Backend Engineer II – Payments & API Integrations (Hybrid)

CoStar Group; Richmond (VA); Hybrid; USD 108,000 - 140,000; Full time

Benefits offered by this job

401(k) retirement plan with matching

Employee stock purchase plan

Paid time off

Tuition reimbursement

Job summary

CoStar Group in Richmond, VA seeks a Software Engineer II to join a new team building back-end services, APIs and integrations in the finance tech organization. The role focuses on moving financial data between external platforms and our enterprise contracting system, with a path to configurable, reusable services.

You'll work with .NET, SQL and data tools, implement scalable APIs and data integrations, and collaborate across engineering, product, DevOps and DBA teams to deliver production

Qualifications

• Bachelor’s degree from an accredited college/university.
• 3+ years of professional software development experience in strongly typed languages for server-side processing.
• Strong experience with relational databases, including design and performance optimization.
• Experience building scalable APIs and system integrations across REST APIs, message brokers or event streams.
• Experience building configurable, reusable frameworks that support multiple integrations or business processes rather than hard-coded, single-purpose implementations.
• Strong understanding of CI/CD principles, infrastructure as code, automated deployment pipelines, and source control systems.
• Strong analytical and problem-solving skills, with attention to detail and excellent communication skills.
• Experience with AI-assisted development tools to accelerate software delivery.

Responsibilities

• Contribute to technical discussions and architectural decisions.
• Design, develop, and maintain back-end applications and APIs using the Microsoft .NET technology stack, SQL and other data tools.
• Champion maintainable, well-tested code and sound design: clear separation of concerns, loose coupling, and consistent use of established design patterns.
• Collaborate with engineering, product, DevOps and DBA teams to deliver production systems and participate in code reviews.
• Work from requirements through delivery, partnering with senior engineers and business stakeholders to turn business context into technical designs and development-ready specifications.

Skills

C#

GoLang

Java

Node with TypeScript

Relational Databases

API Design

CI/CD

AI-assisted tooling

Education

Bachelor’s degree

Tools

SQL

RabbitMQ

SQS

Kafka

Azure Service Bus

Docker

Kubernetes

AWS

Azure

GCP

Elasticsearch

OpenSearch

Datadog

Kibana

Databricks

Python

Job description

CoStar Group in Richmond, VA seeks a Software Engineer II to join a new team building back-end services, APIs and integrations in the finance tech organization. The role focuses on moving financial data between external platforms and our enterprise contracting system, with a path to configurable, reusable services.

You'll work with .NET, SQL and data tools, implement scalable APIs and data integrations, and collaborate across engineering, product, DevOps and DBA teams to deliver production