India-built AI & blockchain engineering since 2017 · Serving clients worldwide

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.NET Development Services

.NET development services for enterprise applications, APIs, cloud services and Windows-integrated systems. We cover what we build on modern .NET and ASP.NET Core, how we design for Azure or AWS, how we modernize .NET Framework estates, and when .NET is a better fit than Java or Node.js for your organization.

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  • Prototype in weeksProof before big budgets
  • Weekly demosSee progress, not slides
  • You own the codeFull IP assignment
  • 128+ engineersFive offices, three continents

What we build on .NET

Modern .NET, the cross-platform successor to .NET Framework, runs on Windows, Linux and containers. We build ASP.NET Core Web APIs, internal line-of-business systems, customer portals, background processing with worker services, and desktop tools in WPF or WinForms where users still need them. Blazor lets teams build interactive web interfaces in C# when sharing code between server and client matters more than a JavaScript-first approach.

Integration is a frequent driver. Organizations that run Active Directory or Entra ID, SQL Server, SharePoint, Dynamics 365 or Power Platform often find .NET the lowest-friction way to extend them. Identity, single sign-on and role models carry over with little glue code. We also build services that call Azure OpenAI or other model APIs, keeping prompts, retrieval and audit logging in typed, testable C#.

Architecture and modernization decisions

We structure larger systems with clean or vertical-slice architecture, mediator-style request handling where it helps, Entity Framework Core for most data access and Dapper where raw speed or complex SQL matter. Minimal APIs suit small services, controllers suit large surfaces. Messaging through Azure Service Bus, RabbitMQ or MassTransit supports reliable asynchronous flows, and health checks plus OpenTelemetry give operations a clear view of the running system.

Many clients arrive with .NET Framework 4.x applications. Options are lift-and-shift to a virtual machine, an incremental move using the .NET Upgrade Assistant with strangler-style routing, or a rewrite. We favor incremental moves because they keep revenue systems live. Blockers are usually WCF, Web Forms, System.Web dependencies and third-party libraries without modern builds; we inventory those before promising a timeline.

When .NET fits your project

Choose .NET when your organization is already in the Microsoft ecosystem, when you want strong typing with productive tooling in Visual Studio or Rider, or when you need predictable performance and long-term-support releases. It performs well under load, and C# has evolved with records, pattern matching and async features that keep code compact. Azure integration is first class, although AWS and Google Cloud are fully workable targets.

It is a weaker match for teams with no C# experience building a quick prototype, for products that depend heavily on Python machine-learning libraries, or where licensing and tooling choices push you elsewhere. Even then, a .NET core with Python services alongside is common. AI-assisted coding speeds up tests, mapping code and upgrade work, always under review from senior engineers who understand the domain.

What we do

What our .NET Development Services team delivers

Specific work we do for clients, with the senior people who do it.

  • ASP.NET Core API development

    Versioned Web APIs with authentication, validation, OpenAPI documentation and integration tests, ready for containers and cloud hosting with documentation your own engineers can extend later.

  • Enterprise line-of-business apps

    Role-driven systems for approvals, reporting and operations, built on SQL Server or PostgreSQL with auditing and clear permission models.

  • Blazor web applications

    Interactive web front ends written in C#, suited to internal tools and teams that want one language across client and server.

  • Framework migration

    Staged moves from .NET Framework 4.x to current .NET, with dependency inventory, compatibility shims and parallel running during cutover.

  • Azure-native services

    Functions, Service Bus, App Service and Container Apps designs with managed identity, monitoring and infrastructure defined as code.

  • Microsoft ecosystem integration

    Extensions and connectors for Dynamics 365, SharePoint, Power Platform and Entra ID, keeping identity and data consistent across tools.

Why Speqto

A team you can rely on from the first call

The habits that keep projects calm: clear scope, visible progress and engineers who stay accountable.

  • Building since 2017

    Nine years of shipping web, mobile, AI and blockchain products for startups and enterprises.

  • 128+ engineers

    A bench of senior engineers, designers and QA, so one person leaving never stalls your product.

  • Offices on three continents

    Noida HQ with teams in Surat, London, the US and Ho Chi Minh City for overlapping working hours.

  • AI-first workflow

    AI-assisted coding, testing and reviews speed delivery, with a named human accountable for every merge.

  • Weekly demos

    You see working software every week and can redirect early, long before a release surprise.

  • You own everything

    Full IP assignment, repository access from day one and an NDA before we talk details.

How we deliver

A proven process from idea to scale

Transparent, agile delivery with weekly demos and clear milestones, so you always know what is shipping and why.

  1. 01

    Discover

    Workshops to understand goals, users, data and success metrics.

  2. 02

    Plan

    Architecture, roadmap, estimate and a team shaped to your needs.

  3. 03

    Design

    UX flows, prototypes and technical design validated with stakeholders.

  4. 04

    Build

    Agile sprints with weekly demos, code reviews and automated testing.

  5. 05

    Launch

    Secure deployment, monitoring and a smooth go-live.

  6. 06

    Scale

    Ongoing optimization, new features and support as you grow.

Technology

Tools and platforms for .NET Development

The stack our engineers use on this kind of work every week.

  • NE.NET 8
  • ASASP.NET Core
  • CC#
  • ENEntity Framework Core
  • DADapper
  • BLBlazor
  • MAMassTransit
  • AZAzure Service Bus
  • SQL Server
  • XUxUnit
  • AZAzure DevOps
  • Docker
Outcomes

What you can expect

Every engagement is tied to measurable business results, not just deliverables.

01

Supported, modern runtime

Migration off .NET Framework moves systems onto maintained releases and opens up containers, Linux hosting and current tooling.

02

Smooth fit with Microsoft tools

Identity, data and workflows connect to the systems your staff already use, with less custom glue.

03

Dependable performance

Typed code, profiling and load testing give predictable behavior as usage grows across the life of the product, not just launch day.

Engagement models

Work with us the way that suits you

Start small, change the shape later. Every model includes weekly demos and full IP ownership.

Dedicated Development Team

Long-term products & roadmaps

A full, cross-functional squad (engineers, QA, designer, PM) working only on your product, managed with your processes and tools.

  • Scale up or down with 30 days notice
  • Overlap with your working hours and daily stand-ups
  • Direct access to every team member
Learn more

Staff Augmentation

Filling skill gaps fast

Pre-vetted senior engineers who join your in-house team within days to add capacity or specialist expertise.

  • Profiles shared within 48 hours
  • Flexible monthly contracts
  • Replacement guarantee
Learn more

Fixed-Scope Projects

MVPs & well-defined builds

A clear scope, timeline and price, delivered in milestones with demos at every stage.

  • Detailed estimate after discovery
  • Milestone-based billing
  • Warranty period after launch
Learn more

Managed Services

Ongoing support & operations

We run and continuously improve your applications, cloud and infrastructure under defined SLAs.

  • 24/7 monitoring options
  • Monthly reporting and reviews
  • Predictable monthly pricing
Learn more
Selected work

Products we have built

Real products shipped by our teams across fintech, Web3, AI and consumer apps.

Easy Upload product screenshot SaaS Web Application

Easy Upload

Easyupload.io offers a free file upload and transfer service without limits. Upload files and share them without time, download or…

  • React
  • Node.js
  • Express
  • MongoDB
2 Months · 6 Members Gameree product screenshot NFT

Gameree

Gameree is a decentralized marketplace for buying, selling and trading non-fungible tokens (NFTs) with a gaming focus.

  • React
  • Three.js
  • Node.js
  • Express
4 Months · 10 Members Global Forex Funding product screenshot Web Development

Global Forex Funding

Prop Funders is a forex prop trading firm providing a simulated environment for traders to refine skills and earn up…

  • React
  • Node.js
  • Express
  • Web3
2 Months · 5 Members

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Industries

Sectors we know well

Domain context shortens discovery and avoids costly rework.

FAQ

.NET Development Services FAQs

Straight answers on cost, timelines, IP ownership, team setup and how we work. Cannot find yours? Ask a solutions architect directly.

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What is the difference between .NET and .NET Framework?

Modern .NET is the cross-platform, actively developed successor that runs on Windows, Linux and containers. .NET Framework 4.x is Windows-only and receives only maintenance. New projects should use modern .NET, and existing Framework applications benefit from a planned migration.

How hard is it to migrate from .NET Framework?

It depends on dependencies. Class libraries often move easily, while WCF, Web Forms and System.Web code needs replacement or adaptation. We run an inventory with the .NET Upgrade Assistant first, then migrate in slices so the application stays live.

Can .NET applications run outside Azure?

Yes. Modern .NET runs on AWS, Google Cloud, on-premises Linux servers and Kubernetes. Azure offers the tightest integration, but nothing in the platform locks you in, and we design with portable containers where that matters.

When would you recommend Java over .NET?

When your organization already runs on the JVM, depends on Java-only middleware, or hires mostly Java engineers. Both are mature and fast. The decision usually comes down to existing skills, ecosystem and integrations rather than capability.

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Client reviews

Rated 5.0/5 by clients on Clutch

Independent, verified reviews from founders and technology leaders we have worked with. Read them in full on each platform.

Clutch 5.0 12 reviews Google 4.4 43 reviews Techreviewer 4.9 20 reviews DesignRush 4.5 2 reviews Upwork 4.9 124 reviews GoodFirms 5.0 1 review Glassdoor 4.1 49 employee reviews

“What I found most impressive about Speqto Technologies was their profound technical depth.”

Andrea Daminelli Founder & Co-CEO, Daze Milan, Italy · Blockchain development for an EV charging company
Verified review on Clutch

“The project management throughout this complex undertaking was exceptionally proactive and structured.”

Rostyslav Burylo CEO, Lynksen Lisbon, Portugal · Blockchain development
Verified review on Clutch

“Their ability to translate complex cryptographic concepts into actionable, business-aligned strategies set them apart.”

Oleksandr Sendulskyi Senior Marketing Manager, BINTIME IT Company Ukraine · Blockchain development services
Verified review on Clutch

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