Senior Software Engineer (C#/SQL)- Research Development

Overview

Senior full‑stack engineer building .NET web apps for real‑estate platforms.

Key Responsibilities

• poc development
• ci/cd pipelines
• application development
• microservices
• sql optimization
• secure coding

Tasks

-Develop proof-of-concepts (POCs) to evaluate new tools and frameworks. -Use Git, TFS, Azure DevOps, and CI/CD pipelines for version control and deployment. -Participate in Agile/Scrum ceremonies and contribute to incremental delivery and continuous improvement. -Design, develop, and maintain robust and scalable applications using the Microsoft .NET technology stack (.NET Core, ASP.NET Core, C#, MSSQL). -Guide teams in adopting best practices in .NET Core, C# and SQL. -Collaborate with cross-functional teams, participate in code reviews, and mentor junior developers. -Implement solutions using modern architecture paradigms including microservices, domain-driven design (DDD), and event-driven systems. -Ensure adherence to SOLID principles, design patterns, and clean coding standards. -Implement and optimize SQL queries, stored procedures, and database schemas for performance. -Apply secure coding practices, including integration of OAuth, OpenID Connect, and other authentication/authorization frameworks. -Analyze business requirements and translate them into technical designs and development-ready specifications. -Lead technical discussions and make critical architectural decisions aligned with business goals.

Requirements

• .net
• c#
• azure devops
• docker
• sql server
• bachelor's

What You Bring

-Experience with AWS or similar cloud platforms (Azure, GCP). -Proficiency with Azure DevOps, Git, or other version control and build systems. -Comfortable working across the stack with Node.js on the server-side. -Experience with Identity & Access Management, like OAuth, JWT. -A track record of commitment to previous employers. -5+ years of professional experience in software development using the Microsoft Stack, including C#, .NET Framework, .NET Core. -Experience with ASP.NET Web API, and RESTful service design. -Strong experience with MS SQL Server, including relational database design and performance tuning. -Knowledge of JSON, XML, and API development standards. -Bachelor’s Degree required from an accredited, not for profit university or college. -Hands-on experience with Entity Framework for efficient data modeling and data access. -Familiarity with microservices architecture and containerization using tools like Docker and Kubernetes. -Experience with NoSQL databases and API Gateway technologies. -Exposure to serverless computing and event-driven architectures. -Familiarity with message brokers such as RabbitMQ, SQS, Kafka, or Azure Service Bus. -UX/UI experience with modern frameworks like React is a plus. -Experience in unit, performance and automation testing. -Strong analytical and problem-solving skills with attention to detail and excellent communication skills. -Strong understanding of CI/CD principles, infrastructure as code, and automated deployment pipelines.

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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

-Specializes in providing data, research, and insights for commercial real estate professionals. -Operates the largest online commercial real estate marketplace, offering listings and analytics tools. -Known for its innovative approach to tracking property values, trends, and market dynamics. -Focused on transforming real estate with advanced data and technology solutions to drive smarter decisions. -Regularly produces detailed market reports and insights for professionals across sectors such as office, retail, and multifamily housing. -Boasts a strong presence with offices across North America, Europe, and Asia Pacific. -Acquired several key companies, including LoopNet, Apartments.com, and Ten-X, strengthening its market position. -Known for comprehensive property databases that cover millions of commercial and residential listings globally. -Has a reputation for high-quality research that serves investors, brokers, property managers, and other industry stakeholders.

Sector Specialisms

Visa Sponsorship

-no visa sponsorship is provided; candidates must be eligible to work in the u.s.

Security Clearance

-company maintains a drug‑free workplace and conducts pre‑employment substance abuse testing.