Senior Backend Software Engineer (Java/Node.JS)

pureIntegration•Reston, VA

7h•Remote

About The Position

We're looking for a Senior Backend Software Engineer with strong hands-on experience across both Java and Node.js to support backend and microservice development for our client. You'll work on REST APIs and distributed backend systems deployed in a cloud-native, containerized environment, collaborating closely with engineers, technical leads, and product managers across multiple teams. This role requires someone who can move comfortably between Java/Spring and JavaScript/Node.js codebases, has a solid grounding in computer science fundamentals and distributed systems, and takes ownership of issues from identification through resolution with minimal supervision.

Requirements

Strong hands-on Java experience with Spring Framework/Spring Boot
Experience designing REST APIs and backend microservices
Solid grasp of OOP, software design principles, and backend architecture
Familiarity with asynchronous, reactive, or functional programming
Ability to troubleshoot complex backend and distributed-system issues
Hands-on Node.js backend experience, including async patterns and frameworks like Express.js
Comfortable working across both Java and Node.js codebases
Strong AWS experience (or comparable cloud platform)
Experience with containerized applications and Kubernetes (EKS preferred)
Familiarity with Terraform/IaC and CI/CD tools (GitHub Actions, Jenkins, or similar)
Comfortable in Linux environments
Strong grounding in data structures/algorithms, concurrency, distributed systems, and system design
JVM and memory management fundamentals
Database fundamentals (SQL and NoSQL)
Strong communicator across engineering, product, and cross-team stakeholders
Proactively surfaces blockers and risks rather than waiting to be asked
Owns issues end-to-end, including production incidents, with minimal supervision

Responsibilities

Design, develop, and maintain backend services and REST APIs using Java, Spring Framework/Spring Boot, and Node.js
Build and support containerized microservices deployed on AWS, including Kubernetes/EKS environments
Apply asynchronous, reactive, or functional programming patterns where appropriate across both Java and JavaScript codebases
Troubleshoot complex backend and distributed-system issues, performing root-cause analysis and driving fixes through to resolution
Work with Infrastructure as Code (Terraform preferred) and CI/CD pipelines (GitHub Actions, Concourse, Jenkins, or similar) to support deployment and delivery
Design and implement integrations with SQL and NoSQL databases
Participate in code reviews, sprint planning, technical discussions, and troubleshooting sessions
Proactively identify and escalate blockers, risks, and dependencies rather than waiting for others to surface them
Take ownership of production issues, coordinating resolution across internal and partner teams
Communicate technical issues, risks, and proposed solutions clearly to both technical and non-technical stakeholders