developer English-speaking jobs in Jena

Junior Sales Manager (m/f/d) needed to manage sales of Petrochemical products in the B2B market. Responsibilities include contract negotiations, customer relationship management, and sales strategy development. Requires a degree in business/economics, chemistry, or a related field, plus one year of sales experience. Excellent communication and teamwork skills are essential.

Senior Digital ASIC Design Engineer will develop and implement digital modules and subsystems for Advantest's semiconductor testing solutions. Responsibilities include requirements gathering, architecture development, RTL coding, verification, and collaboration with cross-functional teams.

As a Sales & Marketing Intern, you will support the planning and execution of marketing campaigns, create marketing materials, analyze market trends, and assist with event management. You will also maintain customer data, prepare reports, and collaborate with various departments.

Implementation/Client Onboarding Specialist for veterinary customers in Germany, Austria, and Switzerland. Manage projects from scoping to go-live, deliver training, and configure software. Fluency in German and English required.

Assemble food boxes according to specifications. Work in order picking, warehouse, and quality control. Maintain a clean and organized work area.

The Tactical Buyer provides procurement support for global and local projects, including new product/equipment developments and plant investments. Responsibilities include sourcing materials, negotiating contracts, managing supplier relationships, and coordinating with project managers.

Manage and develop a hardware test laboratory team, establishing infrastructure and system-level testing capabilities. Define, introduce, and maintain test strategies, methods, and concepts. Plan, coordinate, and execute hardware and system-level tests, including software. Evaluate, document, and release test results. Ensure compliance with internal processes, quality standards, and applicable norms. Act as the central interface between the test lab and various teams and stakeholders.

Senior employment lawyer to provide advice on complex, cross-functional, and multi-jurisdictional transformation projects. Manage legal and employee relations risk, and support delivery against strategic people priorities.

As a Commis de Cuisine at NENI, you will ensure smooth kitchen operations, maintain cleanliness, and contribute to a positive guest experience.

Facility Manager responsible for managing facility processes, service providers, and energy performance. Drives continuous improvement plans and supports building security and HSE activities. Requires a technical or commercial degree and experience in facility management or a similar operational role.

PhD position in machine learning and computer simulations for materials and process design. Develop novel machine learning models to enhance or replace computational engineering methods.

Provides dedicated VIP support for the Executive Board and other key stakeholders, handles operational tickets, and delivers professional IT support. Responsible for IT infrastructure, Microsoft Teams Rooms, and end device management. Requires several years of relevant experience, a degree in Computer Science or a related field, and fluency in German and English.

As a Quant & Engineering Intern, you will develop quantitative analyses, models, and prototypes to solve real trading problems for clients in the LNG and crude oil markets. You will use AI tools, Python, and our optimization software to build solutions and interact directly with traders.

Investment Banking Associate (Level 1 or 2) supports M&A, financing transactions, and financial modeling. Prepares presentations, analyzes financial statements, and mentors analysts. Requires a Bachelor's Degree and 3+ years of Investment Banking experience or equivalent.

Privatal seeks a Group CFO for a mid-market private equity fund in the healthcare service sector. The CFO will partner with the CEO to drive a business transformation and build a best-in-class finance function.

Phagestack, a biotech startup, seeks a BTA, CTA, or Biologielaborant:in to perform microbiology and molecular biology lab work. Responsibilities include bacterial cultivation, phage isolation, and applying molecular biology techniques. Must have hands-on experience in sterile lab environments and a structured work style. Fluent in German or English required.

DYWIDAG seeks a Civil Engineer / Construction Technician to manage wind tower projects in Northern Germany. Responsibilities include project preparation, scheduling, resource planning, cost monitoring, and customer coordination. The ideal candidate has a civil engineering degree or equivalent, experience in construction, and strong communication skills.

Develop, optimize, and industrialize manufacturing processes for high-performance composite components. Transfer prototypes into stable pre-series and series production. Collaborate with R&D, quality, and production teams.

Junior Operations Securities Manager will own daily reconciliation, settlement, and security transaction processes. Support analysis of corporate action events, communicate with external partners, and assist in developing scalable processes. Requires experience in securities services, brokerage, or asset management and fluency in German and English.

As Personal Assistant to the CEO, you will manage the CEO office, coordinate calendar and inbox management, and handle travel arrangements. You will also organize meetings, conferences, and events, and act as a central point of contact for internal and external inquiries.