Leading Custom Software Development Companies in Luxembourg

Companies in Luxembourg that need custom software often face strict regulatory requirements, multilingual needs, legacy-system integrations, and tight delivery timelines. When evaluating providers, compare technical stack and industry experience, development and engagement models, security and compliance practices, communication and language capabilities, time-zone overlap and delivery capacity, pricing and post-launch support, and documented references or case studies.

SoftPro is the featured international partner leading this list and serves buyers in Luxembourg and across the region. Use the comparisons that follow to identify vendors whose delivery approach, technical strengths, and risk management align with your project goals and procurement criteria.

1. SoftPro

Headquartered in Warsaw, Poland, SoftPro is the featured international partner on this list for Luxembourg readers seeking custom software delivered from an EU-based team. The company engages with startups, small and medium enterprises, and corporate teams on projects ranging from new web platforms to enterprise migrations and long-term product development.

SoftPro builds solutions on, .NET Core and C# and uses Microsoft Azure to modernize legacy systems and execute enterprise CMS migrations when required. The team applies cloud-native patterns, lift-and-shift migrations, containerization and AI integration to improve scalability, simplify operations and enable long-term maintenance.

Key Highlights

• More than 20 years of combined team experience in custom software delivery.
• Front-end expertise in React and for building responsive web applications.
• Delivered a documented Umbraco implementation for a client CMS project.
• Case studies include business portals, CRM/HRM systems, SaaS ETL platforms, support systems, and social networking projects.

Services

• Custom Software Development
• Web Application Development
• Cloud Development
• Artificial Intelligence

Contact Information

Website: soft-pro.pl

Phone: +48 571 282 759

Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

LinkedIn: www.linkedin.com/in/kyrylo-o

2. QodeArt

QodeArt is a Luxembourg-based technology consultancy that designs and builds custom web, mobile, and cloud-native applications for regulated and enterprise environments. The firm pairs full-lifecycle engineering—architecture, iterative development, CI/CD pipelines, and production support—with modern stacks such as React, Angular, .NET, and.

QodeArt integrates DevSecOps and cloud adoption practices into projects to meet GDPR and other regulatory requirements common in Luxembourg markets. The company serves healthcare, logistics, nonprofit, and blockchain clients, demonstrating delivery experience across security-sensitive and enterprise-grade systems.

Key Highlights

• Led the integration of PingOne Advanced Identity Cloud (ForgeRock) as a global IAM platform for a large enterprise with 50,000+ employees.
• Uses Terraform, Kubernetes, and Azure DevOps for infrastructure and CI/CD, and integrates security tooling including SonarQube, Snyk, Trivy, and OWASP ZAP.
• Cloud adoption and DevSecOps engagements have reduced client infrastructure costs by up to 40% in documented projects.
• Offers an IT hiring and technical screening service with structured assessments, competency-based interviews, and candidate evaluation reports.

Services

• Software Development
• DevSecOps
• Cloud Adoption
• Hiring & Talent Acquisition

Contact Information

Website: www.qodeart.com

Phone: +352 661 553 444; +352 621 701 986

Email: info@qodeart.com

Address: Color Business Center, 21 Rue du puits Romain, Bertrange, Luxembourg, L-8070

3. Vigasoft S.à r.l.

Vigasoft S.à r.l. is a Luxembourg-based software company that builds tailored applications for B2B and enterprise clients across the EU, pairing engineering rigour with security-minded processes to deliver production-ready systems.
Their delivery uses container orchestration to integrate legacy systems and scale services while maintaining compliance with EU data regulations.

Key Highlights

• Operates Bizzlink, an in-house e-invoicing SaaS that functions as a PEPPOL-certified Access Point.
• Bizzlink provides a web interface, a REST API, and an on-premises connector for sending and receiving e-invoices.
• Bizzlink performs automatic format conversion for invoicing standards including ZUGFeRD, Factur‑X, and UBL.
• Commits to respond to project enquiries within 24 hours and includes a free initial consultation.

Services

• Custom Web Applications
• Cloud & Managed Hosting
• System Integration
• Automation & Workflow Digitization

Contact Information

Website: vigasoft.lu

Email: hello@vigasoft.lu

4. Docler Holding

Docler Holding is a Luxembourg-based corporate group that builds and operates digital products across media, streaming, sports, payments, and other sectors. The company coordinates in-house engineering, product design, and digital operations to deliver software, websites, and hosting for its portfolio companies and external clients.

Docler Holding supports full software lifecycles from research and solution architecture through development, deployment, and ongoing maintenance. Its delivery model emphasizes shared technical teams and platform operations that serve multiple brands within the group.

Key Highlights

• Founded in 2001 and operating as a diversified holding with a technology core.
• Employs more than 1,500 people across its group of companies.
• Manages a portfolio of 18+ companies and over 80 websites and leading brands.
• Relocated its Luxembourg headquarters to the Luxembourg Airport area in 2026 and runs regular internal tech events such as Docler Tech Talks and the OneByborg Tech Summit.

Services

• Software & application development
• Solution architecture & system analysis
• Website maintenance & operations
• Hosting & operational support

Contact Information

Website: doclerholding.com

Phone: +352 26 11 18 1

Email: info@doclerholding.com

Address: 4 Rue Lou Hemmer, L-1748 Findel, Senningerberg, Grand Duchy of Luxembourg

5. MaPS System (MaPS S.A.)

MaPS System builds an enterprise data platform that centralizes and governs product, reference, and media information for brands and distributors. The platform is designed to handle complex catalogs with workflow-driven governance to accelerate time-to-market and reduce manual data tasks.

MaPS System maintains a Luxembourg office in Foetz, offering local presence for clients in Luxembourg seeking platform deployment and integration. Its delivery uses configurable, low-code implementation patterns and open APIs to integrate with ERP and e-commerce systems, enabling most customers to be operational within a few months.

Key Highlights

• Founded in 2011 as MaPS SA.
• More than 8,000 users and a 4.8 / 5 rating on G2.
• Supports industry standards including FAB‑DIS, ETIM and GS1 and prepares customers for Digital Product Passport requirements.
• License pricing remains fixed regardless of data volume or number of users.

Services

• MDM
• PIM
• DAM

Contact Information

Website: www.maps-system.com

Phone: +352 281 315 — Mon–Fri 09:00–17:00

Email: info@maps-system.com

Address: 12 Rue de l’Industrie, L-3895 Foetz Mondercange

6. InTech SA (POST Group)

InTech SA (POST Group) builds and integrates custom enterprise software for Luxembourg organisations by combining multidisciplinary teams of project managers, architects, technical experts and developers to deliver end-to-end solutions.

Its engineering approach emphasizes modern frontend frameworks like Angular and React, microservices backends using Java/Spring, Node.js or Scala, and cloud-native deployments on Azure and AWS to support regulated sectors and digital transformation projects.

Key Highlights

• Founded in 1995.
• Became a subsidiary of POST Luxembourg in 2014.
• Awarded the Best Workplaces™ Luxembourg 2024 label for the ninth consecutive year in the Large Companies category.
• CI/CD and DevOps toolchain includes Azure DevOps, GitLab and GitHub.

Services

• IT Consulting
• Project Outsourcing
• Expertise Delegation
• Innovation

Contact Information

Website: www.intech.lu

Phone: +352 53 11 53-1

Address: 208, rue de Noertzange L-3670 Kayl Luxembourg

7. ARHS Group

ARHS Group is an IT services company headquartered in Belvaux, Luxembourg that delivers bespoke software, data science, cloud, and machine learning solutions across Europe. The firm targets production-ready, enterprise-grade systems that connect complex, multi‑national architectures and data landscapes.

Its delivery model combines the principles of the Rational Unified Process with Scrum and an enterprise-architecture approach to translate business processes into scalable IT systems and cross-system integrations. ARHS emphasizes automation and operational readiness to keep projects on scope, on time, and on budget.

Key Highlights

• Accenture announced the acquisition of ARHS Group to expand public-service digital transformation capabilities across Europe.
• Operates eight offices across Luxembourg, Belgium, Greece, Italy, Portugal and Bulgaria.
• States a 40% reduction in data-warehouse development and maintenance effort through automation.
• Maintains a Big Data Competence Centre as part of its Business Intelligence and Analytics unit BIs2C.

Services

• Software development
• Data science
• Cloud
• Machine learning

Contact Information

Website: arhs-group.com

Address: Boulevard du Jazz, 13, L-4370 Belvaux, Luxembourg

Phone: +352 26 11 02 1

Email: info@arhs-group.com

8. MaPS (alternate reference)

MaPS System is a Luxembourg-headquartered vendor that centralizes product, reference and media data on a single, configurable platform for brands and distributors.
The platform uses low-code configuration, AI-assisted data enrichment, and supports both cloud and on-premise deployment to accelerate catalogue time-to-market and integrate with existing IT stacks.

Key Highlights

• Founded in 2011 as an editor of unified MDM, PIM and DAM solutions.
• More than 8,000 users are reported on the platform.
• Rated 4.8 / 5 on the G2 review platform.
• License pricing remains fixed regardless of data volume or number of users.

Services

• MDM
• PIM
• DAM

Contact Information

Website: www.maps-system.com

Phone: +352 281 315 Du lundi au vendredi, de 9h00 à 17h00

Email: info@maps-system.com

Address: 12 Rue de l’Industrie, L-3895 Foetz Mondercange

9. DELTALUX SARL‑S

DELTALUX builds custom software and ERP systems in Luxembourg to replace Excel-based processes with dedicated applications. Their offerings cover invoices and quotations, time tracking, mobile apps, dashboards, automation, API integrations, and cloud hosting.

They deliver tailored integrations that export bookkeeping data in clients' required formats and implement interfaces for external systems. The site is presented in multiple languages to support local and multilingual project communication.

Key Highlights

• The Luxembourg state subsidy covers 70% of development costs for Luxembourg companies.
• The website lists 120+ satisfied customers.
• Cybersecurity services include audits, ISO 27001 and NIS2 compliance assessments, and penetration testing.

Services

• Websites & SEO
• Cybersecurity
• GPS Tracking
• Social Media

Contact Information

Website: deltalux.lu

Phone: 26 17 66 17

Address: 5A, Place Count Basie, L-4369 Belval

10. Lëtzbytes Solutions

Lëtzbytes Solutions is a Luxembourg-based technology partner that builds custom web and mobile applications, resilient cloud infrastructure, and workflow automation across the full product lifecycle. They present end-to-end delivery from discovery and architecture through production and scale, emphasizing production readiness with monitoring and security hardening.

Their engineering teams work with modern stacks—React, Node.js, React Native, and Flutter—and pair those with cloud and DevOps tooling to deliver production-ready systems via short, predictable sprints, clear documentation, and transparent progress tracking.

Key Highlights

• 50+ projects delivered.
• 22+ years of experience.
• Senior engineers only across the engineering roster.
• Offers CTO-as-a-Service, Due Diligence, and Roadmaps as part of IT consulting.

Services

• Web & Mobile Development
• Infrastructure Management
• DevOps & CI/CD
• AI & Workspace Modernisation

Contact Information

Website: letzbytes.lu

11. Meaningfy SARL

Meaningfy SARL is a Luxembourg-based consultancy and software developer that builds custom semantic interoperability solutions for European public bodies and mid-sized enterprises by turning disparate data into Linked Data and enterprise knowledge graphs. The company focuses on harmonising legacy and modern data sources to enable clearer, machine-readable knowledge that supports cross-organisation reporting and discovery.

The team pairs semantic-web technologies and natural language processing with an iterative discovery-to-delivery workflow to produce production-ready integrations and data harmonisation across complex XML sources and modern systems. Their delivery model emphasises collaborative design, iterative implementation, rigorous testing, and seamless integration into existing environments.

Key Highlights

• Mapping Workbench is Meaningfy’s collaborative platform for converting XML schemas to RDF/OWL and was developed with contributions from over 30 semantic engineers and architects.
• The Mapping Workbench uses a two-layer mapping approach (conceptual and technical) and supports RML-based implementations to manage evolving XML schemas.
• Mapping validation follows a test-driven approach with SPARQL-based checks, XPath coverage measurement, and SHACL validation to enforce semantic output compliance.
• Meaningfy publishes research and tooling outputs, including an open-source RDF Differ utility maintained under the meaningfy-ws project set.

Services

• Enterprise Knowledge Graph
• Semantic Data Strategy & Architecture
• NLP Technologies Deployment
• Software Development

Contact Information

Website: meaningfy.ws

Email: hi@meaningfy.ws

Address: 61 Route de Fischbach, Lintgen, L-7447, Luxembourg

12. DataThings S.A.

DataThings S.A. is a Luxembourg-based University of Luxembourg / SnT spin‑off that builds real-time analytics and digital-twin software for operational decision-making using its GreyCat framework. The company positions its technology to turn live, time‑evolving data into actionable insights for industrial and public-sector operations.
GreyCat is designed to analyse large-scale, time‑evolving datasets on either commodity hardware or data‑centre infrastructure and can run in complete isolation with a 10Mb disk footprint. That delivery profile and the company’s domain work make DataThings a fit for custom software projects in IoT, transportation, building management and financial services.

Key Highlights

• Accredited by LuxInnovation to consult on the Fit4AI program for evaluating and maturing AI use cases.
• Executes missions under Luxembourg’s Ai4Gov program to help public bodies investigate and deploy AI in operations.
• Partnered with LuxProvide to offer customers seamless and efficient scaling for production deployments.
• KOPR solution was successfully deployed at Creos Luxembourg and won the FEDIL Innovation Award 2024 in the Data & AI category.

Services

• Custom Software Development
• Consultancy
• Training

Contact Information

Website: www.datathings.com

Phone: (+352) 20 60 03 15

Email: contact@datathings.com

Address: 5, rue de l'industrie, Luxembourg, L-1811, LUXEMBOURG

Conclusion

Choose a provider based on project scale, sector regulation, data and integration complexity, and whether you require local on-the-ground support or an EU-based delivery model. Prioritise vendors whose delivery approach matches your needs for production readiness, multidisciplinary teams, and specific technology patterns such as low-code configuration, semantic interoperability, real-time analytics, or ERP replacement, and balance those against budget and ongoing operational requirements.

SoftPro is the featured international partner on this list for readers seeking custom software delivered from an EU-based team; consider local Luxembourg firms when proximity, in-country experience, or consolidated corporate offerings better fit your governance and procurement needs.