freelance English-speaking jobs in Bielefeld

Senior Fullstack Software Engineer (Frontend-focused) will build and scale features across two products, mentor developers, and contribute to a sustainable future. Requires strong JavaScript/TypeScript, React, and backend experience.

Senior Product Designer (m/f/d) – Travel Booking & UX will design and improve the booking platform, conduct user research, and champion design systems. Must have 4+ years of B2C product design experience, experience with user research and prototyping, and expertise in Figma design systems.

Provides administrative, organizational, and logistical support to the Executive Office and Senior Management. Manages calendars, schedules, travel arrangements, and meetings. Coordinates communication and information flow within the Executive Office and with stakeholders.

Responsible for detailed planning and operational support of the 1&1 RAN rollout within a region. Key responsibilities include planning O-RAN rollout, optimizing radio network planning, and managing the regional rollout roadmap. Requires several years of experience in RAN planning and rollout, knowledge of modern mobile network architectures, and strong communication skills.

Drive market growth for IFS Loops, an agentic AI platform, by selling autonomous, AI-driven workflows to industrial enterprises. Lead consultative sales conversations, position IFS Loops as a transformative solution, and close 6-7 digit ACV opportunities. Proven sales hunter with experience selling complex enterprise software and AI solutions is required.

Regional Controls Lead will embed Aggreko's Global SOX compliant control framework within the EU North region. This role will lead regional implementation, serve as a liaison for auditors, and prepare reports on control effectiveness. The ideal candidate will have a Qualified Accountant designation and experience in finance, internal control, or internal audit roles.

Aktiv Personal-Service is seeking an Associate System Engineer for a part-time position (80%, 30 hours/week).

The Senior Solution Sales Executive owns pipeline creation, deal execution, and revenue outcomes for ServiceNow's Risk and Security solutions. Responsibilities include developing sales strategies, driving executive relationships, generating pipeline independently, and leading deal execution.

Finance Associate to support accounting tasks, financial reporting, and record-keeping for a growing income-share-agreement portfolio.

Product Specialist needed to serve as technical expert for MICRO and NANO probing solutions. Will act as a key link between R&D, sales, and customers, providing technical support and product expertise. Requires engineering degree, strong communication skills, and ability to travel.

Leads a team providing IT support, endpoint security, and office infrastructure management for Paymentology's global workforce. Implements endpoint hardening, enforces security configurations, and manages onboarding/offboarding processes.

Design, build, and evolve a reliable cloud platform infrastructure using Terraform for AWS and co-located servers. Contribute to platform expansion and implement security best practices. Troubleshoot issues and provide support to internal users.

Junior Project Manager will lead cross-functional projects connecting Consumer Products, Marketing, and PR. Responsibilities include supporting retail activation initiatives, developing strategic partnerships, and acting as a central point of contact for cross-functional initiatives.

Own the end-to-end lifecycle of a core B2B smart metering product, from discovery to partner rollout and optimization. Translate requirements into a roadmap, user stories, and partner capabilities. Collaborate cross-functionally to ensure smooth delivery and reliable partner adoption.

Account Manager responsible for managing defined accounts, acting as the primary customer contact, and coordinating customer activities within AT&S. Requires 5+ years of Account Management experience, commercial/technical education, and strong communication and negotiation skills.

Service Technician provides technical support for corrective and preventive maintenance of PLC/CNC machines. Executes modifications, supports installations, and documents technical issues. Requires 2+ years of experience with PLC/CNC machines and fluency in German and intermediate English.

Coordinate audit teams, prepare audit plans, and monitor budgets. Review fieldwork, produce reports, and maintain client relationships. Requires 5+ years of financial audit experience in international firms, preferably in RE/FSI/Funds/PE with IFRS.

Strategic Global Account Manager will manage assigned accounts, increase sales volume and profitability, and develop sales strategies. Requires a degree in Electrical Engineering or similar field, experience in semiconductor and/or passive component technology, and strong communication and negotiation skills.

Finance Operations Manager supports day-to-day financial operations. Responsibilities include payment reconciliation, customer requests, financial reporting, bookkeeping, contract management, and data accuracy. Requires 2+ years of relevant experience, strong attention to detail, integrity, and a proactive mindset.

Founding Product Engineer to build an AI-powered Superapp for the Apple Ecosystem. Full-stack TypeScript experience (backend + frontend) required. Experience with Fastify or similar frameworks, React, and scalable server infrastructure. Strong understanding of AI coding tools and product development.