Arlington, Virginia, United States · Hybrid
$143k–$187k/yr
Senior Software Engineer (C#/.NET) <br> Job Description <br> Overview CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. In…
Skills: C#, .NET Framework, SQL Server, AWS, Web API
Arlington, Virginia, United States · On-site
Lead Product Analyst, LoopNet <br> Job Description <br> CoStar Group is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, …
Skills: SQL, Python, PowerBI, Tableau, A/B Testing
San Francisco, California, United States · On-site
$131k–$195k/yr
Application deadline: Jul 15, 2026 The Amazon Web Services Professional Services (ProServe) team is seeking a skilled Delivery Consultant – Application Modernization, to join our team at Amazon Web Services (AWS). In thi…
Skills: Cloud Architecture, Application Modernization, AWS Solutioning, Infrastructure as Code, AI and Automation
Arlington, Virginia, United States · On-site
$92k–$160k/yr
As AWS continues to rapidly grow, we seek experienced and talented Account Managers to own, operate and help define GTM strategy for a named set of accounts within Enterprise Automotive & Manufacturing customers. These a…
Skills: Account Management, Go-To-Market Strategy, Revenue Growth, Market Penetration, Value Proposition
Arlington, Virginia, United States · Hybrid
$117k–$243k/yr
At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the li…
Skills: Palantir Foundry, Python, TypeScript, Data Pipeline Construction, Data Synthesis
Arlington, Virginia, United States · On-site
Company Description Air is the leader in Enterprise Readiness. Our mission is to establish readiness as a real-time condition that is continuously achieved. Today, a dangerous Readiness Gap exists between what the front …
Skills: Business Intelligence, SQL, Data Warehousing, KPI Modeling, Database Architecture
Arlington, Virginia, United States · Remote OK
$64k–$124k/yr
The Customer Applications Developer will independently manage a range of technical tasks, including implementing enhancements, performing upgrades, and delivering maintenance fixes to meet project requirements. The ideal…
Skills: Python, React, AI, Terraform, DevOps
Arlington, Virginia, United States · Remote OK
$64k–$124k/yr
At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the li…
Skills: Python, React, AI, Terraform, DevOps
Arlington, Virginia, United States · Hybrid
$134k–$184k/yr
About the Team: STR’s Analytics & C2 Division develops novel technologies to solve challenging national security problems through advanced analytics. Our team consists of passionate and motivated individuals with degrees…
Skills: C++, Java, Data Structures, Algorithms, Concurrency
Arlington, Virginia, United States · On-site
AI/ML Engineer Location: Arlington, VA Must have an active Top Secret Clearance Node is supporting a U.S. Government customer to provide support for onsite incident response to civilian Government agencies and critical a…
Skills: Python, AWS, Amazon Bedrock, AI/LLM Integration, Machine Learning Pipelines
Arlington, Virginia, United States · Remote OK
Build what matters as a Sales Lead at RevStar. RevStar is a dynamic team of engineers, architects, and product managers committed to putting your business first in the pursuit of excellence. As an AI-first, full-service …
Skills: Sales Leadership, AWS Co-Selling, Pipeline Management, Strategic Deal Ownership, B2B Sales
Arlington, Virginia, United States · On-site
SAIC is seeking a Back-End Software Developer to design, develop, test, implement, and maintain core application software for our customer on-site in Arlington, VA. This role encompasses a wide range of development activ…
Skills: C# .NET Core, API Development, PL/SQL, Enterprise-Level Applications, Agile Environment
Arlington, Virginia, United States · Remote OK
$1/hr–$2/hr
At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the boundaries of what’s po…
Skills: Agentic AI, Generative AI, Python, Machine Learning, Deep Learning
Arlington, Virginia, United States · Remote OK
$100k–$110k/yr
Senior Business Analyst Department: Delivery Employment Type: Full Time Location: Remote Compensation: $100,000 - $110,000 / year Description At Nüvitek, customer success is our Ethos; together, we drive transformational…
Skills: Requirements Gathering, User Story Writing, Agile Methodologies, Gap Analysis, User Acceptance Testing
Arlington, Virginia, United States · Hybrid
$90k–$110k/yr
Who We Are: Enhesa is the leading provider of regulatory and sustainability intelligence worldwide. As a trusted partner, we empower the global business community with the insight to act today and prepare for tomorrow to…
Skills: Outbound Prospecting, Pipeline Management, Closing Six-figure Deals, SaaS Sales, PaaS Sales
Arlington, Virginia, United States · Hybrid
InterImage is looking for engineers who thrive where innovation meets execution. Our Product Division rapidly transforms emerging technologies into operational capabilities supporting mission-critical customers. This isn…
Skills: Generative AI, Large Language Models, Python, Microsoft Azure, RAG
Arlington, Virginia, United States · On-site
ASRC Federal is a leading government contractor furthering missions in space, public health and defense. As an Alaska Native owned corporation, our work helps secure an enduring future for our shareholders. Join our team…
Skills: C#, ASP.NET MVC, .Net Core, JavaScript, CSS
Arlington, Virginia, United States · On-site
ASRC Federal is a leading government contractor furthering missions in space, public health and defense. As an Alaska Native owned corporation, our work helps secure an enduring future for our shareholders. Join our team…
Skills: Software Automation Testing, API Testing, Java, Groovy, IntelliJ
Arlington, Virginia, United States · On-site
ASRC Federal is a leading government contractor furthering missions in space, public health and defense. As an Alaska Native owned corporation, our work helps secure an enduring future for our shareholders. Join our team…
Skills: ASP.NET, C#, LINQ, MVC, Entity Framework
Arlington, Virginia, United States · Hybrid
$132k–$149k/yr
Job Description: At Remitly, we believe everyone deserves the freedom to access, move, and manage their money wherever life takes them. Since 2011, we've tirelessly delivered on our promise to customers sending money glo…
Skills: SQL, Product Analytics, Business Modeling, Customer Segmentation, A/B Testing
Sign up with Clera and we'll reach out the moment a role actually fits you — no more spraying applications into the void.
Build and design large-scale, distributed API-driven systems and integrate AI-powered solutions to enhance platform intelligence. Lead software design standards and collaborate with cross-functional teams to automate research workflows and improve system reliability.
Requires a Bachelor's degree and over 5 years of deep .NET/C# development experience with cloud platforms like AWS or Azure. Candidates must have experience with distributed systems, data modeling, and familiarity with Large Language Models (LLMs).
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Job Description
<br>
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 Senior 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 located in Arlington, VA and is in office Monday through Thursday with work from home on Friday.
Responsibilities
Basic Qualifications
Preferred Qualifications and Skills
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):
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: $143,000 - $187,000 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.
#LI-AR
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CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing
CoStar Group (NASDAQ: CSGP) is a global leader in commercial real estate information, analytics, online marketplaces, and 3D digital twin technology. Founded in 1986, CoStar Group is dedicated to digitizing the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives. CoStar Group’s major brands include CoStar, a leading global provider of commercial real estate data, analytics, and news; LoopNet, the most trafficked commercial real estate marketplace; Apartments.com, the leading platform for apartment rentals; Homes.com, the fastest-growing residential real estate marketplace; and Domain, one of Australia’s leading property marketplaces. CoStar Group’s industry-leading brands also include Matterport, a leading spatial data company whose platform turns buildings into data to make every space more valuable and accessible, STR, a global leader in hospitality data and benchmarking; Ten-X, an online platform for commercial real estate auctions and negotiated bids; and OnTheMarket, a leading residential property portal in the United Kingdom. CoStar Group’s websites attracted over 143 million average monthly unique visitors in the third quarter of 2025, serving clients around the world. Headquartered in Arlington, Virginia, CoStar Group is committed to transforming the real estate industry through innovative technology and comprehensive market intelligence. From time to time, we plan to utilize our corporate website as a channel of distribution for material company information. For more information, visit CoStarGroup.com.
Offices: 1201 Wilson Blvd, Arlington, Virginia 22209, US · 181 Bay St, Suite 3420, Toronto, Ontario M5J, CA · 81, Rue Taitbout, Paris, Île-de-France 75009, FR · Calle de Serrano, 47, 13th Floor, Madrid, 28001, ES · 32 London Bridge, 26th Floor, The Shard, London, England SE1 9SG, GB
Based on 538 listings with disclosed salaries, most software jobs in Arlington, VA pay between $95k–$208k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 777 open software positions in Arlington, VA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Amazon, CoStar Group, Booz Allen Hamilton, Accenture Federal Services, Innovative Defense Technologies (IDT), among others. Browse the listings above to see every active employer.
Yes — 283 of the 777 open software positions offer remote or hybrid work (89 remote, 194 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
