Lead .NET Engineer for Large-Scale Data & API Systems

Matterport; Greater London; On-site; GBP 68,000 - 108,000; Full time

Benefits offered by this job

Private medical cover

Dental cover

Life assurance

28 days annual leave

Pension

Season ticket loans

Maternity/Paternity pay

Equality & inclusion

Job summary

CoStar Group in London is seeking a senior software engineer to design, implement, and scale API-driven systems handling terabytes of data. You will work across the Research Process applications, delivering robust code using C#, .NET, Python, JSON, and AWS, while partnering with QA and DevOps to ensure high performance.

The role requires 5+ years in .NET, strong SQL Server and ETL skills, and experience with Databricks.

Qualifications

• Bachelors degree or equivalent experience.
• 5+ years of .NET development (C#) experience with Web API.
• 3+ years with SQL Server including ETL/data pipeline work.
• Track record of launching data-intensive products.
• Ability to design architectures and ETL strategies.
• Expertise in database design and performance tuning.
• Hands-on experience with cloud relational and NoSQL databases.
• Experience with .NET Core, Python, Jupyter, AWS, and Databricks.

Responsibilities

• Understand business drivers behind the software.
• Take hands-on design, architecture and dev activities across Research Process apps.
• Work on large, API-driven systems with massive data and high transactions.
• Produce robust, maintainable code using C#, .NET, Python, JSON, SQL Server, AWS, Databricks.
• Collaborate with QA to ensure high-quality software.
• Serve as key member of product launch team and work with DevOps on ops issues.
• Deliver work meeting specs, defect-free and high performance; mentor other developers.
• Facilitate ideas exchange and evaluation of emerging technologies.

Skills

.NET development (C#)

Web API

SQL Server

Python

NoSQL databases

Databricks

AWS

ETL/data pipeline

Data modeling

T-SQL

JSON

ASP.NET

Education

Bachelor's degree or equivalent experience

Tools

Databricks

Jupyter Notebook

AWS

NoSQL databases

SQL Server

JSON

ASP.NET

Job description

CoStar Group in London is seeking a senior software engineer to design, implement, and scale API-driven systems handling terabytes of data. You will work across the Research Process applications, delivering robust code using C#, .NET, Python, JSON, and AWS, while partnering with QA and DevOps to ensure high performance.

The role requires 5+ years in .NET, strong SQL Server and ETL skills, and experience with Databricks.