Senior Backend Engineer: Secure, Scalable APIs & AI Cloud

Truesec Group; Stockholms kommun; On-site; SEK 750,000 - 1,150,000; Full time

Job summary

Truesec Group is seeking a Senior Backend Engineer to join the Engineering Team. You will design, develop, and maintain the backend of internal tools, building scalable, secure systems that integrate with frontend components.

The role emphasizes performance, security, and mentoring junior colleagues in a dynamic cybersecurity-focused environment. You will work with Python and C#, ASP.NET Core, and Azure services, ensuring robust API development, data management (SQL/NoSQL), and adherence to best

Qualifications

• Extensive backend engineering experience in similar roles.
• Proficiency in Python and C#, with strong OOP knowledge.
• Experience with relational (SQL) and NoSQL databases and API development.
• Background in RESTful API design, authentication (JWT, OAuth) and security best practices.
• Experience with Azure cloud services and ASP.NET Core.
• Strong testing (xUnit) and debugging skills.
• Proficient with Git and Agile methodologies.

Responsibilities

• Design, develop, and maintain the backend infrastructure of internal tools and platforms.
• Create scalable and secure backend solutions that meet performance requirements.
• Collaborate with cross-functional teams to integrate with frontend components.
• Document technical specifications and mentor team members.
• Focus on performance optimization and security throughout the system.

Skills

Python

C#

OOP

SQL

NoSQL

REST APIs

ASP.NET Core

Azure

Git

Agile

xUnit

Security

Tools

ASP.NET Core

Azure App Services

Azure Functions

Azure SQL Database

Job description

Truesec Group is seeking a Senior Backend Engineer to join the Engineering Team. You will design, develop, and maintain the backend of internal tools, building scalable, secure systems that integrate with frontend components.

The role emphasizes performance, security, and mentoring junior colleagues in a dynamic cybersecurity-focused environment. You will work with Python and C#, ASP.NET Core, and Azure services, ensuring robust API development, data management (SQL/NoSQL), and adherence to best