Backend Developer

Post Date

Jan 02, 2026

Location

Greenwood Village,
Colorado

ZIP/Postal Code

80111
US
Mar 10, 2026 Insight Global

Job Type

Contract

Category

Programmer / Developer

Req #

DEN-0544e74a-ab47-4a50-8874-ec1e1f8fb465

Pay Rate

$49 - $61 (hourly estimate)

Job Description

A customer is seeking a Backend Developer to help with the development of a new application for their enterprise customers.

- Analyze existing Java backend services to understand business logic and data flows
- Implement APIs using Java 17 and Spring Boot in a shared backend platform
- Design and build clean GraphQL APIs aligned with frontend requirements
- Work with PostgreSQL and Apache Cassandra data stores
- Support understanding of data migration and legacy system coexistence
- Implement event-driven workflows using Kafka
- Use Redis for caching and performance optimization
- Write unit and integration tests to ensure production-ready code
- Can pay $55-60/h

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.

Required Skills & Experience

- 8+ years of backend development experience
- Strong understanding of microservices or modular backend architecture
- Strong expertise in Java 17, Spring Boot, Spring Framework
- Hands-on experience designing GraphQL APIs
- RESTful API development experience
- Strong experience with PostgreSQL
- Working knowledge of Apache Cassandra
- Experience with Kafka-based event-driven systems
- Experience using Redis

Nice to Have Skills & Experience

- Docker-based application development
- Maven builds and dependency management
- AWS experience (especially S3)
- Strong unit and integration testing experience

Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.