26 net engineer jobs at 22 companies in Mastic, NY
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.NET Developer
Deer Park, New York, United States
$115k-$120k/yr RemoteFull Time
4+ YOE4+ years building C#/.NET applications, SQL Server, web framework experience (Blazor/ASP.NET/React), Git/SVN, RabbitMQ preferred, production support experience, AI tool (Claude) usage, clear written communication.
C#, .NET, SQL Server, Blazor, ASP.NET, React, Git, SVN, RabbitMQ, Jira, PagerDuty, Claude
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C# .NET Developer
East Haven, Connecticut, United States
OnsiteFull Time
2+ YOE.NET Framework/.NET Core and C# experience, Blazor, SQL Server (2016+), REST/SOAP, Visual Studio, Git, HTML/CSS/JavaScript, web API development, Agile experience.
.NET Framework, .NET Core, Blazor, C#, SQL Server 2016, ASP.NET, ADO.NET, REST, SOAP, Visual Studio, Git, HTML, CSS, JavaScript, JSON, AJAX, Wrike, Jira, bash, PowerShell, cmd
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Quality Engineer
Wallingford, Connecticut, United States
OnsiteFull Time
3+ YOEBachelor's in engineering, 3+ years quality engineering experience in aerospace, proficiency with DISCUS and Net-Inspect, knowledge of AS9100/AS9102, strong problem-solving and communication skills.
DISCUS, Net-Inspect
1w
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Full Stack Developer (.NET API) - Senior Software Engineer
Stamford, Connecticut, United States
OnsiteFull Time
6+ YOEBachelor's in computer science or related field, 6+ years full-stack experience with .NET Core API, Angular and SQL Server, strong C#/Web API and front-end (HTML/CSS/JavaScript) skills, REST API experience, communication and leadership abilities.
Angular, .NET Core, SQL Server, C#, Web API, HTML, CSS, JavaScript, Microsoft Azure, Git
2w
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Lead Engineer - Cloud & Gen AI
Orange, Connecticut, United States
$141k-$176k/yr OnsiteFull Time
10+ YOEBachelor's degree and 10+ years relevant experience; 3+ years AI; strong AWS and Azure, Terraform, Docker, Kubernetes, Python/Java/.NET; experience with TensorFlow or PyTorch and vector databases; excellent communication.
AWS, Azure, Terraform, TensorFlow, PyTorch, Python, Java, .NET, Docker, Kubernetes, Langchain, Semantic Kernel, Spring AI, vector databases
2w
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Generative AI Lead Engineer
Dallas or Stamford or Chicago
$120k-$140k/yr HybridFull Time
Strong experience with generative AI, LLMs and prompt engineering; hands-on development using .NET, React, Python; designing RAG pipelines, model training/fine-tuning, and Azure deployments.
.NET, React, Python, Claude, LangChain, LlamaIndex, Azure
2mo
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Generative AI Lead Engineer
Dallas or Stamford or Chicago
$120k-$140k/yr HybridFull Time
Generative AI, LLMs, prompt engineering; hands-on with .NET, React, Python; AI/ML architecture design (RAG); model training and optimization; Azure deployment
.NET, React, Python, LangChain, LlamaIndex, Claude, Azure
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Generative AI Lead Engineer
Dallas or Stamford or Chicago
$120k-$140k/yr HybridFull Time
5+ YOEStrong experience in Generative AI, LLMs, prompt engineering; hands-on with .NET, React, Python; experience with RAG architectures, API integrations; Azure cloud; ability to deploy AI-enabled applications.
.NET, React, Python, LangChain, LlamaIndex, Claude, Azure, RAG
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Lead Software Engineer
Shelton or Indiana or Ohio or Louisiana or Iowa or New Hampshire or Delaware or North Carolina or Utah or Montana or Oklahoma or Virginia or Arkansas or Alabama or Missouri or Pittsburgh or Nevada or San Antonio or Tampa or St. Petersburg or Mississippi or Orlando or Tennessee or New Mexico or Kansas or Florida or Maitland or Phoenix or Idaho or West Virginia or Maine or Pennsylvania or Nebraska or South Carolina or Georgia or Wisconsin or Texas or Gilbert or Sunrise or Port St. Lucie or Kentucky or Dallas
HybridFull Time
7+ YOE7+ years C#/.NET development experience, bachelor's in CS or related, strong OOP and design patterns, SQL Server and Azure experience, DevOps and source control familiarity.
.NET Framework, .NET Standard, .NET Core, .NET 9, .NET, C#, Blazor, Razor Pages, ASP.NET WebForms, WCF, Worker Services, JavaScript, Microsoft SQL Server, Microsoft Azure, CI/CD, Git, Microsoft Azure DevOps, Jira, Confluence
2mo
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Senior Operating Platform Engineer
New York City or Greenwich or Garden City or London or Dublin
$190k-$250k/yr OnsiteFull Time
7+ YOE7+ years professional software engineering with 4+ years full-stack experience; expertise with Angular, C#/.NET, Python, Microsoft SQL Server, Snowflake, AWS, Kubernetes, CI/CD; AI/LLM workflows and financial services experience; strong communication.
Angular, C#, .NET, Python, Microsoft SQL Server, Snowflake, AWS, Kubernetes, CI/CD, LLM
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Senior Software Developer
Roslyn, New York, United States
$145k-$155k/yr OnsiteFull Time
5+ YOE5+ years experience with Oracle or SQL Server, 2+ years BI/reporting, experience with ETL, Linux scripting, SFTP integrations, JavaScript and programming languages (C#, .Net, Java, Python); bachelor's degree required.
Oracle, SQL Server, Origami Risk, Linux, JavaScript, SAP BusinessObjects, Power BI, Tableau, SFTP, GIT, C#, .Net, Java, Python
3w
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Embedded Systems Engineer (Hardware & Firmware Design)
Bellmore, New York, United States
$85k-$130k/yr OnsiteFull Time
10+ YOEBachelor's degree required, 10+ years embedded systems experience, strong C skills, Microchip PIC/MPLAB experience, familiarity with communication protocols and firmware debugging.
Microchip PIC, MPLAB IDE/IPE, C, C#, VB, .NET, SQL, TCP/IP, UDP, SPI, I²C, UART, RS-232/485, USB, Bluetooth, RTOS
1mo
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Sr Software Development Engineer
Houston or Greenwich
$93k-$232k/yr HybridFull Time
10+ YOE10+ years software development experience; proficiency in .NET and/or Java; cloud (AWS/Azure) experience; hands-on coding, API and database design, CI/CD and Git; healthcare claims or analytics domain experience preferred.
.NET, Java, AWS, Azure, FHIR, HL7, CI/CD, Git
5d
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Application Developer – Internal Platform
Glen Cove, New York, United States
$125k-$150k/yr HybridFull Time
4+ YOERequires 4+ years building production web applications, strong C#/.NET and SQL Server experience, MVC knowledge, JavaScript framework familiarity, API design, and third-party platform integration experience.
C#, .NET, SQL Server, MVC, React, Vue, Alpine, Angular, Shopify, Galley, ShipStation, ASP.NET Web Forms, ASP.NET MVC, Razor, Microsoft Entra ID, ERP
2mo
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Sr Developer - Full Stack
Hauppauge, New York, United States
$111k-$158k/yr OnsiteFull Time
6+ YOEBachelor's in computer science or related field; 6+ years software development; experience with C#/.NET, Angular, AngularJS; strong SDLC knowledge; leadership abilities.
C#, .NET, Angular, AngularJS, TFS, Git, MS SQL Server
1mo
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Sr Software Development Engineer
Houston or Greenwich
$93k-$232k/yr HybridFull Time
10+ YOE10+ years software development experience; hands-on coding in .NET and/or Java; cloud (AWS/Azure); claims adjudication or healthcare payments experience; API, FHIR/HL7, CI/CD and Git; database design and performance tuning; microservices and cloud-native architectures.
.NET, Java, AWS, Azure, FHIR, HL7, CI/CD, Git
1mo
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Lead QA
Great Neck, New York, United States
OnsiteFull Time
5+ YOE1+ Mgmt5+ years QA experience (>=1 year lead), strong automation framework experience for UI and API, proficiency in C++, .NET/C#, Java, Selenium, API testing and log analysis; experience with test management tools.
C++, .NET, Java, Selenium, Playwright, RestAssured, Postman, Newman, GoogleTest, Catch2, NUnit, xUnit, Xray, Cucumber, Docker, Kubernetes, CI/CD, FIX
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Software Engineer
Westbury, New York, United States
$120k-$135k/yr OnsiteFull Time
5+ YOE5+ years .NET and database experience, Bachelor's in Computer Science or equivalent, strong C#, SQL/Oracle, Web API, front-end scripting, Visual Studio, version control, and communication skills.
Microsoft .Net C#, Microsoft .Net framework, Microsoft .Net Core, WPF, Winforms, Webforms, MVC, Web API, LINQ, ADO.Net, Azure, Java Script, JQuery, Visual Studio, SQL Server, SSMS, SSRS, SSIS, Oracle, SQL Developer, ETL, PVCS, Subversion, TFS, Cobol, EDI
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Lead AppSec Engineer
Irving or Fort Myers or Stamford
$116k-$170k/yr HybridFull Time
6+ YOERequires 6–8 years in security engineering with DevSecOps, cloud and application security experience; vulnerability scanning, threat modeling, cloud platforms, IaC/PaC, project leadership, and scripting skills.
AWS, Azure, GCP, Java, .NET, HTML, Ruby, PHP, Perl, C#, Python, JavaScript, PowerShell, Bash
2mo
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Senior Software Engineer (Hybrid)
Farmingdale, New York, United States
$90k-$115k/yr HybridFull Time
7+ YOEBachelor's in IT/CS/CE required, 7+ years experience (including 3+ as senior), expertise in C#, WPF/WinForms, SDLC, Microsoft Azure DevOps; hardware interfacing and DAQ experience preferred.
C#, WPF, WinForms, Microsoft Azure DevOps, .NET, .NET Core, ASP.NET, Angular, Entity Framework, SQL, Relational DB, Multi-Function DAQ, PLC, Windows
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