Junior Security Tooling Engineer — Flexible EU Hours

Crimson7; Belgique; Hybrid; EUR 42,000 - 60,000; Full time

Benefits offered by this job

Hands-on mentorship from senior domain

Real security tooling work shipped to

Job summary

Crimson7 is seeking a Junior Tooling Developer to support R&D of security tooling for offensive and defensive engagements. You will collaborate with senior engineers to build tooling powering Crimson7's security offerings.

The role suits someone with a solid technical foundation, eager to learn, and capable of contributing to real security engagements across finance, defence, and critical infrastructure while joining a collaborative Solution Engineering and Development team.

Qualifications

• Strong proficiency in C# and .NET 9.0.
• Experience building REST APIs with ASP.NET Core.
• Solid understanding of Entity Framework and DbContext, migrations, LINQ.
• Working knowledge of PostgreSQL or similar relational databases.
• Experience with CQRS development pattern.
• Experience with React 18+.
• Experience with TypeScript.
• Knowledge of shadcn/ui and Tailwind CSS.
• Experience with Docker containerization and Dev Containers.
• Familiarity with CI/CD pipelines and GitHub Actions workflows.
• Proficiency with Git version control and branching.
• Ability to read architectural docs for full-stack development.
• Strong problem-solving and teamwork skills.

Responsibilities

• Design and implement RESTful APIs using ASP.NET Core.
• Develop and maintain business logic using the CQRS pattern.
• Write and manage database entities and migrations with Entity Framework.
• Develop frontend features using Next.js (React) with the app router.
• Implement new UI components using the shadcn/ui library.
• Containerize applications using Docker and Docker Compose.
• Maintain CI/CD pipelines with GitHub Actions for automated builds and deployments.
• Participate in code reviews and follow conventional commits.
• Contribute to internal knowledge bases and documentation.
• Ensure secure coding practices and operational discipline.
• Author clear documentation and reports for technical teams.

Skills

C#

.NET

REST APIs

CQRS

React

TypeScript

Reading docs

Problem solving

Team collaboration

Education

Academic background in Computer Science / Cybersecurity

Tools

ASP.NET Core

Entity Framework

PostgreSQL

Next.js

shadcn/ui

Tailwind CSS

Docker

Docker Compose

GitHub Actions

Git

CI/CD

Job description

Crimson7 is seeking a Junior Tooling Developer to support R&D of security tooling for offensive and defensive engagements. You will collaborate with senior engineers to build tooling powering Crimson7's security offerings.

The role suits someone with a solid technical foundation, eager to learn, and capable of contributing to real security engagements across finance, defence, and critical infrastructure while joining a collaborative Solution Engineering and Development team.