backend developer English-speaking jobs in Hagen

As a Junior Product Designer, you will design and develop on-trend products across multiple categories, including Deco, Tabletop, Kids, and Bathroom. You will collaborate with cross-functional teams and conduct trend research to support collection building.

Support DACH sales teams with deep DEX expertise. Identify opportunities, run discovery, position TeamViewer's DEX value, and accelerate revenue. Coach sellers, support customer engagements, and shape Proof of Value (PoV) cycles.

IT Security Specialist will monitor security events, investigate alerts, and handle incidents. Experience with vulnerability management, SIEM tools, and incident response is required. Strong cybersecurity fundamentals and communication skills are essential.

Founding Engineer to join a small team building a European cloud platform on bare metal hardware. Design, operate, and improve the full stack: compute, Kubernetes, storage, and networking. Write Go and Rust code, mentor a junior engineer, and own production infrastructure.

Customer service representative needed for full-time position. Processes customer emails, provides telephone and written communication, offers expert advice, and solves customer problems. Requires good German and Bulgarian language skills and proficiency in Microsoft Office.

The John F. Kennedy Institute seeks a postdoctoral researcher to lead a Franco-German research project on savings banks and public credit institutions. The position involves constructing a historical dataset, conducting quantitative analyses, and co-authoring publications.

The Director of Business Development is responsible for achieving sales objectives in designated geographic markets. This role identifies customer needs, develops solutions, and obtains customer commitment. The position requires 8+ years of sales experience with at least 5+ years in sales management or equivalent.

As a Data Scientist on the AI Search team, you will develop and implement algorithms to enhance hotel search ranking and relevance across 35+ languages and 55 countries. You will analyze large datasets, design scalable search architectures, and collaborate with cross-functional teams to improve user experience.

The Head of Accounting will oversee the company's accounting function, ensuring accurate financial reporting under German GAAP (HGB), optimizing processes, and collaborating with external partners.

Lead Tech Strategist (f/m/d) Core Platforms in Energy Retail at E.ON Digital Technology. Develops technological capabilities, advises on technology utilization, and leads IT/Tech organizational transformation. Requires a degree in business informatics or management, experience as Head of IT or Head of Core Systems, and expertise in SAP, Salesforce, Kraken, etc.

Senior Risk Engineer specializing in gas turbines for power plants. Provides risk assessment, mitigation, and loss control expertise to Allianz underwriting and clients. Develops risk management programs, conducts site surveys, and tracks technological advancements. Requires a Master's degree in mechanical engineering and 5+ years of experience in the power industry. Fluent German and English required.

We seek a high-level Web Designer to create premium, luxury-standard websites. Design high-end, visually refined websites with a luxury feel, ensuring a complete, polished digital experience.

Principal Consultant – Underground Operations will diagnose operational challenges, analyze production data, and implement solutions to improve underground mining operations. Requires 15-20 years of experience in underground mining operations, mine engineering, or operational improvement roles.

Leads AP, AR, GL, and Fixed Assets teams, shaping financial information flow and ensuring accuracy and control. Owns the full closing cycle under IFRS and Local GAAP, designing and enhancing Accounting processes for a scalable environment. Plays a key role in Finance Transformation, optimizing SAP S/4HANA and improving data flows. Leads Local GAAP statutory audits and supports IFRS Group audits.

The Director Digital Cement Operations will lead Heidelberg Materials' digital cement strategy, translating operational priorities into scalable solutions and ensuring measurable value creation. The role bridges Digital and the Competence Center Cement, driving the global rollout of digital solutions and overseeing product portfolio decisions.

Lead an on-site technical team, ensuring smooth daily Data Center operations and excellent customer relationships. Drive a proactive, safe, and high-performance environment while optimizing resources and continuously improving processes.

Collect and validate in-store data for grocery retailers using a handheld device. Responsibilities include data capture, imagery, and survey completion. Requires fluency in English, app proficiency, and the ability to work independently. Travel to assigned retail locations is required.

The Project Management Officer will support BAMF in designing, developing, and implementing projects. Responsibilities include conducting stakeholder analyses, developing project plans, managing risks, and coordinating project activities.

Leads group for clinical trials and development programs in functional gastrointestinal and gastrointestinal motility disorders. Responsible for clinical development strategy and scientific integrity of trials. Collaborates with cross-functional teams and stakeholders.

The Administrative Specialist & Executive Support provides high-level administrative, operational, and HR support to the Tübingen management team. This role coordinates calendars, meetings, travel, and office operations, serving as a key liaison between Germany and the US. The successful candidate will manage data, support internal communication, and assist with HR processes.