Jobs in the United States

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Added 3 mins ago
C
Entry-level Healthcare Analyst
Cognizant
Honolulu, HI
- $65,000 USD / year
Internship or academic experience with programming languages like Java, .NET, C#, and PL/SQL.
Added 3 mins ago
C
Senior .NET Developer
Cognizant
Honolulu, HI
- $70,000 to $117,000 USD / year
As a Senior .NET Developer, you will make an impact by designing and developing scalable application components, backend services, and APIs that support complex business workflows. You will…
Added 3 mins ago
C
C# NET Angular with TSQL
Cognizant
Honolulu, HI
- $64,025 to $94,500 USD / year
We are seeking a highly skilled Senior .NET / SQL Developer to join our team. In this role, you will be responsible for designing, developing, and supporting enterprise applications with a…
Added 8 mins ago
BH
Principal Enterprise Cloud Architect
Banner Health
Remote, United States
- $76.73 to $127.88 USD / hour
Added 9 mins ago
Cyber Data Privacy - Consultant
Deloitte
Gilbert, AZ
Experience with application development and testing using one or more programming or scripting languages (e.g., .Net, C#, Python)
Added 23 mins ago
Software Developer
F.H. Black & Company Incorporated
Remote, United States
The Software Developer is also responsible for supporting development across the broader technology environment, including C#/.NET, databases, APIs, JavaScript, HTML, and CSS. The position…
Added 27 mins ago
Faculty - Computer Information Systems - Information Technology
Amarillo College
Amarillo, TX
…such as C#, Java, C++, JavaScript, Python, Visual Studio, PHP, .NET, MySQL, and other relevant…
Added 51 mins ago
T
Development Manager
TEKsystems
San Diego, CA
- $138,000 to $178,600 USD / year
Added 1 hour ago
JH
Enterprise Web and DevOps Architect (IT@JH Cloud & Virtualization Services)
Johns Hopkins University
Remote, United States
- $119,515 to $209,100 USD / year
Networking / Web / Infrastructure (Cloudflare, NGINX, RHEL, Windows Server, PHP, .NET, Python)
Added 1 hour ago
C
Entry-level Healthcare Analyst
Cognizant
Bismarck, ND
- $65,000 USD / year
Internship or academic experience with programming languages like Java, .NET, C#, and PL/SQL.
Added 1 hour ago
C
C# NET Angular with TSQL
Cognizant
Bismarck, ND
- $64,025 to $94,500 USD / year
We are seeking a highly skilled Senior .NET / SQL Developer to join our team. In this role, you will be responsible for designing, developing, and supporting enterprise applications with a…
Added 1 hour ago
Software Engineer 2 (Java)
CenPOS, LLC
Atlanta, GA · Hopkins, MN
Knowledgeable on and experience with technologies like Java, .NET, and microservice structures.
Added 2 hours ago
CR
Software Engineer I (C#/.NET)
CoStar Realty Information, Inc.
United States
- $108,000 to $154,000 USD / year
…building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that they are…
Added 3 hours ago
Digital Delivery Manager
GlaxoSmithKline LLC
Remote, United States
Added 3 hours ago
Lead Integration Engineer II
Deloitte
Boston, MA
Experience with Java, Spring Boot, JavaScript, Python, .NET, and/or Microsoft technologies.
Added 3 hours ago
MC
Information Technology Senior Software Developer (Communications, Information & Technology)
Miami-Dade County
FL
- $96,561.5 to $161,053.46 USD / year
…(CITD). This position supports highly complex, mission critical .Net based applications and vendor packages with various interfaces, both internal and external to the County. This position…
Added 3 hours ago
MC
Information Software Developer (Communications, Information & Technology)
Miami-Dade County
FL
- $83,725.44 to $140,071.49 USD / year
C#; ASP.NET; ADO.NET; EF; .NET framework V4 and above; .NET Core; HTML5/CSS and responsive UI; JavaScript/Typescript and/or Modern UI frameworks, Blazor, MVC architecture; Web Services and…
Added 3 hours ago
Full Stack Developer - TypeScript/Node/React - Java/C#
Kelly Services
Boston, MA
The selected engineer will play a key role in modernizing legacy Java/Spring and .NET applications by rebuilding them using modern technologies including Node.js, TypeScript, Angular, and…
Added 3 hours ago
Software Developer - .NET/TypeScript/React/Angular
Kelly Services
Boston, MA
We are seeking a .NET Software Engineer to join a growing technology team focused on building modern, scalable web applications and enterprise solutions. This role will contribute across…
Added 3 hours ago
Principal Engineer
ServiceTitan, Inc.
Remote, United States
Deep expertise in at least one primary technology stack (e.g. C#/.NET, Java,C++ or equivalent), with the ability to quickly ramp up on and contribute to any technology in ServiceTitan's…
Added 3 hours ago
Senior Backend Engineer
Fresno Summit Advisors
Remote, United States
Added 3 hours ago
Dynamics 365 Customer Engineer 6586279
Accenture Flex LLC Company
Remote, United States
Added 3 hours ago
Manager, Software Development and Engineering
Charles Schwab Inc.
Southlake, TX
Schwab is recruiting a driven, results-oriented software developer who shares our passion for technology, innovation and excellence. Our main goal here at Schwab is to transform people’s…
Added 3 hours ago
Senior Full-Stack Software Engineer
KBR Wyle Services, LLC
Beavercreek Township, OH
…Vue, React, or Angular, integrated with Java/Spring Boot, C#/.NET, or comparable backend…
Added 4 hours ago
UG
Senior Software Engineer
UnitedHealth Group
Minnetonka, MN
- $91,700 to $163,700 USD / year
…assets. You will leverage backend technologies like C# and .NET Core, frontend frameworks like Angular, and database solutions including SQL Server and SSIS to deliver critical business…

CoStar

Software Engineer I (C#/.NET)

Arlington, United States

$108,000 to $154,000 USD / year

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Job details

Pay: $108,000 to $154,000 USD / year
Apply by: Apr 27, 2027
Education: Bachelor’s degree
Experience: 3+ years of deep .NET development (C#) development experience including cross platform communication technologies such as Web API.
Posting language: English
Posted: Oct 29, 2026

Original job description

Software Engineer I (C#/.NET)

Job Description

Overview

CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives.

We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.

As a Software Engineer on the Platform Development team, you will play a key role in expanding the data platform that supports all of CoStar Group’s largest brands including CoStar Suite, LoopNet, Homes.com and Apartments.com. You will deeply understand what drives the business for which you are building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that they are supporting.

CoStar is investing heavily in artificial intelligence to accelerate software delivery, improve platform observability, automate research and business workflows, enhance product experiences through intelligent agents and skills, and improve data quality across enterprise systems. Successful candidates will demonstrate a willingness to learn, adopt, and apply AI technologies responsibly to solve complex business and engineering challenges.

This position is in Arlington, VA and is in office Monday through Thursday with work from home on Friday.

Responsibilities

Build big, distributed, API-driven systems for tens of thousands of users.
Design and implement AI-powered software solutions that enhance the customer experience, improve platform intelligence, and unlock new product capabilities across CoStar brands.
Build and integrate AI skills, agents, tools, and intelligent workflows into internal systems and customer-facing applications.
Produce bullet-proof code that is robust, efficient, and maintainable; our primary tools are C#, .NET Framework, SQL Server, AWS, Claude Code.
Utilize AI models to enhance monitoring, replayability, observability, and diagnostic capabilities to improve system reliability, accelerate problem resolution, and reduce operational risk.
Implement telemetry-driven solutions that proactively identify anomalies, performance bottlenecks, and potential customer-impacting issues.
Learn software design, development standards, and take part in code reviews.
Build intelligent automation solutions that streamline research workflows, improve information discovery, and increase operational efficiency across business functions.
Continually evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and development practices.

Basic Qualifications

Bachelor’s Degree required from an accredited, not for profit, in person university or college.
A track record of commitment to prior employers.
3+ years of deep .NET development (C#) development experience including cross platform communication technologies such as Web API.
Working knowledge and experience with cloud-based platforms (AWS or Azure).
Experience with RESTful web services.
Experience in architecting, designing, and building distributed, service-oriented systems and web applications in an agile environment.
Data modeling experience.
Familiarity with large language models (LLMs), prompt engineering, or agent-based architectures.
Experience working with monitoring, telemetry, observability, or automated diagnostics platforms.
Strong understanding of data quality principles, data governance concepts, and data-centric application design.

Preferred Qualifications and Skills

Strong communication skills (to both business and technical partners).
SQL and database development knowledge.
Familiarity with AWS PaaS services such as Lambda, DynamoDB, and SQS.
Data modeling experience from conceptual, logical, and physical designs.
Experience implementing AI agents, workflow automation platforms, or intelligent search solutions.
Experience applying AI-assisted software development practices to improve engineering productivity and code quality.

What’s in it for You

When you join CoStar Group, you’ll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed.

We offer you generous compensation and performance-based incentives. CoStar Group also invests in your professional and academic growth with internal training, and tuition reimbursement.

Our benefits package includes (but is not limited to):

Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug
Life, legal, and supplementary insurance
Virtual and in person mental health counseling services for individuals and family
Commuter and parking benefits
401(K) retirement plan with matching contributions
Employee stock purchase plan
Paid time off
Tuition reimbursement
On-site fitness center and/or reimbursed fitness center membership costs (location dependent)
Access to CoStar Group’s Employee Resource Groups
Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

The final salary or hourly rate offered for this role will fall within the range set forth below based on a variety of factors, including but not limited to, geographic location, skills, and competencies.

Base Compensation: $108,000 - $154,000 Annually

We welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing

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