Backend API Engineer - Kotlin/Java, GraphQL, Spring Boot

Creative Solutions Services, LLC; New York (NY); On-site; USD 85,000 - 96,000; Full time

Job summary

Pyramid Consulting, Inc. is actively seeking a Backend API Engineer to design and deliver scalable Kotlin/Java APIs for enterprise mobile services in New York City, onsite.

This 06+ months contract position offers long-term potential and involves building out a Mobile Service Layer and BFF for high-scale applications. The role requires 5+ years of backend experience, strong REST/GraphQL expertise, and hands-on CI/CD, Docker, Gradle, and modern Spring Boot stacks.

Qualifications

• 5+ years of backend engineering experience; 10–12 years is ideal.
• Production experience with Kotlin and Java.
• Strong experience building REST APIs.
• Working knowledge of GraphQL.
• Experience with Spring Boot and modern backend frameworks.
• Hands-on experience with CI/CD and automated testing.
• Strong debugging, refactoring, and performance optimization skills.
• Experience in large enterprise or financial services environments is a plus.
• BFF (Backend for Frontend) and microservices experience.
• Docker, Jenkins, GitHub Actions, Gradle.

Responsibilities

• Design, build, and maintain server-side applications and APIs.
• Develop the Mobile Service Layer / BFF for enterprise mobile apps.
• Create scalable REST and GraphQL services.
• Write clean, production-ready Kotlin and Java code.
• Refactor and modernize legacy services while adding new functionality.
• Troubleshoot production issues and deliver permanent fixes.
• Work across CI/CD pipelines, testing, performance tuning, and deployment automation.
• Collaborate with engineers, product managers, designers, and QA in a large-scale agile environment.

Skills

Kotlin

Java

Spring Boot

GraphQL

REST APIs

CI/CD

Docker

Jenkins

GitHub Actions

Gradle

Job description

Pyramid Consulting, Inc. is actively seeking a Backend API Engineer to design and deliver scalable Kotlin/Java APIs for enterprise mobile services in New York City, onsite.

This 06+ months contract position offers long-term potential and involves building out a Mobile Service Layer and BFF for high-scale applications. The role requires 5+ years of backend experience, strong REST/GraphQL expertise, and hands-on CI/CD, Docker, Gradle, and modern Spring Boot stacks.