Data Technical Trainer in Amsterdam

At Graviton, we don't believe the best trading strategies come from following established playbooks. They come from asking better questions. Why does a pattern exist? What is driving it? Is it real or just noise? Can it be explained, modelled and turned into an edge? As a Quantitative Researcher, you'll work on those questions every day. You'll investigate market behaviour, develop quantitative models, build and test hypotheses and turn insights into trading strategies, working alongside researchers and technologists in an environment where an idea on a whiteboard can reach live trading quickly. This isn't a role where the answers are in a textbook. The problems are open-ended, the data is enormous, and finding the answers is the job. Ideal candidates are rigorous thinkers who genuinely enjoy mathematics, programming and figuring out things that aren't obvious, based in our Singapore, London, Amsterdam or US offices. What You'll Work On You'll work across quantitative research and systematic trading, taking ideas through the full lifecycle: question, hypothesis, experiment, model, validation, strategy, production. Depending on your team and research interests, your work would include: Discovering predictive patterns and sources of alpha from billions of market events Formulating hypotheses about market behaviour and designing experiments to test them Applying probability, statistics, optimization and machine learning to build predictive models and quantitative signals for systematic trading Designing robust backtests and statistical tests to distinguish genuine signals from noise Working with large and complex datasets to uncover patterns that aren't immediately visible Investigating market microstructure and how markets behave at different timescales Evaluating strategy performance, identifying weaknesses and continuously refining models Developing research infrastructure and AI-powered tools and agents that make experimentation faster and analysis deeper Working c

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Director, Services Business Development – Retail & Commerce (Fluent in Dutch) Overview Mastercard Services helps organizations make better business decisions through data, insights, consulting, and technology-enabled solutions. As Mastercard continues to expand its Services business in the Netherlands, we are seeking a Director, Business Development to drive growth across Retail & Commerce organizations. This role will focus on building commercial relationships with leading merchants, identifying new opportunities, and helping customers solve business challenges through Mastercard's broad portfolio of Services offerings. Working closely with specialist sales teams and internal partners, the successful candidate will play a key role in expanding Mastercard's presence within one of its strategic growth segments while supporting long-term revenue growth across the Dutch market. All About the Role • Drive growth of Mastercard Services across Retail & Commerce organizations in the Netherlands. • Develop and expand executive-level relationships within major retail, ecommerce, and fintech accounts. • Identify new commercial opportunities and build a qualified sales pipeline. • Lead customer discussions to uncover business priorities and align Mastercard Services capabilities t

Job Title Internship: Finance & Accounting - Group Consolidation & Reporting (non-thesis) Job Description Start Date : as soon as possible Duration: at least / 6 months Type: Internship (non-thesis) Weekly Presence: 40h Location: Amsterdam Internship: Finance & Accounting - Group Consolidation & Reporting (non-thesis) Assists in the planning and coordination of the quarterly press release and annual report process. This involves liaising with other teams within Royal Philips (e.g., Group Sustainability, Philips Design, Group Tax). Assists in XBRL filings for the Dutch Authority for the Financial Markets (AFM) and the US Securities and Exchange Commission (SEC). Retrieves and processes data from our financial system to our reporting tool. Assists in preparation and presentation of reports or findings for internal and external stakeholders, ensuring that all findings are presented with utmost accuracy and clarity. Analyzes data related to departmental projects, identifying significant trends, patterns, and anomalies, and delivering actionable recommendations that drive data-informed decision-making. Conducts research on relevant topics and areas by investigating current trends, industry best practices and competitive landscape to provide comprehensive insights and support the strategic direction of ongoing projects and initiatives. Participates in team meetings, contributing ideas and input, while also capturing detailed minutes that accurately reflect discussions, decisions, and action items, ensuring effective communication and follow-up within the team. Contribute to other ad hoc projects, such as GC&R team projects or process improvements projects. You are a part of The Group Consolidation and Reporting (GC&R) team, wh

About Appier Appier (TSE: 4180) is an AI-native Agentic AI as a Service (AaaS) company t hat empowers businesses to create value through cutting-edge AdTech and MarTech solutions. Founded in 2012 with the vision of “Making AI Easy by Making Software Intelligent,” Appier helps businesses turn AI into ROI through its Ad Cloud, Personalization Cloud, and Data Cloud—each powered by Agentic AI that enables autonomous, adaptive, and real-time decision-making. Today, Appier operates 17 offices across APAC, the US, and EMEA, and is listed on the Tokyo Stock Exchange. Learn more at www.appier.com . About the Role We are seeking a Strategic Account Manager to drive revenue retention and growth across Appier's strategic accounts in EMEA. This is a senior role on our Strategic Account team, responsible for the long-term growth of a portfolio of our highest-value clients. You will find and execute the highest-impact growth opportunities across your accounts, solve the complex performance and measurement problems that unlock them, and build the client relationships and internal coordination to do this repeatably rather than one account at a time. The role is about understanding what drives account growth and owning the outcome, not just managing day-to-day delivery. What You Will Do (Responsibilities) Revenue Retention & Growth: Own revenue outcomes across a portfolio of strategic accounts, and hit retention and expansion targets. Find and close growth opportunities such as budget increases, product adoption, and geographic expansion. Watch for early churn signals and act on them with reactivation, retention, or commercial plans. Client Ownership & Strategy: Build and own 12-month account growth plans covering relationship mapping, upsell and cross-sell strategy, testing roadmaps, and revenue targets. Act as a trusted advisor to clients at every level, up to executive leadership, through planning sessions and regular QBRs that focu

Ready to Get Shit Done? At bunq, we're not just building a banking app, we are reshaping how people experience financial freedom globally. To sustain that mission while protecting our users and our business, we need an Internal Auditor focused on Regulatory Compliance to ensure we meet every regulatory requirement, manage compliance risks, and keep our operations audit-ready at all times. As an Internal Auditor - Regulatory Compliance, your mission is to safeguard bunq's regulatory standing by identifying and mitigating compliance gaps, ensuring adherence to evolving regulations across all markets we operate in, and building the audit infrastructure that keeps our business resilient. Take Ownership As an Internal Auditor - Regulatory Compliance, you will own: Conduct compliance audits across all business lines (AML, KYC, data protection, market conduct) and identify gaps with concrete remediation recommendations. Build and execute the audit roadmap, prioritizing high-risk regulatory domains and ensuring systematic coverage across our markets. Drive remediation tracking with business teams, ensuring findings are addressed and root causes fixed, not just symptoms. What You'll Work on Right Away Compliance Audit Program: Design and execute the first multi-domain compliance audit program, covering AML/KYC, data protection, market conduct, and operational risk, delivering findings and a forward remediation roadmap. High-Risk Compliance Assessment: Conduct a deep-dive audit into bunq's highest-risk regulatory areas (likely payment services directives, data governance, or market-specific regulations depending on your markets), identifying systemic gaps and building a remediation plan. Regulatory Change Impact Assessment: Analyze recently enacted or upcoming regulations across our markets and assess operational readiness, working with stakeholders to ensure bunq remains compliant before enforcement deadlines. Do You Have What It Takes? Regulatory audit expertise: Proven exp

At bunq, we're not just building a banking app; we're reshaping how people around the world experience financial freedom. As a (Senior) iOS Developer, you’ll be instrumental in crafting and maintaining cutting-edge mobile applications that elevate our users' banking journeys. Collaborate with our dynamic team to deliver a seamless, innovative, and user-friendly experience on the iOS platform. Take Ownership Develop and maintain scalable iOS architecture, ensuring efficiency and a seamless user experience using Swift and iOS SDK. Integrate and optimize REST APIs, managing authentication, error handling, and data flow for smooth performance. Enhance CI/CD and testing automation, maintaining fast release cycles and ensuring robust app quality. Develop new features and fix bugs proactively, keeping performance sharp and delivering a seamless experience for our user. Proficiency in Swift, Objective-C, and SwiftUI to build intuitive, high-performance interfaces. Experience in designing scalable and secure network layers using REST APIs & authentication. Familiarity with CI/CD pipelines and automated testing for implementing continuous testing strategies. Expertise in state management and UI frameworks to create fluid, responsive applications using UIKit or SwiftUI. Fluency in English to effectively communicate in a global team and ensure collaboration and clarity across all project stages. All new hires are subject to Pre-employment Screening (PES), which includes checks conducted by our third-party partner, Zinc. This is part of our commitment to a secure and trustworthy workplace Curious to see how we make life easy? - try the bunq app , it only takes 5 minutes to sign up. Your space to perform We give you the space and the tools you need to succeed 💪🏼 🤟 Great, international colleagues who share your mindset 👩‍💻 Hybrid setup: after 3 months in-office, work 2 days remote, 3 days in-office weekly. 🧳 Digital Nomad Program: After your first year, enjoy up to 20 days p

As a Chargebacks Expert, you will play a key role in protecting our users by ensuring Mastercard / Adyen disputes are handled accurately, fairly, and in line with Mastercard and PSD2 requirements. Taking end-to-end ownership of the chargeback process, you will leverage your expertise, together with AI, automation, and data-driven insights, to continuously strengthen our operations, scale our impact, and deliver a transparent, high-quality experience that gives users confidence every step of the way. Pro tip 💡: we love giving people a shot to grow into a role, but for this position Chargeback expertise is required. Take Ownership Maintain a single, central operational playbook and decision framework that defines the full end-to-end chargeback process from submission to closure. Define and track clear operational performance metrics to drive regular performance reviews and continuous improvement. Leverage AI and automation to streamline submission flows, support decision-making during investigations, and keep users proactively updated on their case status. Conduct regular gap analyses to identify structural inefficiencies and quality gaps, translating insights into actionable corrective action plans. Optimize the user-facing chargeback flow and communication templates to minimize friction and ensure clear, empathetic, and consistent support. Ensure full compliance with global payment regulations and card scheme rules, continuously updating guidelines to mitigate regulatory risks. You have an AI-first mindset: You love turning manual processes into scalable AI solutions, constantly seeking ways to automate operations and scale impact. You have deep Chargeback understanding: You possess strong expertise in chargebacks, cards operations, merchant disputes. You are a relentless problem solver: You hunt for the root cause of operational issues using data instead of opinions, ensuring permanent and systemic fixes. You possess a Get Shit Done mentality: You thrive on hands-

Why project44? At project44, we believe in better. We challenge the status quo because we know a better supply chain isn’t just possible—it’s essential. Better for our customers. Better for their business. Better for the world. With our Decision Intelligence Platform, Movement, we’re redefining how global supply chains operate. By transforming fragmented logistics data into real-time, AI-powered insights, we empower companies to connect instantly, see clearly, act decisively, and automate intelligently. Our Supply Chain AI enhances visibility, drives smarter execution, and unlocks next-gen applications that keep businesses moving forward. Headquartered in Chicago, IL, with a 2nd HQ in Bengaluru, India, we are powered by a diverse global team tackling the toughest logistics challenges with innovation, urgency, and purpose. AI at project44 We expect every project44 team member, regardless of role or function, to actively leverage AI in their day-to-day work. Whether you’re building product, serving customers, managing people, or running operations, AI is a tool you’re expected to use with intent, curiosity, and judgment. We don’t expect everyone to be a data scientist. We do expect everyone to be an intelligent user of AI: able to identify where it adds value, direct it effectively, evaluate outputs critically, and govern it responsibly. We invest in our team’s AI fluency because we believe it’s a competitive advantage for every person at project44, not just our engineers. If you’re driven to solve meaningful problems, leverage AI to scale rapidly, drive impact daily, and be part of a high-performance team – we should talk. Customer Success Manager We are looking for a Customer Success Manager to join our EMEA Customer Experience Team, working alongside Professional Services, Managed Services, Sales, Support, Product and Engineering to ensure our customers realize lasting value from th

About BlockTech BlockTech is a fast-paced algorithmic trading firm trading crypto derivatives and spot across global venues, 24/7, with our own capital. Crypto is one of the few markets where a researcher can still move the edge. The data is abundant, the microstructure is novel, and the loop between an idea and live PnL is short. High-frequency options trading is where we're strongest, and we're widening our scope to include more mid-frequency work. We're looking for a senior Quantitative Researcher with a mid-frequency background to join our Amsterdam trading floor. The role You'll be in charge of developing our mid-frequency capabilities, owning the research agenda end to end, from hypothesis and dataset construction through model training and backtesting to live deployment. You'll sit with traders, researchers, and analysts, and raise the bar for research across the floor. You will: Own price-prediction, signal, execution, and anomaly-detection models across crypto derivatives and spot markets from idea to live PnL Shape our research, backtesting, and trading infrastructure together with engineers, so good ideas reach production quickly and safely Own models in production: monitor live performance, diagnose decay, and iterate on what you ship Set research direction alongside traders, deciding which trades are worth making and why Raise the research bar by mentoring colleagues, reviewing work, and setting standards for rigour What we're looking for 3+ years of quantitative research experience at a hedge fund, trading firm, or similar, with mid-frequency models you've taken live A strong academic foundation in a quantitative discipline (mathematics, physics, statistics, or computer science) Fluency in Python and the modern ML stack (PyTorch and/or TensorFlow, scikit-learn, NumPy, pandas) A deep grasp of overfitting, validation design, and feature engineering. You can explain why a model works, not just that it does Software engineering instincts: you write product

About BlockTech BlockTech is a fast-paced algorithmic market maker at the frontier of cryptocurrency derivatives and spot markets, expanding into new markets. We employ algorithms to trade our own capital, 24/7, across some of the most data-rich venues in finance. For the Summer of 2027, we're looking for a Quantitative Research Intern to join our option pricing team in Amsterdam. The role This is an 8-10 week summer internship at our Amsterdam office, giving you a unique opportunity to work on an end-to-end project with a real and direct business impact. You’ll work in a small team and get the chance to understand how a trading firm actually works from the inside. You will: Participate in a customized training program that will give you an understanding of financial markets in general, the company and the project. Own a research project from design to deployment guided by experienced Quantitative Researchers. Understand how technology and research enable our trading, market data, and infrastructure systems Collaborate with fellow researchers and software engineers to bring your project to success Learn from the best, all while leveraging cutting-edge technology What we're looking for Currently in your (pen)ultimate year and enrolled in, or planning to pursue, at least a Master’s degree in a quantitative field at a top European university. Available full-time in Amsterdam, for a duration of 8 - 10 weeks over the summer of 2027, starting on the 5th of July Working knowledge of Python A critical mind that follows things until completion, high ownership, and clear communication in English What's in it for you? A summer internship in a relaxed and modern office in Amsterdam A dedicated mentor, a team of fellow interns and full-time quantitative researchers, an in-house training program, and exposure to how engineering, research, and trading actually work together The opportunity to work at the forefront of automated trading, in an environment that embraces AI to both ac

About BlockTech BlockTech is a fast-paced algorithmic market maker facilitating global derivatives and spot trading, originating from crypto markets and expanding into new markets. We trade our own capital on systems that run 24/7 and have to be fast and correct without exception. Our systems run on Linux and are written in Rust and Python. For the Summer of 2027, we're looking for Software Engineer Interns to join our engineering team in Amsterdam. The role This is an 8-10 week summer internship at our Amsterdam office, giving you a unique opportunity to work on an end-to-end project with a real and direct business impact. You’ll work in a small team and get the chance to understand how a trading firm actually works from the inside. You will Participate in a customized training program that will give you an understanding of financial markets in general, the company and the project. Own a project from design to deployment guided by experienced software engineers. Work with production-level data and systems Learn from the best, all while leveraging cutting-edge technology What we're looking for Currently in your (pen)ultimate year studying computer science or a related discipline at a top university in Europe Available full-time in Amsterdam, for a duration of 8 - 10 weeks over the summer of 2027, starting with 5th of July Proficiency in a systems language (ideally Rust and/orC++) and working knowledge of Python A solid grasp of data structures, algorithms, and what actually makes code fast A critical mind that follows things until completion, high ownership, and clear communication in English What's in it for you? A summer internship in a relaxed and modern office in Amsterdam A dedicated mentor, a team of fellow interns and full-time software engineers, an in-house training program, and exposure to how engineering, research, and trading actually work together The opportunity to work at the forefront of automated trading using state-of-the-art technology, in an envi

About BlockTech BlockTech is a fast-paced algorithmic trading firm facilitating global cryptocurrency derivatives and spot trading while expanding into new markets. As we continue to grow rapidly, we are looking for a Software Engineer to join our Foundation team amid our exciting scale-up phase! You will Build & optimize: Design, develop, and maintain high-reliability, low-latency, and high-throughput foundational systems that enable our trading and technology teams to scale efficiently. Ingest & aggregate: Collect trading business data with minimal latency impact and ingest both public and private exchange information into our trading system. Store & stream: Develop and maintain infrastructure for real-time data aggregation and long-term storage, as well as our Kafka-based messaging systems. Collaborate & support: Work closely with multiple teams, assisting them in integrating with and making the most of our foundational systems. Innovate: Drive projects from concept to deployment with full ownership, and explore new tools, frameworks, and approaches to keep our infrastructure best-in-class. The Foundation team develops core software infrastructure (libraries, frameworks, and systems) for BlockTech, solving common problems and lending its expertise to enable other teams to stay focused on their respective domains. They own, develop, and configure a wide variety of critical, high-reliability software, ranging from low-level ultra-low-latency shared memory IPC libraries to high-throughput data buses and data aggregation systems including Kafka, NATS, PostgreSQL, and Iceberg. They work primarily in Rust, but also use Python and SQL. If you thrive on low-level problem-solving, building robust frameworks from scratch, and enabling others to move faster, this role is for you. What We're Looking For Essential: 5+ years of experience as a Software Engineer, with a strong focus on systems-level optimisation and awareness of hardware constraints Proficiency

About BlockTech BlockTech is a fast-paced algorithmic trading firm facilitating global cryptocurrency derivatives and spot trading while expanding into new markets. As we continue to grow rapidly, we are looking for a Software Engineer to join our Core team amid our exciting scale-up phase! The role In this role, you will work on the systems that keep our trading operation accurate at every level, positions, PnL, instruments, hedging, and the data flowing between them. Across exchanges and asset classes, your work determines whether the numbers our traders and risk team rely on are correct. Own the books. Maintain and evolve our position, trade, and PnL systems so they remain accurate across every venue we operate on. Build the platform that supports trading. Design services that handle real-time exchange flow with the throughput and reliability on which our quoting and hedging depend. Own the data flows. Operate the public and private data pipelines that bring market prices, account state, and trade events into our systems in real time. Integrate new venues. Deliver exchange and prime-broker integrations end-to-end, protocol, account model, settlement, reconciliation, and surveillance. Model the instrument universe. Own the systems that describe every tradable instrument we trade, lifecycle, expiry, margin, RFQs, fast-path quoting, where both correctness and latency matter. Develop self-healing systems. Build the detection and repair flows that identify position discrepancies and correct them automatically. Build hedging infrastructure. Design and refine the gamma and delta hedging systems that our trading strategies depend on. Deliver reporting. Provide the data that internal stakeholders and regulators require, PnL breakdowns, trade surveillance, treasury accounting, and compliance. What we're looking for 1+ years of commercial working experience as a Software Engineer. We are looking for an engineer with breadth: someone comfortable moving between a Rust service

About the Role Together AI is building the AI Acceleration Cloud, an end-to-end platform for the full generative AI lifecycle, combining the fastest LLM inference engine with state-of-the-art AI cloud infrastructure. As a Lead/Manager, you will play a key role in building the Together cloud platform engineering team in the Netherlands. We are a highly available, global, blazing-fast cloud infrastructure that virtualizes cutting-edge ML hardware (GB200s/GB300s, BlueField DPUs) and enables state-of-the-art ML practitioners with self-serve AI cloud services, such as on-demand + managed Kubernetes and Slurm clusters. This platform serves both our internal SaaS products (inference, fine-tuning) and our external cloud customers, spanning dozens of data centers across the world. Some of what you’ll work on: Work on a distributed GPU scheduling system for the on-demand clusters product, Instant Clusters. Build out a global management plane for managing our data center compute, networking, and storage. Design and build new customer-facing cloud platform services, delivering killer enterprise AI cloud features. Hybrid working 2 days a week at our offices in Amsterdam Responsibilities Lead/Manage a team of 8 together cloud Infrastructure Engineer in Amsterdam, Identify, design, and develop foundational backend services that power Together’s commerce platform Analyze and improve the robustness and scalability of existing distributed systems, APIs, databases, and infrastructure Partner with product teams to understand functional requirements and deliver solutions that meet business needs Write clear, well-tested, and maintainable software and IaC for both new and existing systems Conduct design and code reviews, create developer documentation, and develop testing strategies for robustness and fault tolerance Participate in an on-call rotation to address critical incidents when necessary Requirements Ideally 1-2 years of leading the Infrastructure team. Demonstrable backgro

About the Role Together AI is looking for a Senior Network Engineer to design, deploy, and operate the global network infrastructure supporting our production services and high-performance AI compute environments. This is a hands-on engineering role for someone with deep networking expertise who can also troubleshoot across Linux, Kubernetes, automation, and application boundaries. You will work on large-scale, multi-vendor data center networks and help ensure they remain highly available, reliable, scalable, and performant. The ideal candidate has strong networking fundamentals, experience operating complex networks at scale, and a structured, evidence-based approach to troubleshooting. You should be comfortable owning problems from initial investigation through root cause and resolution, including situations where the issue may extend beyond the network itself. Requirements 8+ years of professional experience designing, building, and supporting large-scale production data center, cloud, service-provider, or high-performance computing networks (excluding enterprise networks). Deep understanding of TCP/IP and strong experience with technologies such as BGP, OSPF, VXLAN, EVPN, ECMP, and QoS. Experience designing and supporting multi-tenant network environments using technologies such as VRFs, VLANs, overlays, and policy-based segmentation. Hands-on experience deploying and troubleshooting network platforms from vendors such as Arista, Cisco, Juniper, and NVIDIA. Strong troubleshooting skills using tools such as Wireshark, tcpdump, MTR, curl, nmap, and standard Linux networking utilities. Ability to diagnose connectivity, latency, packet-loss, routing, and performance issues across the network, host, and application layers. Experience developing or maintaining network automation using Python, Ansible, or similar tools. Experience working through a Git-based software development lifecycle, including branching, code review, validation, linting, testing, CI/CD, de