Senior Software Architect -

USD 200k - 312k
Azure DynamoDB Machine Learning Java JavaScript TypeScript AWS GCP Streaming Deep Learning C# Python
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Senior Software Architect -


Job Description


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 and the NASDAQ 100, 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. is the nation’s #1 rental marketplace for owners, property managers and consumers. is the network that millions of renters every year rely on to find their new place, is continuing to grow our industry-leading sales force.  We provide apartment Property Managers and Owners with a platform to market their property listings and the industry’s most comprehensive virtual tools to attract the most and highest-quality renters.  The Network includes,,,, and eight other leading rental sites. Our suite of services includes digital advertising, social and reputation management, and market analytic solutions which delivers innovative tools for our customers.

Learn more about

As a Senior Software Architect, you will proactively lead the collaboration and engagement with product and engineering teams to deliver cutting edge and innovative solutions based on architectural best practices. You will work with other architects, product management, and engineering to build out the Costar enterprise architecture. 

On any given day you will be creating and documenting architectures for new features, products, and processes; socializing and evangelizing those architectures and designs, best practices; understanding business goals from leadership and Product Management and adding architectural guidance to distill requirements, leverage existing systems across domains, and generally help bring those ideas to life; Discovering, researching, and presenting new technologies that will enhance and improve new and existing systems; Helping balance the needs of Engineering, Product, and Management to deliver cutting-edge and innovative products.

This position is in our Irvine office and is a hybrid work dynamic with 3 days on-site and 2 days remote.

Core Responsibilities:

  • Interfaces with the architecture team and other functional areas to propose the most efficient solution. Presents solutions to senior architects, engineering, and management
  • Ensures solutions are well architected based upon Costar Ecosystem Standards and guidelines
  • Keeps abreast of current and future trends, technology and information that will positively affect organizational projects. Applies and integrates emerging technologies and patterns to new and existing systems architecture where appropriate
  • Assists in the development of solution architecture (both tactical and strategic) to fully manage/support the company’s products, services, systems, and technologies.
  • Assists in the planning and design of new or upgraded systems. Interacts with departments to implement improvements in process
  • Mentors team members in relevant technologies and architecture patterns
  • Develops, documents and ensures compliance with best practices including but not limited to the following: data management, coding standards, object oriented designs, cloud-delivery patterns, platform and framework specific design concerns, and human interface guidelines
  • Consistent exercise of independent judgment and discretion in matters of significance.
  • Regular, consistent and punctual attendance. Must be able to work nights and weekends, variable schedule(s) as necessary
  • Other duties and responsibilities as assigned

Minimum Qualifications:

  • Generally requires 15+ years of experience
  • 5 years+ of experience as a Software Architect
  • Bachelor’s degree in Computer Science or relevant field
  • A track record of commitment to prior employers
  • A broad knowledge base across engineering technologies, disciplines, and platforms
  • Exceptional communication skills and the ability to evangelize solutions to all levels of the organization; this includes written and verbal communications as well as visualizations
  • Extensive experience in software engineering with expert-level proficiency in at least one of these programming languages: C#, Java, Python, JavaScript/TypeScript. Exposure to languages and platforms across the full web application stack is a big plus.
  • Strong understanding of the cloud computing model, information risk and security guidelines and architecture standards and best practices, as well as excellent analytical and problem solving skills
  • Hands on experience with cloud tools using Amazon Web Services (AWS) services or GCP or Azure, including Lambda, DynamoDB, CloudWatch, CloudFormation, SNS/SQS, S3, etc.
  • Experience modeling and implementing large-scale relational and NoSQL database systems.
  • Experience designing/implementing event-oriented architectures and real-time data streaming solutions.

Preferred Qualifications:

Experience with test data management design patterns and implementations in a cloud environment.

  • Experience with applying enterprise data management, reference data management and master data management
  • Understanding of analytic frameworks AI, machine learning, neural networks or deep learning techniques to solve business problems
  • Deep understanding of at-scale cloud software and micro-service best practices
  • Team player able to work effectively at all levels of an organization with the ability to influence others toward consensus
  • Excellent understanding of business complexity and project interdependencies


Founded in 1987, CoStar Group is the leading provider of commercial real estate information, analytics, and online marketplaces. Our suite of online services enables clients to analyze, interpret and gain unmatched insight on commercial property values, market conditions, and current availability.

Behind some of the most well-known brands in the industry, CoStar Group includes CoStar, the largest provider of CRE research and real-time data; LoopNet, the most heavily trafficked mobile and online real estate marketplace;, the premier rental home resource for renters, property managers and owners; Ten-X, our cutting-edge commercial real estate auction platform, STR, the leading provider of performance benchmarking and comparative analytics to the hotel industry; BizBuySell, the largest online marketplace for businesses-for-sales; and Lands of America, the leading operator of online marketplaces for rural real estate.

Headquartered in Washington, DC, CoStar Group maintains offices throughout the U.S. and in Europe, Canada, and Asia with a staff of over 5,500 worldwide.


Working at CoStar Group means you'll enjoy a culture of collaboration and innovation that attracts the best and brightest across a broad range of disciplines. In addition to generous compensation and performance-based incentives, you'll be supported in both your professional and academic growth with internal training, tuition reimbursement, and an inter-office exchange program.  

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

  • Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug 
  • Life, legal, and supplementary insurance 
  • 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), with yoga studio, Pelotons, personal training, group exercise classes, as well as Segways and bikes available for use during the day 
  • Complimentary gourmet coffee, tea, hot chocolate, prepared foods, fresh fruit, and other healthy snacks 

Be part of a team of professionals enjoying the opportunity to learn, do, and grow in a rewarding atmosphere. But don't just take our word for it -- see why our team chose to work at and stay at CoStar Group: 

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.

This position offers a base salary range of $200,000-$312,000, based on relevant skills and experience and includes a generous benefits plan.




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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