Mid-Level C# Developer for Mendix Studio Pro Core

Mendix – Pioneering Low-Code Application Development:The Mendix Platform empowers rapid application development through visual modeling, minimizing traditional coding barriers. Our clients harness Mendix to accelerate the creation and deployment of software tailored for enterprise needs. Mendix fosters collaboration between business stakeholders and develope…

Mendix builds a low-code application development platform used by organizations worldwide to launch new ideas quickly. Since joining Siemens in 2018, Mendix has blended the scale of a global software company with the flexibility of a fast-growing team. The Solutions Engineer - Core AI position is available in several cities: London, Rotterdam, Amsterdam, Munich, Berlin, Erlangen, Frankfurt, or Stuttgart. This role centers on developing and scaling hybrid agentic workforces by combining low-code tools, AI, data, and system integrations. The goal is to help organizations efficiently create and orchestrate agents and applications. What you will do Design and build customer-facing prototypes and lighthouse projects to test and validate AI-driven integration scenarios. Lead strategic workshops and technical sessions with both customers and internal teams, focusing on agentic AI workflows and advanced integrations. Transform successful customer projects into reusable assets, such as reference architectures, blueprints, accelerators, and scalable patterns. Act as the technical lead for agentic system design, guiding tool selection, orchestration, and multi-agent strategies. Develop and manage complex integration architectures to ensure smooth operation across diverse platforms.

Join Mendix: The Premier Low-Code Application Development PlatformAt Mendix, we empower organizations to rapidly enhance their software development processes through our innovative low-code platform. By utilizing visual modeling techniques, our customers can streamline the creation and deployment of enterprise applications, significantly reducing development time. Our platform fosters a collaborative environment where business users and developers work seamlessly together throughout the entire development lifecycle.Explore our Customer Stories to see the incredible solutions our clients have built using Mendix.At Mendix, we are committed to cultivating a diverse, inclusive, and safe workplace where everyone can express their authentic selves. We believe in the power of diverse perspectives and experiences, and we celebrate each individual’s unique contribution. Our team comprises driven, intelligent, and skilled professionals dedicated to excellence.As the market continues to evolve, we welcome individuals of all skill levels to engage with our platform—both as clients and candidates. Apply today to learn how you can make a significant impact at Mendix.Working Environment The Business Process Orchestration team is a part of the Logic group located in our Rotterdam office. Here, we are developing the next generation of the Agentic Enterprise Platform, essential for organizations to thrive in a fast-paced market. Our platform enables clients to create smarter software that leverages agentic AI, ensuring a superior experience for both developers and end-users.

Join Mendix – the Premier Low-Code Application Development Platform:The Mendix Platform revolutionizes application development by utilizing visual modeling to eliminate extensive coding. Our clients harness Mendix to rapidly create and deploy superior enterprise software. Mendix fosters a collaborative environment where business users and developers can seamlessly engage throughout the development lifecycle.Explore our Customer Stories to discover the diverse software solutions that global organizations have successfully built using our platform.At Mendix, we are committed to cultivating a diverse, inclusive, and safe workplace, allowing individuals to express their authentic selves. We value every perspective, celebrate individuality, and appreciate the richness of diverse experiences. Our team members are motivated, intelligent, and excel in their respective fields.As the market evolves, we invite individuals of all skill levels to engage with our platform, both for clients and candidates. Apply now to learn how you can contribute meaningfully to Mendix.Our teams, based in Munich, DE, and Rotterdam, NL, are at the forefront of innovation within Mendix, focusing on cutting-edge technologies that democratize Generative AI solutions as part of our global R&D initiative.The Munich team is dedicated to developing innovative solutions that empower our customers to create smarter applications leveraging generative AI while ensuring a seamless developer and end-user experience. Many of our components are featured in the Mendix marketplace, showcased in this app and are available through Mendix Cloud GenAI Resource Packs.

Mendix is committed to revolutionizing the application development landscape by simplifying the creation process. Our platform empowers all stakeholders in an enterprise's digital transformation—business analysts, web developers, software engineers, and even executives—to actively contribute to developing superior applications more efficiently. Our mission is clear: to shape the future of software development.Explore our Customer Stories to discover the diverse range of software solutions that organizations around the globe have built using our platform.Join Our Innovative TeamIn this pivotal role, you will define the systems, tools, and architectural frameworks that underpin our platform. Your contributions will enhance end-user experiences from design to runtime and drive initiatives that innovate our systems. Your work will significantly influence the productivity and innovative capabilities of the development community, fostering a collaborative future in application development.If you thrive on challenges and possess the courage to tackle complex issues that others may shy away from, this position is perfect for you. We value your technical expertise, initiative, and ability to inspire others on our journey towards excellence.

Mendix is seeking a Swedish-Speaking Business Development Representative to join its Rotterdam office. This position centers on reaching out to potential clients and showing how Mendix’s application development platform can address their business needs. Key responsibilities Connect with prospects to understand their goals and challenges Communicate the benefits of Mendix’s solutions in ways that resonate with each client Develop and maintain strong relationships with Swedish-speaking customers Assist the sales team by spotting new opportunities and qualifying leads Requirements Fluency in Swedish Excellent communication and relationship-building abilities Interest in technology and digital products Drive to grow in business development and sales

Join Mendix as a Business Development Representative specializing in Turkish language support. In this dynamic role, you will spearhead the development of new business opportunities, connecting with potential clients and demonstrating the value of our innovative low-code platform. Your expertise in Turkish will be invaluable as you engage with clients in the region, helping them to transform their businesses through technology.

Mendix is seeking a Product Manager focused on Runtime & Client to join the team in Rotterdam. This position centers on guiding the direction and growth of the Mendix platform, working closely with colleagues across engineering, design, and other functions. Role overview This role involves shaping the product strategy and setting priorities for new features that improve user experience. The Product Manager will collaborate with cross-functional teams to ensure the platform evolves in line with user expectations and market shifts. What you will do Define the product vision for Runtime & Client areas of the Mendix platform Gather and prioritize product requirements based on customer feedback and industry trends Work throughout the product lifecycle, from initial concept through to launch Use analytical skills to support data-driven decision making Ensure product direction aligns with both customer needs and broader market developments Requirements Experience collaborating with cross-functional teams Strong analytical skills Ability to define vision and manage priorities for a technical product

Are you ready for Change?At Change, we are all about movement, growth, and making a real impact for our clients and colleagues alike. We are in search of a passionate Recruiter who can elevate our recruitment function to new heights. As a pivotal link in our recruitment processes, you will collaborate closely with operational teams to translate staffing needs into a strategic recruiting approach. Your role will contribute to the development of a strong recruitment team by identifying the right talent and employing a data-driven methodology to enhance and optimize our hiring processes.Your Responsibilities:Recruitment and Selection: Take ownership of the recruitment processes for staff roles and client advisors, from crafting job descriptions to onboarding new hires. Whether it's high-volume recruitment or pinpointing the perfect candidate, you will roll up your sleeves and make it happen.Central Point of Contact: Collaborate with business and operational teams to convert staffing requirements into targeted recruitment actions.Process Optimization: Constantly improve recruitment processes and implement best practices within the team.Data Analysis & Reporting: Analyze recruitment data and key metrics to measure and enhance the effectiveness of our hiring efforts.Onboarding: Actively contribute to refining the onboarding process to ensure new employees are integrated quickly and effectively.Employer Branding: Initiate campaigns to attract the right audiences to Change.

Join Alten as a C++ Software Engineer specializing in the aeronautical sector. In this role, you will be responsible for designing and implementing robust software solutions that enhance aviation technology. Your expertise in C++ will be pivotal in developing innovative applications that meet the dynamic needs of the industry.

Speechify helps people listen to articles, documents, and books wherever they are. The company’s tools support deeper, faster, and more enjoyable learning. As a leader in its field, Speechify continues to grow quickly, much like streaming services have shaped audio entertainment. About the Role The Core Experiences Team at Speechify is looking for a Senior Software Engineer in Rotterdam. This team builds and maintains the core services and SDKs that power the Speechify experience across platforms. The position suits engineers who enjoy working where product and infrastructure meet, and who care about building reliable APIs and efficient systems that improve how users interact with Speechify. What You Will Do Work with Product Teams to define project scopes, improve processes for faster customer feedback, and balance integration and UX trade-offs to deliver strong solutions through the cross-platform SDK. Improve current features by designing efficient abstractions and algorithms for faster load times and smarter parsing. Build cloud functions, lightweight backend services, and jobs using Kotlin. Location This role is based in Rotterdam, Netherlands.

Role Overview KPN is looking for a DevOps Engineer focused on Packet Switched Core technologies in Rotterdam. This position involves collaborating with teams across the company to support the deployment, management, and scaling of network infrastructure. What You Will Do Automate operational processes to improve efficiency and consistency Work with colleagues from different disciplines to deliver and maintain reliable network systems Support the growth and stability of Packet Switched Core infrastructure Contribute ideas and technical solutions that help move the business forward

Promedia Group seeks a part-time AV Specialist / Studio Assistant based in Rotterdam. This position plays a key role in supporting audiovisual content production and contributes to the technical and creative quality of media projects. Role overview The AV Specialist / Studio Assistant works closely with production teams to ensure audiovisual materials meet high standards. Responsibilities include assisting with hands-on tasks in the studio and helping maintain the company’s approach to brand storytelling through careful audiovisual execution. What you will do Support the production of audiovisual content for various media projects Help maintain technical quality and creative consistency in studio work Contribute to the company’s brand storytelling through thoughtful audiovisual support Location and schedule This is a part-time position located in Rotterdam.

Role Overview KPN is looking for a Mid-Level XP&A (FP&A) Controller in Rotterdam. This role focuses on financial planning and analysis, with a strong emphasis on integrating financial data systems. The position supports accurate reporting and delivers strategic financial insights. What You Will Do Support the integration of financial data systems across the organization Ensure the accuracy of financial reporting Provide actionable financial analysis to inform business decisions Work closely with cross-functional teams to improve financial performance Contribute to business initiatives through financial expertise About the Team Join a group that values collaboration and clear communication. The team works together to support KPN’s financial goals and business growth.

About the Role Speechify is looking for a Software Engineer focused on iOS Core Product development in Rotterdam, Netherlands. This position centers on building and improving the main features of our iOS apps. The work involves collaborating with teams across design, product, and engineering to deliver smooth, reliable experiences for users. What You Will Do Design and implement features that strengthen the core of Speechify’s iOS applications Work side by side with colleagues from different disciplines to bring new ideas to life Help ensure our iOS apps remain intuitive, stable, and enjoyable to use

HighlightsRelease updates multiple times a day.Receive recognition and credit for your contributions.Your impact is directly visible and significantly enhances port logistics.Mission OverviewIn this pivotal role, you will lead sprints and epics while being an integral part of one of our agile scrum teams. As a scrum team member, you will analyze, construct, test, and deploy innovative software solutions. Your passion for development drives you to contribute actively to the coding process.You are a Java developer who passionately discusses your field and keeps abreast of the latest industry advancements. You embody innovation and are continually seeking smarter solutions, which you share with your colleagues.

Are you an experienced development professional eager to make a significant impact? Do you excel in collaboration with a creative approach? With your extensive knowledge and experience, can you maintain a strong overview and tackle complex challenges involving multiple stakeholders? Are you adept at inspiring and aligning all parties involved? If so, we want to hear from you!Your RoleAs an Area Developer at Dura Vermeer, you will successfully steer complex, often urban projects. You will transform existing buildings, raw sites, or ready-to-build locations into vibrant residential and commercial areas, potentially in various phases. Your responsibilities will include managing concepts, timelines, finances, and collaboration with partners and stakeholders. You will also represent Dura Vermeer in collaborations or participations. Working closely with your internal colleagues, such as concept developers and project developers, you will ensure our positions and developments progress smoothly, empowering our project developers to start with the right foundations.Your responsibilities will include:Collaborating with various stakeholders including development partners, municipalities, designers, advisors, and clients.Managing concepts, impact, finances, planning, and risks.Structuring collaborations effectively.Ensuring the right conditions are met, such as commitment from parties and appropriate contractual agreements.Accelerating processes through effective communication and decision-making.Facilitating a smooth handover of projects to project developers.Dura Vermeer's Focus on Real EstateDura Vermeer has ambitious goals as a developer. Our portfolio features challenging (area) developments with distinctive concepts, primarily located in urban settings. Our area of operation spans Zuid-Holland, where we embrace urban challenges and aim to add maximum value to our plans. This results in projects where you can truly impact urban planning, architecture, sustainability, and social cohesion.As an organization, we are growing towards a branch that annually acquires and sells 800 homes with risk-bearing capacity. This means we take on significant responsibilities in the development process.

Join KPN as the Manager of Employee Experience & Continuous Learning in Rotterdam, where you will spearhead initiatives to enhance employee engagement and drive continuous learning across our operations. In this vital role, you will collaborate with various departments to create a thriving work environment that fosters professional growth and development.

At Norday, a strategic digital agency, we partner with sectors such as healthcare, public services, museums, and startups, empowering clients to lead in their domains. Our multidisciplinary team collaborates on digital projects that truly impact people's daily lives. If this resonates with you, you might be the React Developer we are looking for!What will you do as a React Developer at Norday?You will join our public team, a dedicated multidisciplinary unit working with clients in the public sector, such as Rotterdampas. Your role will involve crafting high-quality, user-friendly web applications. Collaborating with our UX designers, visual designers, and backend developers, you will create impactful digital platforms that prioritize the user experience. You will transform wireframes and design prototypes into high-performing, accessible, and scalable front-end solutions while contributing to quality assurance within the team.Your Responsibilities:Develop interactive, responsive, and accessible headless web applications using React and Next.js;Implement APIs for data exchange and integration with SaaS systems (Sanity, Storyblok);Write clean, maintainable code in HTML, CSS, and JavaScript;Optimize web applications for performance, scalability, and accessibility;Contribute to digital accessibility, ensuring an optimal user experience for all.Who Are You?You are someone who takes responsibility and stays updated on new technological developments. You can communicate clearly with both clients and team members (from stand-ups to demos), easily switch between various stakeholders and projects, work solution-oriented, and find energy in delivering a high-quality end product.Our ideal React Developer will have:Over 4 years of experience as a (front-end) developer, preferably in a digital agency environment;

KPN seeks an Oracle Developer to join the team in Rotterdam. This position focuses on designing, implementing, and refining Oracle database solutions that support both current projects and the organization’s long-term technical stability. Collaboration with colleagues from various departments is central to this role. Main responsibilities Create and maintain Oracle database systems that fit business requirements Improve database performance and ensure ongoing reliability Partner with teams across the company to achieve project objectives Support the evolution of KPN’s technology stack through continuous improvement Work location This role is based in Rotterdam.