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Senior Software Engineer (m/f/d) Networking & VPN (IPsec)

secunet Security Networks AG -
Berlin

Jetzt bewerben

Details zur Stelle

Ab 65.000 € pro Jahr

Leistungen

Flexible Arbeitszeiten

Qualifikationen

Rust
Informatik
Erfahrung mit Netzwerken
IPsec
Erfahrung in der IT
Linux
TCP/IP
Cyber Security
GitLab
VPN

Vollständige Stellenbeschreibung

Senior Software Engineer (m/f/d) Networking & VPN (IPsec)

Our mission is to lead the transformation to a company-wide platform approach by developing and maintaining shared infrastructure and services as strategic assets. We enable scalable, efficient product development and foster innovation across the organization, empowering teams to deliver value faster and more effectively. We provide the technical means to develop entirely new product classes.

Our team of highly motivated software engineers focused on cutting-edge, security-focused technologies and a DevSecOps platform that supports the entire lifecycle of our products. We deliver measurable business impact by enabling faster time-to-market, reducing development costs, and improving product quality through scalable and reusable services & components.

To enable the product teams, we’re building an operating system based on NixOS that is image-based, immutable, and puts a heavy emphasis on security and reliability. We leverage modern security features like dm-verity, Post Quantum Cryptography (PQC), systemd sandboxing, Secure Boot, Measured Boot via TPM2. We consider all aspects of the operating system starting from booting, over bootstrapping trust in dynamic environments to providing secure networking.

Our Tech Stack

NixOS and thus Linux as the basis for our OS
Rust for all components we develop
Nix as our meta buildsystem
NixOS VM test framework as the basis for all our integration tests
GitLab as the control plane for our development

Your tasks

Design, develop, and integrate components for establishing trust (e.g. via SPIFFE) and securing network connections (e.g. mTLS, IPSec, Wireguard) in dynamic environments
Leverage existing Open Source software to implement state of the art security features
Contribute fixes and improvements upstream in Open Source projects (e.g. Nixpkgs, Linux Kernel, systemd)
Write automated tests (unit, integration, end-to-end) for each feature we ship to ensure consistent quality
Continually improve our CI process, integrating metrics and observability, with a keen eye for secure development processes
Support internal departments/teams in using our OS to build products on top of it

Your Profile

University degree in computer science or a related field. Alternatively, you have roughly equivalent experience to a university degree
Motivation to work on the leading edge of network security on the OS level
Hands-on experience with networking concepts and protocols: VPN, firewalls, TCP/IP, Zero Trust, mTLS
Good understanding of modern cryptography and it's role in network security
Hands-on experience and understanding of modern Linux features
Enjoy continually learning about emerging software development practices like fuzzing, property-based testing, or reproducible builds
Open Source enthusiast that already enjoys working upstream or is motivated to learn how to
Proficient in English (German is an optional bonus)

What we offer

A rare opportunity to build a Developer Platform from the ground up
Work with a cutting-edge tech stack in an ambitious, high-impact environment
A clear product vision, lots of freedom to shape your work, and experienced teammates
Flat hierarchies, quick decision-making, and a strong engineering culture
Flexible working hours, remote options, and modern equipment
You can expect a target annual gross salary starting at 65.000 € (depending on qualifications and professional experience, possibly higher) – consisting of an attractive fixed component and a performance‑related bonus.

Get in touch with us

secunet Security Networks AG
Nicole Schulz
Kurfürstenstraße 58
45138 Essen
Phone: +49 201 5454-0

If you are keen to work for a leading company of cyber security in a fair and trusting environment you should immediately get in touch with us. We're looking forward to your application containing your notice period, your salary expectations as well as the job ID 3322/F.

Jetzt bewerben

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