Top Software Development Companies in Brussels

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Software Development Belgium Brussels

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Top Featured Software Development Companies

Underside
4.6
(26 reviews)
Let's make the world better, thanks to technology.
Underside has been a digital agency active for over 25 years in the digital transformation of companies. We support companies in their projects from the creation of the idea, then through the phases of development, deployment, and maintenance of solutions. We develop mobile applications, websites, e-commerces, management software, and are particularly fond of augmented and virtual reality, chatbots, and artificial intelligence in general. Support for digital transformation (Design Thinking) • Application development • Graphic creations • Maintenance of Apple IT parks • Cybersecurity.
9 works in Software Development
Located in Charleroi, Belgium
From €10,000 for Software Development
Worked in Restaurants (+21)
Speaks French, English
11-50 members
TESIBY
5
(2 reviews)
Senior engineers for SaaS, AI & custom software.
Recommended
We’re a senior software development team building SaaS products, AI-powered applications and custom web platforms. We work with startups, established businesses and agencies that need an experienced technical team to take ownership of a product, a feature set or a difficult integration. Our core stack includes Laravel, PHP, Vue/Nuxt and modern cloud infrastructure. We handle architecture, backend and frontend development, APIs, third-party integrations, automation and AI-assisted workflows. We can join an existing codebase or build a focused product from scratch. We also build and run our own SaaS products, Contalys (AI accounting automation) and Grantium (EU funding applications), so we know what production software demands. We intentionally keep the team small and senior: direct communication, practical technical decisions and reliable delivery without unnecessary layers of account management.
6 works in Software Development
Located in Bucharest, Romania
From €1,000 for Software Development
Worked in Accounting (+3)
Speaks English, Romanian(+1)
1-10 members
Novity
5
(12 reviews)
Tech, Product, Data, AI & QA Partner | 80+ Clients
Novity supports CEOs, CTOs and Product Leaders in accelerating their roadmaps and identifying the technology levers that drive growth. With teams across France, Mauritius and Madagascar, we operate through a multi-disciplinary model combining tech strategy, product architecture and continuous delivery. Our team extension model meets the requirements of European tech organisations. Since 2019, we have been supporting software companies, startups and digital factories within small and mid-sized businesses. More than 80 organisations trust us, including Adeiz, Kolsquare, CapCar and iQera. Our multilingual experts (French and English) work in demanding environments across FinTech, retail, healthcare, media and marketing, HRTech and B2B. Our 4 areas of expertise: 🎯 Consulting & Tech Strategy: architecture, audits, technical scoping and roadmaps. 🚀 Product Management & Design: discovery, backlog management and UX/UI journey design. 💻 Software & Product Engineering: cloud-native development, SaaS and QA. 🤖 Data, AI & Security: data platforms, modelling, AI integration and security. Our approach: stable co-delivery. You meet our teams, assess their capabilities and select the profiles that best fit your needs. They integrate directly into your agile rituals—dailies, sprints and delivery processes—without unnecessary intermediaries. They embrace your product culture and operate as genuine members of your team, ensuring full alignment with your business objectives while preserving the technical knowledge built throughout your projects. Why work with us? → 9.2/10 average client satisfaction score. → 97%+ monthly mission renewal rate. → 40+ engineers certified on the Claude Code AI model. → 90% of our experts come from product and startup environments. → Members of France FinTech, La Retail Tech and French Tech Mauritius.
4 works in Software Development
Located in Paris, France (+2)
From €5,000 for Software Development
Worked in Marketing & Advertising (+3)
Speaks English, French
51-200 members
Innovative Solutions
4.9
(14 reviews)
Nos solutions numériques sont adapté à vos besoins.
Innovative Solutions is a Custom Software Development company located in Brussels. It has the advantage of offering a good quality-price ratio and a permanent accompaniment during the whole programming process of your project . The development starts immediately after signing the contract and respects the deadlines. Innovative Solutions creates applications that reflect your corporate image and ensure a unique User Experience . It also accompanies you in the digital transition of your structure to help you better evolve in our increasingly digital environment. Our expertise: - Development of Mobile and Web Applications (IOS, Android, hybrid, ERP, CRM) - Accompanying the company in a digital transition with the construction of a team - Consulting and IT audit for an optimization of the Customer Experience , analysis of existing solutions, and integration of adapted solutions. Our quotations are complete and include examples of mockups to give you a visual idea and a timetable for the project. Do you have a digital project in mind? Don't hesitate to ask for a quote.
22 works in Software Development
Located in Brussels, Belgium
From €10,000 for Software Development
Worked in Marketing & Advertising (+22)
Speaks French, English
11-50 members
Brights
5
(13 reviews)
Bright people building bright software | Custom Software Development Agency
Highly recommended
Top awarded
Brights is a software development company that helps from maturing startups and enterprises turn concepts into scalable products. With 120+ engineers, designers, and analysts , we’ve delivered 300+ projects in 30 countries — from MVPs for scaling startups to full-scale platforms for Fortune 500 companies . Our track record includes 24 international awards , ISO/IEC 27001:2013 certification , and 100% job success on Upwork — proof that quality and accountability are not just promises but part of our process. 🤝 Trusted by: Microsoft, MasterCard, Samsung, McDonald's, Pepsi, Philip Morris, Danone, Activia, Skoda, Suzuki, Huggies, BetterMe, Headway What we build: 🔹 SaaS and marketplace platforms 🔹 Mobile apps (native & cross-platform) 🔹 Data analytics and BI dashboards 🔹 Cloud architecture & DevOps 🔹 AI-driven features and workflow automation We combine product mindset, engineering precision, and data-driven decision-making — helping teams launch faster, operate smarter, and grow sustainably. That’s why most clients stay with us for 3+ years , evolving from MVP to enterprise-grade systems together. 🚀 If you value teams who think beyond delivery — let’s build a solution that lasts .
18 works in Software Development
Located in Warsaw, Poland (+1)
From €10,000 for Software Development
Worked in Insurance (+22)
Speaks English, Ukrainian
51-200 members
Gaspa Agency
4.9
(18 reviews)
Web, mobile & AI agency | Custom applications, SaaS & business software | +150 clients
Recommended
Top awarded
Gaspa Agency is a digital agency based in Brussels. We design, develop, and evolve custom digital products, from the initial concept to their production. Our core business: • Web and mobile applications • SaaS platforms and marketplaces • CRM, ERP, and business software • Custom websites and e-commerce • Artificial intelligence integrated into business processes • Branding, product design, and UX/UI Our difference: we start neither from a technology nor from a fixed specification. We first analyze the business challenges, uses, constraints, and objectives to define what really needs to be built. Our method combines Discovery and Delivery: • Understand the need and identify priorities • Design a clear, coherent, and testable experience • Develop a reliable and scalable architecture • Test, deploy, and measure results • Evolve the product based on actual usage Product strategy, UX/UI design, branding, development, artificial intelligence, QA, and management are brought together within the same team. This organization helps secure decisions, limit technical risks, and accelerate deployment without sacrificing quality. Gaspa Agency supports ambitious SMEs, scale-ups, mid-sized companies, and large corporations in Belgium and internationally. Companies looking for a team capable of understanding their challenges, carrying a product vision, and transforming it into a digital experience worthy of their ambitions. Do you have a digital product to launch, modernize, or take over? 👉Let's discuss what your company really needs to build!
Looking for work in Software Development
Located in Brussels, Belgium
From €10,000 for Software Development
Worked in Home Services (+22)
Speaks English, French
1-10 members

All Software Development Services in Brussels

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