freelance English-speaking jobs in Bielefeld

TT-Line seeks an IT Network & Server Administrator to administer, operate, and optimize network, server, and cloud infrastructure. Responsibilities include configuring, monitoring, and troubleshooting network devices, managing Windows Server, Active Directory, and cloud services, and providing on-site and remote support.

IU International University seeks a Business Administration professor (m/f/d) for its Berlin campus, starting October 1st, 2026. The position is limited to 2 years and is full-time or part-time. Responsibilities include teaching, developing teaching formats, and supervising students. Applicants must have a doctoral degree in Business Administration or a related field, at least five years of professional experience (including three years outside academia), and English language skills at C1 level.

Senior Customer Success Manager will manage a portfolio of strategic enterprise customers in Germany, ensuring they achieve business value from Configit's solutions. This role involves driving customer adoption, identifying expansion opportunities, and collaborating with cross-functional teams to strengthen customer relationships and gather feedback.

The Faculty of Forest Sciences and Forest Ecology at the University of Göttingen seeks an internationally experienced researcher to prepare and submit a funding proposal for an ERC grant or the Emmy Noether programme. The three-year, fully funded position offers the opportunity to conduct research, engage in scientific exchange, and benefit from the faculty's technical infrastructure and collaborative atmosphere. Applicants must have a PhD in a field relevant to forest sciences and be eligible to apply for an ERC Starting Grant or the Emmy Noether Programme within two years.

Senior Construction Manager to lead the execution of utility-scale renewable energy projects from financial close to commissioning. Responsibilities include contract negotiation, on-site construction management, risk assessment, and claims resolution. Requires proven experience in renewable energy construction management, strong commercial acumen, and fluency in German and English.

Support day-to-day accounting and finance operations. Help identify and implement automation across finance processes. Contribute to improving workflows and AI tooling.

A Postdoctoral Researcher is sought to lead a project investigating the intersection of hematopoietic stem cell homeostasis and long-term immunity. The role involves designing and performing experiments using animal models and human cells, analyzing data, and collaborating within a research team.

The International Max Planck Research School on Earth System Modelling (IMPRS-ESM) offers PhD positions in interdisciplinary climate research. The program provides structured supervision, financial support, and no tuition fees. Applicants must have a Master's degree in a relevant field.

As a Front Desk Associate, you'll be the welcoming face of Mindspace, ensuring smooth daily operations and providing excellent member support. You'll handle front desk duties, assist Community Managers, and contribute to a positive and thriving workspace environment.

Project Manager for building automation deployments in Germany. Manages on-site projects, coordinates timelines, and acts as a liaison between customers, contractors, and the engineering team. Requires fluency in German and English, 2+ years of project management experience, and a solid understanding of building controls systems.

A Postdoctoral Researcher is sought to lead a project investigating the intersection of hematopoietic stem cell homeostasis and long-term immunity. The role involves designing and performing experiments using animal models and human cells, analyzing data, and collaborating within a research team.

The Faculty of Forest Sciences and Forest Ecology at the University of Göttingen seeks excellent early career researchers to prepare and conduct their next research project. The Forst-Talent Program offers a fully-funded three-year position to prepare and submit a funding proposal for an ERC grant or the Emmy Noether programme. The successful candidate will have a PhD in a field relevant to forest sciences and be eligible to apply for an ERC Starting Grant or the Emmy Noether Programme.

Experienced MEP Commercial Lead needed for a flagship hyperscale data center project in Frankfurt. Lead commercial activities for MEP packages, including procurement, subcontract management, cost control, and change management. Proven track record delivering major building services packages for leading main contractors on complex construction projects required.

Senior Scientist – MSAT will lead technology transfers, process scale-up and validation for sterile drug product manufacturing, with expertise in Pre-Filled Syringe (PFS) manufacturing.

The Deutsche Bundesbank seeks two experts to join the Wholesale CBDC team. Responsibilities include analyzing technological developments, designing and testing solutions for digital financial market infrastructures, and communicating technical information to various audiences.

Vice President to manage cross-border M&A and ECM transactions, advise clients, and lead pitches. Requires 7-10 years of experience in M&A/ECM/Corporate Finance, strong modeling skills, and fluency in German and English.

Electrical Master Technician / Electrical Engineer plans, installs, and commissions electrical systems for residential and commercial projects. Responsibilities include building automation, photovoltaic systems, EV charging infrastructure, and battery storage solutions.

Project Manager for Guidewire projects in Munich, Hannover, or Ruhr, Germany. Requires 8+ years' experience in P&C insurance business transformations and Guidewire (Policy, Claims, or APD with Jutro) or comparable solutions. Fluency in German is mandatory.

Senior Cyber Security Architect responsible for group-wide technical cybersecurity architecture across cloud and on-premise environments. Develops security standards, conducts assessments, and drives the Secure Software Development Lifecycle.

A Postdoctoral Researcher is sought to lead a project investigating the intersection of hematopoietic stem cell homeostasis and long-term immunity. The role involves designing and performing experiments using animal models and human cells, analyzing data, and collaborating within a research team.