Senior Backend Developer in AdTech

Join DEPT® as a Senior Frontend Developer (m/f/d) in Amsterdam, HybridAt DEPT®, we are a Growth Invention company dedicated to empowering the world's most ambitious brands to accelerate their growth. With a team of over 4,000 specialists, we operate at the dynamic intersection of technology and marketing, providing innovative growth services in Brand & Media, Experience, Commerce, CRM, and Technology & Data. Our esteemed clients include industry leaders such as Google, Lufthansa, Meta, eBay, and OpenAI. Since 2021, we have proudly held B Corp and Climate Neutral certifications.This position is within our Experience & Engineering team located in the Netherlands. We merge our technical prowess with exceptional design capabilities to craft stunning digital experiences that foster enduring client relationships with brands like Gant, Inter Milan, bol.com, and Just Eat Takeaway.JOB PURPOSEWe are seeking a passionate Frontend Developer who excels at transforming high-fidelity designs and clear acceptance criteria into polished, performant, and accessible digital experiences. Your contributions at DEPT® will directly influence the forefront of global digital platforms, where visual excellence, responsiveness, and accessibility are paramount. Collaborating with multidisciplinary teams, you will create frontends that not only meet current standards but also anticipate future expectations.

Join our innovative team at Devoteam as a Senior Frontend Engineer specializing in Dutch-speaking environments. In this role, you will lead the development of cutting-edge web applications, collaborating closely with cross-functional teams to deliver exceptional user experiences. Your expertise in frontend technologies will drive our projects forward, ensuring high-quality code and robust functionality.

DEPT® is a Growth Invention company that partners with well-known brands worldwide. The team includes more than 4,000 specialists delivering services in Brand & Media, Experience, Commerce, CRM, and Technology & Data. Clients include Google, Lufthansa, Meta, eBay, and OpenAI. Since 2021, DEPT® has held both B Corp and Climate Neutral certifications. This Frontend Developer Internship is part of the Experience & Engineering team based in Amsterdam or Rotterdam. The team blends technical expertise with design to create digital experiences for brands such as Gant, Inter Milan, bol.com, and Just Eat Takeaway. What you will do Take part in the DEPT® Campus talent program, where hands-on projects help build frontend development skills. Attend professional training sessions, masterclasses, and workshops that introduce the latest technologies. Receive guidance from a dedicated mentor who offers coaching and feedback tailored to your growth. Work alongside a group of over 40 developers, sharing knowledge and supporting each other's progress. Contribute to real development work from day one, no coffee runs or administrative chores. Requirements Currently living and studying in the Netherlands. This is a requirement for the internship.

airapps is looking for a Frontend Web Developer in Amsterdam. This position centers on building web applications that are both visually appealing and easy to use. Working alongside designers and backend developers, the goal is to deliver smooth, high-quality experiences for users on a range of devices. What you will do Develop and maintain web interfaces using HTML, CSS, and JavaScript Collaborate with design and backend teams to implement new features Focus on performance and usability for both mobile and desktop platforms What we value Creativity in solving design and technical challenges Strong technical skills in modern frontend development Enthusiasm for learning new tools and technologies This role is ideal for someone who enjoys working in a collaborative setting and wants to help shape the user experience at every stage of development.

Join Our Team at AND Digital!At AND Digital, we are a forward-thinking tech company dedicated to enhancing digital product delivery while bridging the digital skills gap. Since our inception in 2014, we have empowered organizations to create superior digital products and cultivate robust digital teams.Our commitment to delivering exceptional value manifests through our regional offices—known as 'Clubs'—where we foster strong partnerships with clients, ensuring they receive unparalleled attention and support. This distinctive approach has fueled our impressive growth trajectory and solidified our place in the industry, with over 1,300 passionate professionals across the UK, Europe, and the USA, and ambitious plans for global expansion.Your Role as a Frontend DeveloperAs a Frontend Developer specializing in Vue.js, you will play a crucial role in crafting outstanding digital products within Agile frameworks. Your expertise in JavaScript will be instrumental as you:Collaborate on large-scale projects across various sectors, including eCommerce and enterprise-level software development, utilizing technologies such as Vue.js and JavaScript.Advocate for software quality and technical excellence for AND and our clients.Promote best practices in software development methodologies, including TDD, BDD, and XP.

About Us:Join Planner 5D, a dynamic global leader in home design, connecting over 100 million users across 230 territories, including monthly visitors from Antarctica! Our innovative platform revolutionizes the home renovation journey, making it accessible and straightforward through our state-of-the-art software. You don't need to be a professional designer to create stunning spaces; we empower everyone to personalize their homes or workspaces seamlessly using our tools. Explore our resources to enhance your design skills.Our cross-platform solutions are available on Web, iOS, Android, Windows, and MacOS, ensuring a unified experience for our users. At Planner 5D, we foster a vibrant community of passionate and innovative professionals from diverse backgrounds, collaborating across time zones to redefine the home design industry.We continuously seek talented individuals who are enthusiastic about taking ownership and driving innovation within our evolving suite of tools. Join us in shaping the future of home design.As a Frontend Developer, you will share our dedication to writing clean, maintainable, and efficient code using JavaScript and TypeScript. Your primary responsibilities will include enhancing and refactoring existing code, writing comprehensive tests, and ensuring the performance and stability of our product. We predominantly utilize an object-oriented programming (OOP) approach, adhering to strict coding standards and technical requirements.Our Tech Stack: PHP 7.4(8.1), Symfony, PHPUnit, MySQL, Redis, MongoDB, RabbitMQ, Git, Docker.For frontend development: Native JavaScript, jQuery (legacy code), TypeScript, Three.js (OpenGL), SVG, Canvas, WebGL, Webpack, WebSocket, Jest (unit tests), Docker.

About the RoleAs a Senior Learning & Development Advisor, you will play a pivotal role in redefining, innovating, and implementing our L&D programs. Collaborating closely with two other Learning Advisors, you will naturally take on a coordinating and guiding role within the team. This is a significant position with an impact on all levels of the organization, from junior lawyers to partners and business professionals. You will critically analyze existing programs and enhance their focus, coherence, and quality. Translating organizational objectives and strategic developments into concrete learning interventions, you will operate data-driven while ensuring practical applicability. Your responsibilities include:Redesigning and harmonizing existing learning and development programs, with clear learning objectives and measurable impact.Collaborating with the Lead Talent Development to develop a sustainable L&D architecture that aligns with De Brauw's strategy and culture.Translating organizational goals into actionable learning interventions and development pathways.Overseeing the implementation and rollout of updated programs.Advising partners, managers, and HR on strategic development issues.Selecting and managing external training partners and trainers.Evaluating and optimizing programs based on feedback and data analysis.Combining conceptual thinking with execution capacity: knowing when standardization is required and when customization is appropriate. Who Are You?We are looking for an experienced professional with a proactive and analytical mindset. You combine strategic insight with practical execution and have experience with complex learning trajectories within professional organizations, preferably in the legal or business services sector. Additionally, you possess:A completed relevant university degree (such as educational science or similar).A minimum of 5 to 8 years of experience in Learning & Development.Proven experience in redesigning and implementing extensive learning and development programs.Experience in stakeholder management at senior levels.Knowledge of modern learning principles, blended learning, and digital learning solutions (LMS/LXP).Strong analytical skills and experience in measuring the impact of learning interventions.Independence, proactivity, and the ability to provide guidance without formal hierarchical authority.Excellent communication skills in both Dutch and English.Content sharpness, carefulness, and persuasiveness; you are not afraid to critically evaluate existing programs and implement improvements.The ability to navigate easily within a complex organizational context, balancing interests and people.

At funda, we believe you have it all.As a Frontend Engineer, you possess a holistic view of development. You’re not just skilled in coding; your creativity and precision shine through in your work with frameworks like Vue and Nuxt. While you may not identify as a full-stack engineer, your technical acumen allows you to engage confidently in discussions about API schemas and architectural strategies. If this resonates with you, we would love to hear from you!Your role in a nutshellYour day may begin with finalizing a pull request that enhances SSR performance on our homepage, ensuring a swift user experience during peak traffic. After a brief collaboration with a fellow Frontend Engineer, you’ll participate in a strategy meeting for an upcoming A/B test concerning a new filtering feature. You will align on technical approaches before diving into a fix for a minor UI bug at a specific breakpoint. And yes, there’s always time for lunch before you review a few pull requests.Your responsibilitiesAt funda, your code will touch the lives of millions searching for their dream homes. We are looking for someone with the following superpowers:Develop and maintain user interfaces serving millions.Collaborate seamlessly with your product team (design, backend, QA, product) within a Scrum framework.Review code and provide constructive feedback on pull requests.Contribute to the overarching frontend architecture and standards, ensuring consistency and quality.

NLR (Netherlands Aerospace Centre) is looking for an R&D Engineer GNSS and Navigation (m/f/x) to join its Amsterdam team. This position centers on satellite navigation for both civilian and military uses, aiming to improve the safety and intelligence of navigation systems. Main Responsibilities Collaborate with colleagues to research, develop, and test Position, Navigation, and Timing (PNT) solutions. Process GNSS signals and examine how jamming and spoofing affect navigation systems. Apply Software Defined Radios to study GNSS receiver processing and methods to counter interference. Design and conduct tests to assess PNT equipment under GNSS jamming and spoofing scenarios. Share research results with colleagues, clients, and stakeholders through presentations. Sample Projects and Tasks Explore GNSS receiver techniques and contribute to the department’s technical expertise. Analyze vulnerabilities from GNSS disruptions and build skills in interference detection. Test PNT solutions using GNSS simulators or at the NLR Drone Center. Create PNT systems and tools to help clients detect and locate interference. Collaboration The team partners with a wide range of clients, including government agencies (especially in defense), industry partners in the Netherlands and abroad, research institutes, and universities. Regular communication and providing well-supported advice are important aspects of this role.

WPP Media is the global media collective of WPP. We unite the best platforms, talented individuals, and strategic partners to create innovative solutions that drive brand growth every day. Our core values form the foundation of everything we do: We’re Extraordinary: we push boundaries and challenge the status quo. We’re Open: we collaborate with trust and transparency. We’re Optimistic: we believe in growth, innovation, and progress. As a part of WPP, we accelerate the evolution of media in an increasingly digital and AI-driven landscape. Within this ecosystem, we elevate (Digital) Out-of-Home advertising, and we need you to help us do it. Are you the content anchor within our (D)OOH practice?As a Senior (D)OOH Specialist, you are the content expert who elevates the quality and execution of our (D)OOH work. You lead complex campaigns, serve as a go-to resource for specialists, and ensure our processes are consistent, efficient, and of high professional standards. You act as a sparring partner for clients, client teams, strategists, and practice leads, blending analytical insight with practical application. You are the quality guardian within the team and assist your colleagues in growing their expertise. You translate market developments into tangible improvements in processes, tools, and formats, taking ownership of the daily content development within the channel. You merge precision with expertise, execution with depth, and coaching with exemplary behavior. Your impact on clients As a Senior Specialist, you play a pivotal role with our largest (D)OOH clients, being responsible for content quality and growth. Relationship and channel maturity: building sustainable client relationships and serving as a content sparring partner for client teams and strategists. Channel strategy & annual planning: developing yearly plans and ensuring their successful implementation. Pricing and negotiations: negotiating rates alongside the Trading/Investment Director. Training and knowledge sharing: developing and delivering client or agency training sessions, ensuring quality in knowledge dissemination. Inspiration and positioning: optimizing landscape and channel presentations for clients. Your impact on the (D)OOH practiceWithin WPP Media, you are also a driving force behind growth, quality, and innovation.

At bunq, we're not merely developing a banking application; we are revolutionizing the global perception of financial freedom. As a Frontend Engineer, you will play a pivotal role in enhancing our user experience by creating beautiful, speedy, and reliable web interfaces that users engage with daily. Your mission is to develop a top-tier web platform that establishes a benchmark for the fintech industry.Own Your CraftIn the role of Frontend Engineer, you will be responsible for the technical excellence and execution of our web applications, propelling our user experience forward.You will take complete ownership of the bunq web architecture, continually designing, updating, and maintaining it while integrating the latest industry best practices to reduce technical debt.Deliver dependable, tested, and documented frontend features at a rapid pace and contribute significantly to our transition to a new frontend framework by porting features with minimal support.Serve as a technical leader within the team, enhancing the engineering culture by mentoring colleagues, advocating for code quality, and leading technical discussions.

Are you an ambitious young professional looking to apply your knowledge to make a significant impact on learning and performance in both military and civil aviation? We have the perfect challenge for you! Your RoleAs an R&D Engineer specializing in Training and Development, you will work within the training and simulation sector focused on (military) aviation. Your primary objective will be to investigate how to structure learning in the most effective and personalized manner, aiming to enhance performance in critical situations.This includes analyzing learning needs, designing training programs, developing innovative learning tools, expediting the readiness of military personnel, intelligently utilizing learning data, and integrating Artificial Intelligence into learning processes. Collaborating with a dynamic, multidisciplinary team, you will help shape the future of learning, with ample opportunity for your ideas, talents, and growth. Your Responsibilities Include:Analyzing learning and training needsDeveloping selection tools to support effective training intakeInvestigating the application and integration of innovative learning technologies while formulating functional requirements for (digital) training resourcesInterpreting learning data and contributing to the improvement of training designSetting up research, gathering and analyzing data, and translating results into actionable improvementsPresenting your findings at (international) meetings and contributing to knowledge sharing within and outside the organizationMaintaining client contact, identifying opportunities, and co-authoring proposalsThroughout all these tasks, you will work closely with colleagues and clients from practice. In summary, as an R&D engineer, you will hold a role with substantive depth and dynamism in a multidisciplinary environment!

Since its inception in 2018, Bitvavo has been at the forefront of revolutionizing digital asset trading, seamlessly connecting traditional currencies with innovative digital assets. Our platform boasts transparent fees, an extensive asset range, and a user-friendly interface, making the future of currency accessible to everyone.In just two years, Bitvavo has emerged as the market leader in the Netherlands and ranks among the largest in Europe, with a thriving community of over one million users exchanging tens of billions in digital assets annually.We are actively seeking driven and talented individuals to join our Amsterdam team in making digital assets universally available.About the RoleWe are in search of a Senior Staff Engineer, Frontend to redefine how Bitvavo enhances customer experiences across all frontend products.Given that most user interactions occur through our app, this role emphasizes mobile development, with a significant impact across all user-facing interfaces. You will be pivotal in defining our approach to product development, ensuring our engineering teams can deliver swiftly, confidently, and with outstanding quality.This position holds considerable influence across departments, allowing you to shape engineering practices at Bitvavo, establishing principles and systems that guarantee our products remain reliable, fast, and enjoyable for users.Your ResponsibilitiesDefine the technical strategy for all of Bitvavo’s frontend systems.Influence product development processes to deliver fast and seamless user experiences.Collaborate with product and design teams to create intuitive and consistent user interfaces.Lead initiatives focused on enhancing performance, accessibility, and developer productivity.Ensure our products efficiently manage low-latency data interactions at scale.Mentor fellow engineers and foster technical leadership across the organization.Contribute to the operational framework of engineering as Bitvavo continues to scale.QualificationsOver 10 years of experience in developing large-scale, user-facing applications, with a strong emphasis on mobile technologies.Expertise in React Native, React, along with familiarity in iOS and Android native development.Demonstrated success in leading projects that significantly enhance technical quality and user experience.Experience with low-latency or real-time data systems.

At 2Amsterdam, a bustling hub for international tenants and regular visitors, the reception area is a cornerstone of our operations. As a Senior Receptionist at D&B The Facility Group, you will play a vital role in ensuring a seamless front-of-house experience. Your exceptional organizational skills will help maintain oversight, allocate attention where necessary, and uphold the high standards of service that our clients expect.Key Responsibilities:Act as the primary point of contact for tenants, suppliers, and the D&B team.Monitor and maintain the quality of reception and service.Warmly welcome and guide visitors.Coordinate daily tasks with the Security Host and facility services.Identify areas for improvement and initiate action plans.

At Moss, we empower finance professionals to streamline their operations and make strategic decisions with confidence.Our distinct team culture is centered around impact and growth, where each of us is committed to continuous learning and excellence. Acknowledged by Sifted’s Rising 100 and LinkedIn's Top Startups, we are dedicated to propelling your career forward and ensuring Moss's enduring success.We invite you to join our Partnerships team as a Partnerships Manager (f/m/d). In this crucial role, you will be instrumental in fostering long-lasting relationships with our partners and expanding the channels through which we engage potential customers with Moss solutions. By collaborating cross-functionally with internal stakeholders and leveraging your expertise, you will be a vital component of Moss’s mission to establish itself as the leading player in European spend management.

Frontend Engineer (Vue.js)Location: AmsterdamEmployment Type: Full-timeJoin an Ambitious Tech Team in the Netherlands!In 2023, we were honored with the prestigious Oryx Award from the Dutch Financial Newspaper (FD), recognizing us for outstanding growth performance. Previously, we achieved 1st place in the Deloitte Fast 50 for growth and innovation in 2019 and 7th place in 2020. Our growth trajectory has continued robustly during and after the pandemic, and we have exciting plans for the future. We are now on the lookout for a talented and driven Frontend Engineer to help us realize our ambitious growth goals.About ExperiencegiftExperiencegift represents leading experience gift brands like Hotelgift, Flightgift, Traingift, and Activitygift, allowing customers to gift unforgettable experiences through our selection of 750,000 hotels, 400 airlines, 50,000 activities, and train journeys across Europe. We believe that experiences hold more value than material possessions, and our mission is to simplify the process of gifting experiences, making it joyful and accessible globally. Operating in over 50 countries, with offices in Amsterdam, London, Athens, and New York, we are a cohesive team of 50+ individuals representing over 15 nationalities.

Join Our Innovative Team:Planner 5D is a leading global platform for home design, connecting over 100 million users across 230 countries, including two enthusiastic users from Antarctica each month! Our advanced software streamlines the home renovation journey from initial concept to final execution, making it accessible for everyone, regardless of design expertise. Explore how our innovative tools can transform your living or workspace.Our applications are available on multiple platforms including Web, iOS, Android, Windows, and MacOS, ensuring seamless user experience and synchronization. Planner 5D is not just software; it’s a thriving community of passionate professionals dedicated to revolutionizing the home design industry.We seek a Frontend Developer who shares our enthusiasm for crafting clean, reusable code using JavaScript and TypeScript. Our development approach emphasizes object-oriented programming (OOP), adhering to stringent coding standards and technical requirements.Our Tech Stack: PHP 7.4 (8.1), Symfony, PHPUnit, MySQL, Redis, MongoDB, RabbitMQ, Git, Docker for backend; for frontend: native JavaScript, jQuery (legacy code), TypeScript, Three.js (OpenGL), SVG, Canvas, WebGL, Webpack, WebSocket, Jest (unit tests), Docker.

Patagonia, established in 1973, is a renowned outdoor apparel company committed to environmental activism and sustainability. In an era where our planet faces unprecedented threats, we leverage our resources—our business operations, investments, voice, and creativity—to catalyze necessary changes for preserving Earth. As a certified B Corporation and a founding partner of 1% for the Planet, Patagonia is globally acknowledged for its dedication to high-quality products and robust environmental initiatives, having contributed over $145 million in grants and donations to grassroots environmental organizations worldwide.Your Role:At Patagonia, our mission is to protect our home planet. This pivotal position oversees the people and organization strategy for the EMEA region, managing all facets of the employee lifecycle to ensure the delivery of effective, equitable, and compliance-driven practices that embody our entrepreneurial spirit. Collaborating closely with the EMEA Leadership Team, you will translate business needs into actionable people practices, enhance organizational effectiveness and employee experience, foster a vibrant culture, and develop long-term capabilities to achieve our objectives, drive quality growth, and uphold our core values across multiple countries.As a key member of the EMEA Leadership Team, you will go beyond functional strategy, working with the ELT to guide Patagonia EMEA. This role demands collaboration, as you will co-create high-level strategies with the ELT, convert strategies into execution plans, and implement these with key stakeholders, making decisions that significantly impact Patagonia EMEA’s long-term trajectory and cultural success.Main Responsibilities:People, Culture, and Justice Organization: Develop the PC+J organization, managing resources and shaping a culture conducive to innovation, co-creation, and cross-functional collaboration, ensuring scalability and agility. Lead, mentor, and develop a high-performing team through clear priorities, feedback, and ongoing coaching, promoting leadership, professional growth, accountability, and objective achievement.People, Culture, and Justice Strategy: Design the people and organizational strategy in alignment with EMEA long-range planning and global PC+J agenda, facilitating EMEA business priorities and goals. Transform strategy into actionable roadmaps and oversee execution, ensuring quality and consistency in service delivery.Organizational Effectiveness: Plan, manage, and evolve strategic workforce planning to enhance organizational performance and effectiveness.

Rituals Cosmetics seeks a Research and Development Product Manager based in Amsterdam. This position centers on guiding product development projects from concept through launch, with an emphasis on supporting innovation throughout the company. Main responsibilities Lead product development initiatives, ensuring alignment with Rituals' brand values. Support innovation by working closely with colleagues from various departments. Help create products that meet customer expectations and uphold quality standards. Collaboration Success in this role depends on effective teamwork. The Product Manager works with experts from different disciplines to bring new ideas to market and maintain Rituals' reputation for thoughtful product design. Location This position is based in Amsterdam.