Contract Jobs in Lower Saxony, Germany

Video Annotation & Data Labeling Specialist role based in Germany, supporting a partner company's development and improvement of next-generation AI models through high-quality video data annotation. Day-to-day work includes analyzing video content, segmenting sequences, labeling observable actions, verifying AI-generated descriptions, and following precise annotation guidelines.

The CSV Lead role is based in Germany and supports a partner company seeking to lead Computer System Validation and compliance activities across complex pharmaceutical manufacturing environments. Day-to-day, you will provide validation leadership for computerized manufacturing and laboratory systems throughout their full lifecycle, combining hands-on CSV expertise with risk management, documentation oversight, and regulatory compliance guidance.

This freelance contract, listed on behalf of a partner company, seeks a Russian Voice Actor based in Germany to contribute to next-generation AI voice technologies. Day-to-day work involves recording scripted Russian speech, evaluating AI-generated voice outputs for pronunciation, tone, pacing, and naturalness, annotating errors, and providing expert feedback to refine voice-design guidelines.

Gramian Consultancy is hiring a Lead AI Solution Architect for a Big4 Consultancy group serving leading financial institutions on AI-driven transformation, automation, advanced analytics, and financial crime prevention. The role defines the end-to-end technical blueprint for enterprise AI initiatives within the insurance sector, focusing on LLM architecture, orchestration, cloud infrastructure, enterprise integration, security, scalability, and technical governance on AWS. The contractor will wo

Gramian Consultancy is hiring for a Big4 Consultancy client working with leading financial institutions on AI-driven transformation, automation, advanced analytics, and financial crime prevention. The Senior Delivery Lead / Product Owner drives day-to-day execution of enterprise AI initiatives, manages client relationships, and ensures alignment between business priorities and technical delivery.

Suena GmbH is hiring a (Junior) Customer Success Manager in Hamburg to support its green tech startup focused on algorithmic energy trading for energy storage and renewables. You will keep the operational backbone running—ticketing, HubSpot, and the Dock data room—route customer requests internally, support onboarding, and grow into running QBRs with Data Science.

This freelance role with a partner company seeks a Microsoft trainer based in Germany to deliver virtual learning experiences focused on Dynamics 365 Business Central across the UK and European markets. Day-to-day work includes delivering Microsoft Official Curriculum sessions, adapting content to client needs, creating instructional materials, and overseeing virtual lab environments.

The Content and Social Media Manager owns the editorial engine across multiple channels for a growing B2B technology brand, creating content that strengthens brand visibility and generates qualified business opportunities. Day-to-day work includes planning and managing the editorial calendar, writing and editing long-form and short-form content, leading LinkedIn and emerging social channels, developing press releases, and analyzing performance to optimize strategy.

The Brand and Creative Marketing Manager role is based in Germany and operates fully remotely across the EU. As a senior, hands-on creative leader, you will own and evolve the brand’s visual identity across a growing international B2B technology business. Day-to-day work includes shaping creative direction for digital channels, campaigns, product launches, events, sales materials, and employer communications, partnering with marketing, design, agencies, and web teams to turn strategic objectives

The Organizational Change Management (OCM) Lead will lead the people side of complex, technology-enabled business transformations, with a strong focus on SAP and large-scale ERP implementations. Day-to-day work includes shaping change strategies, stakeholder engagement, communications, organizational readiness, training, and adoption measurement across leadership teams, business stakeholders, project teams, and consulting partners, with a key focus on helping manufacturing organizations navigate

This Technical Project Manager (AI Products) role is based in Germany and is fully remote. The position leads AI-enabled products from discovery through launch and iteration, combining delivery leadership with strong business analysis to turn complex business, clinical, and market goals into actionable requirements.

This freelance AI Trainer Project seeks an experienced Portuguese voice professional based in Germany to help shape next-generation AI speech technologies. Day-to-day, you will record scripted Portuguese content, evaluate AI-generated speech for pronunciation, tone, pacing, emotional expression, and regional authenticity, and provide linguistic annotation and expert feedback to improve voice models.

This freelance AI trainer project seeks an experienced Maltese voice professional based in Germany to help shape next-generation AI-powered voice technology. Day-to-day work includes recording high-quality scripted Maltese speech, evaluating and annotating AI-generated speech for linguistic accuracy and naturalness, and providing expert feedback on pronunciation, tone, pacing, emotion, and regional variation.

SPARETECH is a German B2B SaaS startup building AI-powered MRO software to help manufacturing leaders reduce waste and optimize spare parts inventory. As Senior Customer Success Manager, you take end-to-end ownership of an enterprise customer portfolio, acting as a trusted advisor to senior stakeholders in the manufacturing industry.

This senior Solutions & Communications Architect role, based in Germany, designs and launches a secure, unified communications and workflow platform. You will lead architecture from discovery through a working pilot, covering identity, data protection, integrations, approvals, monitoring, and auditability, while working with AI-enabled workflows under strong human oversight.

Costa is hiring a Sales Manager West (m/f/d) to drive brand growth and strategy in the German market. Day-to-day work includes managing and developing travel agency partnerships, executing sales and marketing campaigns, and leading customer events, trainings, and fam trips.

Jobgether is hiring on behalf of a partner company for a Legal Manager (Freelance) based in Germany. The role offers an experienced legal professional the opportunity to take ownership of key legal activities within a growing, technology-driven organization.

Young Talents GmbH is hiring a temporary logistics assistant for the event, trade fair, and venue sector across Dortmund, Duisburg, Bochum, and Essen. The role involves setting up and dismantling events, transporting goods, and handling storage, with flexible hours that fit around study schedules.

Young Talents GmbH in Hamburg seeks a Servicekraft for events, weddings, and gastronomy as a student side job. You will work flexible shifts at popular events and in hospitality, fitting around your university schedule.

Young Talents GmbH in Hamburg is hiring Event-Servicekraft (gn) as a part-time student job for college students. You will support varied events and gastronomy shifts in a young, dynamic team with flexible hours that fit around your studies.