Senior Software Developer, Smart Card Middleware (C/C++)

🕒 October 10

🇩🇪 Germany – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 12%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

Apply Now

Find Similar Remote Jobs

Set Up Email Alert For New Jobs

📊 Check your resume score for this job

Improve your chances of getting an interview by checking your resume score before you apply.

Upload Resume

Atos

WebsiteLinkedInAll Job Openings

10,000+ employees

💼 Consulting

🏥 Healthcare

📦 Logistics

Consulting • Healthcare • Logistics

Atos is a global leader in digital transformation, providing a wide range of solutions and services across industries. The company specializes in cloud and infrastructure services, digital business platforms, technology consulting, and cybersecurity, with a focus on enhancing user experiences and supporting enterprise digital journeys. Atos is committed to sustainability and innovation, partnering with various organizations to drive digital advancements, such as its role as the official IT partner for the UEFA and the Olympic Games.

📋 Description

• Further development of proprietary products and design of innovative new solutions • Further development of the Virtual Smart Card (VSC) • Develop and document architectural proposals • Ensure implementation meets deadlines and specified requirements • Maintain and further develop the VSC core logic for Windows, macOS, and Linux • Maintain the key server integration via REST API • Expand authentication mechanisms such as OIDC and mTLS • Develop mobile components using .NET MAUI and C# • Integrate platform-specific native C++ logic for Android, iOS, and iPadOS, including Apple CryptoTokenKit • Implement and maintain system drivers at kernel/driver level for Windows (UMDF 2.0) and macOS (IOUSBHost) • Work with Visual Studio, VSCode, Xcode, CMake, Git/GitLab, Jenkins, Jira/Confluence, and virtualized multi-OS testing and build environments • Collaborate with a highly qualified team • Conduct code reviews and technical discussions in an international, agile environment

🎯 Requirements

• Relevant experience in modern software development • Knowledge of PKI and cryptography • Technical training or a degree in computer science, business information systems, or mathematics is advantageous but not required • Very strong knowledge of and practical programming experience in C++ • Knowledge of C# and Objective-C • Solid experience in cross-platform software engineering on Windows, macOS, and Linux • Experience in software architecture, for example using UML • Experience with continuous integration, such as Jenkins, and configuration management • Practical experience with smart cards (ISO 7816), ASN.1, X.509, CMS, PKCS, and PC/SC • Experience with Visual Studio, VSCode, Xcode, CMake, Git/GitLab, and Jira/Confluence • Knowledge of the Botan cryptographic library • Experience with multithreading and user-mode and kernel-mode debugging • Good command of German and English • Structured, solution-oriented, and goal-focused approach to work • Willingness to learn complex domain-specific topics • Strong commitment to quality and security

🏖️ Benefits

• Training and coaching • Independent work in self-organized teams using agile working methods • Flexible working hours • Option to work remotely • 30 days of paid vacation • Input into the selection of laptops, smartphones, sports equipment, and company bicycles • Regular complimentary breakfasts, lunches, and company events • Subsidy for the Deutschlandticket public transport pass • Free fruit, water, coffee, and other beverages • Individual professional development and career advancement opportunities • Support with retirement planning • Employer-funded savings benefits • Supplemental company health insurance • Occupational disability insurance • Employee discounts with manufacturers, brands, and fitness studios • A crisis-proof, high-growth industry • High level of job stability • Flat hierarchies and short communication channels • Collegial working environment