Lead Software Developer, Costar Group London

CoStar Group; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading real estate information provider in the UK is looking for a skilled Developer with 5+ years of experience in C#. Your role will involve designing and developing applications that handle large data volumes. You will work closely with QA and mentor junior developers, utilizing your expertise in SQL Server and cloud databases. Enjoy competitive benefits and an innovative workplace culture focused on collaboration and diversity.

Benefits

Full private medical cover

Dental cover

Life assurance

Member rewards

28 days annual leave

Competitive pension

Season ticket loans

Enhanced maternity and paternity pay

Qualifications

• 5 years of C# development experience including Web API.
• 3 years of experience with SQL Server and writing queries.
• Ability to analyze technical requirements and design data models.
• Experience with ETL and data pipeline engineering.
• Hands-on experience with both relational and non-relational cloud databases.

Responsibilities

• Understand business needs and requirements.
• Involve in design, architecture, and development of applications.
• Work on distributed API-driven systems for high-transaction-volume applications.
• Collaborate with QA to ensure software quality.
• Mentor other developers and facilitate discussions.

Skills

C# development

SQL Server

Web API technologies

Data engineering

Cloud databases

Python

T-SQL programming

Data pipeline engineering

Performance tuning

Mentoring developers

Education

Bachelor’s Degree or equivalent experience

Tools

.NET Framework

AWS

Databricks

Jupyter Notebook

Job description

OVERVIEW

CoStar Group (NASDAQ : CSGP) is a leading global provider of commercial and residential real estate information analytics and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives.

We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry for our customers and even our competitors. We continue that effort today and are always working to improve and drive innovation. By equipping the brightest minds with the best resources available we provide an invaluable edge in real estate.

CoStar is the global leader in commercial real estate information analytics and news. Commercial Real Estate industry professionals around the globe use CoStar to access the most comprehensive data to make decisions with confidence. CoStar delivers immediate verified commercial real estate information on over 5.9 million properties across every market.

RESPONSIBILITIES

Deeply understand what drives the business for which you are building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that they are supporting.

Hands‑on involvement in design, architecture and development activities in the creation of applications covering the entirety of the Research Process.

Work on big distributed API‑driven systems that operate on massive amounts of data in high‑transaction‑volume applications for tens of thousands of users while producing bullet‑proof code that is robust, efficient and maintainable. Our primary tools are C# .NET Framework, Python, JSON, SQL Server, AWS and Databricks.

Collaborate with your QA resources to ensure that the software you deliver is of the highest quality. (Our customers are not beta testers.)

Act as a key member of the product launch team and work closely with DevOps to resolve operational issues.

Deliver work products that meet specifications, are defect‑free and have optimal performance.

Take an active role in mentoring other developers.

QUALIFICATIONS

Bachelor’s Degree or equivalent experience.

A track record of commitment to prior employers.

5 years of development (C#) experience, including cross‑platform communication technologies such as Web API.

3 years of experience with SQL Server, writing SQL queries, data matching / cleansing / enriching, as well as ETL / data pipeline engineering.

A demonstrable track record of building and launching successful products that leverage terabytes of data.

Ability to analyze technical requirements and design new architectures, data models and ETL strategies.

Expertise in database design, complex T‑SQL programming, performance tuning and index analysis.

Hands‑on experience with cloud‑based relational and non‑relational databases.

Facilitate discussions among developers to exchange ideas and introduce innovative technologies.

Evaluate emerging technologies to identify opportunities, trends and best practices that can be leveraged to strengthen CoStar’s technology platform and development practices.

Experience with Core, Python, Jupyter Notebook, AWS and NoSQL databases.

Experience with Databricks and Lakehouse architecture.

WHATS IN IT FOR YOU

Working at CoStar Group means you’ll enjoy a culture of collaboration and innovation that attracts the best and brightest across a broad range of disciplines. As well as having an outstanding working environment based in the Blue Fin or one of our key UK‑wide hubs. Other perks include full private medical cover, dental cover, life assurance and member rewards, 28 days annual leave, a competitive pension, season ticket loans, enhanced maternity and paternity pay and much more!

At CoStar we recognise the positive value of diversity and promote equality. We aim at all times to recruit the person who is most suited to the job and welcome applications from people of all backgrounds, men and women, people of all ages, sexual orientations, nationalities, religions and beliefs. However we particularly encourage applications from women, disabled and Black, Asian and Minority Ethnic (BAME) candidates as these groups are under‑represented throughout the commercial real estate industry.

Employment Type: Full‑Time

Experience: 5+ years

Vacancy: 1