Senior Backend Engineer

Ethereum Technologies; Jersey City (NJ); On-site; USD 140,000 - 210,000; Full time

Job summary

Ethereum Technologies in Jersey City, NJ seeks a Senior Backend Engineer to design and operate scalable cloud-native backend platforms.

You will work hands-on with Kotlin, Spring Boot, Spring Cloud, WebFlux, AWS, and Terraform to build and deploy robust services, improve observability, and ensure resilience.

Qualifications

• We are seeking a highly skilled Senior Backend Engineer with cloud-native backend platform experience.
• The ideal candidate will be hands-on, capable of independently designing, developing, deploying, and managing backend services using Kotlin, Spring Boot, Spring Cloud, WebFlux, AWS, and Terraform.

Responsibilities

• Design, develop, and maintain scalable backend platform services and APIs.
• Build cloud-native microservices using Kotlin, Spring Boot, Spring Cloud, and WebFlux.
• Deploy, configure, and manage AWS infrastructure using Terraform.
• Provision AWS resources manually through IaC practices and troubleshoot infrastructure-related issues.
• Configure, deploy, and manage containerized applications on AWS ECS.
• Collaborate with architecture and platform teams to ensure highly available and resilient systems.
• Optimize application performance, scalability, and reliability.
• Implement best practices around observability, monitoring, logging, and operational excellence.
• Participate in code reviews, technical design discussions, and production support activities.

Skills

Kotlin

Spring Boot

Spring Cloud

WebFlux

AWS

Terraform

AWS ECS

Tools

AWS ECS

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

We are seeking a highly skilled Senior Backend Engineer with strong expertise in building and supporting cloud-native backend platforms. The ideal candidate will be a hands‑on engineer who can independently design, develop, deploy, and manage backend services using Kotlin, Spring Boot, Spring Cloud, WebFlux, AWS, and Terraform. This role requires someone who is comfortable working in a fast-paced environment and can quickly contribute with minimal supervision.

Key Responsibilities

• Design, develop, and maintain scalable backend platform services and APIs.
• Build cloud-native microservices using Kotlin, Spring Boot, Spring Cloud, and WebFlux.
• Deploy, configure, and manage AWS infrastructure using Terraform.
• Provision AWS resources manually through Infrastructure as Code (IaC) practices and troubleshoot infrastructure‑related issues.
• Configure, deploy, and manage containerized applications on AWS ECS.
• Collaborate with architecture and platform teams to ensure highly available and resilient systems.
• Optimize application performance, scalability, and reliability.
• Implement best practices around observability, monitoring, logging, and operational excellence.
• Participate in code reviews, technical design discussions, and production support activities.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.