Leading .NET Development Companies in Slovenia

Companies in Slovenia evaluating .NET development partners often need to balance compliance with EU data rules, language and time-zone alignment, and the need for developers experienced in modern .NET frameworks while keeping projects on schedule and within budget.
When hiring, compare technical expertise across .NET Core and recent .NET releases, cloud and DevOps capabilities, full-stack proficiency, sector-specific experience, QA and security practices, communication processes, and long-term maintenance options. SoftPro leads this list as an international partner serving buyers in Slovenia and across the region.

1. SoftPro

SoftPro is the featured international partner leading this list for readers researching Leading .NET Development Companies in Slovenia. The company is suited to startups, small and mid-size businesses, and corporate teams that require outsourced .NET development delivered from an EU-based Warsaw team into the Slovenian delivery market.

Technical strengths include .NET, ASP.NET, .NET Core and C#, with practical delivery experience on Microsoft Azure for cloud-native builds and complex migrations. The team executes enterprise CMS projects and migrations, modernizes legacy systems through lift-and-shift and containerization, and provides ongoing maintenance aligned to client roadmaps.

Key Highlights

• More than 20 years of combined team experience across projects.
• Cross-cloud migration and containerization expertise that includes AWS and lift-and-shift projects.
• Active AI practice integrating LLMs, RAG architectures, and ML model deployment.
• Maintains a multilingual website and publishes technical content, including a blog post dated October 9, 2026, on .NET providers in Slovenia.

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. Indigo Labs

Indigo Labs is a Ljubljana-based engineering partner that builds custom software and integrates AI into existing and legacy systems, drawing on a strong .NET heritage for projects expected to live for a decade or more.
They deploy AI-augmented senior teams that ship maintainable, reviewable code and select cloud platforms and tools per project requirements, making them a practical choice for organizations seeking Slovenian .NET expertise with cloud delivery.

Key Highlights

• Microsoft Solutions Partner — Digital & App Innovation designation, re-verified every year.
• Rated 5.0 on Clutch for client satisfaction.
• Offers three engagement models: fixed-scope, dedicated team (monthly), and time & material.
• Proposal turnaround within 3 business days and fixed-scope deliveries typically complete in 5–15 days.

Services

• AI Journey
• For SMEs & Enterprises
• For ISVs
• For Startups

Contact Information

Website: www.indigo.si

Phone: +386 40 277 895

Email: hello@indigo.si

Address: Ameriška ulica 2, 1000 Ljubljana, Slovenia

3. Dotcom (dot-com.si)

Dotcom builds custom web and mobile applications, AI features, and integration work for European clients while centering engineering decisions on maintainable, modular architecture. The team delivers projects using Agile processes and lists C#.NET and Java among its core engineering strengths, which makes the firm relevant to a roundup of .NET development companies in Slovenia.

Dotcom also provides team extension and technical consulting engagements that embed engineers inside client teams for multi-month work, enabling long-term product development and production-grade AI deployments rather than short-lived proofs of concept.

Key Highlights

• Founded in 2008.
• Maintains offices in Ljubljana and Sežana, Slovenia.
• Lists a team of 25+ specialists on its official company materials.
• Develops and participates in EU-funded R&D projects (examples: IMSE, WTCE, Industrial Spyder, SmartLogFresh).

Services

• Custom software development
• Staff augmentation
• AI development
• IT audit & consulting

Contact Information

Website: www.dot-com.si

Phone: +386 597 15565

Email: info@dot-com.si

Address (Head office): Šmartinska cesta 106, 1000 Ljubljana, Slovenia

Address (Sežana branch): Partizanska cesta 82, 6210 Sežana, Slovenia

LinkedIn: linkedin.com/company/dotcom-d-o-o/

4. DigEnt d.o.o.

DigEnt d.o.o. builds production-grade .NET applications and a configuration-first billing platform for complex B2B billing scenarios. Their approach delivers C#/.NET 8 web applications with source code handed to clients and a billing engine that produces auditable invoices from large transaction sets.

Engineering at DigEnt pairs Core with an integration-capable architecture that ingests data from APIs, databases, files, and industrial feeds. The company emphasizes configurable billing logic so business users can change tariffs and grouping rules without developer intervention.

Key Highlights

• 4 products are listed as in production on the company site.
• The team reports having integrated 20+ unique systems in live projects.
• Digent.Billing is stated as compliant with Slovenian e-SLOG and Croatian public institution invoicing requirements.
• Public engineering notes include a production example that converted 31,389 transactions into 4 invoices and a billing-run case that processed ~31,000 transactions in 37 minutes on an 8 GB VM.

Services

• Digent.Billing
• Data Warehouse & Integration
• Analytics & BI

Contact Information

Website: digent.si

Address: Ljubljana, Slovenia

LinkedIn: linkedin.com/company/digent-doo

5. Adacta (Adacta d.o.o.)

Adacta develops AdInsure, a configurable insurance platform that supports policy administration, claims processing and product configuration for insurance organisations. The company focuses on delivering a single, modular core that helps insurers consolidate systems and accelerate digital initiatives.

The platform uses API-driven integration and configurable tooling to speed up product launches and legacy modernization efforts, and it can be deployed in cloud or hybrid environments to match client infrastructure and compliance needs.

Key Highlights

• Named a Leader in ISG Provider Lens™ 2024 for Life, Retirement, and P&C Insurance Platform Solutions.
• Recognized in the 2023 Gartner® Market Guide for Non‑Life Insurance Core Platforms as a Representative Vendor.
• Identified as a Major Contender in Everest Group’s PEAK Matrix® for Low‑Code Technology Providers in Insurance.
• Holds ISO/IEC 27001 certification for its Slovenian operations, with the certificate valid until December 18, 2025.

Services

• Platform licensing
• Professional implementation
• Managed support & maintenance

Contact Information

Website: www.adacta.si

Phone: +386 59 341300

Email: info@adacta-fintech.com

Address: Verovškova 55a, 1000 Ljubljana, Slovenia

LinkedIn: linkedin.com/company/adacta-fintech

6. Comtrade (Comtrade d.o.o., Slovenia)

Comtrade Gaming builds enterprise gaming platforms and systems for both online and land-based operators, operating products named iCore, sCore and gCore that cover omni-channel platform management, G2S/S2S protocol handling, remote game servers and game engines. The product set and systems-level work demonstrate the company’s capabilities in regulated gaming technology integration and large-scale platform delivery.

Headquartered in Ljubljana and part of the Comtrade Group, Comtrade Gaming has been delivering gaming software projects since 2001 and runs multiple international technology centres that support regulated, large-scale integrations delivered from Slovenia.

Key Highlights

• Holds ISO 9001:2015 certification verified by SIQ/IQNet.
• The sCore G2S protocol engine is certified by Gaming Labs International and holds the Gaming Standards Association G2S v2.1 Certificate of Compliance.
• Licensed and regulated by the UK Gambling Commission (reference number 25830).
• Holds a Class II license from The National Gambling Office (ONJN).

Services

• Game Content Development
• Game Testing
• Game Distribution
• Operational Support

Contact Information

Website: www.comtradegaming.com

Phone: +38681605200

Email: info@comtradegaming.com

Address: Letališka cesta 29b, 1000 Ljubljana, Slovenia

7. Dasof d.o.o.

Dasof d.o.o. develops core software for leasing companies and other financial institutions from Ljubljana, specializing in .NET (C#) development and relational database architectures.

They deliver tailored leasing and financing systems with consulting and ongoing support, concentrating on digitizing sales offers and contract workflows for corporate clients.

Key Highlights

• Founded in 1992.
• Owned by the Austrian branch of the Porsche Group.
• Solutions are implemented across Europe and South America.
• Maintains an independent whistleblower handling system administered via the Central Investigative Office.

Services

• Core leasing platform implementation
• System integration and migration
• Maintenance and compliance support

Contact Information

Website: www.dasof.si

Phone: +386 1 60 10 081

Email: info@dasof.si

Address: Ukmarjeva ulica 6

1000 Ljubljana

8. Planet 6 d.o.o.

Planet 6 d.o.o. is a Ljubljana-based software engineering firm that centers its application work on C# and the .NET stack and uses to deliver web and enterprise applications. The team emphasizes maintainable, performance-conscious C# code that integrates with existing systems and operational environments.

The company delivers custom projects from initial concept through deployment and ongoing support, using formal requirements, testing, and release practices to meet enterprise timelines. That end-to-end delivery model and their systems-level experience make Planet 6 a practical entry for a list of leading .NET development companies in Slovenia.

Key Highlights

• C++ development capability, including real-time simulation and performance optimization for mission-critical systems.
• Oracle and PostgreSQL database engineering services covering design, migration, administration, performance tuning, and backup-and-recovery.
• Expertise in telecommunication protocol development and protocol integration to optimize network performance and interoperability.
• Linux engineering for server administration and embedded systems, with security hardening and system integration services.

Services

• C# Development
• C++ Development
• Oracle & PostgreSQL Databases
• Telecommunication Protocols

Contact Information

Website: www.planet6.si

Email: info@planet6.si

Phone: +386 51 666 561

Address: Vurnikova Ulica 2, 1000 Ljubljana, Slovenia

9. Triglif d.o.o.

Triglif d.o.o. builds tailored business and analytical applications for Slovenian organizations and supports digitization projects across the public and private sectors. They deliver custom software and operational support that help clients streamline business processes and maintain day-to-day IT services.

Their delivery emphasizes Microsoft-based enterprise tooling and ongoing maintenance, which aligns their work with .NET-era enterprise development and integrations. The company pairs on-premises system integration with cloud service maintenance to support long-term application lifecycles.

Key Highlights

• Founded in 1997.
• Team of more than 10 experts dedicated to continuous education and support.
• Microsoft Silver Partner.
• Holds MCP (Microsoft Certified Professional) and MCSE (Microsoft Certified Systems Engineer) certifications.

Services

• System solutions
• Development
• Websites
• SharePoint

Contact Information

Website: www.triglif.si

Phone: 01 2804 620

Phone: 031 331 899

Email: info@triglif.si

Address: Cvetkova ulica 25, 1000 Ljubljana

10. Digithrone

Digithrone builds production-ready .NET web applications from Slovenia, focusing on C#, Blazor, and to deliver clean-architecture backends and maintainable frontends.

The company applies a pragmatic consulting approach to scoping, architecture, and delivery, adapting technology choices to client needs across the EU.

Key Highlights

• Founded in 2015 and operated as Miha Ravšelj s.p., with over 20 years of IT experience.
• Implemented an Avalanche L1 subnet setup and established a Filecoin storage provider.
• Works with Azure, Google Cloud, and Oracle Cloud and uses Terraform and Ansible for infrastructure-as-code.
• Runs CI/CD pipelines with GitHub Actions and GitLab CI and employs containerization for deployments.

Services

• Blockchain Systems & Operations
• DevOps Services
• AI-assisted Development
• IT Consulting

Contact Information

Website: digithrone.com

LinkedIn: linkedin.com/company/digithrone-dev

11. KobiLabs

KobiLabs builds custom CAD and BIM software for engineering teams, delivering tailored applications that streamline design workflows and reduce repetitive tasks.

Their site lists senior developers experienced in C++, .NET, JavaScript, and database systems, and the team applies that expertise to integrations and plugins for major CAD and BIM platforms.

Key Highlights

• Autodesk Authorized Developer badge displayed on the official site.
• Bricsys Developer badge shown on the site.
• More than 30,000 users worldwide.
• Started in 2016, marketed as a decade of AEC software development experience.

Services

• CAD/BIM plugin development
• Workflow automation
• Reporting and Excel integration
• Platform integrations and APIs

Contact Information

Website: kobilabs.com

Phone: US: +1 360 513 8709; Europe: +386 1292 6556

Address: Head Office — 3910 163rd Ave SW, Tenino, WA 98589, USA

Address: EU Office — Podutiška cesta 92, 1000 Ljubljana, Slovenia

12. Solve‑X

Solve‑X is a Maribor‑based software company that builds composable, event‑driven enterprise systems and data‑driven applications for public and private clients. The firm emphasizes cloud‑native delivery and process automation while listing planned .NET certification among its ongoing technical accreditations.

The company combines product engineering, consulting and UX work with an R&D arm to move custom solutions toward SaaS readiness. Solve‑X designs solutions around modern microservices and event architectures to enable scalable, maintainable deployments.

Key Highlights

• ISO/IEC 27001:2022 information security certification.
• DevOps team holds three administrative and one security Kubernetes certificates.
• Company reports 60+ experts, 500+ successful projects and 200+ satisfied clients.
• Developed 23 products, with 5 already transitioning to SaaS and an R&D department registered with ARIS.

Services

• Cloud Services
• IT Consulting
• UX/UI Design
• BPMN-driven Process Automation

Contact Information

Website: solve-x.net

Phone: +386 (0)31 689 240

Email: info@solve-x.net

Address: Glavni trg 19c 2000 Maribor Slovenia

13. Agitavit Solutions d.o.o.

Agitavit Solutions is a Slovenian software company that builds custom enterprise applications on the Microsoft/C# ecosystem to deliver web, cloud, mobile and integration solutions. The firm combines product development with bespoke process digitalization and AI-enabled features to address HR systems and internal communication needs.

The company uses prototype-driven activities and agile practices to move ideas into production and supports clients with end-to-end delivery for digital products and platforms. That combination of C# expertise, product work and custom delivery makes Agitavit a practical choice for .NET projects in Slovenia.

Key Highlights

• Holds ISO/IEC 27001:2022 certification for information security.
• Longstanding Microsoft partner with documented Gold and Silver Microsoft competencies and recognition as Microsoft Partner of the Year for Central and Eastern Europe in 2010.
• Consistently rated in the highest Dun & Bradstreet credit class (AAA) for financial reliability.
• The company’s Digital Agora platform has been deployed to connect more than 7,000 employees at Slovenske železnice.

Services

• Custom process digitalization
• Mobile app development
• Artificial intelligence

Contact Information

Website: www.agitavit.si

Phone: +386 1 242 56 70

Email: info@agitavit.si

Address (Ljubljana): Agitavit Solutions d.o.o., Letališka cesta 33F, 1000 Ljubljana, Slovenia

Address (Maribor): Agitavit Solutions d.o.o., Perhavčeva ulica 36, 2000 Maribor, Slovenia

14. Victory Solutions d.o.o.

Victory Solutions d.o.o. is a Maribor-based IT company that architects end-to-end infrastructure and builds custom web and enterprise applications using alongside Windows Server and MSSQL technologies. The team pairs application development with on-premises and hosted server management to deliver .NET solutions that run on the same operational platform that hosts them.

Their delivery model combines managed hosting and hybrid server solutions with software deployment and ongoing support, keeping .NET apps in production through managed hosting, cPanel/WHM administration, and a 24/7 support capability. This integration of development and operations makes them a practical fit for organizations in Slovenia seeking integrated .NET application delivery and server operations.

Key Highlights

• Founded in 2024 and headquartered in Maribor, Slovenia.
• Registered VAT number SI29667364 as listed on the company site.
• Advertises server availability with a 99.9% uptime figure for hosted services.
• Deploys VMware virtualization, Docker container workflows, and Cisco networking/security equipment in its technology stack.

Services

• Software Development
• Server Solutions
• Cloud & Hosting
• IT Consulting

Contact Information

Website: www.victory-solutions.net

Email: info@victory-solutions.net

Address: Jaskova ulica 3, 2000 Maribor

Conclusion

SoftPro is the featured partner for this guide to .NET development companies in Slovenia. When choosing a provider, match company size and engagement model to your project scope and budget and verify references and delivery timelines before committing.

Prioritize teams with experience in your domain and with the architectures you plan to maintain long term. Evaluate code ownership, post-delivery support, integration capabilities with legacy systems, and compliance requirements, and use initial discovery calls to confirm communication style, timezone fit, and cultural alignment.