AWS Backend Engineer

Luxoft; Województwo pomorskie; On-site; PLN 100,000 - 120,000; Full time

Job summary

A prominent tech company located in Poland seeks an experienced Backend Engineer to join their growing team. In this role, you will design, develop, and maintain scalable backend systems using Java and Python frameworks, while leveraging AWS services and Terraform for infrastructure management. Ideal candidates should have over 5 years of backend development experience with strong skills in API design, cloud infrastructure, and database management, among other technologies. This position offers a dynamic work environment with collaboration across multiple teams.

Qualifications

• 5+ years of professional experience in backend development.
• Strong proficiency in Java/Python with hands-on experience using Spring Boot/ FastAPI, or Django.
• Experience designing and implementing REST and SOAP APIs.
• Solid understanding and practical experience with AWS services.
• Experience with Infrastructure as Code using Terraform.
• Strong database knowledge: NoSQL and SQL.
• Experience with CI/CD pipelines, Docker, and containerized environments.
• Familiarity with microservices architecture.

Responsibilities

• Design, develop, and maintain backend services using Java (Spring Boot) and Python frameworks.
• Build and maintain RESTful and SOAP APIs following best practices.
• Design and optimize data models and queries for various databases.
• Experience with AWS components.
• Collaborate with cross-functional teams to deliver robust systems.

Skills

Java (Spring Boot)

Python (FastAPI, Flask, Django)

AWS Cloud Infrastructure

Terraform

RESTful APIs

SOAP APIs

DynamoDB

PostgreSQL

MongoDB

CI/CD Pipelines

Docker

Job description

Project description

We’re looking for a Backend Engineer with strong AWS experience to join our growing engineering team. You will be responsible for designing, developing, and maintaining scalable backend systems that power our products and services. The ideal candidate is a hands-on engineer with expertise in Java (Spring Boot) and Python frameworks (such as FastAPI, Flask, or Django), a solid understanding of API design, and strong knowledge of AWS cloud infrastructure and Terraform for Infrastructure as Code (IaC).

Responsibilities

• Design, develop, and maintain backend services using Java (Spring Boot) and Python frameworks (FastAPI, Flask, or Django).
• Build and maintain RESTful and SOAP APIs following best practices in design, performance, and security.
• Design and optimize data models and queries for DynamoDB, PostgreSQL, and MongoDB.
• Experience with AWS components such as Cognito, Lambda, API Gateway, EC2, S3, and CloudWatch.
• Familiarity with Infrastructure as Code using Terraform for deploying and maintaining AWS resources.
• Collaborate closely with cross-functional teams (Frontend, DevOps, Product) to deliver robust, high-performance backend systems.
• Ensure code quality, scalability, and maintainability through proper testing, documentation, and clean architecture principles.
• Participate in design discussions, code reviews, and continuous improvement initiatives.
• Monitor, troubleshoot, and enhance system performance and reliability.

Must have

• 5+ years of professional experience in backend development.
• Strong proficiency in Java/Python with hands-on experience using Spring Boot/ FastAPI, or Django.
• Experience designing and implementing REST and SOAP APIs.
• Solid understanding and practical experience with AWS services, including Cognito, Lambda, API Gateway, EC2, S3, CloudWatch, SNS/SQS, etc.
• Experience with Infrastructure as Code using Terraform.
• Strong database knowledge: NoSQL (DynamoDB, MongoDB); SQL (PostgreSQL/Aurora).
• Experience with CI/CD pipelines, Docker, and containerized environments.
• Familiarity with microservices architecture and event-driven systems.

Nice to have

• Familiarity with telecommunications standards and Remote SIM Provisioning concepts.