I'm Vega Collard, a medior to senior .NET architect and SQL specialist with over a decade of experience delivering scalable back-end solutions and agile coaching. I enjoy...
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I'm Vega Collard, a medior to senior .NET architect and SQL specialist with over a decade of experience delivering scalable back-end solutions and agile coaching. I enjoy...
See MoreI'm Zdravko Zdravkov, a Bulgarian software engineer based in Belgium. I design, develop, and support distributed, business-critical applications using .NET, RESTful APIs,...
See MoreHi! I’m Régis André, a senior freelance developer with 6+ years of professional experience and over 13 years of coding. I specialise in Flutter for iOS and Android and li...
See MoreSenior Front-End Engineer with 5+ years of experience building scalable, high-performance web applications. Strong expertise in React, Angular, and TypeScript, with hand...
See More- Applied a DevOps approach to deliver end-to-end SAP solutions, including analyzing business processes with BPMN, developing tailored solutions, preparing UAT scripts, a...
See MoreI am Yosri JBALI, a Senior Java Software Engineer (mostly backend) with over 13 years of experience in designing, developing, and optimizing backend systems. My expertise...
See MoreI’m a Software Engineer with a strong background in Deep Learning, developed through my master’s thesis on Deepfake detection. Beyond my academic work, I’ve completed sev...
See MoreI'm an App Developer expert based in Brussels, Belgium. I specialise in AWS, Docker, and DynamoDB, and bring hands-on experience to every brief.
See MoreI am a fullstack developer with a speciality in cross-platform apps (one code multiple platforms, isn't it cool?), in the frontend I work with Flutter and dart, I build p...
See MoreI'm a full-stack web and mobile developer with a strong background in React.js, TypeScript, Node.js, NestJS, Prisma, MongoDB, and real-time architectures. I love turning ...
See MoreI’m a QA Test Engineer who loves turning complex software into reliable, user-friendly experiences. I focus on finding hidden issues, improving test coverage, and working...
See MoreI'm Dhivakaran Jayapal, a dynamic, results-oriented engineer with 15+ years of Java-focused development experience. I’m passionate about delivering robust software, colla...
See MoreWe have over 14,500 App Developers who've worked in many different industries and cover various styles and skillsets.
Start your searchProjects that brands and startups post most often.
End-to-end build of a v1 product: front-end, back-end, and deployment.
Build your MVPShort engagement to clear a backlog of bugs and stabilise a release.
Stabilise your releaseAdd LLM-powered features to your product, copilots, semantic search, or summarisation.
Integrate AIReact Native or Flutter app for iOS and Android from your existing spec.
Build your appDevelopment specialisms and the cross-functional roles you'll often hire alongside.
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Reviews
“Ritik has done a good job in developing and publishing mobile app and his production support after deployment is helping me to manage app better.”
Abhijeet @ Yoday
Jul 27, 2026
“We had a great experience working with Nitin Jha. He is a skilled Flutter Developer who quickly understood our requirements and delivered a high-quality, user-friendly mobile application on time. His professionalism, technical expertise, and responsiveness throughout the project were outstanding. We highly recommend Nitin...”
sapna @ jemini
Jul 26, 2026
“Mark Scicluna is a great developer. I confidently endorse Mark’s capabilities and character.”
Theodore @ Rhizomenet Pty. Ltd.
Jul 24, 2026
“*"Working with Piyush was a smooth experience. He delivered a clean, professional website on time and was responsive throughout the project. Highly recommended for anyone looking for quality web development services."*.”
shraddha @ swastik clinic
Jul 23, 2026
“Jaskaran singh built my website from start to finish, and the entire process was smooth and professional. He understood exactly what I needed, delivered on time, and the final result exceeded my expectations. The site looks clean, works flawlessly, and was exactly what my business needed. I highly recommend him to anyone...”
tirath @ tirath electronics
Jul 15, 2026
“Omais is a highly skilled and reliable freelancer who did a fantastic job on my Web App project. I trusted him with complex technical tasks, including working directly within a Windows Server VPS environment, and he handled everything seamlessly. He is professional, efficient, and delivers great results. I highly recommend...”
Julio @ Two Brothers Flooring, LLC
Jul 13, 2026

Clients Rate Twine App Developers 4.97 / 5.0
on average across 917917 reviews
3–5 minutes. Tell us about your project, your timeline, and how you want experts to contact you.
Within 24 hours, you'll see a shortlist of vetted App Developers matched to your project.
Flexible payments on your terms, bill experts directly or use the Twine vault for added security.
Transparent rates, no hidden markup, and a payment path for every need.
Agencies bury a 20–40% markup inside the retainer, you never see it. On Twine, you set the price and you see the platform fee as a separate, explicit line. No surprises at checkout.
Prefer your own payment flow? Pay your expert outside Twine, incurring no commission fees. Most useful for ongoing or trusted relationships.
Funds are held in escrow and only released when you approve the deliverables. If the work isn't right, your money doesn't move. 10% commission on payments up to $10,000, just 5% on anything above.
Pick the role, the experience level and how long you need. We’ll show you what similar projects have cost on Twine. It’s a guide, not a quote.
Estimates only. Actual budget is set by you and agreed with your expert before any work begins.
ESTIMATED RANGE
€4,300 – €11,500
Full possible range for a mid-level App Developer over 2–4 weeks
Common questions answered before you post a project.
An App Developer is a skilled professional responsible for designing, coding, and maintaining applications for mobile or web platforms. They analyze user requirements, create software solutions, and collaborate with designers to enhance user experience. App Developers utilize various programming languages and frameworks to build functional and appealing applications. Their roles may vary, including front-end development, back-end development, or full-stack development, depending on the project needs.
Exceptional App Developers possess a unique combination of technical skills and soft skills. They have proficiency in multiple programming languages and frameworks, ensuring versatility in project execution. Strong problem-solving abilities allow them to troubleshoot issues efficiently. Additionally, effective communication skills foster collaboration with clients and team members. A passion for continuous learning keeps them updated with industry trends and emerging technologies, further enhancing their capabilities.
Typical day rates for App Developers in Belgium vary by experience level:
These are indicative ranges based on Twine project data. Final budgets depend on project scope and are agreed directly with your freelancer.
To recognize the ideal App Developer, start by reviewing their portfolio for relevant experience and successful projects. Look for testimonials or case studies that highlight their strengths. Conduct thorough interviews to assess their technical knowledge and problem-solving approach. A strong candidate should demonstrate effective communication, a proactive mindset, and an understanding of your project goals. Trust your instincts; the perfect fit will resonate with your vision.
When interviewing an App Developer, consider asking the following key questions:
These questions will help gauge their expertise and compatibility with your project.
Hiring an App Developer in Brussels involves several key steps. First, clearly define your project requirements, including the type of app you want to develop and any specific features needed. Next, leverage platforms like Twine to find a pool of qualified freelancers. Review their portfolios, focusing on past projects and client feedback. Finally, conduct interviews to assess their technical skills, communication style, and cultural fit with your team.
Hiring a freelance App Developer offers flexibility and potentially lower costs, as freelancers often have fewer overhead expenses than agencies. Freelancers typically provide personalized attention and can adapt quickly to project changes. Conversely, agencies may offer a broader range of services, including project management and additional resources, which can be beneficial for larger projects. Agencies also provide more stability and assurance regarding deadlines due to their structured processes.
A comprehensive project brief for an App Developer should include the following elements:
Including these details will help attract the right candidates for your project.
Hiring on Twine is simple.
Post your project and meet your expert within 24 hours. Over 45,000+ high growth companies that trust Twine.