(Senior) Backend Engineer Security Applications (m/f/d)

secunet is Germany's leading cybersecurity company. In an increasingly networked world, the company, with the combination of products and advice, ensures robust, digital infrastructures and the highest possible protection for data, applications and digital identities. secunet is specialized in areas where there are special requirements for security – such as Cloud, IIoT, E-Government and E-Health. With secunet's security solutions, companies can maintain the highest security standards in digital projects and thus drive their digital transformation. For our SINA evolution team, we are looking for one of our locations in Berlin, Bonn, Dresden, Essen, Hamburg, Hanover, Ilmenau, Munich, Siegen or Stuttgart for the next possible time your smart head. SINA Evolution is the innovation department of secunet for safety-focused products in the public and high-security environment. The team is responsible for building the technical foundation for new product classes and long-term platform solutions. We are looking for an experienced Backend Delevoper (m/w/d) that takes over the technical responsibility for backend services for a safety-critical application. In this role, you are responsible for the design, implementation and further development of robust, scalable and secure backend systems, while at the same time you are heavily involved in practical development. You help in creating the technical foundations and work closely with the frontend developers, system and platform engineers as well as software architects.

Design, development and integration of new functions on the basis of regulatory technical guidelines and other requirements (IT basic protection) Implementation of customer-specific requirements for the optimum adaptation of the software to natural operating environments and re­spective procedures close cooperation with development teams from adjacent product areas for the realization of an overall solution covering all radio, safety and operational aspects In order to meet the technical requirements with partners, authorities and interdisciplinary teams to ensure compliance with the law and system compatibility Co-operation in architectural decisions and the improvement of application quality, performance and safety Technical documentation in accordance with the relevant standards and internal quality guidelines

a completed study of infor­mation or similar, alternative, you have a training and equivalent practical experience very good characteristics in the acceptance and development of object-oriented software solutions very good knowledge in the development with Rust / Java / Go, Linux, Nix / NixOS, GitLab, GitLab CI, Container, Docker Kubernetes insert: Helmet Experience with standard soft-ware development methods and procedures, safe soft-ware development, soft-ware provenance (sonarqube, SBoMs) You are an IDM expert (m/w/d) with experience in confi­cation and provision (e.g. with Keycloak), OIDC / SAML and program mation against Keycloak API You have very good knowledge of Windows Linux and networks, in particular IPSec, TCP/IP, network planning, routing technology and Troubleshooting In the case of safety solutions (VPN and firewall) and their integration into existing system environments

a self-employed and responsible way of working good knowledge of German and English in word and writing This position contains local service trips to our locations within Germany (maximum 10 %).

Real team spirit: teamwork in teams that drive changes – no matter how complicated and extensive projects are Social relevance: We work on solutions that have Gamechanger qualities – in all areas of IT security Individual development: Career is not a standard recipe for us. We develop together and support you with what you need for you to continue The focus is on the human being: the strength lies in our diversity. We respect each other as we are. We are also at the heart of the reconciliation of work, family and private life. Here we have been certified since 2025 Flexible work: Twelve locations in Germany, Mobile Office, Shared-Desk model, Trust work time and flexible part-time models. Here is the right model for everyone Sun, beach or mountains: Work in the EU outland? No problem – You can work remotely within the EU for up to 20 days per year Beautiful Benefits Top: Enjoy bike leasing, corporate fitness program, discounted job ticket, secudog and much more If you would like to work at the forefront of technological development in a climate characterised by trust and fairness, we should get to know each other. .