freelance English-speaking jobs in Bielefeld

As a System Integration Engineer, you will ensure seamless product integration, robust test processes, and high quality operational performance. You will own KPI management, test equipment strategy, and NPI readiness while driving continuous improvement initiatives.

Senior leader to drive growth of Power & Energy Storage (BESS) business across the DACH region. Focus on grid-scale storage and power markets, working with investors, utilities, and developers. Build and lead a Berlin-based team, delivering strategic advisory, commercial analysis, and market-leading modeling/due diligence.

Global Service Manager to develop and implement global service strategies, oversee international service operations, and drive customer satisfaction. Responsible for service business plan, pricing strategy, and budget management. Requires experience building and running global service businesses, strong leadership, and communication skills.

Bild-Expressen GmbH seeks skilled photographers to cover sports assignments in the Koblenz/Bonn/Köln/Frankfurt and Hannover/Hamburg regions. Duties include photographing player and team portraits outdoors and in studios. Applicants must have strong photography skills, be responsible and organized, and possess excellent social skills. Must have a German driver's license and access to a car.

Senior Analog/Mixed Signal RF Layout Engineer needed for a semiconductor project in Germany. Requires 7-8 years of experience in full custom layout design, expertise in lower technology nodes (6nm or below), and proficiency in Cadence Virtuoso and Calibre. Responsibilities include developing layouts, ensuring quality, and resolving DRC/LVS/ERC/antenna checks.

Supports the implementation and coordination of AI startup partnerships and Tech Fair exhibitors. Assists with onboarding, operational questions, booth logistics, and on-site support during the event.

DevOps Specialist (CI/CD & DevSecOps) with 12-15 years of experience building and securing enterprise-grade delivery pipelines on cloud platforms (AWS/Azure/GCP). Expertise in ART CI/CD, Jenkins/Concourse, Git/Bitbucket, Maven/Gradle, Artifactory/JFrog, SonarQube, Terraform/Ansible, Prometheus, Grafana, ELK Stack, and Python/Bash/PowerShell. Strong DevSecOps experience including FOSS scanning, vulnerability detection, and secure SDLC automation. Proficiency with Agile/SAFe and JIRA/Confluence.

The W2 Professorship for AI Infrastructure (f/m/d) at the Faculty of Computer Science and Business Information Systems focuses on applied research and teaching in AI infrastructure. Responsibilities include establishing a nationally and internationally visible research group, teaching undergraduate and graduate courses in AI, and collaborating with other researchers on interdisciplinary AI projects.

Lead global revenue strategy for a mid-sized SaaS client, unifying sales, marketing, customer success, and professional services. Define and execute a global revenue strategy aligned with SaaS acceleration, product evolution, and market expansion goals.

Own and operate the commercial LiveOps strategy, including pricing frameworks, promotional cadence, and execution of a data-driven commercial calendar. Define and evolve the monetization roadmap, scaling subscriptions and exploring consumables, repeat purchase loops, and long-term ARPPU growth systems. Lead complex, cross-functional monetization initiatives across placements, clients, and geographies.

Founders' Associate to support leadership team with strategic and daily tasks. Manage investor relations, communication, operations, and finance administration. Requires strong German and English communication, project management, and administrative skills.

Operating Partner will assume full operational responsibility for a multi-site distribution business post-acquisition, focusing on restructuring and performance improvement. Responsibilities include cost optimization, branch network review, and establishment of independent finance, IT, and procurement structures. Proven leadership in multi-site distribution, turnaround experience, and financial acumen are required.

Shape and evolve VBA's communication strategy, execute day-to-day communications, and develop messaging for diverse stakeholders. Analyze target audiences, improve engagement, and contribute to VBA's position in the impact and sustainability ecosystem.

VoIP Engineer to support and maintain VoIP and telephony systems, providing customer support and participating in system upgrades.

Lead AI strategy and product development for a leading German VC fund's portfolio of startups. Experience leading technology teams, AI, and software fundamentals required. Fluent German & English.

Senior Thermal Process Engineer leads turnkey distillation solution design, from customer discovery to performance validation. Expertise in distillation engineering, mass transfer, and internals/packing is required. The role involves process modeling, automation strategy, and customer-facing technical leadership.

Provides end-to-end technical support for desktop and laptop systems, including troubleshooting, IMAC activities, and software management. Administers approved software installations, updates, and security patching. Offers remote and deskside support for various applications and devices. Ensures compliance with security protocols and IT policies. Documents incident resolution and maintains technical guides.

DevOps Engineer to maintain, automate, and enhance production environments supporting trading systems. Requires experience in energy, commodities, power trading, or financial trading.

Staff Systems Engineer with technical ownership in medical device R&D. Develop PLC software (IEC 61131), design electrical assemblies, and contribute to system architecture.

Field Service Engineer needed for start-up and commissioning of solar inverters at photovoltaic solar plants. Responsibilities include diagnosing and repairing faulty inverters, completing field reports, and maintaining company property. Requires 3+ years of experience in similar environments and training in electricity and electronics. Travel to solar plants is required (approximately 80% of the time).