2214 ux stepstone germany English-speaking jobs in Berlin

Design, build, and maintain high-throughput, low-latency Rust services for a financial platform. Implement robust financial logic with strict correctness guarantees and optimize performance across CPU, memory, and network.

Head of Growth to build and scale go-to-market engine for open-source, zero-trust networking platform. 3+ years experience scaling self-serve, PLG, or community-driven products within B2B SaaS, developer tools, or security infrastructure. Proven success with growth metrics, funnels, attribution, and experimentation. Experience selling or marketing to DevOps, IT, or security teams.

Data Scientist will design, test, and implement machine learning and AI models to improve customer support. Responsibilities include building evaluation models for AI products, developing data pipelines, and collaborating with cross-functional teams to deliver measurable improvements to customer support experiences.

Working Student will support the Compliance, ISMS Team and Risk Manager functions by developing, maintaining, and improving the Information Security Management System. Responsibilities include supporting the ISMS, coordinating remediation actions, assisting with audits, and maintaining documentation. Requirements include being an enrolled student in a related field, strong interest in ISMS, risk management, and compliance frameworks, and good communication skills.

The Leipzig Cohorts and Trial(ist)s (LeiCoT) program seeks a recognized medical specialist with a strong research background in metabolism, brain/heart, or cancer. The program offers a six-year, fixed-term position with 50% research and 50% clinical work.

Leads the development and maintenance of Photoroom's Rust-based real-time editing engine, including rendering, document models, and collaborative editing. Manages a team of engineers focused on low-latency, high-performance systems for mobile and web platforms. Sets technical direction and ensures engine reliability and performance.

Lead and shape the group-wide accounting function, ensuring accurate and timely financial reporting across all PERGOLUX entities. Manage local accounting teams, oversee financial closings, and prepare annual financial statements. Develop and implement group-wide accounting guidelines and collaborate with external partners.

Lead and coach a team of data scientists and operations research scientists to develop data-driven solutions and platforms for global logistics optimization. Collaborate with machine learning manager, product, and engineering teams to build and deploy machine learning and optimization services. Present actionable insights and influence strategic direction.

Partner Sales Executive will build and manage partner-led business in EMEA. Responsibilities include recruiting, onboarding, and enabling partners to achieve revenue and profitability goals. The role requires proven quota-exceeding experience, strong prospecting skills, and proficiency in various software applications.

Supports regional sales organizations in EMEA and other priority markets, shaping the go-to-market strategy for Battery Energy Storage Systems (BESS). Focuses on market development, commercial structuring, and deal support. Requires 5+ years of experience in the energy, power, or infrastructure sector, preferably with BESS, renewables, or grid technologies.

AI Engineer will design and implement AI/ML pipelines, including LLM-based applications and vector retrieval systems. Responsibilities include building production-grade AI integrations in Python, applying enterprise AI patterns, and collaborating with Data Scientists. Experience with LLMs, GenAI frameworks, and Python is required.

Freelance data annotators review and classify text, images, or videos to train AI. Projects are available on an as-needed basis and compensation varies. Requires a bachelor's degree, 1+ year of professional experience, advanced English proficiency, and strong attention to detail.

Operations / Workforce Manager will oversee daily operations, workforce management, and process improvement. Requires a Bachelor's degree, 4-6 years of experience, and proficiency in project management and productivity software.

DataForce by TransPerfect seeks doctoral-level STEM experts (Physics, Chemistry, Biology) to design complex scientific problems for AI training. You will create "stumper" prompts, test them against LLMs, document their failures, and provide expert solutions. Requires deep subject-matter expertise, scientific reasoning, and proficiency with digital documentation tools.

Senior Sales Manager will drive growth and performance of the wholesale business across key markets. Responsibilities include managing global key accounts, developing wholesale acquisition strategies, leading sales campaigns, and overseeing aftersales processes. Requires 5+ years of experience in wholesale sales management within the fashion, luxury, or premium retail industry.

The Leipzig Cohorts and Trial(ist)s (LeiCoT) program seeks a recognized medical specialist with a strong research background in metabolism, brain/heart, or cancer. The program offers a six-year, fixed-term position with 50% research and 50% clinical work.

Develop and maintain mathematical models and algorithms to optimize courier assignments for a global delivery network. Apply OR techniques, including heuristics and Mixed Integer Linear Programming, to improve system efficiency. Collaborate with team members to integrate OR solutions into existing infrastructure. Analyze large-scale geospatial data to identify optimization opportunities.

Prime Creative seeks a motivated Graphic Design Intern to assist in developing visual concepts for digital and print media. Interns will design layouts for social media, websites, and editorial spreads, supporting branding and campaign work.

Experienced freelance frontend developer needed to reconfigure an existing CMS, implement code adjustments, and improve design alignment. Must have 5+ years of web development experience with Next.js, React, Tailwind, and a headless CMS like Contentful.

Develop strong customer relationships and provide impactful payments insights to help merchants grow. Drive commercial discussions and identify commercial opportunities. Act as a trusted partner, delivering expertise and payment guidance.