freelance English-speaking jobs in Bielefeld
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IT - Cloud Engineer OT (m/w/d)
- Dr. Kurt Wolff GmbH & Co. KG
- Bielefeld
- February 1
IT Cloud Engineer OT needed for operation, administration, and development of Windows servers and clients in OT environment. Support hybrid infrastructures (on-premises & Microsoft Azure), Active Directory/EntraID, and IT/OT security concepts.
Full-stack developer (m/f/d) for modern retail sales system
- freenet DLS GmbH
- Büdelsdorf
- February 1
Develop and maintain modern front-end and back-end systems using TypeScript, Angular, and AWS Lambda with Node.js. Select and deploy AWS technologies and support the design of new product ideas.
Specialist (m/f/d) IT Application Management Operations
- SBK Siemens-Betriebskrankenkasse
- Berlin
- February 1
Responsible for the technical operation of web and mobile applications, including ensuring availability and functionality. Manage incidents, change and release processes, and collaborate with service providers.
Senior IT-Administrator (m/w/d)
- PVS -Privatärztliche Verrechnungsstelle Mosel-Saar GmbH
- Neunkirchen am Main
- February 1
Senior IT Administrator needed for full-time role. Responsibilities include infrastructure administration, Active Directory management, backup/restore, and support. Requires experience with Windows and Linux, virtualization, and network technologies.
Senior Staff Analog IC Design Engineer
- ams Sensors Germany GmbH
- Jena
- February 1
Develops high performance analog/mixed-signal circuits from concept to production. Performs complex circuit design, simulation, verification, and validation. Provides technical leadership in IC product development and interfaces with customers and stakeholders. Requires a PhD, Master's, or Diplom degree in Electrical Engineering or microelectronics with a focus on analog/mixed-signal IC design and 5+ years of experience. Strong knowledge of Cadence EDA tools and experience in low-noise, low-power analog circuit design is essential. Excellent team player with strong organizational and prioritization skills. Proficiency in English is required.
Global Head of Systems (f/m/d)
- Siemens Energy
- Mülheim
- February 1
Leads a team of experts in commodities, material fields, and manufacturing processes for Siemens Energy's global Systems commodities. Collaborates with Commodity Managers, CVE colleagues, Design Engineers, and SQD colleagues to deliver supply chains, develop technologies, and provide technical expertise.
Project Assistant bwHPC-S5 (m/f/d) at the Communication and Information Center
- Universität Ulm Abteilung III-1 Personalservice
- Ulm
- February 1
The kiz, a central institution at the University of Ulm, seeks a Project Assistant bwHPC-S5 to support scientists in the installation, porting, and migration of applications to the JUSTUS 2 research cluster. The successful candidate will analyze system usage, perform performance optimizations, and advise on resource-efficient system use.
Manager HR Servicecenter Germany d/f/m
- Leica Microsystems
- Innenstadt
- February 1
Manager HR Servicecenter Germany will develop and implement HR processes, act as an employee point of contact, manage payroll and benefits, and oversee compensation processes and HR analytics.
System Administrator Field Service; fixed-term contract until the end of 2026 (m/f/d)
- Undisclosed
- Cologne
- February 1
Provides on-site IT support to schools and businesses. Performs error analysis, installation/configuration, administration, and maintenance of IT infrastructure. Trains IT contacts and contributes to the development of digital products. Requires IT training or experience, proficiency in Windows environments, and a class B driver's license. Fluency in German is required, English is preferred.
Global Brand Manager (f/m/d) Cough & Cold - part-time (50%)
- Schwabe Group
- Germany
- February 1
Dual study program to become a certified administrative IT specialist (m/f/d) (university of applied
- Arbeitgeber aus der Region
- Munich
- February 1
Dual study program to become a certified administrative IT specialist (m/f/d) at Immobilien Freistaat Bayern. The program focuses on IT operations and includes programming, software engineering, IT security, and government economic management.
Senior Clinical Research Associate (CRA) I/II / Senior Klinischer Monitor (m/w/d)
- Thermo Fisher Scientific
- Karlsruhe
- February 1
Senior Clinical Research Associates (CRA) with 2+ years of experience are needed to monitor clinical trials, ensure protocol and regulatory compliance, and manage site documentation. Responsibilities include conducting on-site and remote monitoring visits, assessing data accuracy, and collaborating with investigative sites. Must have a Bachelor's degree in a life sciences field, fluency in English and German, and a valid driver's license.
Logistics employee (m/f/d)
- REICHHART Logistik Gruppe
- Oberpfaffenhofen
- February 1
Senior Technical Manager (f/m/x) Building Retrofit & Decarbonisation
- von Arnim Personalberatung GmbH & Co. KG
- München
- February 1
Senior Technical Manager needed to lead net zero carbon building retrofit and decarbonization initiatives for office, retail, industrial, and residential properties in Europe. Requires experience in delivering net zero carbon programs, energy efficiency projects, and cost-benefit analyses. Must be proficient in energy modeling software and the CRREM tool.
Senior Infrastructure Engineer (gn)
- alcemy GmbH
- Berlin
- February 1
Build, deploy, and maintain cloud-native software infrastructure for a company focused on decarbonizing the cement and concrete industry. Collaborate with engineers to ensure a top-notch AWS-based infrastructure, Kubernetes platform, and development processes. Support application developers and ML specialists with tooling, deployment, CI/CD, and other infrastructure-related needs. Automate and optimize infrastructure using Python or Go. Design for high security, reliability, and availability, including logging and monitoring. Mentor and guide other engineers.
Master Data Project Manager (f/m/x)
- Carl Zeiss AG
- Lindach
- February 1
Commissioning Manager for HVDC systems (m/f/d)-100% site based
- GE Vernova
- Travenhorst
- February 1
Commissioning Manager for HVDC systems leads all commissioning activities for defined projects, ensuring compliance with GE standards and client satisfaction. The role involves coordinating with subcontractors, preparing documentation, and managing on-site commissioning teams. Requires experience in commissioning HVDC systems, substation projects, and international travel.
IT Administrator - Networks & Security (m/f/d)
- KWD Kupplungswerk Dresden AG
- Dresden
- February 1
IT Administrator responsible for maintaining and documenting the company network, setting up hardware and software, and supporting the integration of new IT applications.
Project and Process Management Employee (m/f/d)
- Hochschule Hamm-Lippstadt
- Lippstadt
- February 1
Supports the newly established portfolio board by preparing and accompanying meetings, creating reports, and maintaining the portfolio. Models business processes in BIC Process Design software. Advises and collaborates with internal stakeholders.
System Administrator System Management (f/m/d)
- Zentraler IT-Betrieb Niedersächsische Justiz
- Celle
- February 1
System Administrator will operate parts of the IT infrastructure used in the Lower Saxony judiciary based on solutions from Microsoft, Netapp, FSAS, RedHat, Citrix, Veeam, and others. Participate in IT projects, including the introduction of new technologies, modernization of existing infrastructures, and implementation of automation and cloud solutions.


























