Senior ASP.NET Developer jobs in Boston, MA

Remote or Lynnfield, Massachusetts

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Today

Job Description Senior Application Developer About the Role We are seeking a highly skilled Senior Application Developer / Technical Lead to design, develop, support, and enhance enterprise web applications using modern Microsoft technologies. The ideal candidate will have strong experience with Angular, C#, .NET, IIS, Identity Management solutions, GitHub, Azure DevOps (ADO), and application security remediation practices. This role requires a hands-on technical leader who can collaborate ac

Full-time

USD 96,250.00 - 125,000.00 per year

Senior Full Stack .NET Developer

Remote

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8d ago

HonorVet Technologies. We're a Service Disable Veteran-Owned IT staffing firm, ISO 9001 and ISO 27001 certified, working with federal agencies, state governments, and Fortune 500 enterprise clients across the US. What makes us different isn't a tagline; it's the way we work. We don't forward resumes and hope for the best. We take the time to understand where a professional like you is headed and only reach out when we genuinely believe there's a fit worth exploring. Job Title- Senior Full Stack

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Contract, Third Party

$55

Senior Full Stack .NET Developer - Remote

Remote or New York, New York

•

Today

Job Role: Senior Full Stack .NET Developer Location: New York City, NY - Hybrid Duration: Long Term Project No C2C only W2 Job Summary: We are seeking an experienced Senior Full Stack .NET Developer to join our team in New York City. The ideal candidate will have strong full-stack development expertise with Angular 15+, C#/.NET, MS SQL Server, RESTful APIs, cloud platforms, and modern DevOps/CI/CD practices. Key Responsibilities: Design, develop, test, and maintain scalable full-stack web app

Contract

$DOE

Senior .NET Developer

Remote or Hybrid in Vienna, Virginia

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8d ago

ITCON Services is seeking a highly experienced Senior Developer for a contingent position to provide operations, maintenance, and modernization of system that includes user forms, the entry, validation, certification, approval, and posting of data and centralized data warehouse to support reporting of program information. The Senior Developer will design, develop, enhance, deploy, and maintain Microsoft-based web applications, data integrations, databases, and reports using C#, ASP.NET/.NET, S

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Full-time

130,000 - 140,000

Senior Level Application Developer

Remote

•

Today

Senior Level Application Developer Contract Olympia, WA (Remote) State client project Mandatory&DesirableKnowledgeand/orSkills Mandatory: Bachelor's degree in either Computer Science/Information Technology and 7+ years of experience or equivalent combination of education and experience developing applications 5+yearsofexperiencedevelopingasyncSoapandRestfulAPIsandconnectingAPIstoapplications 5+yearsofexperiencewithSQLServerandT-SQL 5+yearsofexperiencetestingintegrations 4+yearsofdevelopi

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Contract

55 - 60

Senior Full Stack .Net Developer with AI Engineer - W2 Only

Remote

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6d ago

Title: Senior Full Stack .Net Developer with AI Engineer Location: Remote Overview We are seeking a Senior Full Stack AI Engineer to design, develop, and deploy modern cloud-based applications and AI-driven solutions. The ideal candidate will have strong expertise in .NET development, React, Azure cloud technologies, and production AI/ML deployments. Required Qualifications 6+ years of ASP.NET Core/C# development experience 6+ years of React.js development experience 6+ years of Azure cloud pl

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Contract

$50+

Sr .Net Developer

Remote

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14d ago

Must Haves: API Development experience, .Net core stack esponsibilities: Design, develop, and maintain high-quality, production-grade software solutions aligned with enterprise standards, using Microsoft .NET (Framework and .NET Core), C#, SQL Server, and integrated system components.Contribute across all phases of the software development lifecycle, ensuring adherence to documented processes, coding standards, and quality guidelines.Collaborate with cross-functional team members to design scala

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Full-time, Third Party

65 - 70

Sr Alfresco .NET Developer || Austin, TX (Remote Locals only) || Must have Linkedin and 13+ years of exp.||

Remote

•

Today

Sr Alfresco .NET DeveloperAustin, TX (Remote Locals only) Must have Linkedin and 13+ years of exp. Interview Mode: Telephonic Through Microsoft Teams Must have 7+ years of Alfresco experience Preferred:Education client experience Responsibilities : Development and enhancement of applications supporting Texas 1,247 school districts.Work across multiple agency stakeholders to ensure accuracy and efficacy of assigned components7 years of Alfresco experience, including managing the digital platfo

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Contract, Third Party

Up to $75

IN-INDOT Senior .NET Application & Accessibility Consultant(s)

Remote

•

Today

Senior .NET Application & Accessibility Consultant(s) Primary Location: Indianapolis, IN V-Soft Consulting is currently hiring a Senior .NET Application & Accessibility Consultant(s) for our premier client Indianapolis ,IN. Education and Experience Hands-on experience developing accessible PDF output using .NET PDF libraries with proper tag trees, alternative text, reading order, and table header Experience testing with tools like Claude AI, NVDA, and WAVE Hands-on expertise using GitHub Ent

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Contract, Third Party

Depends on Experience

Senior .NET Developer (Billing Platform)

Remote

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22d ago

Role OverviewContribute to development of a billing/claims platform supporting high-volume transactional systems Build and scale backend services and enterprise applications Improve and evolve existing systems and architecture Design scalable, maintainable, and extensible solutions Participate across the full SDLC, including design, development, testing, and deployment Collaborate cross-functionally to translate business requirements into technical solutions Ensure code quality through test auto

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Full-time

Depends on Experience

Senior .Net Developer (.NET, Node.js , Azure)

Remote

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7d ago

Job Title: Senior .Net Developer (.NET, Node.js , Azure) Location: REMOTE Duration: 6 Months Contract The ideal candidate has experience working in regulated, enterprise environments (such as healthcare), understands the importance of security, reliability, observability, and compliance, and can contribute at both a technical execution and solution design level. Key Responsibilities Application Development (Full Stack) Design, develop, and maintain full-stack applications using .NET (C#, ASP.NE

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Third Party, Contract

Depends on Experience

Senior .NET Application

Remote

•

Yesterday

Title: Senior .NET Application & Accessibility Consultant(sLocation: Remote -- INDIANA LOCALDuration: Long Term (12+ months)Interview Mode: VideoExperienced Senior .NET Application & Accessibility Consultant having experience with AI tools to lead full-stack development and legacy code remediation and testing. In this role, the candidate will perform ADA scan to application code, plan and apply fixes to legacy .NET web applications ensuring strict adherence to WCAG 2.1/2.2 AA and ADA Section 508

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Contract, Third Party

60 - 65

Senior .NET Application & Accessibility Consultant

Remote

•

Today

Hi, Hope you are doing Great! Job Position : IN-INDOT Senior .NET Application & Accessibility Consultant(s) Job Location : Remote, only candidates currently located in Indiana will be considered. Job Duration : 6 Months Job Description : Experienced Senior .NET Application & Accessibility Consultant having experience with AI tools to lead full-stack development and legacy code remediation and testing.In this role, the candidate will perform ADA scan to application code, plan and apply fixes to

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Contract

50 - 55

Senior .NET Application & Accessibility Consultant(s) - Indiana Local Candidate

Remote

•

Yesterday

Job Title: Location: Remote, only candidates currently located in Indiana will be considered. Description: Experienced Senior .NET Application & Accessibility Consultant having experience with AI tools to lead full-stack development and legacy code remediation and testing. In this role, the candidate will perform ADA scan to application code, plan and apply fixes to legacy .NET web applications ensuring strict adherence to WCAG 2.1/2.2 AA and ADA Section 508 standards. The ideal candidate combin

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Contract

$55 - $60

IT Application Development - Sr/Spec (ITAD-SS/ETS)

Remote or Olympia, Washington

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Today

Salary : $99,300.00 - $133,608.00 Annually Location : Thurston County - Olympia, WA Job Type: Full Time - Permanent Remote Employment: Remote Optional Job Number: 2026-07498 Department: Health Care Authority Division: ETS Opening Date: 09/09/2026 Closing Date: 9/23/2026 11:59 PM Pacific Salary Information: The high end of the salary range, Step M is typically a longevity step Description IT Application Development - Sr/Spec (ITAD-SS/ETS) 71115338 Help build the future of Washington's healthcare

Full-time

USD 99,300.00 - 133,608.00 per year

Senior .NET Developer / Cincinnati, OH/ Candidates - REMOTE

Remote or Cincinnati, Ohio

•

Today

Greetings, We're seeking a Senior Full Stack Developer with strong backend expertise in .NET Core/.NET 8 and React.js on the frontend. Join a dynamic team building modern tech solutions for a leading financial and real estate client. Senior .NET Developer w/ React.js Application Developer Application Developer Cincinnati, OH - Hybrid Permanent IMPORTANT NOTE: This role requires the submission of a code exercise, which will take a senior developer 90 minutes (or longer) to complete. Please d

Full-time

Senior .NET Developer (Google Cloud Platform, BigQuery, Python, React, Azure Devops) with min 12+ Years Exp Required

Remote

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2d ago

Job OverviewWe are looking for an experienced .NET Developer with strong hands-on experience in Google Cloud Platform (Google Cloud Platform), BigQuery, AI/Generative AI, React.js, and Python. The ideal candidate will have a strong .NET development background combined with cloud-native application development experience. The candidate will be responsible for designing, developing, integrating, and deploying scalable applications leveraging .NET, Google Cloud Platform cloud services, AI technolog

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Contract

$60 - $70

Senior ASP.NET Developer jobs in Boston, MA, USA