Senior ASP.NET Developer jobs

Washington, District of Columbia

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Today

Title: Sr. .NET/ASP/C# Developer Employment Type: Contract Start Date: 01/19/2026 Last Day to Submit: 12/29/25 Term: 9+ Months Location: Washington, DC # of Positions: 3 Interview type: In-Person Work location : Onsite Local Candidates and will to be onsite only 11-15 years of experience. Proven professional experience in the design, development, delivery and enhancement of Client-Server/Web-Based/Cloud-Based/Mobile Software Applications using Microsoft .NET Technologies, ASP & C# (C-Sharp). Thi

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Contract, Third Party

Depends on Experience

Senior Application Developer using Microsoft .NET Technologies, ASP & C# (C-Sharp). with Min 15yrs exp (In Person Interview) (ONSITE_only Local to DMV Area)

Washington, District of Columbia

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Today

We are looking for a App. Technical Specialist Senior (Min 15Yrs. Exp) ONSITE (In Person Interview). POSITION DESCRIPTION DIRECT CLIENT Position Number of positions: 2(TWO) Length: 12 Months+ Work Address: Washington, DC 20002 Immediate interviews (In Person Interview) Please Note this position is ONSITE 11-15 years of experience. Proven professional experience in the design, development, delivery and enhancement of Client-Server/Web-Based/Cloud-Based/Mobile Software Applications using Micro

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Full-time, Third Party, Contract

$DOE

Senior Developer

Remote or Carrollton, Texas

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Today

job summary: Participate in the design, development, and unit testing of moderate to complex areas of the software application development with a focus on problem solving, development sprints, and innovative product programming. location: Telecommute job type: Contract to Perm salary: $55 - 64 per hour work hours: 8am to 5pm education: Bachelors responsibilities: The essential functions of the position include, but are not limited to: - Administration: Own, document, and communicate th

Contract

USD55 - USD64

Senior Developer

Remote or Carrollton, Texas

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Today

Contract

USD55 - USD64

Senior .NET Developer

Mesa, Arizona

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Today

JOB DESCRIPTION Our client is seeking a highly skilled .NET Developer with strong experience in C#/.NET, backend services, API development, and database technologies. The ideal candidate will design and build scalable applications, optimize performance, and collaborate with cross-functional teams throughout the Software Development Lifecycle. Key Responsibilities Collaborate with stakeholders to gather and define feature requirements. Design, develop, and maintain high-performance .NET applicati

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Third Party

$50 - $55 per hour

Senior .Net Developer

McLean, Virginia

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Today

Job Title: Senior .NET Developer Location: McLean, VA 22102 (5 Days onsite a week) Interview Mode: In-person NOTE: Need local candidates only.Job Description: * Solid C# .NET development experience up to the latest .NET frameworks * Experience with .NET Core web application development * Demonstrated expertise in enterprise software development and maintenance using ASP.NET MVC, Web API, WCF, REST Services. * Must be proficient in SOAP- or REST-based web services, XML and JSON technologies * Exp

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Full-time, Contract

BASED ON EXPERIENCE

Sr .Net Developer

Hybrid in Rockville, Maryland

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26d ago

We are highly motivated, flexible, organized, and detail-oriented .NET Full Stack Developer to join our great team in Bethesda MD (Hybrid Position). If you want to learn, grow, and help then this is the job for you. What you do matters and has a significant impact on the medical, health, and scientific communities we serve. Responsibilities Design and develop new features and/or maintain existing applications developed on Microsoft.NET.Develop code and support technical documentation.Work in a

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Full-time

$70 - $75

Senior Full-Stack .NET/React Developer

Remote

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3d ago

Job Title: Senior Full-Stack .NET/React Developer Work location: Remote Duration 12 Months Note: Resumes should be 15+ Years What success looks like in this role: Develop and maintain full stack cloud based web applications using .NET (C#) and React JS. Write clean, maintainable, and testable code with a strong focus on unit and integration test coverage in a microservice architecture environment Design and consume RESTful APIs and work with both relational and non-relational databases. Collabor

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Contract

Depends on Experience

Senior Software Engineer - Full Stack C# Developer

Maryland

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Today

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Cascading Style Sheets (CSS), Software Development, Systems Development Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: Job Description Software Engineer Sr Advisor Deliver simpl

Full-time

USD 108,979.00 - 147,443.00 per year

Senior Software Engineer - Full Stack C# Developer (TS/SCI with Poly/NEW HIRE SIGN-ON BONUS UP TO $30,000)

Maryland

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Today

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Cascading Style Sheets (CSS), Software Development, Systems Development Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: PERKS: This position is eligible for a sign-on bonus up to $

Full-time

USD 119,000.00 - 161,000.00 per year

Senior Software Engineer - Onsite position

New Albany, Ohio

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Today

Integrated Talent Strategies (ITS) is seeking a Senior Software Engineer to join our team for our New Albany, OH area. This onsite position offers a variety of great benefits, including health insurance, 401(k) with company match, paid time off, and more.Must currently reside in the New Albany, OH area Job SummaryAs a Senior Software Engineer, you will be part of a team delivering high-quality technology solutions that help our business run smoothly. You will design, develop, and install softwar

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Contract

BASED ON EXPERIENCE

Senior Net Developer

Remote

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Today

Title Senior Net Developer Location Remote About the Organization Hui Huliau is a nonprofit Native Hawaiian Organization (NHO) and community service organization whose business activities principally benefit Native Hawaiians. As an NHO we operate under U. S. Small Business Administration (SBA) regulations and own small businesses that participate in the SBA 8(a) Business Development Program for minority owned companies. Our small businesses provide a variety of contracted services to the U. S. M

Full-time

Depends on Experience

Senior Web Developer

Alpharetta, Georgia

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Today

Scientific Games: Scientific Games is the global leader in lottery games, sports betting and technology, and the partner of choice for government lotteries. From cutting-edge backend systems to exciting entertainment experiences and trailblazing retail and digital solutions, we elevate play every day. We push game designs to the next level and are pioneers in data analytics and iLottery. Built on a foundation of trusted partnerships, Scientific Games combines relentless innovation, legendary pe

Full-time

Senior .NET Fullstack Developer

San Francisco, California

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18d ago

Hi Job Seekers, We hope you are doing well. We are hiring for the role of Senior Developer- Node.js. Who are we? For the past 20 years, we have powered many Digital Experiences for the Fortune 500. Since 1999, we have grown from a few people to more than 6000 team members across the globe that are engaged in various Digital Modernization. For a brief 1 minute video about us, you can check Role: Senior .NET Fullstack DeveloperLocation: SFO, CA (Onsite) Job Descriptionseeking an experienced, highl

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Full-time

Depends on Experience

Senior Application Developer (Quickbase) with Min 15yrs exp (In Person Interview) (ONSITE_only Local to DMV Area)

Washington, District of Columbia

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Today

We are looking for a App. Technical Specialist Senior (QuickBase) (Min 15Yrs. Exp) ONSITE (In Person Interview). POSITION DESCRIPTION DIRECT CLIENT Position Number of positions: 1 Length: 12 Months+ Work Address: 64 New York Avenue, NE, Washington, DC 20002 Immediate interviews (In Person Interview) Please Note this position is ONSITE Senior Application Developer with proven professional experience in the design, development, delivery, and enhancement of Client-Server/Web-Based/Cloud-Based/Mob

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Full-time, Third Party, Contract

$DOE

Senior Full-Stack .NET/React Developer

Remote

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3d ago

Position: Senior Full-Stack .NET/React Developer Location: Remote Duration: 6+ Months Job Description: What success looks like in this role: Develop and maintain full stack cloud based web applications using .NET (C#) and React JS.Write clean, maintainable, and testable code with a strong focus on unit and integration test coverage in a microservice architecture environmentDesign and consume RESTful APIs and work with both relational and non-relational databases.Collaborate with product manager

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Contract

$60 - $70

ASP.NET Engineer

Arlington, Texas

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Today

Fully remote with SaaS company This Jobot Job is hosted by: Garrett Mathison Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $110,000 - $130,000 per year A bit about us: We are a rapidly growing SaaS company focused on the energy space. We help energy companies manage their assets, train their employees and manage their contractors virtually. Why join us? We offer a fully remote environment with flexible hours, full benefits and a 401k ma

Full-time

USD 110,000.00 - 130,000.00 per year

Mid-Level Full Stack C# Developer (TS/SCI with Poly/NEW HIRE SIGN-ON BONUS UP TO $30,000)

Maryland

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Today

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Design, Software Development, Software Solutions Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: PERKS: This position is eligible for a sign-on bonus up to $30,000 for New HiresYou

Full-time

USD 119,000.00 - 161,000.00 per year

Need for senior .NET (HIPAA)

Albany, New York

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18d ago

84 Months experience using Microsoft Visual Studio to develop/maintain applications in C#, ASP.NET for n-tier web deployment. 84 months experience developing and maintaining web applications that utilize HTML, XML, JSON, AJAX, JavaScript, jQuery, Bootstrap and Cascading Style Sheets. 84 months experience with Oracle: Database design, PL SQL coding, stored procedures, packages, indexes, triggers, creating tables, etc., 84 Months experience interpreting and analyzing business requirements and buil

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Contract

Depends on Experience

*Lead Software Engineer

Kansas City, Missouri

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Today

Our Company We care about helping people. Our purpose is to provide help and inspire confidence in our clients and communities everywhere. Our associates feel a sense of belonging in an inclusive place with an amazing history and a sharp focus on our future. Our connected culture is who we are and how we work together to achieve our strategies, accelerate our transformation, and achieve extraordinary results. It's an exciting time to be a part of H&R Block! What you'll do Provide technical exp

Full-time

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Senior ASP.NET Developer jobs