Senior Backend Architect – AWS, Terraform, HR Platform

Siemens Energy; Lisboa; Hybrid; EUR 70,000 - 90,000; Full time

Job summary

Siemens Energy Lisboa is seeking a Senior Backend specialist to join the COIN platform team. You will design and implement backend components in C# and .NET, work with AWS services, and coordinate with product owners and external consultants to deliver scalable solutions.

This role emphasizes architecture, security, and data design as you drive backend solution choices, IaC with Terraform, and collaboration across cross-functional teams in a hybrid Remote/Office setup.

Qualifications

• Bachelor’s degree in computer science, engineering, or a related field.
• 4+ years of backend development with C# and .NET.
• Experience with AWS cloud services and IaC tooling.

Responsibilities

• Coordinate external providers, manage workloads and sprints.
• Handle contract management with external providers.
• Develop backend architecture and optimize AWS-based services.
• Prepare IaC using Terraform and ensure security/compliance.
• Collaborate with cross-functional teams and stakeholders.

Skills

Leadership

Communication in English

Requirements engineering

Education

Bachelor's degree in computer science / engineering

Tools

AWS

Terraform

RDS

MSK

Redis

REST APIs

SQL

EF Core

Jasmine

Karma

C#

.NET

Job description

Siemens Energy Lisboa is seeking a Senior Backend specialist to join the COIN platform team. You will design and implement backend components in C# and .NET, work with AWS services, and coordinate with product owners and external consultants to deliver scalable solutions.

This role emphasizes architecture, security, and data design as you drive backend solution choices, IaC with Terraform, and collaboration across cross-functional teams in a hybrid Remote/Office setup.