INSSIO
Software Engineering. Beyond Code.
INSSIO is a software engineering company helping established businesses build, modernize, and scale business-critical software. Since 2013, our senior engineers and QA specialists have worked as embedded members of client teams across North America and Western Europe. We support software that already runs the business - including claims platforms, logistics and maritime systems, energy and billing solutions, analytics platforms, and other operational applications. Our core services include: - Custom software development and modernization - Senior .NET / Azure staff augmentation - QA, manual testing, and Playwright automation - AI application development, Generative AI, and AI agents Core technologies: .NET / C#, Microsoft Azure, Angular, TypeScript, SQL Server, Blazor, MAUI, Playwright, OpenAI, and modern AI frameworks. Companies typically work with INSSIO when they need additional senior engineering capacity, want to replace or strengthen an underperforming software vendor, need to modernize an existing application, or want to improve release quality and automation. We focus on long-term engineering partnerships rather than short-term project delivery. Our teams integrate directly with client organizations, build deep product and domain knowledge, and take ownership of meaningful parts of the software and delivery process. Why INSSIO: - 13+ years in software engineering - Client partnerships lasting 5–10+ years - Senior-led delivery - Strong Microsoft/.NET/Azure specialization - Development and QA under one roof - ISO 27001 certified - Direct access to engineers and company leadership 47 people in their team
Speaks English
2 projects in their portfolioWorks remotely across the globe
Sortlist member since 2026
Founded in 2013
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Services
2 services offered by INSSIO
Description INSSIO builds, modernizes, and extends business-critical software for established companies. Our senior engineers work directly with client engineering teams on complex .NET/Azure applications already running core business operations. We support new feature development, legacy modernization, system integrations, API development, architecture improvements, cloud migration, and long-term product evolution. Our core software engineering stack includes .NET / C#, Microsoft Azure, Angular, TypeScript, SQL Server, Blazor, and MAUI. Engagements typically start with one or two senior engineers and can grow into long-term embedded teams. We are best suited to companies with existing software, an internal technical owner, and a need for additional senior capacity, modernization, vendor replacement, or greater delivery continuity.Skills in Software Development (12) C#SaaSSoftware DevelopmentSoftware EngineeringAngularAPI DevelopmentApplication DevelopmentMicrosoft Azure.NET DevelopmentApplication Modernization+2Works in Software Development (2) Clients in Software Development (2) KVSA B.V.Transportation | internationalSedgwick Claims Management ServicesInsurance | international
Learn more about Software DevelopmentDescription INSSIO helps established companies integrate Generative AI and AI agents into real business processes and existing software products. We design and build AI-powered applications, custom agents, conversational assistants, knowledge and document workflows, and agentic automations using modern LLM platforms and APIs. Our focus is practical enterprise AI: connecting AI to existing applications, APIs, business data, Microsoft environments, and operational workflows rather than building experimental models from scratch. Typical engagements include AI agent development, internal knowledge assistants, RAG-based solutions, workflow automation, conversational interfaces, AI-enabled features for existing .NET applications, and integration with platforms such as OpenAI, Azure AI, and Microsoft Copilot Studio. We are best suited to companies that already have software, data, and business processes in place and want to introduce AI in a controlled, useful, and maintainable way.Skills in Artificial Intelligence (7) AI DevelopmentArtificial IntelligenceIntelligent Bot DevelopmentGenerative AIText generative AIAI AgentsConversational AI
Learn more about Artificial Intelligence
Team
47 members in INSSIO's team
StoryINSSIO was founded in 2013 with a simple idea: strong software partnerships require more than good code. We grew through long-term client relationships, with engineers becoming embedded in client teams and taking ownership of business-critical systems. That mindset still defines how we work today.
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Contact
Contact details of INSSIO
Details
- HeadquarterJove Ilića 67, Belgrade, Serbia