106 c developer jobs at 68 companies in Mastic, NY
2w
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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
1mo
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C++/ Python Developer – Algo & Analytics
Great Neck, New York, United States
$100k-$110k/yr OnsiteFull Time
3+ YOE3+ years software development experience, degree in CS or equivalent, strong C++ and Python skills, UNIX experience, problem-solving, client-facing communication; trading algos and time-series/big-data exposure useful.
C++, Python, UNIX, FlexStrategy Server
1mo
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Software Engineer
Greenwich, Connecticut, United States
OnsiteFull Time
2+ YOEBachelor's in CS/Math/Physics required; 2+ years C++ software development experience with OOP, STL, networking, concurrency, Linux/UNIX and shell scripting; strong communication skills.
C++, C, STL, Linux, UNIX, shell scripting
2mo
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I&C Hardware Engineer II (Windsor, CT, US, 06095)
Windsor or Warrendale
$69k-$87k/yr HybridFull Time
3+ YOEBachelor's in Electrical Engineering; knowledge of analog/digital circuit design; awareness of field devices; experience with AutoCAD/3D modeling; team collaboration; 3+ years experience.
AutoCAD, 3D Modeling, Electrical Design
2mo
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Software Development Engineer, AWS
Seattle or Arlington or Cupertino or Santa Clara or New York or Astoria or Brooklyn or Carle Place
$144k-$224k/yr OnsiteFull Time
3+ YOE3+ years software development; 2+ years design/architecture; 3+ years building complex systems; proficiency in C#, C++, Java, or Perl; Bachelor's degree.
C#, C++, Java, Perl, Python
1mo
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Middle Office Software Developer
Norwalk or Rowayton
$115k-$200k/yr OnsiteFull Time
5+ YOEBachelor's in computer science, 5+ years software development in financial services, experience with C#, Windows and web frameworks, SQL Server, messaging/SOA/APIs, Agile and unit/integration testing.
C#, Windows Forms, WPF, ASP.NET MVC, Angular, JavaScript, Web API, SQL Server, MOM, SOA, APIs, Agile, Coding agents and AI-assisted development tools
1mo
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SDET - Senior Software Developer Engineer in Test (SDET) Controls
Glen Cove, New York, United States
$120k-$150k/yr OnsiteFull Time
4+ YOE4+ years writing production-quality code (Python, C/C++, TypeScript); test automation and CI/CD (Playwright, pytest); hands-on PLC and industrial protocols experience; electrical fundamentals and hardware-in-the-loop testing.
Python, C, C++, TypeScript, Playwright, pytest, Modbus TCP, Modbus RTU, EtherNet/IP, EtherCAT, PROFINET, ROS2, Docker, Allen-Bradley, Siemens, Beckhoff, Structured Text
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
2w
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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 Software Engineer, Calibration, Automation & Tools
New Haven, Connecticut, United States
$124k-$187k/yr HybridFull Time
5+ YOEBachelor's in CS/ECE/math/physics; 5+ years full‑stack experience; strong Python and another high‑level language (Java/Go/C/C++); front‑end frameworks (React/Angular/Vue.js); SQL and PostgreSQL/Oracle; Git, CI/CD, AWS; testing and strong communication.
Python, Java, Go, C, C++, React, Angular, Vue.js, PostgreSQL, Oracle, Git, AWS, CI/CD
2mo
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P&C Producer - CT - Glastonbury, CT - Norwalk
Glastonbury or Norwalk
$120k-$250k/yr OnsiteFull Time
3+ YOE3+ years sales experience in insurance brokerage; Property & Casualty license; college degree preferred; strong communication and negotiation; ability to develop sales plans.
1mo
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Sr. Software Engineer
Miami or Shelton
OnsiteFull Time
5+ YOEBachelor's or equivalent experience, 5+ years production software development, strong with Node.js/TypeScript/Java/C#, serverless AWS (Lambda, API Gateway, DynamoDB, SQS/SNS), REST/GraphQL APIs, CI/CD and Git workflows, Terraform/IaC, and daily use of AI-assisted development tools (GitHub Copilot, Claude).
AWS Lambda, API Gateway, DynamoDB, SQS, SNS, Node.js, TypeScript, JavaScript, Java, C#, Terraform, GitHub, Azure DevOps, Dynatrace, OpenAPI, Swagger, GitHub Copilot, Claude, Git, GitHub Actions, Datadog, CloudWatch, Akamai, CloudFront, OAuth 2.0, OpenID Connect, AWS Cognito, React Native
1mo
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Senior Software Engineer
Lindenhurst, New York, United States
RemoteFull Time
6+ YOE6+ years software development experience, Bachelor's degree or 4 years' experience, strong communication and problem-solving, knowledge of DICOM/HL7 a plus, proficiency with JavaScript (node.js, vue.js, nuxt.js), C#, SQL, PHP, GIT, HTML/CSS.
JavaScript, node.js, vue.js, nuxt.js, C#, SQL, MSSQL, MySQL, Oracle, PHP, GIT, HTML, CSS, DICOM, HL7
3w
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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
2mo
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Senior Software Engineer - Compliance Technology
New York or Greenwich
$150k-$235k/yr OnsiteFull Time
10+ YOE10+ years software development; deep expertise in C#; production SQL queries; React/CSS; Python; AWS; Agile/SCRUM; DevOps (CI/CD, IaC); AI-assisted development tools; finance industry exposure a plus.
C#, SQL, React, CSS, Python, AWS, CI/CD, Infrastructure as Code, AI-assisted development tools
1mo
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Quantitative Developer (USA)
New York or Stamford
$175k-$200k/yr OnsiteFull Time
STEM degree required; strong C++ engineering skills, options and market-data expertise, experience with backtesting and scalable analytics infrastructure, and strong problem-solving and teamwork skills.
C++
3mo
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Senior Software Engineer - Compliance Technology
Greenwich or New York
$150k-$235k/yr HybridFull Time
10+ YOE10+ years software development; expert in C#; SQL; React; CSS; Python; AWS; Agile/SCRUM; DevOps; AI-assisted tools; finance experience a plus.
C#, SQL, React, CSS, Python, AWS, CI/CD, infrastructure-as-code, AI tools
1mo
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Electrical Design Engineer
Chester, Connecticut, United States
OnsiteFull Time
4+ YOEBachelor's in Electrical/Computer Engineering (ABET), 4+ years product development experience, SPICE and Altium proficiency, embedded C/C++ firmware experience, hands-on test equipment skills, strong communication.
SPICE, Altium Designer, C, C++, IAR Embedded Workbench, Visual Studio Code, ICE, JTAG, digital multimeter, oscilloscope, function generator, logic analyzer, FreeRTOS, Zephyr, embOS, Embedded Linux, Jira, Confluence, BigPicture, Git
2w
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Lead RPA Developer
New Haven, Connecticut, United States
OnsiteFull Time
8+ YOE2+ MgmtBachelor's in CS/engineering, 8+ years software/automation experience, 6+ years UiPath hands-on, 2+ years team lead, strong RPA, VB.NET/C# and UIPath Orchestrator skills.
UiPath Studio, UiPath Orchestrator, UiPath Document Understanding, UiPath Automation Hub, UiPath Apps, UiPath Action Center, UiPath Maestro, RE Framework, Microsoft Power Automate, VB.NET, C#, SharePoint, Teams, Outlook, OneDrive, Dataverse, Dynamics 365, ServiceNow, Gen- AI Activities
6d
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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