LoopNet - Senior Software Engineer

About the role

We are seeking a highly skilled Senior Software Engineer with deep expertise in C#/.NET, AWS cloud development, and hands-on experience with AI coding tools such as Claude Code or GitHub Copilot. This position is located in Irvine, CA and offers 4 days a week onsite with 1 day work from home.

Responsibilities

• Contribute to building scalable, high-quality systems across multiple products and brands—including LoopNet.com—while leveraging modern AI-driven development practices to accelerate delivery and improve code quality.
• Play a key role in architecture decisions and mentoring engineers across the team.

Requirements

• Bachelor’s degree from an accredited, not-for-profit university or college.
• A demonstrated track record of commitment with prior employers.
• 7+ years of production development experience with C# and .NET or .NET Core.
• Proven history of building and launching successful products and platforms.
• Experience delivering products that meet specifications and performance SLAs.
• Strong experience writing unit, performance, and automated end-to-end tests.
• Strong experience building APIs and backend systems with a solid grasp of software design principles.
• Deep understanding of the business context for which you are building software.
• Active participation in mentoring developers and building team consensus.

Preferred Qualifications

• Working knowledge of Vue.js or React in TypeScript.
• Experience with relational database design (MS SQL or MySQL), including performance tuning.
• Hands-on experience with AWS services including S3, SQS, DynamoDB, and ElastiCache, as well as Apache Kafka and Datadog.
• Experience with microservices, distributed systems, Docker, and Kubernetes.
• Familiarity with CI/CD pipelines, DevOps practices, and Infrastructure as Code tools.
• Application security knowledge and experience with Git-based workflows.
• Hands-on professional experience with AI coding tools such as Claude Code, GitHub Copilot, or equivalent.
• Experience with cloud data warehouse platforms (BigQuery, Databricks, or Snowflake) and proficiency in Python for data engineering or analytics workflows.

What's In It For You

• Generous compensation and performance-based incentives.
• Internal training and tuition reimbursement.
• Comprehensive benefits package including healthcare coverage, life, legal, and supplementary insurance, virtual and in-person mental health counseling services, commuter and parking benefits, 401(K) retirement plan with matching contributions, employee stock purchase plan, paid time off, and tuition reimbursement.
• Additional perks such as a complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks, access to a fitness center, and Employee Resource Groups.