back end developer

ByCape

About Cape.ioAt Cape.io, we aren&rsquo;t just keeping pace with the advertising industry&mdash;we are actively rewriting its rules. We built the world&rsquo;s first Intelligent Campaign Automation platform, eliminating the friction between creative ideas and media deployment. Our tech is trusted by global brands to scale and launch campaigns across 100+ countries.While Cape.io has a massive global footprint, our tech engine runs on a young, and fast-moving team based right here in Tilburg.We operate like a high-growth startup with the backing of a global powerhouse. We are a small team moving incredibly fast to take over the world of creative automation. If you want to own your code, ship fast, and see your impact daily, welcome home.What you'll doAs a Back-end Developer, you will combine hands-on development with true technical ownership. You&rsquo;ll be designing and scaling the backend services that power our high-performance SaaS platform.<ul><li>Design and build scalable backend systems and services for our high-scale SaaS platform.</li><li>Take ownership of core backend components and APIs, managing the end-to-end lifecycle from technical design to monitoring.</li><li>Innovate by actively contributing new technical ideas and architectural solutions to the team.</li><li>Shape the future of engineering by adopting and helping design AI-powered development workflows.</li><li>Maintain and improve existing Node.js / TypeScript applications, ensuring code quality and security.</li><li>Architect for scale by making decisions focused on performance, reliability, and long-term maintainability.</li><li>Evaluate technologies and backend patterns to determine where they add real value to our stack.</li></ul>What you'll bringWe are looking for a backend-focused engineer who thinks in systems and thrives in a fast-paced environment where speed is combined with intelligence.<ul><li>A Bachelor&rsquo;s or Master&rsquo;s degree in an ICT-related field.</li><li>3+ years of relevant backend software engineering experience, specifically with TypeScript, Node.js,.</li><li>Experience with back-end architecture and system design.</li><li>Experience with building scalable and distributed systems.</li><li>Experience with GitLab, Jira, and CI/CD pipelines.</li></ul>Bonus points:<ul><li>Experience influencing technical direction within a team.</li><li>Experience with AI-assisted development tools or workflows.</li><li>Experience with event-driven or message-based architectures.</li><li>Knowledge of Redis, MySQL, MongoDB.</li><li>Hands-on experience with Google Cloud, including Pub/Sub, Cloud Tasks, Cloud Run and Kubernetes.</li></ul>Our DNA: How we workOur values aren't just words on a wall; they are the principles that guide our decisions, actions, and interactions every day.<ul><li>Move smart: Hesitation kills momentum. We combine speed with intelligence, turning complex challenges into automated solutions. Every experiment teaches us, every failure makes us stronger.</li><li>Define tomorrow: We're not here to meet expectations; we're here to reset them. Our mission demands unprecedented quality, security, and scale. We push the boundaries of what's possible.</li><li>Be better together: Success multiplies when shared. We step up, dig in, and make things better for each other. Through open collaboration and fierce support, we turn individual potential into collective achievement.</li><li>Change what&rsquo;s possible: Creativity drives humanity forward. Our technology exists to amplify it, protect it, and let it soar. We remove barriers between great minds and great work.</li></ul>Why join Cape.io?<ul><li>Real challenges: Work on a high-volume, market-leading product with genuine architectural complexity.</li><li>AI-first culture: AI-powered development isn't a buzzword here; it&rsquo;s baked into our everyday engineering workflows.</li><li>The best of both worlds: Enjoy the energy, speed, and fun of a young, local Tilburg team, backed by the stability and benefits of a global company.</li><li>The perks: Competitive salary, travel allowance, flexible/hybrid working arrangements, and a culture that genuinely celebrates shared success.</li></ul>Are you ready to change what's possible? Apply now! Job Type: Full-timeApplication Question(s):<ul><li>Are you located in the Netherlands? </li></ul>Work Location: Hybrid remote in 5041 Tilburg

Back-end Developer

BAM Nederland

<div>
 What if you played a key role in modernizing the backend landscape of BAM and building scalable, future-proof solutions that directly support our construction and service operations? As a Back-End Developer, you&rsquo;ll work on transforming legacy systems into modern architecture and make a real impact on how our digital platforms perform.
 
 
 
 Make it possible
 
 
 
 As a Back-End Developer, you are responsible for designing, building, and improving backend services within our platform landscape. You work closely with other developers and stakeholders to ensure stability, scalability, and continuous improvement.
 
 
 
 <ul>
 <li>
 You develop and maintain backend services using .NET (including .NET 10);
 </li>
 <li>
 You contribute to migrating legacy systems towards a modern backend architecture;
 </li>
 <li>
 You apply Clean Architecture principles in designing scalable solutions;
 </li>
 <li>
 You collaborate closely with developers and stakeholders to deliver high-quality solutions;
 </li>
 <li>
 You actively contribute to improving performance, maintainability, and scalability of systems.
 
 
 
 </li>
 </ul>
 
 Your team
 
 
 
 b.Home is one of the newest business units within BAM. We digitalize and automate workflows of BAM&rsquo;s construction and maintenance departments, enabling them to work more efficiently.
 
 
 For residential construction, the b.Home platform supports renovation, pre-delivery inspections, final delivery, service days, and the handover to Service &amp; Maintenance. For the Service &amp; Maintenance departments, the b.Home platform provides a digital workflow that efficiently coordinates the handling of residents&rsquo; service requests.
 
 
 You will join an international development team of approximately 12 colleagues, working from our Amsterdam office. Within the team, there is a strong focus on collaboration and knowledge sharing.
 
 
 We work in a hybrid setup: you are expected in the office on Mondays and Wednesdays, and work from home on the other days. Flexibility is expected when needed, for example during key project phases.
 
 
 
 What We Offer
 
 
 
 At BAM, we believe in investing in our people and creating a positive and inclusive work environment. In this dynamic role, you&rsquo;ll be part of a sector that is constantly evolving &mdash; and you will play an important role in that transformation.
 
 
 Furthermore, we offer you:
 
 
 
 <ul>
 <li>
 A salary between &euro;5,500 and &euro;7,000, depending on your knowledge and experience, plus 8% holiday allowance;
 </li>
 <li>
 Excellent secondary benefits according to the Bouw &amp; Infra CLA, including 43 vacation days per year (based on full-time employment), with the option to partially cash out;
 </li>
 <li>
 Full travel expense reimbursement, plus a laptop and iPhone;
 </li>
 <li>
 The opportunity to continuously develop yourself via BAM Learning and other training programs;
 </li>
 <li>
 Additional benefits such as :40% discount on sports memberships and discounts on insurances, HP products, and Microsoft Office.
 
 
 
 </li>
 </ul>
 
 This is you
 
 
 
 You are a backend specialist who enjoys working on complex systems and bridging the gap between legacy and modern architectures. You feel comfortable in a dynamic environment and take ownership of your work.
 
 
 
 <ul>
 <li>
 You have at least 3&ndash;5 years of experience as a Back-End Developer;
 </li>
 <li>
 You have strong experience with .NET (experience with .NET 10 is a plus);
 </li>
 <li>
 B.home backend is setup as a microservices architecture. Experience with Kubernetes, Wolverine, Azure DevOps, is preferred;
 </li>
 <li>
 You are familiar with Clean Architecture patterns;
 </li>
 <li>
 You have experience working with (or near) legacy systems and migrations;
 </li>
 <li>
 You are proactive, analytical, and solution-oriented.
 
 
 
 </li>
 </ul>
 
 Over BAM
 
 
 
 At BAM, we believe everyone should have the opportunity to bring out the best in themselves. We are committed to creating an environment where everyone feels valued. That&rsquo;s why we welcome people from diverse backgrounds, experiences, and perspectives.
 
 
 
 Het sollicitatieproces
 
 
 
 Are you interested? Apply via the &lsquo;Apply&rsquo; button and leave your details. Our recruiter Kerstens, Stef would be happy to get in touch with you.
 
 
 Do you have any questions? Feel free to call, email, or message Stef via 06-15850069 or stef.kerstens@bam.com.
 
 
 Step in and make it possible.
 
 
</div>

Back-End Developer (.NET)

Confidential

<div>
 
 
 We're Hiring: Mid-Level .NET Backend Developer
 
 
 
 Are you passionate about building scalable, secure, and high-performance backend applications? We're looking for a
 
 Mid-Level .NET Backend Developer
 
 with
 
 around 3 years of professional experience
 
 to join our growing engineering team.
 
 
 
 
 
 
 What You'll Do
 
 
 <ul>
 <li>
 Design, develop, and maintain RESTful APIs using
 
 .NET 8+
 
 .
 </li>
 <li>
 Build scalable backend services with clean, maintainable code.
 </li>
 <li>
 Collaborate with frontend developers, QA engineers, and product teams.
 </li>
 <li>
 Optimize application performance, security, and reliability.
 </li>
 <li>
 Design and optimize SQL Server/PostgreSQL databases.
 </li>
 <li>
 Participate in code reviews, architecture discussions, and Agile ceremonies.
 </li>
 <li>
 Work with caching, messaging, and background processing technologies.
 </li>
 </ul>
 
 
 
 
 
 What We're Looking For
 
 
 <ul>
 <li>
 Around
 
 3 years of professional experience
 
 with .NET backend development.
 </li>
 <li>
 Strong knowledge of
 
 C#, ASP.NET Core, Entity Framework Core, and SQL
 
 .
 </li>
 <li>
 Experience with
 
 REST APIs
 
 ,
 
 JWT Authentication
 
 , and
 
 Swagger/OpenAPI
 
 .
 </li>
 <li>
 Good understanding of
 
 Clean Architecture
 
 ,
 
 SOLID Principles
 
 , and design patterns.
 </li>
 <li>
 Experience with
 
 Redis
 
 ,
 
 RabbitMQ
 
 ,
 
 Docker
 
 ,
 
 Git
 
 , and
 
 CI/CD
 
 .
 </li>
 <li>
 Experience with
 
 Microsoft Azure or AWS
 
 .
 </li>
 <li>
 Strong problem-solving skills and a collaborative mindset.
 </li>
 </ul>
 
 
 
 
 
 Nice to Have
 
 
 <ul>
 <li>
 Experience with Microservices.
 </li>
 <li>
 SignalR.
 </li>
 <li>
 Kafka or Azure Service Bus.
 </li>
 <li>
 MongoDB.
 </li>
 <li>
 Basic knowledge of Kubernetes.
 </li>
 </ul>
 
 
 
 
 If you're passionate about building modern backend systems and enjoy working in a collaborative environment, we'd love to hear from you!
 
</div>

Back End Developer

Magnet

<div>
 
 
 Employer Overview
 
 
 
 A fintech solution enabling tenants to pay their rent seamlessly using credit or debit cards. The platform transforms a major monthly expense into a rewarding and flexible financial experience, helping users optimize cash flow and maximize value from everyday payments.
 
 
 
 
 
 
 Job Summary
 
 
 
 The Backend Engineer will be responsible for building and maintaining scalable backend services that power the platform&rsquo;s core payment and integration systems. The role focuses on developing secure, high-performance APIs and ensuring reliability across a fast-growing fintech environment.
 
 
 We are looking for someone who is proactive, detail oriented, and excited to work in a fast
 
 
 paced fintech startup environment.
 
 
 
 
 
 
 Key Responsibilities
 
 
 <ul>
 <li>
 Build and maintain scalable backend services using
 
 Python (Django) and PostgreSQL
 
 </li>
 <li>
 Design and integrate APIs, payment flows, and third-party services
 </li>
 <li>
 Optimize database performance, security, and system reliability
 </li>
 <li>
 Collaborate with frontend, product, and operations teams to deliver new features
 </li>
 <li>
 Write clean, maintainable, and well-tested code
 </li>
 <li>
 Support infrastructure, deployments, and monitoring of production systems
 </li>
 <li>
 Troubleshoot and resolve technical issues in a timely manner
 </li>
 <li>
 Ensure high standards of
 
 security and data protection
 
 (critical for fintech)
 </li>
 <li>
 Contribute to system architecture and scalability improvements
 </li>
 </ul>
 
 
 
 
 
 Qualifications
 
 
 <ul>
 <li>
 Bachelor&rsquo;s degree in Computer Science, Engineering, or a related field
 </li>
 <li>
 5&ndash;7 years of experience in backend development
 </li>
 <li>
 Strong experience in
 
 fintech or payment-related platforms
 
 is preferred
 </li>
 <li>
 Experience working in a
 
 startup or scaling environment
 
 is a plus
 </li>
 <li>
 Strong experience with
 
 Python, Django, and PostgreSQL
 
 </li>
 <li>
 Experience in building and integrating
 
 APIs and payment systems
 
 </li>
 <li>
 Knowledge of
 
 database optimization and system performance
 
 </li>
 <li>
 Understanding of
 
 system design and scalable architectures
 
 </li>
 <li>
 Strong problem-solving and analytical thinking
 </li>
 <li>
 Ability to work independently and take ownership
 </li>
 <li>
 Good communication and collaboration skills
 </li>
 <li>
 Business-oriented mindset
 </li>
 <li>
 Proficient in development tools and environments
 </li>
 <li>
 Experience with deployment, monitoring, and debugging tools
 </li>
 <li>
 Fluent English
 </li>
 </ul>
</div>

Alignerr

<div>
 
 About The Role
 
 
 
 What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers in Amsterdam to design, build, and optimize the server-side systems and APIs that drive cutting-edge AI products &mdash; from data pipelines and model-serving infrastructure to scalable microservices that handle real-world traffic at scale.
 
 
 This is a fully remote, flexible contract role. Whether you're a seasoned engineer looking for meaningful project work or a strong developer ready to apply your skills to AI-adjacent infrastructure, this is your chance to build things that matter.
 
 
 <ul>
 <li>
 Organization: Alignerr
 </li>
 <li>
 Type: Hourly Contract
 </li>
 <li>
 Location: Remote
 </li>
 <li>
 Commitment: 10&ndash;40 hours/week
 
 
 </li>
 </ul>
 
 What You'll Do
 
 
 
 <ul>
 <li>
 Design, develop, and maintain robust back end services, APIs, and data pipelines
 </li>
 <li>
 Build scalable, high-performance server-side architecture to support AI training and inference workloads
 </li>
 <li>
 Write clean, well-documented, and testable code following engineering best practices
 </li>
 <li>
 Integrate with databases, message queues, cloud services, and third-party APIs
 </li>
 <li>
 Optimize system performance, reliability, and scalability as usage grows
 </li>
 <li>
 Collaborate asynchronously with distributed teams of engineers, researchers, and product leads
 </li>
 <li>
 Troubleshoot production issues, conduct code reviews, and contribute to architectural decisions
 </li>
 <li>
 Work independently on task-based and project-based assignments on your own schedule
 
 
 </li>
 </ul>
 
 Who You Are
 
 
 
 <ul>
 <li>
 Proficient in one or more back end languages &mdash; Python, Go, Java, Node.js, Rust, or similar
 </li>
 <li>
 Solid understanding of RESTful API design, microservices architecture, and distributed systems
 </li>
 <li>
 Experienced with relational and/or NoSQL databases (PostgreSQL, MongoDB, Redis, etc.)
 </li>
 <li>
 Comfortable working with cloud platforms such as AWS, GCP, or Azure
 </li>
 <li>
 Familiar with version control (Git), CI/CD pipelines, and containerization (Docker, Kubernetes)
 </li>
 <li>
 Strong problem-solving skills and the ability to debug complex systems independently
 </li>
 <li>
 Self-motivated, reliable, and effective when working asynchronously without close supervision
 </li>
 <li>
 Clear communicator who can document decisions and collaborate across time zones
 
 
 </li>
 </ul>
 
 Nice to Have
 
 
 
 <ul>
 <li>
 Experience building infrastructure for machine learning or AI systems
 </li>
 <li>
 Familiarity with data processing frameworks (Apache Kafka, Spark, Airflow, or similar)
 </li>
 <li>
 Background in performance optimization, caching strategies, or high-throughput systems
 </li>
 <li>
 Knowledge of authentication, authorization, and security best practices
 </li>
 <li>
 Experience with serverless architectures or event-driven design patterns
 </li>
 <li>
 Contributions to open-source projects or a strong portfolio of personal/professional work
 
 
 </li>
 </ul>
 
 Why Join Us
 
 
 
 <ul>
 <li>
 Work on cutting-edge AI infrastructure projects alongside leading research labs
 </li>
 <li>
 Fully remote and flexible &mdash; set your own hours and work from anywhere
 </li>
 <li>
 Freelance autonomy with access to meaningful, technically challenging work
 </li>
 <li>
 Build systems at the intersection of software engineering and artificial intelligence
 </li>
 <li>
 Collaborate with a global network of talented engineers and researchers
 </li>
 <li>
 Potential for ongoing work and contract extension as new projects launch
 </li>
 </ul>
</div>

Back End Developer (AI Infrastructure)

Philips

<div><h3 class="jobSectionHeader">Job Title
</h3>Senior Web Back End Developer Azurion Eye
<h3 class="jobSectionHeader">Job Description
</h3><div>Senior Web Back End Developer Azurion Eye
</div>Join Azurion Eye&mdash;an integrated, AI‑enabled clinical software platform embedded in the Azurion ecosystem. As Senior Web back‑end developer within the AI Operator domain, you will build REST‑based, microservice‑first backend services and data curation workflows that power our clinical data lake and data movement tooling (viewing, uploading, downloading). You will develop secure, high‑performance, compliant data services and pipelines that reliably support imaging workflows and connected solutions in a regulated environment. 
 
Your role:
<ul><li>Provide technical leadership and coaching, driving engineering best practices, quality standards, and scalable design across the team.
</li><li>Design and build secure, compliant backend services and microservices supporting clinical data platforms and data movement.
</li><li>Develop scalable data pipelines and extend data lake architecture to ensure performance, governance, and reliability.
</li><li>Ensure system quality through code reviews, performance optimization, testing automation, CI/CD, and observability (monitoring/alerting).
</li><li>Maintain operational excellence by integrating components and resolving production issues (e.g., ingestion failures, schema drift, performance bottlenecks)
</li>Collaborate with cross‑functional stakeholders (product, UX/design, QA, data/AI, and engineering teams) to define, design, and ship features aligned with clinical and platform needs. 
<li>
</li></ul> 
You're the right fit if:
<ul><li>A Bachelor&rsquo;s or Master&rsquo;s degree in Computer Science/Engineering, Information Technology, or a related technical field.
</li><li>5+ years of end‑to‑end software development experience, including design, development, testing, and troubleshooting.
</li><li>Strong backend expertise in Golang and REST API design (Swagger/OpenAPI) with focus on reliability, resilience, and observability.
</li><li>Experience with event‑driven architectures (e.g., NATS/Kafka/RabbitMQ), Linux environments, and containerized microservices (Docker/Kubernetes).
</li><li>Solid database design and performance tuning skills (e.g., PostgreSQL/MS SQL), plus familiarity with cloud‑native and DevOps practices.
</li>Strong collaboration and leadership skills, with ability to mentor engineers and operate effectively in agile environments (medical/regulated experience is a plus). 
<li>
</li></ul><div> 
How we work together
 
We believe that we are better together than apart. For our office-based teams, this means working in-person at least 3 days per week.
 
 
About Philips
 
We are a health technology company. We built our entire company around the belief that every human matters, and we won't stop until everybody everywhere has access to the quality healthcare that we all deserve. Do the work of your life to help the lives of others.
 
<ul><li>Learn more about our business .
</li><li>Discover our rich and exciting history .
</li><li>Learn more about our purpose .
</li></ul>If you&rsquo;re interested in this role and have many, but not all, of the experiences needed, we encourage you to apply. You may still be the right candidate for this or other opportunities at Philips. Learn more about our culture of impact with care here .
</div>#ImageGuidedTherapy</div>

Senior Web Back End Developer Azurion Eye

2P Perfect Presentation

<div>
 
 We are seeking a highly skilled Senior .NET Backend Developer to design, develop, and maintain enterprise-grade backend systems, APIs, and integrations. The ideal candidate will have strong expertise in Microsoft technologies, software architecture principles, database development, and secure application design while contributing to scalable and high-performance digital solutions.
 
 
 
 
 
 
 Key Responsibilities
 
 
 <ul>
 <li>
 Design, develop, and maintain backend services and Web APIs using .NET Core, ASP.NET Core, C#, MVC, and RESTful APIs.
 </li>
 <li>
 Build scalable, secure, and high-performance enterprise applications following modern software engineering best practices.
 </li>
 <li>
 Design and optimize database structures, stored procedures, queries, and indexing using SQL Server and T-SQL.
 </li>
 <li>
 Develop and maintain applications using ASP.NET MVC, Razor Pages, Entity Framework Core, and Dependency Injection.
 </li>
 <li>
 Implement authentication and authorization mechanisms using ASP.NET Identity, OAuth2, and OpenID Connect (OIDC).
 </li>
 <li>
 Integrate enterprise systems such as Microsoft Dynamics 365 CRM, SharePoint, and third-party platforms through REST and SOAP services.
 </li>
 <li>
 Collaborate with frontend developers and UI/UX teams to deliver integrated end-to-end solutions.
 </li>
 <li>
 Deploy, host, and maintain applications on IIS, Azure environments, and containerized platforms.
 </li>
 <li>
 Participate in CI/CD implementation using Azure DevOps, GitHub Actions, or equivalent tools.
 </li>
 <li>
 Conduct code reviews, enforce coding standards, and mentor junior developers.
 </li>
 <li>
 Develop and maintain unit and integration tests to ensure code quality and system reliability.
 </li>
 <li>
 Troubleshoot, diagnose, and resolve application and performance issues.
 </li>
 <li>
 Maintain technical documentation including APIs, architecture diagrams, deployment procedures, and development standards.
 </li>
 <li>
 Participate in Agile development activities including sprint planning, estimation, reviews, and retrospectives.
 </li>
 </ul>
 
 
 
 
 
 Qualifications
 
 
 <ul>
 <li>
 Bachelor&rsquo;s degree in Computer Science, Software Engineering, Information Technology, or an equivalent field.
 </li>
 </ul>
 
 Experience
 
 <ul>
 <li>
 Minimum of 5 years of hands-on experience as a .NET Backend Developer.
 </li>
 <li>
 Proven experience developing enterprise web applications and backend services using Microsoft technologies.
 </li>
 </ul>
 
 
 
 
 
 Technical Skills
 
 
 <ul>
 <li>
 .NET Core / ASP.NET Core
 </li>
 <li>
 C#
 </li>
 <li>
 ASP.NET MVC
 </li>
 <li>
 ASP.NET Razor
 </li>
 <li>
 Entity Framework Core (EF Core)
 </li>
 <li>
 Web API Development
 </li>
 <li>
 Object-Oriented Programming (OOP)
 </li>
 <li>
 SOLID Principles and Design Patterns
 </li>
 <li>
 Dependency Injection (DI)
 </li>
 <li>
 Database Design and Optimization
 </li>
 <li>
 SQL Server, T-SQL, and Indexing
 </li>
 <li>
 ASP.NET Identity
 </li>
 <li>
 OAuth2 and OpenID Connect (OIDC)
 </li>
 <li>
 JavaScript and jQuery
 </li>
 <li>
 IIS Hosting and Application Deployment
 </li>
 <li>
 Git and TFS
 </li>
 <li>
 Visual Studio and VS Code
 </li>
 </ul>
 
 
 
 
 
 Preferred Skills
 
 
 <ul>
 <li>
 Experience with Azure Cognitive Services, ML.NET, or AI-enabled application development.
 </li>
 <li>
 Knowledge of Docker and containerized deployments.
 </li>
 <li>
 Experience with Azure DevOps and CI/CD pipelines.
 </li>
 <li>
 Familiarity with cloud-native application architecture and microservices.
 </li>
 </ul>
 
 
 
 
 
 Skills &amp; Competencies
 
 
 <ul>
 <li>
 Strong analytical and problem-solving skills.
 </li>
 <li>
 Ability to design scalable and maintainable software solutions.
 </li>
 <li>
 Strong understanding of software architecture and secure coding practices.
 </li>
 <li>
 Excellent communication and teamwork abilities.
 </li>
 <li>
 Ability to work effectively in Agile and fast-paced development environments.
 </li>
 </ul>
 
 
</div>

Senior Back-End .NET Developer

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