Back-End Developer

PTGR AG; Time; On-site; NOK 7,344 - 14,688; Full time

Job summary

PTGR AG is seeking a Back-End Developer to design, develop, and maintain server-side components for scalable, secure, and high-performance applications. You will collaborate with frontend, AI, and infrastructure teams to ensure robust system integration and reliability.

The role emphasizes developing APIs, databases, and security protocols, with a focus on high-quality, well-documented code and continuous improvement in backend technologies. Addis Ababa location supports onsite collaboration.

Qualifications

• Proficient in backend programming languages including Go, Node.js, Python, Java, or PHP.
• Experience with backend frameworks (e.g., Express.js, Django, Spring Boot, Laravel).
• Strong knowledge of databases (SQL and/or NoSQL).
• Understanding of RESTful/GraphQL API design.
• Familiarity with cloud services and deployment (AWS, GCP, Azure).
• Strong problem-solving, debugging, and analytical skills.
• Ability to work independently and collaboratively in a team environment.

Responsibilities

• Develop, maintain, and optimize backend systems, APIs, and microservices.
• Manage and maintain databases and ensure data integrity and performance.
• Implement authentication, authorization, and security protocols.
• Integrate third-party services, payment gateways, and APIs.
• Ensure high performance, reliability, and scalability of backend systems.
• Write clean, maintainable, and well-documented code.
• Collaborate with frontend developers, product teams, and IT/DevOps for smooth system deployment.
• Participate in code reviews, debugging, and troubleshooting.
• Implement unit and integration testing to ensure software quality.
• Keep up-to-date with backend technologies and best practices.

Tools

Go

Node.js

Python

Java

PHP

Express.js

Django

Spring Boot

Laravel

SQL

NoSQL

REST

GraphQL

AWS

GCP

Azure

Testing

Job description

Back-End Developer (Full Time | Onsite)

The Backend Developer is responsible for designing, developing, and maintaining the server-side components of our applications. This role ensures our systems are scalable, secure, and performant, while enabling smooth integration with frontend interfaces and third-party services.

About The Role

You will work closely with frontend, AI, and infrastructure teams to develop high-performance backend services. Your work will ensure scalability, security, and reliability across PTGR AG’s technology stack.

Key Responsibilities

• Develop, maintain, and optimize backend systems, APIs, and microservices.
• Manage and maintain databases and ensure data integrity and performance.
• Implement authentication, authorization, and security protocols.
• Integrate third-party services, payment gateways, and APIs.
• Ensure high performance, reliability, and scalability of backend systems.
• Write clean, maintainable, and well-documented code.
• Collaborate with frontend developers, product teams, and IT/DevOps for smooth system deployment.
• Participate in code reviews, debugging, and troubleshooting.
• Implement unit and integration testing to ensure software quality.
• Keep up-to-date with backend technologies and best practices.

Requirements

• Proficient in backend programming languages, including Go, Node.js, Python, Java, or PHP.
• Experience with backend frameworks (e.g., Express.js, Django, Spring Boot, Laravel).
• Strong knowledge of databases (SQL and/or NoSQL).
• Understanding of RESTful/GraphQL API design.
• Familiarity with cloud services and deployment (AWS, GCP, Azure).
• Strong problem-solving, debugging, and analytical skills.
• Ability to work independently and collaboratively in a team environment.

Location

Ethiopia / Addis Ababa