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391 csharp jobs at 163 companies in Vallejo, CA

1mo
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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
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3mo
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Principal Security Software Engineer, Application Security
San Mateo, California, United States
$326k-$385k/yr HybridFull Time
Roblox
RobloxNYSE: RBLX: Platform for creating and playing user-generated 3D digital experiences.
8+ YOE8+ years in cybersecurity with a focus on application security, cryptography, and secure SDLC; ability to influence senior engineers and lead security initiatives.
Python, Golang, C#, Bash
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1mo
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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
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1mo
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Senior Manager, AI Engineering (People Leader) (Gen AI Platform Services)
San Jose or San Francisco or McLean or Cambridge or New York
$251k-$286k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOE1+ MgmtBachelor's in CS/AI/EE/CE + 6 years or Master's + 4 years developing AI/ML; 1+ year people leadership; experience with LLM inference, similarity search/VectorDBs, cloud deployments; Python/C++/C#/Java/Golang; strong communication and technical judgement.
AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, Python, C++, C#, Java, Golang, AWS, Google Cloud, Azure
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2mo
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Software Engineer - Sr Consultant level
Foster City, California, United States
$169k-$271k/yr HybridFull Time
Visa
VisaNYSE: V: Global payment technology facilitating electronic funds transfers.
8+ YOE8+ years software engineering; AI/ML and cloud experience; API/microservices; distributed systems; collaboration across teams.
Java, C++, C#, React, Angular, Kubernetes, Docker, AWS, Azure, GCP, LLMs, AI agent frameworks, GitHub Copilot, APIs, Microservices, Distributed systems, Payment platforms
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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
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3w
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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
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2w
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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
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2w
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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
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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#
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2w
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Sr. Data Engineer
Palo Alto, California, United States
$145k-$220k/yr RemoteFull Time
Allocate
Allocate: A fintech providing a data-rich platform for discovering, modeling, and managing private market investments.
5+ YOE5+ years data engineering experience; strong AWS (S3, EC2, EKS, Redshift, Glue, Athena) and cloud skills; SQL, Python, data modeling, ETL/ELT, and pipeline production experience; familiarity with vector DBs and ML data workflows.
S3, EC2, ECS, EKS, Athena, Redshift, Glue, Step Functions, Terraform, CloudFormation, SQL, Snowflake, Databricks Delta Lake, Neo4j, AWS Neptune, Python, pandas, PySpark, TypeScript, Node.js, C#, Postgres pgvector, Chroma, Pinecone, LangChain, LlamaIndex, Docker, Kubernetes, Kafka, Kinesis, Airflow, Prefect, dbt
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2w
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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
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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.
2+ YOEBachelor's in Computer/Electronics/Mechanical Engineering with 2+ years (or advanced degree), knowledge of OOP/OOD, multithreading, I2C/SPI/UART, C++/C#, semiconductor equipment experience preferred.
C++, C#, I2C, SPI, UART
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2w
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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
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3mo
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SDE-II, Query Processing, Aurora DSQL
Seattle or East Palo Alto
$144k-$224k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
3+ YOE3+ years software development; 2+ years design/architecture; 1+ year SDE experience; 1+ year large-scale distributed apps; OO design; BS in CS/Engineering; one language proficiency
C++, Java, C#, Perl
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2w
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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
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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
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2mo
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Senior Staff, Software Engineer
Palo Alto or United States
$185k-$260k/yr HybridFull Time
DELFI Diagnostics
DELFI Diagnostics: Developing blood-based tests for early cancer detection.
10+ YOESenior-level software engineer with cloud, Python and a compiled language, life sciences exposure, and leadership experience.
Python, Rust, Java, C++, C#, AWS, Jira, Git, CI/CD
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3mo
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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
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1mo
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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
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