AI Engineer at knowunity | Berlin

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 million…

THE OPPORTUNITYJoin us in creating the leading AI learning companion for one billion students worldwide.At Knowunity, we envision a future where every student has access to high-quality education. Founded in 2020 by a group of passionate individuals straight out of high school, we are dedicated to transforming the educational landscape.Our AI learning companion is already making a difference for millions of students globally, and with our recent €27 million funding round—the largest in European education in the last three years—we are poised for rapid growth. The educational AI sector is on the brink of a breakthrough, and we aim to establish the first unicorn in this space.By becoming part of our elite team of 60 dedicated builders, you will help us realize our vision to transform education for students everywhere.This is your opportunity to contribute to a groundbreaking company.YOUR MISSIONThe challenge you will tackle: You will assist our dynamic engineering team in developing and enhancing the product that empowers millions of students to learn more effectively every day.Your responsibilities include:Collaborating with product managers and engineers to develop new features and improvements.Implementing core functionalities that enhance user experience.Contributing to code quality and strengthening our technical foundation as we scale.Why your role is crucial: Knowunity is already benefiting millions of students, and your contributions will play a key role in shaping how they learn and grow. Your efforts will support our mission to be the top learning companion for one billion students.What success looks like: You will make significant contributions to live product features, work closely with senior engineers and the CTO, and evolve quickly as a technical talent. You will be encouraged to bring your ideas forward, take ownership of small projects, and potentially secure a full-time position after your internship.Our Tech Stack: Our application is built using Flutter with Riverpod, while our backend is powered by Golang, PostgreSQL, and hosted on AWS with Kubernetes. We utilize various LLM providers (OpenAI, Gemini, Anthropic, and Mistral), custom routing engines, and fine-tuned models as part of our AI stack. Our data infrastructure includes BigQuery and dbt.

Join Our Mission as a Product DesignerAre you a passionate product designer with a deep appreciation for craftsmanship and a keen interest in AI technology? At Knowunity, we're seeking a top-tier product designer to join our dynamic team of over 60 innovators, dedicated to transforming the educational landscape for millions of students.Why Choose Knowunity?We are on a mission to create the leading AI learning companion for 1 billion students worldwide. Our vision is to ensure that every student has access to the highest quality education. Since our inception in 2020, we have been committed to revolutionizing student learning experiences.Currently, millions of students engage with our AI solutions each week. With a recent funding round of €27 million—the largest in European education over the last three years—we are poised to capitalize on a market ripe for personalization and innovation. Our goal is to establish the first successful AI learning unicorn.As part of our elite team, you will help shape a product that could change the educational experience for an entire generation. This is your opportunity to build something that makes a lasting impact in the world of education.Why Now?Design is our most crucial investment at Knowunity, and you will play a key role in this transformative journey. We have developed a product that resonates with millions of students, powered by an agile engineering team that prioritizes rapid iteration and learning. Now, we are focused on elevating our design standards to achieve unparalleled UI excellence, motion design, and systematic thinking that sets our product apart.With our new Head of Design on board, we are building a comprehensive design system and collaborating with top-tier agencies like Ragged Edge to enhance our brand identity.This is your chance to not just maintain a design vision but to actively shape it from the ground up.Who You AreYour portfolio speaks volumes about your skills—show us projects that have driven metrics and delighted users:Craft-oriented: You’re detail-focused and committed to elevating design standards.AI Advocate: You view AI tools as an opportunity to amplify creativity and efficiency.Systems Thinker: You prioritize scalability and consistency in design quality.

At Knowunity, we are pioneering the future of learning, and our Finance department is scaling rapidly to keep up. We are seeking a dynamic Finance Analyst to be the strategic partner to our Director of Finance & People. This role is a blend of finance operations and innovative building, allowing you to work closely with leadership, including our founders. You will be instrumental in streamlining financial processes, enhancing reporting capabilities, and driving automation initiatives. Consider this position as a mini-COO role within Finance, offering high levels of ownership, direct access to leadership, and the opportunity to shape our financial landscape from the ground up.Your ImpactStrategic Collaboration: Act as a force multiplier for the Director, preparing decision briefs and leading cross-functional initiatives to enhance the efficiency and effectiveness of the Finance function.Finance Operations & Accounting: Take ownership of essential financial processes including monthly, quarterly, and annual close, ensuring seamless coordination with external auditors and maintaining the integrity of financial reporting.Controlling & Financial Planning: Lead operational controlling tasks such as budgeting, financial forecasting, and liquidity management. Deliver insightful monthly reports and conduct in-depth analyses to guide growth and investment strategies.AI & Automation: Identify and implement opportunities for automating finance workflows utilizing AI tools and low-code platforms, transitioning from static reporting to dynamic financial insights.Strategic Finance & Capital Allocation: Support the management team with financial modeling for growth initiatives and act as a trusted advisor on key business decisions.Cross-Functional Liaison: Build and maintain relationships with tax advisors, auditors, and legal service providers across various jurisdictions, serving as a key connection between Finance, People, and other departments like Growth and Engineering.Future-Ready Finance: Contribute to establishing a digital finance infrastructure that includes intelligent dashboards, predictive KPIs, and a scalable ERP and treasury architecture to support Knowunity's growth.Your BackgroundExperience: 1–3 years in finance, preferably gained from a Big 4 advisory firm, a high-growth startup, or a similar environment.

JOIN US IN TRANSFORMING EDUCATIONAt knowunity, we are on a groundbreaking mission to redefine the future of learning. Our vision is to ensure that every student globally can access, enjoy, and reap the benefits of top-tier education. With an ambitious goal to become the first AI learning unicorn, we are committed to making this vision a reality.Every day, millions of students engage with our personalized AI learning companion. Following our recent €27 million funding round, we are poised to seize the moment in the AI learning sector, offering genuine personalization at scale for 1 billion students.YOUR ROLE IN THIS REVOLUTIONAs a Product Engineer, you will have a pivotal role in shaping the learning experiences of future generations. Engineering lies at the heart of knowunity, driving our innovation forward. Your responsibilities will encompass:Developing large-scale, truly personalized video content.Leveraging data for topic prediction and personalized guidance, unlocking the potential of AI.Creating diverse and guided practice methods, moving beyond outdated models.Innovating multi-modal output formats, ensuring engaging learning experiences.Exploring new learning approaches for Generation Alpha.Integrating social learning aspects into AI companions to foster real-world interactions.Rapidly deploying A/B tests to millions of users for iterative improvements.Your contributions will be crucial in helping us become the leading AI learning companion for 1 billion students. The features you develop will directly influence student motivation, success, and our growth in daily active users and retention rates.Success in this role means delivering quickly, learning rapidly, and seeing your work positively impact millions of students worldwide. You will play a significant role in both product strategy and engineering excellence, providing insights and clarity in discussions, ultimately leading to measurable outcomes.WHO WE'RE LOOKING FOR

ABOUT USAt Knowunity, we are dedicated to shaping a future where every student around the globe can access, appreciate, and gain from top-notch education. Since our inception in 2020, fresh out of high school, we have been on a mission to transform the learning experience for students.Our innovative AI learning companion is already used weekly by millions of students. We recently secured €27 million from esteemed investors, marking one of the largest education funding rounds in Europe in recent years. The AI learning landscape is at a pivotal moment, paving the way for genuine personalization at scale, and we are determined to establish the first AI learning unicorn in this promising sector.Join our dynamic team of 60 passionate builders, committed to serving 1 billion students worldwide. If we realize our product vision, your contributions will help revolutionize education on a global scale.This is your opportunity to be part of a transformative company.

JOIN OUR MISSIONAt Knowunity, we are on a quest to create the leading AI learning companion, aiming to support 1 billion students worldwide.Since our inception in 2020, straight out of high school, we have dedicated ourselves to transforming the educational landscape. Our vision is to ensure that every student has access to an enjoyable and top-quality learning experience.With millions of students already engaging with our platform weekly and a recent €27 million funding round—the largest in Europe’s education sector in the past three years—we are poised at the forefront of the AI learning market. We are here to establish the first AI learning unicorn, bringing true personalization to education at scale.As part of our innovative team of 60 passionate builders, you will contribute to a transformative journey aimed at impacting the education sector for generations to come.Seize this opportunity to be part of a legendary venture.YOUR ROLEChallenges Await: We are rapidly advancing to seize opportunities in the AI learning market, but our CEO and leadership team require support to unlock critical growth initiatives that will enhance both Daily Active Users (DAU) and Annual Recurring Revenue (ARR) towards achieving unicorn status.Your Responsibilities:Lead 2-3 impactful projects that drive revenue growth and enhance operational efficiency—this includes optimizing our sales funnel and propelling market expansion across various countries and sectors.Develop data models and strategic frameworks to guide decisions regarding market entry and product positioning.Facilitate seamless execution for our leadership team by taking ownership of cross-functional initiatives from research through implementation.The Importance of Your Work: Every initiative you complete propels us closer to our goal of serving 1 billion students. Your contributions will directly influence our key objectives: increasing ARR and DAUs as we strive for market leadership.Indicators of Success: In the next 3-6 months, you will achieve measurable results—whether by improving sales conversion rates, validating expansion strategies, or implementing automations that enhance team productivity.

JOIN US IN TRANSFORMING EDUCATIONAt knowunity, we are pioneering a new era of learning. Our vision is to ensure that every student worldwide can access and thrive through exceptional educational resources. We are committed to establishing the first AI learning unicorn, revolutionizing personalized education.With millions of users already benefiting from our innovative AI learning companion, we are excited to announce our recent €27 million funding round aimed at seizing the immense potential of the AI learning market, enabling true personalization for 1 billion students.YOUR ROLEAs a Flutter Engineer, you will have the unique opportunity to influence the future of student learning. Engineering lies at the heart of our mission, and you will play a pivotal role in this transformation through:Creating engaging video content at scale with a personalized approachImplementing topic prediction and real-time guidance to enhance AI-driven personalizationDeveloping innovative practices that outshine outdated models like QuizletDelivering diverse, interactive learning experiences beyond traditional textExploring new learning methods tailored for Generation AlphaFacilitating social learning experiences through AI companionsRapidly deploying A/B tests to millions of usersYour contributions will not only enhance how students engage with learning materials but also drive our daily active users, retention rates, and long-term impact. You will witness your innovations directly influencing the study habits and success of millions globally.WHO WE SEEK

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.

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.

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

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.

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.

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.

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.

Trinetix is seeking a talented AI Engineer to join our innovative team.As a part of Trinetix, you will work on exciting projects with a leading global telecommunications company that operates one of the most reliable internet backbones across over 100 countries. In this role, you will contribute to ambitious AI initiatives aimed at enhancing network operations through intelligent automation, predictive analytics, and AI-enabled workflows.Your work will involve developing GenAI applications, AIOps intelligence, and RAG-based systems, helping to revolutionize the monitoring, analysis, and operation of complex telecom infrastructures. This position integrates engineering, data science, and product strategy to deliver AI solutions that have a significant business impact.Join us to advance your career in a vibrant international setting while playing a pivotal role in shaping the future of AI-enhanced network operations.

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.

About UsAt Melotech, we are transforming the media and entertainment landscape by merging art with technology, crafting experiences that resonate with audiences globally. In just two years, our innovative projects have garnered over 3 billion minutes of engagement worldwide.Founded by visionary entrepreneur Soheil Mirpour, we are proudly supported by leading venture capitalists including Cherry Ventures, Speedinvest, and GFC, along with esteemed angel investors from top firms such as Spotify, Blackstone, and KKR.Your RoleAs a Machine Learning Engineer at Melotech, you will be the pivotal force driving our content platform. You will face essential challenges: How can we construct ML systems that efficiently serve millions while ensuring low latency? What is the best architecture for developing and deploying models that interpret cultural trends instantaneously? How can we harness advanced models to enrich creative processes without compromising quality? Your autonomous work will directly shape our success, collaborating closely with our founder and team. Daily responsibilities may include:Building and implementing production-grade ML models within our content ecosystem.Designing scalable ML infrastructure and pipelines to manage extensive media datasets.Creating inference systems for content optimization across various sectors.Tuning and deploying multimodal AI systems utilizing MLOps best practices.Partnering with data science teams to transition research models into production-level solutions.Enhancing model efficiency for cost-effectiveness while ensuring accuracy and rapid response times.Integrating ML functionalities into existing platforms and developing APIs for streamlined model access.Your ProfileYou are an ML engineer focused on production who connects cutting-edge technology with scalable systems. Your expertise lies in constructing resilient ML infrastructures that support real-world applications at scale. You thrive in dynamic environments where your technical choices significantly influence business outcomes and user experiences. Your qualifications typically include:A degree in Computer Science, Machine Learning, Mathematics, Engineering, or a related field.3+ years of practical ML engineering experience developing production systems at leading tech companies, high-growth startups, or in the media/entertainment sector.Strong grasp of machine learning frameworks and libraries.Experience with cloud platforms and deployment strategies.Proficiency in programming languages such as Python, Java, or C++.

About coretylyntcoretylynt is revolutionizing the industrial supply chain with an innovative AI-powered trading platform that facilitates seamless connections between vetted suppliers across Asia, Europe, and the GCC region and local demand. Our integrated platform digitizes and automates the entire lifecycle of materials trade, optimizing processes from procurement and pricing to inventory management, logistics, and embedded financing. This automation replaces thousands of manual, relationship-driven tasks, enabling real-time orchestration of supply chains.Our platform provides buyers with instant quotes, dependable availability, and predictable delivery through a unified operating system. Suppliers enjoy precise forecasting, effective demand management, and smooth integration into cross-border fulfillment networks. Partnering with leading brands, we manage both dropship and cross-dock fulfillment for large-scale transactions, transforming global supply chains into predictable, efficient workflows akin to software systems.With strong backing from top-tier investors and institutional financing partners, coretylynt has achieved triple-digit million GMV, operates in six international markets, and is swiftly moving toward profitability. Our team of over 80 professionals, based in Berlin and Asia, is committed to creating the world’s first industrial-grade AI operating system for materials, redefining how global trade functions in one of the world’s largest and most critical industries.Join our dynamic Tech team, where you will collaborate with highly ambitious and knowledgeable engineers, tackle complex challenges, and gain exposure to commercial aspects.Our Tech Stack: Python, LangGraph, LLM APIs (OpenAI, Anthropic, Gemini), AWS, GitHub Actions, Node.js, Java 21 (Spring Boot 3), Postgres, Kinesis, Terraform, Typescript, NextJS, React.

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 process using multi-step reasoning. End-to-End Product Integration: Own feature delivery across the stack, from model and API to the TypeScript front-end, making sure new capabilities fit smoothly into the web application. Ranking, Search, and Retrieval: Improve systems for subcontractor matching and marketplace search, focusing on ranking and retrieval performance. Price Prediction: Enhance models that estimate fair pricing for construction projects, helping users evaluate bids and make procurement decisions. Experimentation and Evaluation: Run offline evaluations, set up A/B tests, and use metrics to guide iterative improvements. Cross-Team Collaboration: Work closely with Product, Engineering, and Data teams to turn business challenges into meaningful ML and AI solutions. Production ML and AI Maintenance: Monitor, alert, and continuously improve all deployed machine learning and AI systems.