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Closed listing

CoStar

Technical Manager (C#/API) - CoStar Group - San Diego, CA

San Diego, United States

$172,000 to $258,000 USD / year

This opening has closed.

The original listing is kept below for reference.

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About employer

Job details

Pay: $172,000 to $258,000 USD / year
Closing date: May 8, 2027
Education: Bachelor’s degree
Posting language: English
Posted: Nov 9, 2026

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Original job description

Archived listing. The details below describe a past opening.

Technical Manager (C#/API) - CoStar Group - San Diego, CA

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.

We’re seeking a Technical Manager to lead one of our API teams, a foundational group behind high-traffic platforms like Homes.com and Apartments.com. These APIs are mission-critical, powering millions of user interactions daily. Their performance, reliability, and scalability directly influence developer productivity, site performance, and ultimately, customer satisfaction.

This is a high-impact leadership role for someone who thrives at the intersection of engineering and product strategy. You’ll guide a technically strong team through the full software development lifecycle, from concept to deployment and beyond. You’ll also collaborate with engineering leaders, product managers, and cross-functional teams to shape the future of our platform.

This API team is a cornerstone of CoStar’s engineering ecosystem. Their work directly affects how other teams build, how fast our platforms perform, and how satisfied our customers are with the experience. From developer velocity to site reliability, this team’s contributions are felt across the organization.

This position is located in La Jolla, CA, and offers a work schedule of 4 days onsite, 1 day work from home.

Responsibilities:

Lead an Agile software development team (6 people) to deliver scalable high performance technical solutions.
Act as a player-coach, who can mentor and coach team members into highly productive team players.
Promote can-do attitude, engineering mindset, and collaboration as fundamental team values.
Influence application architecture and product direction.
Architecting, building, testing, and deploying scalable, reusable, and maintainable APIs that handle large amounts of data.
Drive continuous improvement by focusing on engineering excellence.
Translate business requirements into technical requirements, develop project plans, and work schedules for use by development teams.
Successfully implement software development projects to specification and within scheduled timelines and budget parameters
Collaborate with Product Managers, Designers, and other Agile teams to deliver large initiatives.
Work with recruiting to identify, hire, and onboard top industry talent.
Develop and maintain an in-depth working knowledge of the CRE Industry and CoStar’s business model / technology.
Be hands on and be able to evaluate emerging technologies to identify opportunities, trends, and best practices that can be used to strengthen CoStar’s technology platform and development practices.
Adopt an owner-operator mindset and demonstrate full ownership of the product and technical platforms.
Act as "Voice of the Customer" when participating in product readiness reviews.
Pub/Sub experience

Basic Qualifications:

Bachelor’s Degree is required from an accredited, not-for-profit in-person university or college.
A track record of commitment to prior employers.
10+ years of professional software development experience.
A track record of commitment to prior employers.
8+ years’ experience building large distributed, API-driven systems.
2+ years of experience leading agile teams.
Significant API experience, with deep expertise in back-end technologies (C#, .NET Core 6.x¸ .NET Framework, SQL Server etc.).
Experience with AWS (DynamoDB, S3)
Experience leading multi-tiered (manager of managers) technical teams, working through complex requirements, and offering relevant, timely technical solutions.
Strong written and verbal communication skills; Must be able to communicate at a level appropriate to the audience (direct reports, peers, and senior management).
Excellent team building, negotiation, and consensus building abilities.
Ability to motivate and build high performance software development teams.
Real world experience designing and implementing complex application architectures on Amazon Web Services.

Preferred Qualifications and Skills:

Kafka, SQS, Lambda, Datadog, Terraform
Real Estate knowledge is a bonus.

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 Diversity, Equity, & Inclusion 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: $172,000-$258,000 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

About employer

More about this job

Skills

Customer service
Software development
Agile
Collaboration
Process improvement
Recruitment
Business model
C#
.NET
Microsoft .NET Framework
Microsoft SQL Server
AWS
Amazon DynamoDB
Communication skills
Team building
Negotiation
Apache Kafka
Datadog
IBM Terraform

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