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STACKIT Platform Services - Secrets Manager & KMS - Software Engineer

Hybrid in Barcelona·Full-time·Added 1 month ago (last checked 26 Oct)

Schwarz Digits

35 open roles

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Our summary

Work mode: Hybrid, Barcelona
Contract: Full-time
English: Required
Benefits: Private health insurance

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Skills

Requirements

What we're looking for

You have a deep enthusiasm for Software Engineering, Applied Cryptography, and Cloud-Native security.
You actively own the entire software development lifecycle, go and k8s being your bread and butter - K8s operators are preferably a core part of your engineering toolkit.
You are familiar with- or eager to master-cryptographic algorithms (AES-GCM, RSA-OAEP, ECDSA) and understand the logic behind secure key wrapping and transport.
You understand that "sovereign" means more than just a location; you understand the auditing and compliance needs of managing secrets in a high-stakes cloud environment.
You don't just look at code; you understand how data flows through a system, identifying potential bottlenecks in API body sizes or cryptographic overhead to ensure cost-efficiency and performance.
You enjoy discovering new security standards and are excited about sharing your knowledge with the team.

Pay & benefits

What you'll get

A modern, well-equipped workplace awaits you at Plaza Catalunya — right in the heart of Barcelona.

As part of our commitment to a positive and supportive work environment, our company offers a range of attractive additional benefits. These include restaurant vouchers, transportation benefits, health insurance, and fitness vouchers. Through our discount platform, you can also enjoy monthly discounts and benefits in a wide variety of categories, from services to clothing to accommodation.

Working closely with international departments, we develop customer-oriented solutions in flexible, small teams.

Our employees are very important to us. You will become part of an appreciative and open corporate culture with flat hierarchies.

We offer you diverse and exciting career opportunities in a dynamic work environment that stands for development and progress.

We believe in giving our employees the flexibility they need to do their best work. Our most popular model is the hybrid model, which gives employees the option to work remotely up to 12 days per month. In-office time is focused on collaboration.

The role

What you'll do

You design and develop our Key Management Service, focusing on secure key generation, lifecycle management (Key Rotation), and high-performance cryptographic operations.
You implement and optimize complex data flows like Envelope Encryption, managing the relationship between Data Encryption Keys (DEKs) and Key Encryption Keys (KEKs) to provide multi-layered security.
You develop Kubernetes operators to automate the entire lifecycle of the KMS and Secrets Manager, ensuring the service is self-healing, scalable, and easy to configure.
You build and maintain robust REST APIs that allow customers to programmatically manage Key Rings, import external keys, and execute signing/verification workflows.
You take ownership in an "You Build It - You Run It" environment, acting as the bridge between security engineering and SRE.
You ensure that every cryptographic operation adheres to industry standards (AES, RSA, ECDSA, HMAC) and provides the necessary audit trails for sovereign cloud requirements.

About Schwarz Digits

Schwarz Digits is the digital and technology arm of the Schwarz Group, one of the world's largest retail groups, which includes Lidl and Kaufland. The company provides cloud services (STACKIT), cybersecurity solutions, and digital products to internal and external clients, with a strong focus on data sovereignty and European cloud infrastructure. With its headquarters in Neckarsulm, Germany, Schwarz Digits operates across Europe and employs thousands of professionals in engineering, data, and security roles.

In Spain, Schwarz Digits has a significant presence, particularly in Barcelona, where it runs a technology hub and a Security Operations Center (SOC). The company is actively hiring international talent for roles in cloud engineering, cybersecurity, and software development, offering a multicultural work environment and the opportunity to work on large-scale European cloud and security projects. For international professionals, Schwarz Digits provides a chance to join a growing tech organization within a major corporate group, with competitive benefits and a focus on innovation.

Industry: Cloud and Cybersecurity
Founded: 2021
Employees: 1,000–5,000
Headquarters: Neckarsulm, Germany
In Spain: Barcelona

Good to know if you are moving

Schwarz Digits is part of the Schwarz Group, which owns Lidl and Kaufland, providing financial stability and a strong corporate backing.
The company operates a major cybersecurity and cloud hub in Barcelona, Spain, with many roles based there.
STACKIT is a European cloud platform designed to meet strict data privacy and sovereignty requirements, offering a unique value proposition.
The company supports hybrid work models and offers relocation support for international hires.
Working language is primarily English, making it accessible for international professionals.

In their own words

About the company & team

Schwarz Digits creates the technological foundation for digital sovereignty in Europe. As the IT and digital division of the Schwarz Group, we develop and manage the IT infrastructures for the retail divisions Lidl and Kaufland, as well as Schwarz Production and PreZero. At the same time, we operate as an independent provider in the external market to support companies across Europe in their digital transformation. We bundle our core services in the areas of Cloud, Cyber Security, Data & AI, Communication, and Workspace.

Join us and contribute to digital sovereignty in Europe. With us, you will work at the intersection of agility and security: You will benefit from fast decision-making processes, enjoy genuine creative freedom in your projects, and be able to build upon the stable foundation of the Schwarz Group.

All open roles at Schwarz Digits