Quantitative Developer

About Manna Manna, located in Amsterdam, specializes in large-scale, performance-driven lead generation. The company purchases traffic on platforms like Meta and Google, using proprietary funnels to deliver qualified leads to enterprise partners in sectors such as hearing care, home improvement, insurance, and meal delivery throughout the EU and North America. The in-house platform, LeadExpert, powers these operations by routing, validating, and managing every lead. This system is central to Manna's technical edge in the industry. Role Overview: Fullstack Developer Manna is expanding its engineering team to support a roadmap focused on new platform features, deeper partner integrations, and AI-driven enhancements. The Fullstack Developer will take ownership of significant roadmap items, with the chance to influence both revenue and the company’s move toward an AI-first approach. What You Will Do Develop new platform features from idea to production, always considering operational priorities. Integrate AI solutions by deploying production-ready LLM integrations within the platform and related tools. Handle API and data integrations, connecting partner endpoints, webhooks, and CRM systems smoothly. Maintain platform reliability by identifying root causes of issues and supporting consistent release cycles. Improve the system with thorough bug fixes and structural updates. Take full-stack responsibility, focusing mainly on backend work (PHP/MySQL) and enhancing the admin UI (HTML/CSS/JS, currently jQuery). Offer technical guidance, sharing insights on architecture, tooling, and AI-related decisions. Location This role is based in Amsterdam, Noord-Holland, Netherlands.

Join us at Databricks, where our mission is to empower data teams to tackle some of the world's most significant challenges — from revolutionizing transportation to accelerating medical advancements. We achieve this by developing and operating the premier data and AI infrastructure platform, allowing our customers to harness profound data insights to enhance their businesses. Founded by engineers and driven by a customer-centric philosophy, we eagerly embrace every chance to overcome technical hurdles, whether that's crafting next-generation UI/UX for data interaction or scaling our services across millions of virtual machines. And this is just the beginning. Unlike conventional enterprise software, we create and build innovative SaaS products that delight all stakeholders: decision-makers, administrators, and end-users. As a Senior Fullstack Software Engineer, you will collaborate closely with your team and product management to deliver exceptional user experiences. Here are a few of the dynamic teams you could become a part of: SQL Analytics Console: This new product provides Databricks customers with a top-notch experience for Business Intelligence (BI) and executing SQL workloads directly on the data lake. Our team develops the console for SQL Analytics, where users configure, manage, and monitor their SQL usage.Jobs and Workflows: This team supports all asynchronous customer workloads for Databricks, which constitute the majority of our usage. As this demand has surged, we have restructured the system to enhance stability and scalability, while also introducing exciting new features for advanced workflows and customer observability. This team combines frontend, backend, and reliability engineering skills across various projects.Developer Ecosystem: Focused on enhancing the development experience and best practices with external tools, we oversee the core open-source components of the developer ecosystem: the SDK, CLI, and Terraform.Apps Developer Experience: This team is dedicated to making application development on Databricks seamless and enjoyable. We have built an SDK and services tailored for app developers, including our AppKit. Our Codegen sub-team develops tools that ensure apps function perfectly from the start. We are also working on an MCP server for Cursor/Claude Code and developing Skills.

Dataiku is the premier Platform for AI Success, acting as the enterprise orchestration layer for the development, deployment, and governance of AI initiatives. Our platform enables teams to design and operate analytics, machine learning, and AI agents within a cohesive environment that ensures transparency, collaboration, and control, essential for enterprises. Positioned above data platforms, cloud infrastructure, and AI services, Dataiku integrates the entire enterprise AI stack, empowering organizations to implement AI across diverse vendor environments with centralized governance.Top global companies trust Dataiku to operationalize AI, transforming it into a vital business performance engine that delivers tangible value. Discover more by visiting the Dataiku blog, LinkedIn, X, and YouTube.Why Join Engineering at Dataiku?At Dataiku, our platform can be deployed on-premise, in the cloud, or as a SaaS solution, integrating a wide array of data science technologies. Our commitment to quality and innovation is reflected in our technology stack, where we select tools that genuinely enhance our product. You will engage with a dynamic range of technologies, from the latest LLMs to our contributions to open source communities, and help expand the collective knowledge of global tech innovators. Learn more about life in Engineering at Dataiku here.Within Business Solutions, we are developing applications that leverage Dataiku's capabilities in data and AI, focusing on key enterprise use cases that require user-centric UIs and workflows. We cater to various industries, including Manufacturing, Life Sciences, and Finance, enhancing critical processes within their business and operational models. In essence, our work embodies the spirit of 'everyday AI'!Your ImpactInnovative AI-Driven Applications: Design, develop, and deploy AI-powered applications that tackle intricate business challenges.

Dataiku is the leading platform for AI success, providing an enterprise orchestration layer for developing, deploying, and governing AI. Within a unified environment, teams can craft and manage analytics, machine learning, and AI agents with the transparency, collaboration, and governance that enterprises demand. Dataiku sits above various data platforms, cloud infrastructures, and AI services, seamlessly connecting the entire enterprise AI stack—enabling organizations to implement AI across diverse environments with centralized oversight.The world's foremost companies depend on Dataiku to operationalize AI, transforming it into a genuine business performance engine that delivers quantifiable value. Explore more about us through the Dataiku blog, LinkedIn, X, and YouTube.Why Join the Engineering Team at Dataiku?At Dataiku, our platform—whether deployed on-premise, in the cloud, or as SaaS—integrates a myriad of data science technologies, reflecting our unwavering commitment to quality and innovation. We harness the best data and AI technologies, selecting tools that genuinely enhance our product. From cutting-edge LLMs to our dedication to open-source communities, you will have the opportunity to work with an exciting array of technologies while contributing to the collective knowledge of global tech pioneers. To learn more about our engineering culture, check out this link.For additional insights into Dataiku’s offerings, explore: Key Capabilities; GitHub; and the Gallery, showcasing example projects (note that editing is limited and regularly reset).Our flagship product, Dataiku DSS (Data Science Studio), is at the forefront of our mission. Interested in seeing it in action? Watch our demo here.

P-1320 At Databricks, we are dedicated to empowering data teams to tackle the most pressing challenges facing the world today. From revolutionizing transportation to advancing medical innovations, we achieve this by developing and maintaining the leading data and AI infrastructure platform. Our customers leverage deep data insights to enhance their operations and drive growth. Founded by engineers who are obsessed with customer success, we eagerly embrace every opportunity to address technical challenges — whether it’s creating next-gen UI/UX for data interactions or scaling our services across millions of virtual machines. We’re just getting started! Unlike conventional enterprise software, we craft modern SaaS products that bring satisfaction to all stakeholders: decision-makers, administrators, and end-users alike. As a Fullstack Software Engineer, you will collaborate closely with your team and product management to deliver exceptional user experiences. Here are a few teams you might join: SQL Analytics Console: This innovative product offers Databricks customers a superior experience for Business Intelligence (BI) and executing SQL workloads directly on the data lake. Our team develops the console for SQL Analytics, enabling users to configure, manage, and monitor their SQL activities. Jobs and Workflows: This team supports all asynchronous customer workloads for Databricks, which constitutes the majority of our usage. As this demand has surged, we have reengineered the system for enhanced stability and scalability, while also introducing exciting new features for advanced workflows and customer observability. Our projects encompass a diverse skill set, including frontend, backend, and reliability engineering. Developer Ecosystem: Focused on improving the development experience, this team governs the core open-source components of our developer ecosystem, which includes the SDK, CLI, and Terraform. Neon Backend as a Service: Responsible for transforming Neon.com into more than just a database, this team provides essential services that empower developers and AI agents to build full-stack applications seamlessly on our platform (auth, data API, email, etc.). Our focus is on designing the foundational elements that will drive the next generation of AI agents and developer workflows.

Are you ready to revolutionize the mortgage industry with innovative technology?At Frits, we believe that mortgage advice can be fundamentally improved. Gone are the dusty reports and lengthy conversations; we utilize intelligent technology to make complex choices understandable for everyone. Generative AI plays a pivotal role in shaping the future of Frits' mortgage advice.As a Fullstack TypeScript AI Engineer, you will translate state-of-the-art LLM technology into robust, secure solutions that empower clients and accelerate mortgage advisors. Given the significant financial implications for clients and stringent regulations, our quality standards are exceptionally high. With the complexity of the subject matter and our ambition to bring generative AI directly to consumers, you will be working at the forefront of what is technologically possible.Your ResponsibilitiesIn your role as Fullstack TypeScript AI Engineer, you will be central to implementing LLM applications within Frits' mortgage advisory platform. You will ensure that intelligent technology provides tangible value to both clients and advisors. Collaborating closely with fellow developers, AI specialists, and mortgage and compliance experts, you will develop AI solutions that are comprehensible, reliable, and effective.Full stack development: Engage in software development across both the front and back end of our AI application stack.Front-end thought leadership: While our multidisciplinary team operates as full stack, each member brings deep expertise in a specific area. You will be our front-end thought leader, elevating user experience, performance, and visual consistency of our applications.Prompt design: Design, test, and optimize effective prompts and guardrails to ensure AI models produce consistently useful, safe, and relevant outputs.Evaluation & quality assurance: Design and implement tests (in collaboration with mortgage experts) for the LLM systems based on extensive test datasets.Monitoring & continuous improvement: Analyze production traces, logs, metrics, and user feedback to identify issues and optimize performance.Collaboration: Work closely with mortgage advisors, compliance officers, fellow developers, and AI specialists to translate domain-specific knowledge, business logic, and compliance requirements into effective LLM solutions.Why Join Us?Make a significant impact from day one: As a Fullstack TypeScript AI Engineer at Frits, you will have the opportunity to leave your mark from the start. No minor optimizations here, but transformative advancements.

Join ProctorExam as a Back-End/Fullstack Software Engineer and become a vital part of our innovative team dedicated to enhancing online examination processes. In this role, you will collaborate with our talented developers to design, build, and maintain robust web applications that ensure a secure and seamless user experience. If you're passionate about software development and eager to make a difference in the e-learning space, we invite you to apply!

Join our innovative team at Onramper as we revolutionize fiat-to-crypto transactions!We are a dynamic scale-up based in the Netherlands, dedicated to facilitating access to web3 by connecting fiat currencies (Euros, Dollars, and more) with cryptocurrencies.Our cutting-edge embeddable widget and API empower crypto-native wallets, enabling users to purchase cryptocurrencies globally through over 130 payment methods.Our technology is trusted by industry leaders such as Coinbase, Exodus, and Opera browser, and utilized by hundreds of platforms within their fiat onramping solutions. We partner with top fiat-to-crypto payment gateways, streamlining the process so users can easily buy crypto within their platforms. This intersection is crucial for the future of web3 and the metaverse.We are on the lookout for a Fullstack Engineer who possesses a passion for developing modern web platforms and a drive for personal growth and innovation. In this role, you will take the lead on some of the core components of our platform as part of a collaborative, cross-functional team.

About UsScaler is an innovative sustainability data platform designed specifically for the real estate sector. Our mission is to empower real estate managers and investors with the critical data they require to safeguard asset value, comply with reporting mandates, and mitigate long-term risks.The RoleWe are seeking a Senior Fullstack Engineer who will play a pivotal role in developing new products and features from inception to deployment. You will collaborate closely with product management and design teams to transform complex data into intuitive tools that clients utilize every day. Additionally, you will contribute to establishing code review standards and architectural decisions that maintain a robust and scalable codebase as our team expands. This position is ideal for individuals eager to influence product development rather than just execute tasks from a backlog.What You'll DoDesign and deploy comprehensive full-stack features within a data-centric platform utilized by real estate investment teams.Develop and oversee features that leverage Large Language Models (LLMs) in production, including Retrieval-Augmented Generation (RAG) pipelines, LLM integrations, safeguard parameters, and evaluation frameworks.Lead architectural decisions concerning backend systems built to accommodate ongoing increases in data volume and client demand.Establish engineering standards across code reviews, testing, monitoring, and observability practices.What You'll BringAt least 6 years of fullstack engineering experience with a proven history of delivering production systems.Extensive expertise in Python and JavaScript/TypeScript, coupled with strong proficiency in CSS.Hands-on experience with LLM integration, including prompt engineering, RAG pipelines, function calling, evaluations, or safeguard measures.Familiarity with one or more frameworks such as FastAPI, Laravel, Vue.js, Tailwind CSS, ECharts.Demonstrated ability to work with large, intricate datasets and create systems that present data clearly.Experience with web metrics, monitoring, and observability tools.Strong foundation in data structures and algorithms as applied to real-world engineering challenges.Ability to thrive in a small, agile team environment and take ownership of outcomes beyond just ticket completion.Our Tech StackFront-end: Vue.js, Tailwind CSS

Building a Better Future. At Dura Vermeer, we are committed to creating healthy living and working environments where sustainability, mobility, and social cohesion converge. To support our ambitious growth, we are seeking a skilled Technical Developer – also known as a Project Developer – to join our team in Amsterdam. We are looking for a versatile professional who can comprehensively manage both the development process and design trajectory. Are you eager to contribute to sustainable area developments such as Park Valley in Diemen, Rootz in Haarlem, or Victoriapark in Hoofddorp? If so, we would love to meet you!Your RoleAs a Technical Developer at Dura Vermeer Bouw en Vastgoed Amsterdam, you will oversee the entire process of real estate and area development: from initiative to handover to the execution team. You will bridge the worlds of development and design, acting as the central point of contact between municipalities, investors, designers, advisors, construction partners, and our internal team.Your strength lies in combining creative thinking with technical insight. You excel at translating innovative concepts into feasible and executable plans, ensuring that quality, sustainability, costs, time, and safety are prioritized throughout the process.Key ResponsibilitiesDevelopment & Design:You will coordinate and integrate the entire development and design process, from concept to handover. This includes urban studies, architect selections, feasibility analyses, and significant technical plan elaborations.Team Coordination:You will manage architects, structural engineers, installation consultants, and other stakeholders during tender and preliminary design phases. You will establish clear frameworks and foster optimal collaboration among all parties involved.Financial & Commercial:You will prepare land and real estate exploitations, conduct risk analyses, and negotiate the best deals with stakeholders. You will maintain budget control and safeguard commercial opportunities.Stakeholder Management:You will be the primary contact for municipalities, housing corporations, investors, and other external stakeholders, nurturing and expanding relationships naturally.Collaboration with Execution:From the initial phase, you will work closely with our project managers and execution teams to ensure that designs are feasible and profitable.Make Your ImpactWe are developing sustainable environments and are looking for passionate individuals to join us.

Join p3-parks as a Development Specialist, where you will play a pivotal role in enhancing our park development initiatives. Your expertise will contribute to innovative projects that promote sustainability and community engagement. We are looking for a dynamic individual who is passionate about park development and has a vision for creating natural spaces that benefit all.

At Monks, we prioritize your safety. We will never ask for payment or banking information during the recruitment process. As we expand our teams, please be vigilant against fraudulent job postings or recruitment activities that misuse our name. Protect your personal information throughout the recruitment journey. While we may reach out to candidates via LinkedIn, all applications must be submitted through our official website (monks.com/careers).Monks is actively seeking exceptional Freelance Backend Developers to enhance our projects for Q3 & Q4! If you are proficient in .NET, Java, or Python, and possess practical experience with GCP and infrastructure, we would love to connect with you.Please note: Applicants must be Dutch nationals.Are you ready to engage in thrilling, diverse projects and leave your mark? Join us today—let's create something extraordinary together!About MonksMonks is the global, digital-first, data-driven operating brand under S4 Capital plc. With a legacy of innovation, we combine extensive global marketing and technology services to redefine brand interactions. Through our flagship AI ecosystem, Monks.Flow, we transform marketing into a growth engine, connecting brands to culture in real-time while delivering impactful creative solutions. We address critical business challenges, helping brands achieve sustained long-term success.Monks has been recognized as a Contender in The Forrester Wave™: Global Marketing Services, ranks among Cannes Lions' Top 10 Creative Companies (2022-25), and is featured annually in AdExchanger’s Programmatic Power Players list (2020-24). Additionally, we were honored as Adweek’s first AI Agency of the Year (2023) and received multiple awards for excellence in artificial intelligence.

Join our innovative team at Pinely as a C++ Developer Intern in Amsterdam! This internship offers a unique opportunity to collaborate with seasoned software engineers within our Software Development group. You will gain practical experience tackling complex challenges in multi-threaded and distributed computing, optimizing hardware performance, and maximizing throughput across our computational cluster utilizing cutting-edge modern C++. Engage in exciting projects focused on low-latency trading systems and advanced system optimization techniques.The internship duration is flexible, ranging from 3 to 6 months, based on team needs and intern availability. Successful interns may have the chance to transition into a full-time role at Pinely.

Join JetBrains as a Game Development Solutions Architect, where you will leverage your expertise in game development to create innovative solutions. Collaborate with cross-functional teams to design, implement, and optimize game development tools that enhance productivity and creativity. Your role will involve engaging with clients to understand their needs and delivering tailored solutions that drive success.

Join our innovative team at dev2 as a Senior Backend Developer specializing in AdTech. In this role, you will be responsible for designing and implementing robust backend systems that drive our advertising technology solutions. You will work closely with cross-functional teams to ensure seamless integration and performance of applications.

Are you passionate about tackling challenging technical projects across the Java spectrum? If so, Centric is the perfect fit for you. Our assignments are diverse: one day you might be developing an advanced web application for a booking website, and the next, you could be working on a portal for a health insurance provider. As a Full Stack Developer at Centric, you will have the opportunity to continuously enhance your skills and grow within your profession.Your ResponsibilitiesYou will immerse yourself in the world of Java, developing up-to-date applications using frameworks such as Spring, JPA, Hibernate, JavaEE, Angular, and React, along with build tools like Maven. Your effectiveness will be demonstrated by applying your knowledge and experience to satisfy client needs.Additional Duties Include:Setting up CI/CD environments using JenkinsImproving quality with tools such as SonarQube and version control using GitLabConducting tests with JUnit, Spring Test, or MockitoFacilitating data exchanges via gRPC, SOAP, and REST calls, and building solutions within a cloud-based microservice architecture.As a Full Stack Developer, you will be employed by Centric and deployed to one or more client sites, all within a maximum of one hour from your home. This variety will expose you to numerous organizations, assisting your continuous development in your field. You will collaborate with your Field Manager to create a personalized development plan outlining the courses, training, and assignments that align with your career aspirations. Finally, you will join our center of expertise, where knowledge sharing and peer coaching are paramount.What We OfferAt Centric, we provide a dynamic environment where you can leverage your skills on various challenging projects with exciting clients. You will have the opportunity to learn continuously and grow in a setting that is at the forefront of the latest developments. As a Full Stack Java Developer, you can expect:A gross salary of up to €5,600 per month, depending on your knowledge and experienceA profit-sharing scheme of up to 50% of the average gross monthly salaryA productivity bonusThe option to work from home and maintain a healthy work-life balance, as you can determine your weekly scheduleExtensive training and development opportunities26 vacation days, 8% vacation allowance (paid in May), and loyalty days: the longer you stay with us, the more free time you gainA contribution towards your pension and discounts on your collective health insuranceA company laptop and phoneA home office allowance of €15

In het kortBij Sprints & Sneakers krijg je de unieke kans om een directe impact te maken in onze organisatie. Je zult intensief samenwerken met onze Business Development Specialist en de oprichter, waarbij jouw ideeën en inbreng cruciaal zijn voor de groei van ons bureau. Je speelt een essentiële rol in het verder ontwikkelen van ons salesproces en het realiseren van innovatieve concepten door gebruik te maken van technologieën zoals AI. Dit is jouw kans om je sales- en marketingvaardigheden naar een nieuw niveau te tillen en actief bij te dragen aan ons succes.Over Sprints & SneakersSprints & Sneakers is een B-Corp gecertificeerde growth marketing agency met kantoren in Amsterdam en Groningen. Wij helpen missiegedreven merken om duurzame groei te realiseren door middel van data-gedreven experimenten, technologie, AI en creativiteit. Ons doel is het ondersteunen van bedrijven die een positieve impact op de wereld willen maken. Ons multidisciplinaire team, dat bestaat uit data-experts, growth marketeers en AI-specialisten, optimaliseert de volledige customer journey, van merkbekendheid tot merkambassadeurschap. Als de eerste B-Corp Growth Agency van Nederland, zetten we ons in voor positieve impact en sluiten we aan bij de 17 Duurzame Ontwikkelingsdoelen van de VN. Onze ethos van 'Growth for Good' staat centraal in alles wat we doen. Met een frisse, no-nonsense cultuur, symbolisch weergegeven door 'sneakers' in plaats van maatpakken, brengen we de energie van startups naar zowel grote organisaties als gedurfde startups.Onze KernwaardenBij Sprints & Sneakers hechten we veel waarde aan eerlijkheid in alles wat we doen. We geloven in de kracht van voortdurende groei en leren, zowel professioneel als persoonlijk. Het opbouwen van waardevolle relaties is essentieel in ons werk, omdat we geloven dat samenwerking en wederzijds respect de sleutel tot succes zijn. We nemen verantwoordelijkheid voor ons werk en zorgen ervoor dat we altijd het beste uit onszelf halen.Onze focus ligt niet alleen op het werk, maar ook op het creëren van een blijvende impact. We streven ernaar om alles wat we doen memorabel te maken, zowel voor onszelf als voor onze partners. Dit betekent hard werken, maar ook genieten van het proces en van de groei die we samen doormaken.Jouw Impact in deze RolGeen dag is hetzelfde, maar je zult je vooral richten op het ontdekken van nieuwe kansen voor Sprints & Sneakers. Je onderzoekt markten en identificeert potentiële partners, terwijl je werkt aan het structureren van ons salesproces en het implementeren van innovatieve strategieën.

dept offers an internship for a Backend Developer in Amsterdam or Rotterdam. This position gives aspiring developers the chance to gain hands-on experience and learn from seasoned professionals. Role overview The internship centers on supporting backend development for active projects. Interns will join a team of experienced colleagues and take part in real-world software work. What you will do Assist in building and maintaining backend systems for ongoing projects Collaborate with a team of skilled professionals Share ideas and contribute code to development efforts

At Speakap, we are on a mission to revolutionize communication for frontline and deskless workers through our innovative mobile-first Employee Experience Platform. Our platform empowers over 600 clients and 400,000 users in diverse sectors such as retail, hospitality, and healthcare to stay connected, informed, and engaged directly from their smartphones, eliminating the need for traditional email and desktop communications.If you have a passion for crafting clean, scalable, and secure code and enjoy tackling challenges while bringing creative ideas to life, we invite you to join our dynamic team. Help us redefine the future of work and connectivity.What You Will DoYour main responsibility will be to develop and enhance our API, which serves as the backbone of our platform, facilitating communication between web frontends, mobile applications, and third-party services.Collaborate with cross-functional teams to implement new features and enhance existing ones.Ensure the security and performance of our services under all conditions.Engage in architectural discussions to influence technology choices and problem-solving strategies.What You’ll BringA Bachelor’s or Master’s degree along with over 5 years of experience in building scalable, high-performance, multi-tier software while adhering to SOLID principles and design patterns in an agile environment.A strong collaborative spirit, excellent problem-solving abilities, and a commitment to writing clean, maintainable code.Proficiency in PHP 8, ECMAScript 10+, TypeScript, modern frameworks (Symfony 6+ preferred), Docker, CI/CD, Git, and shell scripting.Experience with relational databases (MySQL, MariaDB), automated testing (PHPUnit, Behat), and performance monitoring with DataDog.Familiarity with AWS services (S3, SQS, Lambda, etc.), Linux environments, and network protocols; knowledge of Elasticsearch, Java (8/9), Redis, Lua, NGINX, or OAuth 2 is a plus.A passion for automation, ensuring thorough test coverage, and optimizing repetitive tasks for efficiency.What We OfferAt Speakap, we are more than just a workplace; we are a supportive team that values your growth, ideas, and well-being.