Senior MLOps Engineer - Machine Learning Workflows

At JetBrains, we are passionate about code. Since our inception in 2000, our mission has been to develop the most powerful and effective developer tools available. By automating routine checks and corrections, our tools accelerate production, allowing developers to explore, innovate, and create. As AI-driven support becomes integral to our IDEs, the ML Workf…

About the Role checkout.com is hiring an MLOps Engineer I in Amsterdam. This role focuses on improving how machine learning models are deployed and managed across the platform. The team works to make machine learning operations more efficient and reliable. What You Will Do Support the deployment and monitoring of machine learning models Help streamline processes for managing models in production Work with modern tools and technologies to improve platform performance

Role Overview KPN is looking for a Senior Machine Learning Engineer to join the team in Amsterdam. This role focuses on building and refining machine learning models that shape both internal operations and customer-facing services. What You Will Do Design, develop, and implement advanced machine learning algorithms Work closely with colleagues to create AI solutions that improve KPN’s offerings Contribute expertise to projects that directly influence customer experience and business processes Location This position is based in Amsterdam.

Join our innovative team at Pinely as a Machine Learning Performance Engineer. We are on a mission to accelerate large-scale model training by optimizing our internal infrastructure and computing stack. In this pivotal role, you will engage with the entire training pipeline—from GPU kernels to system-wide throughput—utilizing profiling, CUDA-level tuning, and advanced distributed systems methodologies. Your contributions will be vital in minimizing training durations, enhancing iteration speeds, and maximizing computational efficiency.As a key member of our growing team, you will help cultivate deep technical expertise in ML training systems.Responsibilities:Enhance our model training pipeline to increase speed and reliability, facilitating quicker and more effective experimentation.Utilize GPU optimization techniques via tools like JAX, Triton, and low-level CUDA to elevate training performance and efficiency at scale.Diagnose and rectify performance bottlenecks throughout the ML pipeline—from data loading and preprocessing to CUDA kernels.Develop tools and expand our internal infrastructure to enable scalable, reproducible, and high-performance training workflows.Guide and mentor engineers and researchers in implementing performance best practices across the team.Assist in enhancing the team's capabilities in GPU and systems-level expertise, contributing to a culture of engineering excellence and rapid experimentation.Requirements:Proven experience optimizing neural network training in production or large-scale research environments, such as reducing training time, enhancing hardware utilization, or expediting feedback cycles for ML researchers.Extensive hands-on experience with ML frameworks like PyTorch or JAX.Practical experience training and optimizing deep learning architectures, including LSTM and Transformer-based models with various attention mechanisms.Familiarity with CUDA, Triton, or other low-level GPU technologies for performance tuning.Expertise in profiling and debugging training pipelines using tools like Nsight, cprofiler, CUDA, gdb, or torch profiler.Comprehension of distributed training concepts including data/model/tensor/sequence/pipeline/context parallelism and memory-compute trade-offs.A collaborative and proactive approach, coupled with strong communication skills and the ability to mentor team members effectively.Strong proficiency in Python for developing infrastructure-level tools, debugging training systems, and integrating with ML frameworks and profiling tools.What We Offer:Competitive salary and comprehensive social benefits.Attractive bonus structure; we are flexible in discussions regarding salary and employment conditions.Access to state-of-the-art hardware and software in production, alongside a highly skilled technical team.

At JetBrains, we are passionate about coding. Since our inception in 2000, our mission has been to develop the most powerful and efficient developer tools available. Our tools are designed to automate repetitive tasks, accelerating production and enabling developers to innovate and explore. The AI features integrated into JetBrains IDEs, crafted by the IntelliJ AI team, have swiftly become essential to a developer's workflow. We collaborate with various product teams across JetBrains to infuse cutting-edge AI capabilities that enhance developer efficiency and provide significant value to software engineers. We are excited to welcome a Senior Machine Learning Engineer to our team. In this pivotal role, you will play a key part in realizing our vision of AI assistance throughout the software development lifecycle within JetBrains IDEs. As a member of the ML subteam within IntelliJ AI, you will oversee the end-to-end development of our machine learning systems, defining evaluation metrics, orchestrating context, and customizing AI features to meet the unique needs of product teams.

At JetBrains, we are passionate about code. Since our inception in 2000, we have been dedicated to creating the most effective developer tools available. By automating routine checks and corrections, our tools enhance productivity, allowing developers the freedom to innovate and create.The JetBrains Research team is at the forefront of exploring how machine learning techniques can revolutionize the software development process. Our mission is to translate cutting-edge academic research into practical applications that improve machine learning for code.We are seeking a talented Senior Machine Learning Engineer to engage in diverse projects, including code completion, AI agent development, and test generation. While we do not require expertise in every area, we are looking for a candidate who is eager to tackle challenges across a variety of contexts.

Why Choose Nebius?Nebius is at the forefront of a transformative wave in cloud computing, designed to empower the global AI economy. We provide innovative tools and resources that enable our clients to tackle real-world challenges and revolutionize industries without incurring hefty infrastructure expenses or the necessity of assembling large in-house AI/ML teams. Our team operates at the cutting edge of AI cloud infrastructure, collaborating with some of the most innovative leaders and engineers in the industry.Our WorkspaceHeadquartered in Amsterdam and publicly traded on Nasdaq, Nebius boasts a global presence, with R&D hubs across Europe, North America, and Israel. Our workforce of over 1,400 includes more than 400 highly skilled engineers with extensive expertise in both hardware and software engineering, along with a dedicated in-house AI R&D team.About the Role:As part of Nebius Cloud, one of the largest GPU clouds globally, Token Factory is developing an inference platform designed to facilitate the rapid, reliable, and effortless deployment of a wide array of foundation models—spanning text, vision, audio, and emerging multimodal architectures—on a massive scale.

Why Join Nebius?Nebius is at the forefront of a transformative era in cloud computing, dedicated to empowering the global AI economy. We develop innovative tools and resources that enable our clients to tackle real-world challenges and revolutionize industries without incurring hefty infrastructure costs or the necessity of extensive in-house AI/ML teams. Our team members are at the cutting edge of AI cloud infrastructure, collaborating with some of the most innovative leaders and engineers in the industry.Our Work EnvironmentWith our headquarters in Amsterdam and a listing on Nasdaq, Nebius boasts a global presence with research and development hubs across Europe, North America, and Israel. Our diverse team of over 1,400 professionals includes more than 400 highly skilled engineers with deep expertise in both hardware and software engineering, alongside a dedicated in-house AI research and development team.We are on the lookout for a Senior Applied Machine Learning Engineer to join our rapidly expanding team focused on creating an agent-native search platform for AI systems, which represents the next generation of web access for AI. In this pivotal role, you will design and deploy machine learning models that enhance retrieval, ranking, and indexing at scale, ensuring AI systems can access up-to-date and reliable information in real time. This is a high-impact position working on a production-level system utilized 24/7, addressing challenges similar to those found in large-scale web search.

About the Role KPN is looking for a Senior Machine Learning Engineer in Amsterdam. This role focuses on designing and building advanced machine learning models that support and improve KPN’s telecommunications and IT services. What You Will Do Create and implement machine learning solutions tailored to business needs Work closely with teams across disciplines to analyze data and extract insights Help shape technology decisions and contribute to ongoing innovation at KPN Location This position is based in Amsterdam.

Join Sia as a Machine Learning Engineer and play a pivotal role in advancing our innovative technology solutions. You will collaborate with a talented team of data scientists and software developers to design, implement, and optimize machine learning models that drive our projects forward.In this position, you will have the opportunity to work on cutting-edge technologies and methodologies, contributing to impactful projects that enhance user experiences and improve operational efficiencies.

Why Join Nebius?Nebius is at the forefront of revolutionizing cloud computing to empower the global AI economy. We develop cutting-edge tools and resources that enable our clients to tackle real-world challenges and revolutionize industries, all while minimizing infrastructure costs and reducing the necessity for large in-house AI/ML teams. Our workforce operates at the forefront of AI cloud infrastructure, collaborating with some of the most experienced and innovative leaders and engineers in the industry.Our Work EnvironmentBased in Amsterdam and publicly listed on Nasdaq, Nebius boasts a global presence with R&D centers across Europe, North America, and Israel. Our diverse team of over 1400 professionals includes more than 400 highly skilled engineers excelling in both hardware and software development, complemented by an in-house AI R&D team.The RoleThis opportunity is part of Nebius AI R&D, a team dedicated to applied research in AI. Recent applied research published by our team includes:Applying reinforcement learning for agent training in long-context multi-turn scenariosDramatically scaling task data collection to enhance reinforcement learning for software engineering (SWE) agentsDeveloping a decontaminated evaluation system for SWE agents that is consistently updatedInvestigating test-time guided search methods to create more powerful agentsThe outcomes of our research frequently pave the way for collaboration with adjacent teams, allowing practical applications of our findings.We are currently seeking experienced ML engineers at the senior and staff levels to engage in research projects that include:Guided search and reinforcement learning for agentic systemsReinforcement learning applications for reasoning modelsWeb-scale data collection for agent trainingEfficient model distillation techniquesKey Responsibilities:Conducting experiments to identify effective methods for training large language models based on interaction traces with various environmentsExploring guided generation and search methodologies within trajectory spacesDevising innovative strategies for mining relevant data at web scale

Join Bloom & Wild as a Machine Learning Engineer and contribute to our mission of transforming the gifting experience. As part of a dynamic data science team, you will leverage cutting-edge technologies to develop machine learning models that enhance our customer offerings. You will work collaboratively with data engineering, product teams, and business intelligence to explore innovative data-driven solutions. Your expertise in Python and AWS will be vital in maintaining and optimizing our existing models while exploring new opportunities for growth.

What You Will DoAs a seasoned Machine Learning Engineer, you will play a pivotal role in expanding our Data team, both in terms of skills and size. You will be instrumental in defining and implementing the future direction of your expertise within Sia. Collaborating with our local team of Data Scientists, the French Data Engineering team, and various business units at Sia Global, you will engage in client projects while also developing innovative Sia AI solutions.Your Key Responsibilities Include:Leading an internal team focused on the creation of AI products;Collaborating within a multidisciplinary team on client projects where your expertise shines;Making architectural and design choices for cloud environments;Developing production-ready ML/AI solutions with robust software engineering practices;Mentoring Data Scientists to enhance their models for production (including parallelizing, optimizing, tuning, testing, and wrapping);Conducting training sessions, leading internal meetings, and organizing external events;Participating in team discussions and workshops with clients;Publishing blog articles, presenting at conferences, and issuing press releases on your area of expertise.Who You Will Work WithThe Data Science team is vibrant, diverse, and continuously growing (10+ members). You will be part of a team that challenges you and supports your professional growth. We maintain a flat organizational structure that encourages initiative and entrepreneurial spirit. We prioritize well-being, diversity, and knowledge sharing within the team to foster collective growth.Your ProfileYou are a knowledgeable professional looking to advance your career by embracing more leadership responsibilities.You possess excellent project management and time management abilities.You are a natural problem solver, capable of turning complex challenges into straightforward and impactful business solutions.You have a keen interest in applying Data Science and Engineering solutions to real-world business problems.Your communication skills are exceptional, allowing you to convey complex concepts in a clear and concise manner.You can adapt swiftly and work across various business domains in a dynamic environment.You thrive in a collaborative team setting.What We OfferAn international company that values diversity, inclusion, employee well-being, and corporate social responsibility.A friendly and professional working atmosphere that fosters innovation and entrepreneurship.A tailored personal development plan with ongoing support and training opportunities to facilitate your growth.A competitive salary complemented by attractive benefits, including a mobility budget.

JetBrains is seeking a Senior Machine Learning Researcher to focus on Spectrum. This position centers on applying machine learning expertise to improve product features and contribute to ongoing research efforts. Role overview This role involves working with a team dedicated to advancing the capabilities of Spectrum. The Senior Machine Learning Researcher will use their knowledge to influence product direction and participate in research projects that drive innovation. Key responsibilities Apply machine learning methods to enhance Spectrum's technology. Contribute to research initiatives that inform future product development. Share insights and provide leadership within the research team. Locations This position is available in Amsterdam, Belgrade, Berlin, Limassol, Madrid, Munich, Paphos, Prague, Warsaw, and Yerevan.

As an Azure Machine Learning Engineer, you will be at the forefront of our AI and Machine Learning practice in the Netherlands. You will lead the way in the Azure AI domain and play a key role in shaping our AI strategy, both internally and for our clients. Your ability to merge technical depth with a pragmatic approach will enable you to successfully bring AI solutions into production.You will serve as a vital partner to both consultants and clients, helping them maximize the power of AI within the Microsoft ecosystem. Your expertise will encompass Azure Machine Learning, Azure OpenAI, Cognitive Services, Fabric, Databricks, and MLOps solutions in Azure.Your contributions will advance our AI knowledge within the team, collaborate with international colleagues, and support our commercial teams in designing innovative AI and ML projects. You will work on end-to-end solutions: from use case discovery and model development to deployment, monitoring, and optimization.Your role is crucial for our growth in the AI domain, helping position Devoteam as a thought leader in Azure AI and contributing to projects that deliver genuine business impact.

At IMC Trading, we recognize that technology is the cornerstone of our competitive advantage, and machine learning plays a pivotal role in our trading strategies. In recent years, we have diligently enhanced our machine learning capabilities by building robust infrastructure, expanding our in-house GPU cluster, deploying models into production, and collaborating closely with quantitative researchers and traders to create significant impact. As we continue to grow, we are looking to expand our team, enhance our systems, and accelerate the integration of deep learning into our research and execution workflows.We are seeking a Lead Principal Machine Learning Engineer to guide the next evolution of our platform — influencing architecture, promoting best practices, and addressing high-impact challenges. You will collaborate with researchers and technologists to design systems that facilitate experimentation, training, and deployment of machine learning models, while also helping to define the future approach to machine learning at IMC as we scale. If you have experience building machine learning infrastructure at scale and want to play a key role in shaping our firm's trajectory, we invite you to connect with us.

Why Join NebiusNebius is at the forefront of cloud computing, empowering the global AI economy. We provide our clients with essential tools and resources to tackle real-world challenges and revolutionize industries without incurring hefty infrastructure costs or needing to develop extensive in-house AI/ML teams. Our team operates at the cutting edge of AI cloud infrastructure, collaborating with some of the most experienced and innovative leaders and engineers in the industry.Our Work EnvironmentHeadquartered in Amsterdam and publicly traded on Nasdaq, Nebius boasts a worldwide presence with R&D centers across Europe, North America, and Israel. Our diverse team of over 1,400 employees includes more than 400 highly skilled engineers with deep expertise in both hardware and software engineering, complemented by an in-house AI R&D team.About the RoleAs part of Nebius Cloud, which operates one of the largest GPU clouds globally—utilizing tens of thousands of GPUs—Token Factory is dedicated to building a high-performance inference and fine-tuning platform that pushes foundational models to their hardware limits. Our commitment is to enhance throughput, reduce latency, and optimize cost-per-token across our expansive GPU resources.Current Projects You Could Contribute To:Inference Optimization: Identify bottlenecks in LLM inference to accelerate production speed. Maximize performance for a variety of LLM architectures at scale (e.g., GPT-OSS, Kimi K2.5, DeepSeek V3.1/V3.2, GLM-5).Inference Engine Support: Implement innovative speculative decoding architectures, optimize components of different LLM designs (dense/MoE, autoregressive/parallel), and contribute to open-source inference engines.Low Precision Training & Inference: Design and operationalize low-precision training (FP8, NVFP4/MXFP4) and inference pipelines to achieve significant improvements in throughput and cost efficiency.

At IMC, technology is the foundation of our operations. Our cutting-edge proprietary software drives millions of trading decisions every day, allowing us to stay ahead of the competition through rapid and efficient decision-making. In 2023, IMC expanded its capabilities by acquiring Altas Technologies, a dynamic algorithmic trading firm dedicated to developing the most advanced trading stack for the future. This strategic acquisition combines Altas's sophisticated trading strategies with IMC's robust execution and scaling capabilities, reinforcing our market position and paving the way for sustained stability and growth. The Role You will join a dedicated team of engineers collaborating closely with a larger group of researchers. This structure is intentional — it drives us to create high-quality, efficient systems. With limited personnel, we must ensure the reliability of our systems. You will take full ownership of what you build: from design, through implementation, to maintenance. The role encompasses a wide range of responsibilities: real-time ML inference powering trading strategies, the large-scale data infrastructure that supports it, and the research platform that enables quantitative researchers to discover alpha. If you prefer to specialize in just one area and delegate the rest, this may not be the position for you. We delve deeply into every aspect of our work, which presents exciting challenges and continuous learning opportunities. How We Work Competence is our standard, not our distinguishing factor. While individual performance is important, what truly differentiates us is the caliber of our ideas and our collaborative spirit — we value discussion and mutual respect, leaving egos at the door. Responsibilities Develop and refine the real-time inference system — delivering ML predictions with sub-millisecond latency as part of a live trading system. Construct and sustain petabyte-scale data and ML infrastructure — ensuring high-throughput ingestion into our data lake, orchestrating end-to-end ML pipelines, and managing everything in between. Facilitate alpha research and transition it to production — create the research platform that researchers rely on daily: ensuring rapid loading of TB-scale datasets, providing horizontally scalable compute for experiments, conducting feature engineering, and performing backtesting. Collaborate with researchers to rapidly implement their concepts into production without compromising quality. What We Expect From You You should be proficient in a systems programming language — preferably Rust or C++ — along with Python. Mastery of both is essential for navigating the entire stack.

At JetBrains, we live and breathe code. Since our inception in 2000, our mission has been to create the world's most powerful and efficient developer tools. By automating routine checks and corrections, our products accelerate development processes, empowering developers to innovate and create freely. JetBrains is transitioning from standalone developer tools to an integrated, AI-driven platform for software development. The role of AI has evolved from a simple assistant within the editor to a vital participant in the planning, building, reviewing, and operating of software across teams and organizations. This transformation presents new challenges that cannot be addressed at the individual tool level: governance, security, cost management, observability, and synchronized collaboration between humans and autonomous agents. Our ambition is to develop a platform that facilitates the adoption of AI in software development in a structured, scalable, and cost-effective manner, without confining companies to closed ecosystems. This platform will act as the execution and governance layer for AI-powered development, seamlessly integrated with developer tools while functioning across teams, products, and environments. We are in search of a seasoned ML leader who has a proven track record of developing products with an ML foundation, harmonizing research, technical excellence, and a strong focus on product.

We are thrilled to present an exciting internship opportunity for a Machine Learning Research Intern to become part of our dynamic team in Amsterdam. In this role, you will engage in pioneering projects aimed at developing and enhancing high-frequency trading (HFT) strategies utilizing machine learning (ML), deep learning (DL), and reinforcement learning (RL) techniques. You will collaborate closely with seasoned researchers and engineers, gaining valuable hands-on experience in deploying advanced ML methodologies on real-world financial datasets. This internship provides a unique chance to delve into the intersection of artificial intelligence and quantitative finance, contributing to our ongoing mission to automate and optimize trading strategies within a rapidly evolving market landscape.The internship duration ranges from 3 to 6 months, adaptable based on team needs and intern availability. Successful interns may receive an offer for a full-time position at Pinely.ResponsibilitiesEngage in innovative research and development of high-frequency trading (HFT) strategies;Analyze HFT strategies and market microstructures to discover new trading opportunities;Collaborate with developers and fellow researchers to implement and enhance trading strategies;Contribute to the refinement of existing trading strategies and assist researchers in the design of quantitative strategies.RequirementsA strong passion for research;In-depth understanding of probability theory and mathematical statistics;Experience with machine learning methodologies;Proficiency in Python programming.Preferred QualificationsParticipation in ML competitions, hackathons, or mathematical/programming Olympiads;Experience with big data processing technologies (MapReduce, Hadoop, Apache Spark);Demonstrated excellence in competitive programming contests;Engagement with ML conferences.What We OfferA team of exceptional individuals, including Kaggle Grandmasters, ACM ICPC World Finalists, and contributors to A* conferences;A robust and adaptable infrastructure to support your strategies and innovations, enabling daily testing of ideas on a real-time production leaderboard, fostering an environment ripe for experimentation and iteration;A modern, fully equipped office designed for productivity and comfort;A friendly workplace that values and prioritizes a healthy work-life balance to support the well-being of our team;Engaging corporate and team events.