AI/ML Engineer in Berlin

airappsBerlin Metropolitain Area

On-site Full-time

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Experience Level

Entry Level

Qualifications

The ideal candidate will possess a background in computer science or a related field, with hands-on experience in machine learning frameworks such as TensorFlow or PyTorch. Strong programming skills in Python or Java are essential, along with familiarity in data analysis and statistical modeling. A proactive mindset and the ability to work collaboratively in a team environment are crucial for success.

About the job

airapps is looking for an AI/ML Engineer to help design and build machine learning models. This role works closely with a skilled team focused on using technology to improve processes and outcomes.

Location

Berlin Metropolitan Area

About airapps

At airapps, we are dedicated to transforming industries through artificial intelligence and machine learning. Located in the heart of Berlin, our team is composed of forward-thinking professionals who thrive on innovation and creativity. We foster a culture of continuous learning and encourage our employees to push the boundaries of what is possible.

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Senior AI Engineer at Cosuno | Berlin/Remote

Cosuno

Full-time|Remote|Berlin/Remote

Role Overview Cosuno is looking for a Senior AI Engineer to join the AI team, working from Berlin or remotely. This role focuses on building and refining the intelligent systems that drive Cosuno’s platform for the construction industry. What You Will Do AI Agent Development: Design and improve intelligent agent systems that handle the complex tendering proc…

Apr 17, 2026

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AI Automation Engineer at cosuno | Berlin/Remote

cosuno

Full-time|Remote|Berlin/Remote

Your MissionAs the AI Automation Engineer at Cosuno, you will spearhead our efforts to enhance operational efficiency. Your expertise in our automation stack will enable you to collaborate with various teams across the organization to identify, design, and implement AI-driven workflows that revolutionize their processes. Instead of developing proprietary models from scratch, you will utilize cutting-edge existing models and reasoning chains to address critical business challenges.Working alongside the product team, you will engage closely with the CEO and CTO to ensure that all automation solutions are technically robust and aligned with our core infrastructure. This role is execution-focused, with success defined by the speed and reliability of the modular automation platform you develop.Key ResponsibilitiesDiscovery & Prioritization: Collaborate with Finance, Sales, Operations, and Product teams to uncover high-return automation opportunities and assess them based on their business impact versus technical feasibility.Workflow Engineering: Architect, prototype, and implement comprehensive AI workflows by developing our orchestration stack (e.g., n8n, Vector Databases) and integrating various endpoints via APIs to establish a universal memory for Cosuno.Scaling & Modularity: Create solutions that are modular and adaptable across departments, avoiding redundancy for new requests.Enablement & Governance: Set AI guardrails while empowering AI advocates in other departments to utilize the automations effectively.Monitoring & Optimization: Define and monitor success metrics (ROI, time savings, reliability) to guarantee that our automations continuously provide value.

Feb 28, 2026

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Senior Product Manager at cosuno | Berlin/Remote

cosuno

Full-time|Remote|Berlin/Remote

Role Overview cosuno is looking for a Senior Product Manager to help guide the direction of its product portfolio. This role works closely with teams across the company to set product vision and strategy. The Senior Product Manager ensures that development stays aligned with customer needs and steers products from initial idea through to launch. Location This position is based in Berlin or can be performed remotely.

Apr 15, 2026

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Customer Support Agent at Cosuno | Berlin

Cosuno

Full-time|Hybrid|Berlin (Hybrid)

Role Overview Cosuno is looking for a Customer Support Agent to join the team in Berlin (hybrid). This role serves as the main point of contact for users, translating technical questions into practical answers and helping customers get the most from the Cosuno platform. The position combines direct customer support with a key role in shaping internal processes by sharing insights from customer interactions. What You Will Do Omnichannel Support: Handle customer inquiries across email, phone, and chat. Respond quickly and clearly, aiming for solutions that last. Platform Guidance: Share product knowledge and help customers onboard smoothly. Make sure users understand features and can use the platform effectively. Documentation & Knowledge Base: Record all customer interactions in Salesforce. Help update and expand the internal knowledge base to support scalable service. Team Collaboration: Act as a link between customers, Sales, and Product teams. Gather feedback and spot opportunities to improve Cosuno’s software. Process Improvement: Suggest and help implement new ideas to make the support team more efficient and effective. What We Look For Experience: Previous work in customer service, ideally with digital products or platforms.

Apr 17, 2026

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Customer Success Manager at Cosuno | Berlin

Cosuno

Full-time|Hybrid|Berlin (Hybrid)

Cosuno's subcontractor segment is experiencing rapid growth, and to ensure sustainable success, we are establishing a dedicated Customer Success structure tailored to this market. As a Customer Success Manager, you will be among the pioneers shaping this area and influencing its long-term strategic direction.Your role involves guiding our subcontractors post-contract signing, facilitating a thorough onboarding process, analyzing product usage, identifying potential risks early, and actively developing accounts. You will ensure that our clients not only understand the product but achieve tangible, quantifiable results.We believe in teamwork: you will not only handle operational tasks but also contribute to building processes and structures. You will experiment with new strategies, assess their effectiveness, and lay the groundwork for enduring Customer Success in the subcontractor segment.Address customer inquiries via email, phone, or chat in a swift, empathetic, and solutions-oriented manner.Create analyses and reports on customer usage behavior to identify risks or upsell opportunities and initiate targeted actions.Collaborate closely with the Sales & Product teams.Work closely with Sales and Product departments to relay customer feedback and uncover potential areas for improvement.Deliver customized onboarding sessions and assist with questions about usage, setup, or functionalities of our platform.Enhance customer development through training sessions, webinars, and structured enablement content.QualificationsMinimum of 2 years of experience in Customer Success, Account Management, or a similar role, preferably within a B2B SaaS and Sales environment.A passion for helping others, combined with an empathetic yet goal-oriented approach.Structured, reliable, and capable of prioritizing tasks independently.Excellent communication skills for direct customer interactions and during workshops or webinars.Data-driven, with proficiency in working with KPIs to interpret usage data and make customer success measurable.A strong initiative to test new methods, critically evaluate what works, and actively build processes from the ground up.

Mar 1, 2026

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Senior Full Stack Developer (TypeScript) at cosuno | Berlin/Remote

cosuno

Full-time|Remote|Berlin/Remote

Your MissionJoin our dynamic Engineering team as a Senior Full Stack Developer, where you will not only craft code but also tackle intricate challenges and take ownership of features from inception to deployment. Your contributions will directly influence a product that empowers thousands of construction professionals to shape the world around us.In your initial months, you will:Create and implement innovative AI features, including our newly launched AI agent for editing Bill of Quantities (BoQs) and automated AI bidder recommendations.Work collaboratively with product managers and designers to refine the user experience and set the technical direction of our core offerings.Design and construct modular packages and services within our monorepo to enhance the structure and maintainability of our codebase.Our Engineering CultureAt cosuno, we cultivate a calm, collaborative, and productive engineering atmosphere. We empower our engineers with the autonomy to excel in their work. Our development philosophy includes:Agile & Fast-Paced: We practice trunk-based development and implement daily releases to deliver value quickly to our users.Quality by Default: A thorough Cypress end-to-end testing suite and strict adherence to typing, linting, and formatting standards ensure our codebase remains clean and maintainable.DevOps Mindset: Our efficient CI/CD pipeline deploys to AWS using Kubernetes, with infrastructure managed as code via Terraform.Collaboration & Transparency: We prioritize open dialogue, constructive code reviews, and a culture where the best idea prevails, regardless of its source.Your ProfileWe seek a passionate and experienced engineer eager to build exceptional products. You will thrive in this role if you possess:Extensive professional experience in developing, deploying, and maintaining complex web applications using TypeScript.In-depth knowledge of Node.js for backend development and strong proficiency in React for frontend tasks.A practical problem-solving mindset with a high sense of ownership, comfortable driving projects independently.Experience in collaborative, agile product teams.Excellent communication skills in English.Bonus Points For:Experience with cloud services, DevOps practices, or machine learning frameworks.

Mar 1, 2026

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Senior Product Designer at cosuno | Berlin/Remote

cosuno

Full-time|Remote|Berlin/Remote

Your MissionLead the comprehensive product design process, tackling well-defined challenges in partnership with the Product Team — from initial concept and prototype testing to delivering polished visual designs ready for launch.Collaborate closely with our current Product Designer to refine our design language and ensure a seamless user experience across the platform.Engage directly with our product and engineering teams to pinpoint high-impact UX opportunities and implement efficient, technically feasible solutions.Transform ideas into high-fidelity designs while upholding and enhancing our scalable design system in Figma.Create clear and engaging UI copy that guides users through the product experience.Your ProfileMust-Have Qualifications:3–5 years of experience as a Product Designer within a reputable B2B SaaS company or a rapidly growing SaaS startup.Demonstrated ability to design intricate, desktop-first B2B web applications from end to end, with a portfolio showcasing your process from problem identification to interaction design and handoff.Strong product mindset: adept at crafting practical “80/20” solutions that balance user needs, technical limitations, and business objectives.Expert-level proficiency in Figma, with experience collaborating with fellow designers in shared environments, including component libraries and design systems.Self-motivated and results-driven, capable of working autonomously while clearly communicating trade-offs and limitations.Fluent in German and English.Nice-to-Have Qualifications:Experience with AI-assisted coding tools (such as Claude code, cursor, etc.) to develop realistic, functional prototypes.Basic knowledge of HTML/CSS to implement minor enhancements to the product or website independently.Experience in UX copywriting.Why Join UsContribute to a product that addresses real-world challenges in the construction industry and witness the impact of your work on actual users.Join a diverse, collaborative, and open-minded team where your ideas are truly valued.

Apr 13, 2026

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Senior Backend Engineer at reliant-ai | Berlin

reliant-ai

Full-time|On-site|Berlin, Berlin, Germany

About the RoleWe are on the lookout for two highly skilled backend engineers to join our dynamic team in Berlin. You will be instrumental in advancing the development and implementation of our technology, enhancing our capacity to create core backend functionalities, and empowering other teams to utilize this backend for their projects.If you have a passion for creating exceptional products, thrive in a fast-paced environment, and are eager to contribute to the success of an ambitious startup, this is the perfect opportunity for you.Our Tech Stack:Python / FastAPIPostgreSQL / MongoDB / ElasticCloud LLM providers + bare metal GPUsGCPAs an early team member, you will assume significant responsibilities from day one, with the chance to influence our technological architecture and infrastructure.Join one of the most ambitious AI companies today, collaborating with a world-class team of experts in their fields, and experience an incredibly stimulating work environment. In This Role You WillLead the delivery of complex projects, coordinating with cross-functional teams, and ensuring timely completion of essential components.Develop a deep understanding of Reliant's vision and integrate this into your architectural and process decisions in daily operations.Offer insights to refine UI/UX concepts and assist in the planning of backend and infrastructure development.Take proactive responsibility for long-term code quality and architecture. About YouThe ideal candidate will have a proven track record in backend or full-stack development, with a focus on rapid innovation and effective systems design that supports growth opportunities for both the product and the team.To thrive in this role, you should possess the following skills and experiences:5+ years of demonstrated experience in building backend services or distributed systems.Ability to design, develop, test, and maintain backend services and APIs that support product features, including writing robust, production-quality code.Engage in system and service design; contribute to architectural discussions and make informed trade-offs regarding scalability, latency, cost, and reliability.Navigate ambiguity effectively; translate vague or high-level requirements into actionable implementation plans.Collaborate with cross-functional partners including product management, frontend, UX, data, and operations to define requirements, plan implementations, and deliver features.Ensure high code quality by writing, reviewing, and improving unit/integration tests; actively participate in code reviews.

Oct 21, 2025

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Sales Development Representative

cosuno

Full-time|Remote|Berlin/Remote

In der Position des Sales Development Representative bist du der erste Ansprechpartner für unsere potenziellen Neukunden und spielst eine entscheidende Rolle beim Aufbau von langfristigen Geschäftsbeziehungen. Deine Fähigkeit, das Potential eines Interessenten zu erkennen, ist entscheidend für den Erfolg unseres Teams.Zielgerichtete Akquise: Identifikation und Ansprache potenzieller Kunden und Entscheidungsträger.Bedarfsanalyse: Kontaktaufnahme mit Leads zur Bewertung ihrer Bedürfnisse und Einstufung als qualifizierte Verkaufschancen.Erstkontakt: Durchführung von Kaltakquise durch Telefonate und E-Mails, um cosuno vorzustellen und Interesse zu wecken.Beziehungsmanagement: Aufbau und Pflege von Kontakten zu potenziellen Kunden, um langfristiges Vertrauen zu etablieren.Terminmanagement: Planung und Koordination von Meetings oder Demos für das Account Executive-Team.Pipeline-Management: Dokumentation und Pflege der Interessenten in Salesforce.

Mar 1, 2026

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Senior AI Engineer at Voyfai | Berlin

Voyfai

Full-time|On-site|Berlin

Become a part of Voyfai, a rapidly expanding Series A startup redefining logistics and technology throughout Europe.Located in the vibrant city of Berlin, we are at the heart of a diverse portfolio of companies engaging across multiple European markets.This is an exceptional opportunity to take the reins from the outset, create significant impact, and develop your career in an agile, fast-moving atmosphere. Whether you’re optimizing processes, formulating strategies, or spearheading initiatives, your efforts will directly contribute to the success of Voyfai and the enterprises we empower. If you have a passion for building innovative solutions and wish to join a rising star, we encourage you to reach out!Your RoleAs a Senior AI Engineer at Voyfai, you will be instrumental in crafting, developing, and scaling LLM-driven and applied GenAI systems that enhance our main offerings. You will collaborate closely with Product, Engineering, and Business teams to convert complex, unstructured challenges into effective, production-ready AI solutions.This role is hands-on and focused on delivering tangible results. You will take full ownership from identifying use cases and designing prompts or models to deploying, monitoring, and continuously improving systems in production, with a strong emphasis on real-world reliability and business outcomes.Key Responsibilities:Design, develop, and implement LLM-driven and GenAI features for impactful, real-world applications.Build and manage end-to-end GenAI pipelines, encompassing prompt design, model selection or fine-tuning, evaluation, and deployment.Integrate foundational models into production systems, prioritizing latency, cost-efficiency, reliability, and quality.Collaborate with Product Managers and Engineers to convert vague business challenges into scalable AI solutions.Oversee production AI systems, including monitoring, evaluation, guardrails, and feedback mechanisms.Contribute to architectural choices regarding AI platforms, retrieval systems, vector databases, and LLMOps tooling.Elevate the technical standard through code quality, documentation, and mentorship.What You Bring:Several years of experience as an AI Engineer, Machine Learning Engineer, or in a related role, with a hands-on focus on LLMs and applied GenAI in operational environments.Strong grasp of LLM behavior, prompting techniques, evaluation strategies, and common failure modes.Proven track record of successfully implementing AI solutions that drive business value.

Mar 9, 2026

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Senior AI Engineer at Arbio | Berlin

arbio

Full-time|On-site|Berlin, Berlin, Germany

Join Arbio, a pioneering AI-driven hospitality company, and be part of our mission to revolutionize short-term rentals across Europe.At Arbio, we leverage cutting-edge technology to enhance efficiency, elevate guest experiences, and streamline operations in the short-term rental sector. Our rapidly growing team is dedicated to shaping the future of hospitality with innovative AI solutions, all while fostering a culture of performance and accountability. Come aboard and help us lead the industry into a new era of growth and innovation.As a Senior AI Engineer, you will be instrumental in developing the intelligence framework that underpins our operations, from property management to guest services. We are focused on creating advanced Retrieval-Augmented Generation (RAG) systems that convert disparate data into immediate, actionable insights, empowering our teams to provide world-class guest experiences.Your contributions will include:Designing high-performance RAG pipelines utilizing MongoDB Vector DB for rapid semantic search capabilities.Building agent workflows based on LangChain for complex reasoning tasks.Integrating various LLM providers such as Claude, OpenAI, and Gemini.Writing maintainable and scalable TypeScript code to facilitate our growth.Monitoring and optimizing using LangSmith and other LLMOps tools.Collaborating with a dynamic, agile team to push the boundaries of AI in the hospitality field.

Nov 11, 2025

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Senior AI Engineer at akirolabs | Berlin

akirolabs

Full-time|On-site|Berlin

Join our innovative team at akirolabs as a Senior AI Engineer, where you'll play a crucial role in designing and implementing cutting-edge artificial intelligence solutions. We are looking for a passionate individual who thrives in a dynamic environment and is ready to take on challenging projects that push the boundaries of technology.

Apr 1, 2026

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Senior Software Engineer in AI at Realist | Berlin

Realist

Full-time|On-site|Berlin, Germany

About RealistRealist is a pioneering WealthTech startup located in Germany, dedicated to revolutionizing the financial sector with state-of-the-art technology, insightful data analytics, and robust financial infrastructure. As we enhance our platform and technological capabilities, we are in search of a seasoned Senior Software Engineer to join our expanding team in Berlin and contribute to the creation of next-generation financial systems.About the RoleIn the capacity of Senior Software Engineer, you will be instrumental in designing and developing high-performance financial systems that efficiently handle vast quantities of data in a secure manner. You will collaborate closely with product, engineering, and data teams to architect scalable systems and aid in the development of intelligent, AI-driven financial applications.This position demands substantial experience in backend engineering, distributed systems, and data-intensive architectures, combined with a mindset conducive to a dynamic startup environment. We are particularly interested in candidates who are quick learners, capable of swiftly adapting to new technologies and evolving challenges.Key ResponsibilitiesDesign, develop, and maintain scalable backend systems that support data-intensive financial applications.Build and optimize high-performance OLTP systems for transaction-heavy workloads.Contribute to system architecture and design, ensuring reliability, scalability, and maintainability.

Mar 30, 2026

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AI Engineer at Flank | Berlin

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Full-time|On-site|Berlin

Legal teams often find themselves overwhelmed by monotonous tasks, causing delays across the organization. At Flank, we are revolutionizing this scenario.We operate at the forefront of AI innovation, developing the next generation of autonomous agents tailored for enterprises. We have successfully secured a $10M Series A funding round led by Insight Partners (US), with ongoing support from Gradient Ventures (Google’s AI fund), HV Capital, and Speedinvest (EU).Our solution is not merely an optional tool for small startups; we are actively deploying Flank agents within multinational corporations exceeding 100,000 employees, fully automating workflows that were previously deemed unsolvable. Our agents function continuously, under defined parameters with customer oversight, escalating only exceptions to legal for evaluation. Every action and request is transparent and auditable, assuring customers complete visibility over their automated workforce.We are on the lookout for a skilled AI Engineer to spearhead our applied AI projects.In our dynamic startup environment, you will collaborate closely with product, design, and commercial teams to deliver tangible AI solutions — moving beyond mere research experiments.Your responsibilities will include harnessing emerging technologies alongside a team of legal experts to enhance the intelligence and autonomy of our agents.This role may involve the creation of an evaluation framework in partnership with our legal team, or developing a hypervisor that governs each aspect of our agentic system, ensuring alignment with best practices in legal AI systems.

Aug 26, 2025

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AI/ML Engineer in Berlin

airapps

Full-time|On-site|Berlin Metropolitain Area

Role Overview airapps is looking for an AI/ML Engineer to help design and build machine learning models. This role works closely with a skilled team focused on using technology to improve processes and outcomes. Location Berlin Metropolitan Area

Apr 16, 2026

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Platform & Security Engineer

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Full-time|Remote|Berlin/Remote

Join cosuno as a Platform & Security Engineer, where you'll be pivotal in ensuring the security and robustness of our platform. As part of our dynamic team, you'll have the opportunity to work remotely or from our Berlin office, allowing for a flexible work environment. Your expertise will guide the development and implementation of security protocols, enhancing the overall integrity of our systems.

Apr 12, 2026

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AI Engineer at knowunity | Berlin

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JOIN US IN REVOLUTIONIZING EDUCATIONAt Knowunity, we are on a mission to create the premier AI learning companion for 1 billion students worldwide.We envision a future where every student can access, enjoy, and benefit from top-notch educational resources. Since our inception in 2020, we have been dedicated to transforming the way students learn.With millions already utilizing our AI learning platform every week, and backed by a recent €27m investment—the largest in European education in the past three years—we are poised to lead the AI learning market into a new era of personalized education.As part of our elite team of 60 innovative builders, you will have the unique opportunity to contribute to a product that has the potential to change education on a global scale.Seize your chance to help shape a generational company!

Sep 22, 2025

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Senior AI Engineer

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Full-time|On-site|Berlin

Role overview repriskag is hiring a Senior AI Engineer based in Berlin. This position centers on designing and building advanced AI solutions aimed at solving complex problems in a range of industries. The work requires a strong technical background and a creative approach to applying AI methods. Collaboration is central to this role. The Senior AI Engineer will work closely with engineers and researchers, sharing ideas and exploring new directions in AI technology. The team values open communication and a willingness to tackle novel challenges together. What you will do Design and implement AI solutions for diverse industry problems Collaborate with engineers and researchers to develop new AI approaches Contribute to discussions on emerging AI technologies and their practical applications Location This role is based in Berlin.

Apr 24, 2026

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Senior AI/ML Engineer at SumUp | Berlin, Germany

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Full-time|On-site|Berlin, Germany

At SumUp, our mission is to empower small businesses by providing them with accessible and user-friendly tools for payments, finance, and customer relationships. We are a dynamic team grounded in our core values: Founder’s Mentality, Team First, and We Care. We foster an organization that is people-oriented, disciplined, and consistently innovating from within. Agility is at the heart of what we do, and we strive to create an environment that nurtures it. As part of our Global Operations team, you will play a pivotal role in enhancing the customer experience in fintech. The Senior AI/ML Engineer position is essential for the development and deployment of cutting-edge AI solutions that streamline support processes and significantly enhance the experience for our merchants and support agents. You will be a central figure in building and maintaining the ML infrastructure and tools that support our core products utilizing advanced AI/ML models. This role is vital for sustaining our growth, particularly as we expand complex applications such as our AI Assistant and translation tools.

Feb 19, 2026

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Research Scientist in Generative AI at reliant-ai | Berlin

reliant-ai

Full-time|On-site|Berlin, Berlin, Germany

About UsAt reliant-ai, we are dedicated to transforming decision-making in an age of overwhelming information. Our mission is to develop the next generation of machine learning software, leveraging generative AI to analyze critical data sources and deliver comprehensive, factual answers to complex inquiries.We believe that the true potential of generative AI can only be achieved by tackling the world's most significant information challenges. With over two decades of expertise in reinforcement learning and natural language processing, we are poised to make a substantial impact in this field.Our team consists of scientists, builders, and entrepreneurs who have pioneered some of the most influential AI applications. Having led teams at industry giants like Google, DeepMind, and EY Parthenon, we now connect cutting-edge AI research with the biopharma sector.

Aug 20, 2024

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