Senior Software Engineer - Land.com
Job Description
This role is in our Austin, TX office with a hybrid schedule of 4 days on-site and 1 day work from home.
We are currently seeking a full-time Senior Software Engineer focused on AI-driven product development, modern React applications, and practical large language model (LLM) integration. As a senior member of the Land.com engineering team, you will design, build, and support highly performant web applications and AI-enabled experiences that help drive the growth of our Land.com business unit. The ideal candidate combines strong software engineering fundamentals with hands-on experience applying AI-assisted development workflows, integrating LLM capabilities into production systems, and delivering reliable, scalable customer-facing solutions.
Key Responsibilities:- Design, build, support, and maintain production web applications using React, TypeScript, CSS, JavaScript, C#, .NET, and SQL.
- Lead the development of AI-enabled product features that integrate LLM capabilities into existing business workflows, user experiences, and application services.
- Apply senior-level engineering judgment to evaluate where AI creates meaningful customer or operational value and where traditional software solutions are more appropriate.
- Design and implement LLM integration patterns such as prompt orchestration, structured outputs, tool or API calling, fallback handling, and guardrails.
- Assist in establishing practices for AI-assisted and LLM-powered features, reliability, latency, cost, and user safety.
- Analyze technical requirements and design new components, services, web pages, and controls that meet functional, performance, scalability, availability, and maintainability requirements.
- Apply software design patterns, SOLID principles, secure coding practices, and sound quality management methods to create reusable, maintainable, well-tested application software.
- Mentor engineers on modern development practices, AI-assisted engineering workflows, code quality, testing strategy, and responsible use of LLM tooling.
- Create thorough unit, integration, and functional test coverage for the software and AI-enabled features you own.
- Develop and maintain SQL database scripts, application data access patterns, and supporting services required by product features.
Required Skills: - Bachelor's Degree required from an accredited, in-person, not for profit university or college.
- A track record of commitment to prior employers.
- 6+ years of professional software development experience in production environments, including ownership of complex systems or product features.
- Hands-on experience with React, TypeScript, JavaScript ES6+, C#, .NET, and SQL.
- Practical experience using AI-assisted development tools and workflows to improve engineering productivity, code quality, testing, documentation, or delivery speed.
- Experience integrating LLM APIs or AI services into application code, including prompt design, structured outputs, error handling, and production monitoring.
- Experience with software testing practices such as unit, integration, functional, regression, and performance testing.
- Demonstrated knowledge of SOLID principles, design patterns, API design, and scalable application architecture.
- Experience working within Kanban-oriented engineering teams with strong collaboration across product, design, QA, and engineering stakeholders.
- Ability to clearly communicate technical decisions, risks, tradeoffs, and implementation plans within and across teams.
- Ability to lead work independently, mentor other engineers, manage competing priorities, and deliver high-quality outcomes with minimal supervision.
Preferred Skills: - Self-starter with a strong product mindset and a desire to solve business problems with the help of others.
- Deep understanding of React architecture, component design, state management, accessibility, and performance optimization.
- Experience architecting systems using C#, .NET, SQL, REST APIs, and service-oriented application patterns.
- Experience with Visual Studio, Azure DevOps, Git, CI/CD pipelines, code review practices, and automated quality gates.
- Experience with Elasticsearch, OpenSearch, cloud services, or other search and retrieval technologies.
- Familiarity with responsible AI practices, secure AI integration, data privacy considerations, and guardrails for customer-facing AI features.
What's in it for YouWhen 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
This position offers an annual salary range from $131,000 - $170,000 determined by relevant skills and experience, in addition to a generous benefits plan.
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.
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