Backend Developer

Ethereum Technologies LLC; Jersey City (NJ); On-site; USD 100,000 - 150,000; Full time

Job summary

Ethereum Technologies in Jersey City is seeking a Backend Developer to design, develop, and maintain scalable server-side applications and enterprise services. You will focus on API development, database integration, and building secure backend systems that support business-critical applications.

You will work with Java, Python, C#, or Node.js, implement RESTful APIs and microservices, connect to relational and NoSQL databases, and leverage Docker, Kubernetes, Git, and CI/CD pipelines.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Software Engineering, or related field.
• 5+ years backend development experience.
• Experience building APIs, database-driven apps, and distributed systems.
• Strong knowledge of RESTful APIs and microservices.
• Familiarity with Docker, Kubernetes, Git and CI/CD pipelines.

Responsibilities

• Design, develop, and maintain scalable backend applications and services.
• Build and integrate REST APIs and microservices.
• Implement business logic, data processing, and database operations.
• Optimize application performance, scalability, and reliability.
• Develop secure components with proper access control.
• Integrate backend with front-end apps and third-party systems.
• Troubleshoot defects and production issues.
• Participate in code reviews, unit testing, and design discussions.
• Collaborate with frontend, QA, DevOps, and architects.
• Maintain technical documentation and follow best practices.

Skills

Java

Python

C#

Node.js

Education

Bachelor's degree in Computer Science or related field

Master's degree preferred

Backend/cloud certifications advantageous

Tools

Spring Boot

Django

.NET Core

Express.js

PostgreSQL

MySQL

MongoDB

Redis

Docker

Kubernetes

Git

CI/CD

Job description

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

Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Role Overview:

The Backend Developer will be responsible for designing, developing, and maintaining scalable server-side applications and enterprise services. This position focuses on API development, database integration, application performance, and building secure backend systems that support business-critical applications.

Technical Skills & Development Expertise:

Strong programming experience in Java, Python, C#, or Node.js.

Hands‑on experience with backend frameworks such as Spring Boot, Django, .NET Core, or Express.js.

Strong knowledge of RESTful APIs, microservices architecture, and API integration.

Experience with relational databases such as PostgreSQL, MySQL, Oracle, or SQL Server.

Familiarity with NoSQL databases such as MongoDB, Redis, or DynamoDB.

Understanding of data structures, algorithms, and object-oriented programming.

Experience with messaging technologies such as Apache Kafka or RabbitMQ.

Knowledge of cloud platforms such as AWS, Azure, or Google Cloud.

Familiarity with Docker, Kubernetes, Git, and CI/CD pipelines.

Understanding of authentication, authorization, API security, and application performance optimization.

Key Development Responsibilities:

Design, develop, and maintain scalable backend applications and services.

Build and integrate REST APIs and microservices.

Implement business logic, data processing, and database operations.

Optimize application performance, scalability, and reliability.

Develop secure application components and implement access‑control mechanisms.

Integrate backend services with front‑end applications and third‑party systems.

Troubleshoot application defects and resolve production issues.

Participate in code reviews, unit testing, and technical design discussions.

Collaborate with frontend developers, QA engineers, DevOps teams, and architects.

Maintain technical documentation and follow software development best practices.

Experience & Technical Competencies:

5+ years of experience in backend development or software engineering.

Strong hands‑on experience developing enterprise‑level backend applications.

Experience building APIs, database‑driven applications, and distributed systems.

Knowledge of Agile development and software development lifecycle practices.

Strong debugging, analytical, and problem‑solving abilities.

Ability to work independently and collaborate with cross‑functional teams.

Educational Background:

Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related field.

Master's degree is preferred.

Relevant backend development or cloud certifications are an advantage.

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.