CoStar Group

Software Engineer II - Backend

CoStar Group$108K — $140K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree from an accredited, in-person college/university
  • 3+ years in software development using strongly typed languages (C#, GoLang, Java or Node with TypeScript)
  • Strong experience with relational databases and performance optimization
  • Experience with scalable APIs and system integrations (REST APIs, message brokers, event streams)
  • Ability to build configurable frameworks for multiple integrations
  • Solid grasp of CI/CD principles and automated deployment
  • Familiarity with AI-assisted development tools for software delivery

Responsibilities

  • Contribute to technical discussions and architectural decisions
  • Design, develop, and maintain back-end applications using the Microsoft .NET stack
  • Champion maintainable code and sound design principles
  • Collaborate with cross-functional engineering teams to deliver production systems
  • Transform business context into technical designs and development specifications

Benefits

  • Comprehensive healthcare coverage (Medical, Vision, Dental, Prescription)
  • Life, legal, and supplementary insurance
  • Mental health counseling services (virtual and in-person)
  • 401(k) retirement plan with matching contributions
  • Employee stock purchase plan
  • Paid time off
  • Tuition reimbursement
  • On-site fitness center with various exercise offerings
  • Complimentary gourmet snacks and beverages
Full Job Description
Software Engineer II - Backend

Job Description

Role Description:

We are seeking a Software Engineer II to join a new team building the next generation of back-end services, APIs and integrations in the finance tech organization. Initially this role will focus on the systems that move financial data between external platforms and our enterprise contracting system, integrating with existing APIs, message queues and SQL databases. You will help build configurable, reusable services that can be extended to new sources, systems and acquisitions through configuration rather than one-off, hard-coded integrations.

You will also help standardize how data moves across our billing systems to allow for greater visibility into patterns, errors and optimizations across a payments flow of billions of dollars a year.

This position is in Richmond, VA and has a work schedule of Monday through Thursday in office and Friday work from home.

Responsibilities:
  • Contribute to technical discussions and architectural decisions aligned with business goals
  • Design, develop, and maintain robust and scalable back-end applications and APIs using the Microsoft .NET technology stack, SQL and other data tools
  • Champion maintainable, well-tested code and sound design: clear separation of concerns, loose coupling, and consistent use of established design patterns
  • Collaborate with engineering, product, DevOps and DBA teams to deliver production systems and participate in code reviews
  • Work from requirements through delivery, partnering with senior engineers and business stakeholders to turn business context into technical designs and development-ready specifications


Basic Qualifications:
  • Bachelor's degree required from an accredited, not-for-profit, in-person college/university
  • Track Record of committment to prior employers
  • 3+ years of professional experience in software development using strongly typed languages for server-side processing, such as C#, GoLang, Java or Node with TypeScript
  • Strong experience with relational databases, including database design and performance optimization
  • Experience building scalable APIs and system integrations across REST APIs, message brokers or event streams
  • Experience building configurable, reusable frameworks that support multiple integrations or business processes rather than hard-coded, single-purpose implementations
  • Strong understanding of CI/CD principles, infrastructure as code, automated deployment pipelines, and source control systems
  • Strong analytical and problem-solving skills, with attention to detail and excellent communication skills
  • Experience with agentic engineering and AI-assisted development tools (e.g., Claude Code, GitHub Copilot) to accelerate software delivery


Preferred Qualifications:
  • Exposure to serverless computing and event-driven architecture, including but not limited to RabbitMQ, SQS, Kafka, or Azure Service Bus
  • Familiarity with microservices architecture, containerization (Docker, Kubernetes), and cloud platforms such as AWS, Azure or GCP
  • Familiarity with observability tools like Kibana, Datadog and other monitoring frameworks
  • Experience with Elasticsearch or OpenSearch, including relevance and index tuning to power fast, accurate search across contract, billing and reference data
  • Databricks, Python or other ETL processing experience
  • Payments or financial systems experience a plus
  • Demonstrated ability to apply AI copilots or agentic workflows for code generation, code review, and root-cause analysis


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), with yoga studio, Pelotons, personal training, group exercise classes
  • 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 - $140,000 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-CH1

About CoStar Group

CoStar Group is a provider of information, analytics and marketing services to the commercial property industry in the United States, Canada, the United Kingdom, France, Germany, and Spain. Founded in 1987 by Andrew C. Florance, the company has grown to include online database CoStar and many online marketplaces, including Apartments.com, LoopNet, Lands of America, and BizBuySell. CoStar Group was founded in 1987 by Andrew C. Florance in Washington, D.C. In 1998, the company became a public company via an initial public offering on the NASDAQ, raising $22.5 million. In 2004, CoStar Group, Inc. v. LoopNet, Inc. became a landmark case in copyright law. In October 2009, the company acquired a building in Washington, D.C., now its headquarters, from the Mortgage Bankers Association for $41.3 million. The building had sold 2 years earlier for $79 million and the company claims it used its analytics data to know the right time to buy. In April 2012, CoStar Group acquired LoopNet for $860 million. In April 2014, the company acquired Apartments.com for $585 million. In April 2015, the company acquired Apartment Finder for $170 million. In July, the company acquired Belbex an online marketplace and information provider for commercial property based in Spain. In February 2017, the company acquired Westside Rentals. In February 2018, the company acquired ForRent.com from Dominion Enterprises for $350 million in cash and $35 million in stock. In October, the company acquired Realla.co an online marketplace for commercial property based in the United Kingdom. In November, the company acquired Cozy Services for $68 million.
Learn more about CoStar Group
Size
4,742 employees
Market Cap
$31.3 billion
Industry
Net Income
$227.1 million
Founded
1987
5 Year Trend
+18.3%
Revenue
$1.6 billion
NASDAQ

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