javascript English-speaking jobs in Bielefeld

Senior System Engineer for Exploration, In Space Transportation and Servicing drives early-phase satellite mission shaping. Responsibilities include leading system engineering, defining architecture, and managing technical risks for space missions. Requires a Master's in aerospace engineering and 5+ years in space system engineering.

Support strategic global customers by managing inside sales activities, driving revenue growth, and identifying opportunities. Requires fluency in German and English, and experience in a customer-facing sales role.

Lead global corporate strategy projects to define and implement company strategy. Drive growth, profitability, and competitive positioning through cross-functional teams. Requires a Master's/MBA and 4+ years in strategy consulting or corporate strategy.

Manage electrical design and TSO/DSO relations for renewable energy projects. Responsibilities include technical support, infrastructure design, and standardization. Requires 7+ years in Wind/Solar PV/BESS and HV infrastructure.

Experienced Tax Director sought for DACH region. Oversees tax compliance, reporting, and advisory activities across Germany, Austria, and Switzerland. Requires 15+ years of experience in corporate tax, including direct taxes, VAT, transfer pricing, and international tax frameworks.

Manages a EUR 1 billion investment portfolio, designs hedging strategies for commodities and currencies, and reports to the Head of Group Finance & Support. Develops and owns the annual investment strategy, manages asset allocation, and selects external asset managers. Establishes and develops a risk reporting framework, ensuring compliance with investment guidelines and regulatory requirements.

Beam AI is seeking a Sales Development Representative to build the top of our pipeline. You will research target accounts, engage senior stakeholders, and qualify inbound leads. This role involves partnering with Account Executives and GTM Leads to create and progress strategic opportunities.

Experienced Chief Financial Officer needed to lead financial strategy, transformation, and performance across Finance, Controlling, Procurement, and IT for an industrial manufacturer. Requires a Chartered Accountant qualification and 10+ years in senior finance leadership.

PhD position in Statistical Mechanics of Noisy Quantum Devices. Analyze many-body dynamics of quantum circuits, mapping them to statistical-mechanics models. Characterize information protection transitions using analytical and numerical methods.

Administrative Assistant Germany Part-Time, 20–30 Hours per Week | 12-Month Contract The Opportunity We are recruiting on behalf of our client for an experienced and highly organised Administrative Assistant to provide comprehensive support to a busy professional team of up to 20 people.

Advantest seeks an Analog & Power Electronics Design Engineer to develop power and precision measurement electronics for test systems. Responsibilities include specification, modeling, implementation, verification, and testing of electronic circuits. The ideal candidate will have a degree in Electrical Engineering, experience in Analog & Power hardware design, and knowledge of power modeling and measurement techniques.

Lead global legal product strategy, aligning risk frameworks with the product roadmap. Provide counsel on international consumer law, e-commerce, and digital platform requirements while setting vision for an AI-first legal function.

ThirtyEight Capital seeks entrepreneurial individuals to co-found businesses in the energy and climate space. This involves identifying, validating, and potentially building scalable and profitable ventures from scratch. Areas of focus include heating & heat pump ecosystems, energy financing models, and energy optimization. Ideal candidates possess entrepreneurial potential, operational experience, and a strong understanding of energy-related systems.

Maintenance Mechanic develops and achieves planned equipment maintenance. Responsibilities include training staff, root cause analysis, and updating technical specifications. Requires 5+ years in a technical role with knowledge of electric, hydraulic, pneumatic, and automation.

RobCo seeks a founding General Counsel to build and lead the legal function for this AI-powered robotics company. This role will establish legal operations infrastructure, manage external counsel, and serve as a trusted advisor to the CEO and CFO. Responsibilities include building the deal desk function, negotiating commercial contracts, overseeing corporate entity structuring, and advising on employment and compliance matters.

Intern Team Assistant role supporting cross-departmental communication, meeting management, and administrative tasks for the Heisenberg Research Center. Requires strong communication skills and a willingness to learn office assistance functions.

Develop industry-leading creative solutions for brand image across 2D, retail, digital, and motion. Lead creative strategies, direct resources, and create 3D concepts. Requires 8+ years in Sporting Goods/Fashion or Design.

Lead technical hire for an E-Mobility startup, responsible for turning product vision into scalable reality. Requires deep backend/DevOps expertise, team scaling experience, and AI-native thinking. Must drive structured execution.

Manage core electrical energy activities across Europe, monitoring markets and advising on procurement strategies. Support industrial projects, manage contracts, and monitor energy risks. Requires a relevant university degree and experience in energy procurement.

Logenta AI seeks a Co-Founder & CTO to build a scalable decision intelligence platform for logistics operations. The CTO will define the technical foundation, build the first product version, and lead the engineering team. Must have expertise in data infrastructure, AI agents, and early-stage startup environments.