DevOps Engineer for Multi-Tenant Open Source Magazine System (OJS) (m/f/d)

The Technical Information Library (TIB) is a foundation of public law of the State of Lower Saxony. With around 600 employees and an budget of around 60 million euros, it is one of the largest information infrastructure facilities in Germany. As a German Central Library of Technology and Natural Sciences, our pioneering services ensure the infrastructural requirements of high-quality information and literature supply for research in science and industry. Our services as a university library ensure local care for the Leibniz Universität Hannover. The TIB, programme area B, user and information services are looking for the publication services sector at the earliest possible date: DevOps Engineer for Mandant Open Source Journal System (OJS)(m/w/d) The body is limited to three years. The weekly working time is 39.8 hours (full time). In principle, the workplace is part-time. The grouping takes place in the pay group 11 TV-L if the personal conditions exist. Within the framework of an internal project, the Open Journal Systems (OJS) software already used in the TIB is provided and tested for further purposes. The web application is used for the publication of scientific journals and conference reports and is intended to be provided in a reproducible and safe manner for multi-mandant operation.

Requirement analysis for the multi-mandant operation of OJS Systematic collection and assessment of the requirements for OJS-based and other digital publication services Analysis of existing platforms in terms of architecture, operation and technical boundaries deriving the requirements for multi-mandant operation taking into account technical, organisational and legal framework conditions, in particular IT security, data protection and integration in existing infrastructures (in and outside the TIB)

Architecture and Service Conception for Multi-Mandant Operation Design of a scalable deployment and operating architecture including suitable deployment models, client insulation and resource allocation Conception of automation, scaling and client-specific configuration including the standardized provision of new clients Determination of necessary adjustments and developments of OJS

Technical implementation Containerization of the application components as well as development and testing of reproducible deployments for a prototypical multi-antenna system architecture Implementation of multiple-specific configuration and extension mechanisms as well as integration of existing systems and interfaces in the scientific publication environment design, implementation and further development of CI/CD pipelines including automated testing and release strategies; Ensuring code quality through tests and code reviews

Implementation and further development of pilot operation Operation and further development of server, container and deployment infrastructure for development, testing and productive environments Ensuring stable, secure and efficient application operation including IT security, data protection, monitoring, error analysis and troubleshooting Technical support of pilot users:inside and analysis of their feedback and own performance measurements; deriving and implementing technical improvements Working on the further development of the DevOps and Container Strategy

Evaluation, documentation and safeguarding sustainability Assessment of the technical and organisational solutions tested in the pilot plant and the determination and prioritization of further optimization potentials Creation and maintenance of architectural, deployment and operational documentation including technical processes and internal knowledge documentation Preparation of results in a results report and knowledge transfer to internal stakeholders

completed university studies (Bachelor/FH diploma or equivalent), preferably in computer science or a related field OR an at least three years relevant professional experience comprehensive, proven experience in design, construction, operation and development of complex digital services practical experience in operating Linux servers and web applications as well as knowledge in IT security, monitoring and error analysis Experience with automation and deployment tools as well as knowledge in container technologies such as Podman or Docker sound knowledge of the development, adaptation and configuration of web applications independent, targeted and solution-oriented mode of operation and ability to implement complex and changing requirements into technical solutions Ability to independently analyze and solve complex technical issues strong communication and cooperation capability in interdisciplinary teams and with non-technical personnel good knowledge of German and English in word and writing (at least B2) Knowledge of scientific publication processes or willingness to acquire them Required qualifications deepened knowledge of modern software development, such as web technologies, distributed systems or databases Experience with Ansible, GitLab CI/CD or comparable tools as well as the design and implementation of CI/CD processes Basic knowledge of Kubernetes or comparable orchestration platforms Knowledge of PHP

a common-good workplace in the public service on the basis of the TV-L with a remuneration according to the pay group 11 TV-L, provided that the personal requirements for the grouping are met. a special payment at the end of the year and 30 days holiday a year at a five-day week. a flexible workplace in time and space with offers for the reconciliation of work and family, such as mobile work and flexible working time models. a modern workplace in a central location of Hanover with a collegial, attractive and versatile work environment. an employer with a wide range of continuing and continuing training, occupational health promotion and pension provision for the public service (VBL). Employee discount in the students of the Studentenwerk Hannover as well as the possibility to use the versatile offers of the University Sports Hannover. In the field of publication services, employees work: in various fields of activity, on the realization of free access to scientific information (Open Access). This is done by consulting and providing information for various user groups and the operation of technical infrastructures for scientific publishing. The TIB supports you in your professional and personal training plans and provides space for collegial exchange across project and sector boundaries. We appreciate the diversity of our employees and value an open, collegial and error-friendly working environment. .