Principal Software Engineer

Overview

Design & lead architecture for data‑intensive real‑estate analytics platforms.

Key Responsibilities

• architecture docs
• architecture standards
• technical mentoring
• instrumented design
• security advocacy
• tech evaluation

Tasks

-Create, organize, and maintain architectural diagrams and other system documentation. -Drive and evangelize architectural principles and guidelines to ensure high quality, consistent results across teams. -Provide architectural guidance and mentoring to other technical staff on topics such as microservices, micro-frontends, high-volume data streaming / event processing, etc. -Advocate for and design solutions that are well-instrumented, so that we are confident we are building stable, high-performance products. -Act as an architectural subject matter expert and source of good advice to technical leadership and developers. -Stay up to date and evaluate emerging technologies and development practices to identify how they might improve our systems. -Be an advocate for security and ensure that we are architecting and building secure software products and platforms. -Work in partnership with Product and Technology leadership to deeply understand a project’s complex functional requirements and drive implementation of appropriate technical solutions. -Develop a deep understanding of the CoStar business, and how the technical work we are doing aligns with that strategy. -Partner with engineering managers to ensure that they are following established architectural best practices. -Collaborate with development teams to determine the right architectural direction based on project needs, level of effort, resourcing, timing, etc.

Requirements

• terraform
• aws
• ci/cd
• microservices
• bachelor’s
• 10+ years

What You Bring

-Experience with Infrastructure as Code in Terraform. -Be a go-to resource in the understanding and diagnosis of complex performance, scalability, and reliability issues. -Experience modeling and implementing large-scale relational and NoSQL database systems. -Bachelor’s degree, preferably in Computer Science/Engineering, from an accredited, not for profit university or college. -Experience with modern source control and CI/CD technologies including Git or Azure DevOps. -Understand existing systems and ensure they are well documented, so that you become a go-to source of architectural information across multiple systems. -Experience designing/implementing event-oriented architectures and real-time data streaming solutions. -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 (e.g., Apollo GraphQL). -Strong ability to communicate through architectural diagrams. -10+ years of hands-on experience in designing highly complex enterprise-level web applications, including deep knowledge of microservices, serverless, data, and web applications. -Experience building highly secure software, including tokenization, OpenID, etc. -Team or project leadership experience is a plus. -Significant, hands-on experience designing and implementing solutions using Amazon Web Services (AWS) services including Lambda, DynamoDB, CloudWatch, CloudFormation, SNS/SQS, S3, API Gateway, ElastiCache, DataBricks etc. -Experience establishing software development best practices, including standards, code reviews, source control, builds, testing and operations. -Architect-level certifications from AWS, Azure or GCP -Experience designing and buildings secure systems and security minded development practices. Experience with financial data is a big plus. -Experience with agile development methodologies. -Experience in observability logging/tracing with CloudWatch, DataDog, and/or Kibana.

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Benefits

-Life, legal, and supplementary insurance -Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks -Paid time off -Tuition reimbursement -Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug -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 -Employee stock purchase plan -Virtual and in person mental health counseling services for individuals and family -Commuter and parking benefits -401(K) retirement plan with matching contributions

About Costar Group

-Offers comprehensive data on properties, tenants, leases, and market conditions globally. -Known for its pioneering technology and research, delivers powerful insights to commercial real estate professionals. -Its旗舰平台, CoStar, provides unmatched property data, news, and analytics. -Platforms used by real estate professionals, from brokers to investors to property managers. -Expanded through strategic acquisitions, including the purchase of LoopNet and Apartments.com. -Data-driven insights help clients make informed investment and leasing decisions, shaping the global real estate market.

Sector Specialisms

Security Clearance

-pre‑employment substance abuse testing; drug‑free workplace policy.