/CD, containers, cloud platforms, and observability.
Python, Java, C#, JavaScript, SQL, LangChain, Semantic Kernel, AutoGen, CI/CD, Azure, AWS, GCP, LLMOps, MLOps
2w
Save
Mark Applied
Hide
Lead Engineer
San Mateo, California, United States
$207k-$258k/yr HybridFull Time
Xero
XeroASX: XRO: Cloud-based accounting software for small businesses and advisors.
Experienced backend engineer with strong OOP and system-design skills, expertise building distributed high-throughput APIs, on-call/operational maturity, CI/CD-driven releases, and payments/fintech experience preferred.
C#, Java, Go
3mo
Save
Mark Applied
Hide
SoC System Level Test Product Development Engineer
Austin or San Francisco
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
10+ YOEBachelor's degree plus 10+ years of experience; strong background in semiconductor test solutions, SOC architectures, and manufacturing environment; programming skills in Python/Perl and C/C++/C#.
Python, Perl, C#, C, C++, Visual Basic .NET
3mo
Save
Mark Applied
Hide
Senior Software Engineer (Tech Lead), Marketplace Middleware Engineering
New York City or Denver or San Francisco
$209k-$240k/yr HybridFull Time
Forge Global
Forge GlobalNYSE: FRGE: Marketplace for trading private shares and pre-IPO stock.
8+ YOE8+ years software engineering, technical lead experience, API design with C#/.NET, event-driven systems, SQL databases, fintech domain knowledge.
C#, .NET, Kafka, RabbitMQ, Event Sourcing, CQRS, SQL, Relational Databases, Marten, CI/CD
1mo
Save
Mark Applied
Hide
Senior Software Engineer, Autonomous Lab
Boston or Emeryville or West Sacramento
$134k-$190k/yr HybridFull Time
Ginkgo Bioworks
Ginkgo BioworksNYSE: DNA: Designs custom microorganisms and cells for industrial manufacturing.
5+ YOE5+ years software development experience, strong Python proficiency, production software experience, bachelor’s/master’s in CS/EE or equivalent experience, strong communication, and ability to own complex systems.
Python, C#/.NET, TypeScript/React, LangChain, MCP, Catalyst, RACs, RS-232, USB, TCP/IP, OPC-UA, SiLA2, HL8, Terapagos, Stratum v2, PostgreSQL, Kubernetes, GCP, AWS, Azure, CI/CD, Git, Kafka, Temporal, ClickHouse, BigQuery, Snowflake
2w
Save
Mark Applied
Hide
Lead AI Engineer (MLX, Agentic AI, Gen AI platform Services)
San Jose or San Francisco or McLean or Cambridge or New York City
$215k-$246k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOEBachelor's in CS/AI/EE/CE (or Master's) plus 4/2 years experience, 4+ years programming in Python/Go/Scala/Java, experience deploying scalable AI on cloud, LLM/ML systems expertise.
AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, Python, Go, Scala, Java, C++, C#, Golang, AWS, Google Cloud, Azure
1mo
Save
Mark Applied
Hide
Senior Software Engineer, IAM
San Francisco, California, United States
$175k-$220k/yr OnsiteFull Time
Crusoe
Crusoe: Provides energy-efficient cloud infrastructure powered by stranded and renewable energy.
5+ YOE5+ years software development; experience with Go, Rust, Java, C#, or C++; designing scalable distributed systems; familiarity with Docker, Kubernetes, Terraform, CI/CD; strong security knowledge (encryption, authentication, RBAC, TLS/mTLS).
Go, Rust, Java, C#, C++, Docker, Kubernetes, Terraform, CI/CD, RBAC, TLS, mTLS
1mo
Save
Mark Applied
Hide
Full Stack Engineer, Senior (Azure)
Oakland or California or Long Beach or El Dorado Hills or Huntington Park or Lodi or Rancho Cordova
$116k-$174k/yr HybridFull Time
Ascendiun
Ascendiun: Nonprofit parent overseeing health insurance and clinical service organizations.
4+ YOE4+ years enterprise app/cloud experience, 4-7 years software development with API focus, 3+ years Microsoft Azure (API Management, Functions/App Services, Azure AD) experience, REST/OpenAPI/MuleSoft, C#/.NET/Java/Python, CI/CD and IaC (Ansible), Docker; healthcare domain preferred.
Microsoft Windows, Linux Server, Remote Desktop Services, Microsoft Azure, Microsoft Azure API Management, Microsoft Azure Functions, Microsoft Azure App Services, Microsoft Azure AD, REST, HTTP, JSON, OpenAPI (Swagger), MuleSoft, C#/.NET, Java, Python, Service Bus, Event Grid, Bitbucket Pipelines, GitHub Actions, Ansible, Docker, AWS, GCP, Citrix
3mo
Save
Mark Applied
Hide
Technical Lead - Software Developer, Data Foundry
San Diego or San Francisco or Boston or Louisville or Indianapolis
$152k-$244k/yr OnsiteFull Time
Eli Lilly and Company
Eli Lilly and CompanyNYSE: LLY: Researches and manufactures medicines for human health.
1+ YOEDegree in a STEM field; significant scientific software development experience; proficiency in Python plus one other language, strong SQL, RESTful APIs, cloud and containerization, MLOps tooling (MLflow, W&B), and lab automation integration experience.
Python, Java, C#, Go, TypeScript, Rust, SQL, MLflow, W&B, Postgres, Redshift, Snowflake, BigQuery, Benchling, RDKit, Schrödinger, MOE, Prefect, Airflow, Nextflow, WDL, Docker, Kubernetes, Git, Linux, Bash, AWS, Azure, GCP, MCP
2mo
Save
Mark Applied
Hide
Senior Software Engineer
New York or Tempe or San Francisco
$180k-$225k/yr HybridFull Time
Wealth.com: Digital estate planning platform for wealth management professionals.
3+ YOE3+ years backend software engineering; strong TypeScript or other typed language; scalable systems; API design; cloud infra; CI/CD; on-call readiness
TypeScript, Java, Go, C#, Kotlin, Rust, AWS, GCP, Azure, Docker, Kubernetes, Node.js, NestJS, tRPC, Prisma, PostgreSQL, REST, gRPC
1w
Save
Mark Applied
Hide
Infinite.dev - Founding Engineer
San Francisco, California, United States
OnsiteFull Time
YieldNest
YieldNest: Liquid restaking protocol for risk-adjusted DeFi yields.
2+ YOE2–5+ years software engineering experience; proficiency in two of Next.js, TypeScript, C#, Go, or Python; experience with event-driven architectures, full-stack ownership, and AI-assisted development tools.
Next.js, TypeScript, C#, Go, Python, Cursor, windsurf