freelance English-speaking jobs in Bielefeld

This company-building COO role operationalizes a fast-growing business into a scalable organization. You will build structures, processes, and teams to drive execution across customer success, commercial operations, and product alignment.

As part of the establishment of a standalone tax function, you will build and embed robust transfer pricing governance for the Agricultural Solutions business. You will maintain the intercompany transfer pricing governance framework, support the selection and management of transfer pricing IT systems, and monitor ICTP results. You will collaborate with internal stakeholders to coordinate master and local file preparation and ensure audit readiness.

As Business Controller for IT and R&D, you will partner with leadership teams, driving performance, enabling strategic decisions, and shaping the future of IT and R&D. You will own budgeting, forecasting, and long-term planning, prepare monthly closings, and evaluate business performance. You will also develop Speira's IT and R&D strategy, assess business cases, and lead projects to optimize business results.

PhD Student in Translational Cancer Biology to investigate molecular mechanisms driving small cell lung cancer progression. Focus involves molecular biology, functional genomics, and analyzing multi-omics datasets.

For our secondary school in Heilbronn we are looking for a Teacher of Physics (German & English) (Part-time or full-time)

Experienced (Senior) Portfolio Manager needed for Acquisition Finance at an established commercial bank. Responsibilities include credit assessment, cash flow modeling, and managing a portfolio of ~150 transactions totaling EUR 2.5bn. Requires 3+ years in acquisition finance execution.

Warehouse Associate role involves selecting, packing, and shipping customer orders. Duties include inventory handling, loading trucks, and operating equipment. Candidates must be 18+, able to lift up to 15kg, and proficient in German, English, or Arabic.

Experienced Site Manager needed to oversee a critical data center facility during a major refurbishment. Responsibilities include leading a team of 12 engineers, managing daily operations, and ensuring compliance. Requires strong M&E and HV experience.

Senior Data Scientist for Logistics takes technical ownership of building data-driven solutions for real-time operational decisions. Drive strategy, model development, and production deployment using ML, Python, and SQL.

Consultant to support a commercial strategy initiative for a global pharmaceutical company. Responsibilities include task ownership, project module management, presenting findings, and implementing solutions. Requires 2-7 years of experience, with prior work at McKinsey, BCG, or Bain.

Lead a regional Professional Services organization for a growing fintech business. This hands-on role involves owning P&L, overseeing project delivery, and leading consultants, architects, and managers. Requires experience in enterprise software/SaaS and native German/fluent English.

Lead a team of 10 software and security architects, harmonizing architecture processes and driving the roadmap for cloud, security, and AI-native architectures. Modernize legacy systems using AI tools and establish AI tooling as a best practice.

Game Analyst needed to turn LiveOps and monetization questions into measurable actions. Responsibilities include analyzing event cycles, evaluating game economies, and co-owning A/B tests. Requires 2+ years in F2P product/game analytics with strong SQL skills.

Designs, develops, and implements control systems for semi-automated to fully automated assembly equipment used in co-packaged optics assembly. Collaborates with internal and external teams to align and transfer product and process requirements. Runs assembly processes and pilot lines for new products.

Shape security architecture for ParityOS as a Cybersecurity & DevOps Engineer. Build secure CI/CD pipelines, automate security controls, and harden cloud/infrastructure. Requires hands-on experience in cybersecurity and DevOps.

Leads all financial aspects of a €30m B2B SaaS business undergoing a transition to a scalable, recurring revenue model. Develops financial planning, forecasting, and reporting, supports SaaS model implementation, and drives commercial insight. Builds and leads a finance team, partners with Sales, Product, and Operations, and acts as a key interface to investors.

Develop deep learning and generative models for analyzing and synthesizing sonar data. Tasks include planning measurement campaigns and integrating results into a maritime situational awareness system. Requires a relevant technical degree and computer vision experience.

Lead the launch and growth of a new office for Antal International in virgin markets. Requires 5–10+ years in a managerial or specialist role, strong networking skills, and entrepreneurial drive.

Investment Banking Senior Vice Presidents are needed to train an AI language model on professional presentation and slide deck tasks. Candidates require 6+ years in investment banking, owning client materials end-to-end, and expert PowerPoint skills.

Lead FZS's global efforts to combat illegal gold mining in and around protected areas by driving policy change, influencing global markets, and strengthening international partnerships.