30+
professionals
100+
success projects
1 week
trial offer
Clutch rating
Scaling a .NET product requires more than adding extra hands.
TwinCore provides experienced .NET Core engineers who work as part of a structured delivery model, supported by our internal processes and technical leadership. Our developers integrate smoothly into existing teams or take responsibility for specific modules, ensuring continuity and predictable progress. We handle onboarding, team stability, and quality control, so development stays focused and sustainable as your product grows. You hire an engineer. TwinCore stays accountable for delivery.

Meet our in-house .NET developers available for your project

  • Igor P
    10+ projects
    Igor P
    Lead .NET developer
    Availability
    full time, part time, hourly
    Experience
    10+ years
    .NET
    Net.Core
    Nopcommerce
    Kentico
    Azure
    Blazor
    + other
    Experienced yet open-minded .NET developer who meticulously writes every string of code. If you need fast, creative, but working solutions, there’s no better candidate than Igor!
    View and Hire
  • Igor G
    10+ projects
    Igor G
    System Architect
    Availability
    full time, part time, hourly
    Experience
    10+ years
    .NET
    Net.Core
    Nopcommerce
    Kentico
    Azure
    React
    Angular
    Blazor
    + other
    As a self-motivated team player committed to continuous professional growth and learning new technologies, this candidate confident in his ability to contribute effectively to your organization. He forward to the opportunity to bring his skills and experience to your team.
    View and Hire
  • Alex S
    10 projects
    Alex S
    Full stack .NET developer
    Availability
    full time, part time, hourly
    Experience
    8+ years
    .NET
    Net.Core
    Nopcommerce
    Azure
    MS SQL
    + other
    Meet Alex, a seasoned .NET developer who crafts each line of code with precision and an open mind. If you're seeking swift, innovative, and effective solutions, Alex is the ideal candidate for your team.
    View and Hire
  • Slavik
    10 projects
    Slavik
    Full stack .NET developer
    Availability
    full time, part time, hourly
    Experience
    8+ years
    .NET
    Net.Core
    Nopcommerce
    ASP.NET
    Azure
    + other
    Experienced yet open-minded .NET developer who meticulously writes every string of code. Embrace the opportunity to enhance your team's expertise by hiring him today.
    View and Hire
  • Pavel
    10 projects
    Pavel
    Full stack .NET developer
    Availability
    full time, part time, hourly
    Experience
    6+ years
    .NET
    Net.Core
    Angular
    React
    Blazor
    Azure
    + other
    With a proven track record in .NET development and proficiency in modern front-end frameworks, this candidate is well-equipped to contribute to your team's success. Don't miss the opportunity to bring such talent on board—consider hiring him today.
    View and Hire
  • Bogdan
    8 projects
    Bogdan
    Full stack .NET developer
    Availability
    full time, part time, hourly
    Experience
    8+ years
    .NET
    Net.Core
    Angular
    React
    VueJS
    Azure
    + other
    This candidate is well-prepared to enhance your team's capabilities. He is ready to drive your projects forward. Seize the opportunity to bring this skilled professional on board today.
    View and Hire
  • Alex St
    8 projects
    Alex St
    Full stack developer
    Availability
    full time, part time, hourly
    Experience
    5+ years
    .NET
    Net.Core
    Nopcommerce
    Kentico
    Azure
    React
    + other
    This candidate is well-prepared to drive your projects forward. Seize the chance to add this skilled professional to your team by extending an offer today.
    View and Hire
  • Maksym
    8 projects
    Maksym
    Full stack developer
    Availability
    full time, part time, hourly
    Experience
    4+ years
    ASP.NET
    Nopcommerce
    React
    Blazor
    Azure
    + other
    With the skills and mindset to move your projects ahead, this candidate is prepared to make an immediate impact. Now is the perfect time to add him to your team.
    View and Hire
  • Kolya
    5 projects
    Kolya
    Full stack developer
    Availability
    full time, part time, hourly
    Experience
    3+ years
    .NET
    Net.Core
    React
    VueJS
    Azure
    + other
    This professional is fully equipped to strengthen your team’s potential. Ready to lead your projects toward success, he’s the talent you don’t want to miss.
    View and Hire
Previous
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    Why companies choose TwinCore for .NET development

    Choosing the right .NET partner is about reducing delivery risk, not speeding up recruitment. TwinCore provides experienced .NET engineers who are part of our in-house delivery team and have delivered production systems, supported long-term platforms, and handled complex integrations. Our focus is on clarity, consistency, and predictable outcomes, allowing teams to scale without adding operational overhead or management complexity.

    Fast and predictable onboarding

    We match projects with suitable .NET engineers within 48 hours. Instead of large CV lists, you review relevant profiles aligned with your technical context, then move directly to onboarding.

    Cost-efficient without cutting corners

    TwinCore helps optimize development costs compared to local hiring, while maintaining senior-level expertise. You invest in active development and delivery, not long recruitment cycles or unused capacity.

    Risk-free trial period

    Start with a trial period to validate technical fit, communication, and workflow alignment. If adjustments are needed, they are handled smoothly to maintain delivery continuity.

    Transparent pricing model

    Pricing and contracts are clear from the start. Engagement terms are straightforward, expectations are aligned early, and there are no hidden conditions affecting collaboration later.

    Time-zone aligned collaboration

    Our .NET engineers work with overlapping business hours to support real-time collaboration. This enables faster feedback, smoother communication, and closer integration with in-house teams.

    Clear reporting and visibility

    You stay informed through regular updates and clear progress tracking. Work, outcomes, and next steps remain visible without the need for constant supervision.

    Simple contracts, no legal gymnastics

    Agreements are designed to be practical and easy to navigate. There is no unnecessary complexity, long-term lock-in, or hidden legal friction.

    Access to a vetted .NET talent team

    TwinCore works with a curated group of .NET engineers covering backend, cloud, and enterprise scenarios. Every engineer has passed internal technical and delivery review before joining client projects.

    Flexible replacement if needed

    If project needs change or the fit isn’t right, adjustments are handled without disrupting delivery. Team continuity and progress remain a priority.

    Our Cases

    To demonstrate how TwinCore helps businesses scale and stabilize their engineering efforts, explore our real-world success stories in delivering high-impact software solutions.

    Case 1: Replacing a .NET Tech Lead

    Case 2: Scaling an AWS .NET Team

    Case 3: Stabilizing Development

    Replacing a .NET Tech Lead for a Swiss Fintech

    A Swiss fintech lost its .NET tech lead during active development. TwinCore quickly placed a senior .NET engineer who took over technical leadership and stabilized delivery.

    TwinCore compared with freelance marketplaces and internal hiring

    • Structured .NET engineering process

    TwinCore developers work within shared engineering standards, including code reviews, architecture oversight, CI/CD pipelines, and collaborative delivery practices. Freelance marketplace projects often depend on the habits and workflow of a single developer.

    • No single point of failure

    Freelancers operate independently. If availability changes or priorities shift, delivery can stall. TwinCore developers are supported by an engineering team that ensures continuity, backup expertise, and smooth replacement if required.

    • Access to broader .NET expertise 

    Modern .NET projects often involve ASP.NET Core, cloud infrastructure, APIs, integrations, and distributed systems. TwinCore developers can draw on internal expertise across architecture, Azure services, integrations, and performance optimization when projects become more complex.

    • Consistent delivery quality

    Freelance marketplaces rely heavily on self-reported experience and short-term engagements. TwinCore engineers operate within shared development standards and proven delivery practices designed for long-term product development.

    • Better fit for production systems 

    Many freelance developers focus on short-term tasks or isolated features. TwinCore developers are used to building and maintaining production-grade .NET systems that support business-critical operations.

    • Less hiring noise and marketplace risk

    Hiring through freelance platforms requires sourcing candidates, verifying skills, and managing delivery yourself. TwinCore removes that uncertainty by providing vetted .NET engineers who are already aligned with internal engineering standards and delivery expectations.

    What you get when you hire TwinCore’s in-house .NET Core developers

    You’re not hiring a standalone contractor. You’re adding a team-backed .NET developer to your delivery process, with TwinCore staying accountable for continuity, communication, and results. This reduces risk, keeps velocity predictable, and protects your roadmap when priorities change.
    Continuity when things don’t work out
    Most teams come to this model after the same experience: a developer looks good on paper, starts the work, and a few weeks later it’s clear the fit is wrong. Time is lost, money is spent, and the project stalls. With TwinCore, delivery does not stop if a change is needed. Replacement and continuity are handled by the team behind the developer, so progress never depends on a single individual.
    Clear engagement model before work starts
    Many projects slow down because expectations were never aligned. Who owns what, how decisions are made, and how delivery is measured often become clear only after problems appear. TwinCore defines the engagement model upfront, whether it’s staff augmentation, a dedicated developer, or a full team, so responsibilities, priorities, and workflow are clear from day one.
    Quality gate instead of trial-and-error
    Most hiring problems don’t come from lack of CVs, but from choosing the wrong developer too late. Teams often realise the mismatch only after weeks of onboarding and failed delivery. TwinCore assigns in-house .NET developers with proven production experience in the exact stack you run, so technical fit is validated before time and budget are wasted.
    Time-zone overlap without communication drag
    Remote work often fails not because of skills, but because communication breaks down. Delayed responses, unclear handovers, and mismatched working hours quietly erode velocity. TwinCore aligns developers with your time zone and delivery rhythm, integrating them into your tools, ceremonies, and standards so collaboration feels natural, not remote.

    Our .NET Projects

    Hire .NET  Core developers for your software projects

    TwinCore provides in-house .NET engineers for product teams that need predictable delivery and clear accountability. Choose a dedicated developer, a dedicated team, or project support depending on your scope and roadmap. Our engineers integrate into your workflow or take ownership of defined modules, with TwinCore ensuring continuity, quality control, and delivery stability throughout the engagement.

    Hire a Dedicated .NET Developer or Team

    For long-term initiatives and complex roadmaps, we assign a dedicated .NET developer or team from TwinCore’s in-house staff. You get consistent ownership, shared standards, and stable velocity across releases, migrations, and platform evolution.
    This model is best suited for:
    • Additional backend capacity
    • Short- to mid-term expertise
    • Support for existing .NET applications
    • Specific skills such as ASP.NET Core, C#, Azure, or Blazor
    Our dedicated teams operate as part of your delivery rhythm, with TwinCore maintaining continuity and quality control.

    Hire .NET Developers on a Flexible Basis

    When you need targeted capacity without spinning up a full team, we can allocate in-house .NET developers on a flexible engagement model. It’s ideal for closing delivery gaps, supporting existing codebases, or adding specific expertise while keeping coordination lightweight.
    This option works best when you need:
    • Additional backend capacity
    • Short- to mid-term expertise
    • Support for existing .NET applications
    • Specific skills such as ASP.NET Core, C#, Azure, or Blazor
    You get transparent engagement terms, clear reporting, and the ability to scale allocation as requirements change.

    .NET Project Support and Delivery

    When the priority is delivery, TwinCore can take ownership of a defined .NET scope and run it end to end. Our in-house team plans, builds, and ships while keeping you in control of business priorities and product direction. This reduces coordination overhead and gives you a single point of accountability for execution.
    This approach is suitable for:
    • Defined-scope .NET projects and releases
    • Refactoring, modernisation, or cloud migration
    • Integration-heavy systems and API platforms
    • Internal tools and business-critical workflows
    We handle execution, quality control, and coordination so progress stays visible and delivery stays on track.

    .NET technologies and architectures we work with

    TwinCore provides .NET developers who work across the full application lifecycle, covering backend systems, web interfaces, and supporting infrastructure. Our engineers are used to working in real production environments where frontend and backend decisions are closely connected. This approach reduces handoff friction and keeps delivery predictable as systems grow.

    ASP.NET Core & .NET Core Development

    TwinCore delivers ASP.NET Core and .NET Core development for companies that need reliable backend systems, APIs, and modern web platforms. Our in-house .NET developers build and maintain production services, handle ASP.NET MVC to ASP.NET Core migrations, and design architectures that scale across cloud and on-prem environments. This approach is used for long-term product development, system modernisation, and performance-critical workloads where stability matters as much as speed.

    Legacy .NET Framework Modernisation

    For established enterprise applications, TwinCore provides .NET Framework development and legacy system modernisation. Our .NET developers support existing Windows-based systems, refactor complex codebases, and reduce technical debt without forcing risky rewrites. This model is chosen by teams that need to keep business-critical .NET applications stable while planning controlled upgrades to modern .NET architectures.

    Modern .NET Web Applications

    TwinCore builds modern .NET web applications using Blazor and the latest .NET technologies when a unified stack makes sense for the product. Our .NET developers create maintainable front-end architectures that integrate tightly with backend services, APIs, and cloud infrastructure. This is commonly used for internal platforms, dashboards, and SaaS products that require long-term support rather than short-lived UI experiments.

    Cloud-Native .NET & Azure Architecture

    We deliver cloud-native .NET solutions on Azure for teams that need scalable, production-ready infrastructure from day one. TwinCore’s .NET developers design services with deployment, monitoring, and security in mind, supporting Azure-based platforms, APIs, and integrations. This approach fits products that need predictable cloud costs, high availability, and smooth growth without infrastructure becoming a bottleneck.

    Why companies hire .NET Core developers instead of full-time recruitment

    Teams usually hire .NET developers when delivery slows down, not because of a lack of ideas, but because systems become harder to move. This can happen at any stage of a product, when experience, capacity, or ownership is needed at the right moment.

    When releases slow down and deadlines start slipping

    Projects rarely stop because of missing ideas. They stop when releases slow down, teams get overloaded, and deadlines start slipping. Companies hire .NET developers to restore delivery speed, remove bottlenecks, and keep shipping without burning out the core team or rewriting plans every quarter.

    When the team lacks the right .NET expertise at the wrong moment

    Some problems can’t wait for months of hiring or internal training. Teams hire .NET developers when they need immediate experience with complex codebases, modernisation work, or platform-level decisions. This avoids costly trial and error and keeps technical decisions aligned with long-term product goals.

    When hiring takes too long and the project can’t wait

    Traditional recruitment cycles often move slower than the business. While roles stay open, delivery stalls and internal engineers stretch thin. Companies hire .NET developers when progress is needed within weeks, not months, and when momentum matters more than perfect long-term staffing plans.

    When managing freelancers becomes a delivery risk

    Open freelance platforms introduce uncertainty: availability changes, context is lost, and responsibility is fragmented. Teams hire .NET developers through a delivery-oriented model when they need continuity, accountability, and predictable outcomes without turning coordination into a full-time management task.

    Where hired .NET Core developers add the most value

    Teams hire .NET developers from TwinCore to work inside real, production systems rather than isolated tasks. Our developers join existing environments, take responsibility for defined areas, and contribute across backend, frontend, and infrastructure where needed.

    Web and API-driven .NET systems

    Our .NET developers typically work on web platforms and API-based systems where stability, performance, and long-term maintainability are critical. This includes customer-facing applications, internal portals, and backend services that must evolve without breaking existing functionality.

    Enterprise .NET environments

    Many teams hire .NET developers to work within established enterprise systems that support core business operations. These environments often involve complex workflows, role-based access, security constraints, and tight integration with existing software where changes must be controlled and predictable.

    Legacy .NET systems under active use

    TwinCore developers frequently join projects built on older .NET technologies that are still business-critical. The work focuses on stabilising existing codebases, reducing technical debt, and making incremental improvements without forcing risky rewrites or disrupting production systems.

    Modern .NET applications

    Our developers work on modern .NET applications where backend services and frontend layers are closely connected. This includes systems using unified .NET stacks for dashboards, internal tools, and long-lived web applications that require consistency across the full application lifecycle.

    Cloud-hosted .NET platforms

    Teams often hire .NET developers to work on systems deployed in cloud environments, most commonly Azure. These platforms require attention to deployment, monitoring, scalability, and operational reliability, alongside ongoing feature development.

    Integration-heavy .NET systems

    TwinCore developers regularly work in environments where .NET applications must integrate with external services, internal tools, or third-party platforms. This context demands careful handling of data flow, error resilience, and long-term interoperability across systems.

    Core technologies our .NET developers work with

    A practical stack for shipping and maintaining production .NET systems across web, cloud, data, and integrations:
    Backend
    TwinCore builds backend systems on Microsoft .NET and ASP.NET Core, including ASP.NET MVC patterns and Web API for RESTful services. For real-time functionality and service-to-service communication, we also use SignalR and gRPC where the architecture benefits from it. Data access is typically handled via Entity Framework (EF Core) to keep models, migrations, and queries maintainable at scale.
    Frontend
    Frontend depends on product context, but the team supports modern UI development with Angular and React, and also Blazor when a unified .NET full-stack approach makes sense. For web fundamentals and UI delivery, the stack includes HTML/CSS plus practical styling frameworks like Bootstrap or Tailwind CSS.
    Database
    For production systems, the team works with relational databases such as Microsoft SQL Server, PostgreSQL, and MySQL, and also supports NoSQL options like MongoDB/DocumentDB. For performance and scale, Redis is used for caching and fast data access, and Azure Cosmos DB appears in the stack for cloud-native distributed workloads.
    Frameworks
    Beyond core application code, TwinCore’s .NET work commonly runs in cloud environments on Microsoft Azure and AWS. For messaging and event-driven architectures, the stack includes options like RabbitMQ, Kafka, Azure Service Bus, and Amazon SQS. Delivery automation is supported via CI/CD tooling such as Azure DevOps Pipelines and GitHub Actions, which helps keep releases predictable.

    How TwinCore’s .NET Core developers join your team

    Talk to us
    Share a brief overview of your project, current challenges, and what you expect from a .NET developer or team.
    Initial alignment
    You share your goals, technical context, and expectations. We align on scope, priorities, engagement model, and how the .NET developer or team will fit into your existing setup.
    Technical matching
    TwinCore assigns in-house .NET developers whose experience matches your system, stack, and delivery needs. The focus is on practical fit: working with your codebase, workflows, and real production constraints.
    Onboarding and integration
    Developers are onboarded into your repositories, environments, and communication channels. They join your delivery rhythm, follow agreed standards, and start contributing within the existing team structure.
    Ongoing delivery and continuity
    Development progresses with clear visibility and predictable output. TwinCore remains responsible for continuity, support, and adjustments if needs change, so delivery does not depend on a single individual.

    Hiring Models Available

    Time and material
    The time and material model is a flexible approach to outstaffing where you pay for the specific time and resources used on your project. This model aligns well with the Agile principles and is particularly suitable for projects with evolving requirements or uncertain scopes.
    Part-time
    You hire our professionals who will work a particular number of hours per week according to your current project needs. Please, remember that we offer part-time outstaffing for projects that require at least 80 working hours of our experts per month.
    Full-time
    Our tech experts will work on your project as full-time employees. However, we’re ready to offer our help for projects that need at least 160 working hours of our professionals per month.

    Hire .NET Core developers who can carry the system forward

    Building with .NET is rarely about writing code fast. It’s about making decisions that won’t block the product six months later. Architecture, ownership, and long-term maintainability matter from the first step. If you need .NET developers who can join your team and work inside real systems with responsibility, TwinCore is ready to help.
    Bring the right .NET expertise into your team
    Book a call

    What our clients say about us

    • TwinCore has elevated the client's customers to the next level of supply chain management. The team is highly cost-efficient from a project management standpoint, and internal stakeholders are particularly impressed with the service provider's team dynamic.

      Alex Lopatkin
      Alex Lopatkin
      Amous

    • TwinCore delivered a fully functional solution on time, meeting expectations. The highly organized team employed a DevOps approach, swiftly responded to needs and concerns, and led a productive, enjoyable workflow. Their receptiveness to client requests and feedback stood out.

      Bruno Maurer
      Bruno Maurer
      Managin Director, N-tree

    • Thanks to TwinCore’s work, the client has gained a user-friendly, stable, and scalable SaaS platform. The team manages the engagement well by being reliable and punctual; they deliver tasks on time. Their resources are also highly flexible, resulting in a truly seamless engagement with the client.

      Mischa Herbrand
      Mischa Herbrand
      Executive, CIN

    • TwinCore successfully audited the apps and converted them into modern web apps, meeting expectations. They completed the project on time and within the agreed budget. Communicating through virtual meetings, the team provided updates and responded to the client's concerns.

      JH
      Joe Holme
      IT Director, GDD Associates

    • TwinCore delivered a fully functional solution on time, meeting expectations. The highly organized team employed a DevOps approach, swiftly responded to needs and concerns, and led a productive, enjoyable workflow. Their receptiveness to client requests and feedback stood out.

      A
      Anonymous
      Managing Director, Marketing Company

    Related Topics

    Frequently Asked Questions

    Can I hire a dedicated .NET Core developer or a full team?

    Yes. You can hire a single dedicated .NET Core developer or a complete dedicated team, depending on your scope and delivery needs. Teams are formed from TwinCore’s in-house developers and work as a stable unit with shared standards, internal support, and clear responsibility for results.

    Do you support staff augmentation for existing teams?

    You can use TwinCore for staff augmentation when they need to extend their internal team with additional .NET Core developers. Our developers join your workflows, codebase, and delivery process, contributing as part of your team rather than working in isolation.

    Can developers work full-time or part-time?

    Both options are available. .NET developers can be engaged full-time for long-term work or part-time for specific tasks, support, or short-term needs. The engagement model is adjusted to match your workload and priorities.

    How is your model different from hiring a .NET developer on Upwork?

    Hiring on freelance platforms often means relying on a single individual with limited backup and no shared responsibility. TwinCore provides in-house .NET developers who are supported by a team. If challenges arise, knowledge and help are available internally, ensuring continuity and preventing delivery from stalling. Top-level engineers are never “cheap”, but a team-backed model reduces risk and improves long-term outcomes.

    Can a .NET Core developer join our existing team and codebase?

    Yes. TwinCore developers regularly join established teams and work inside existing .NET codebases, including complex and long-lived systems. They adapt to your architecture, standards, and processes rather than forcing a separate workflow.

    Can you help update or modernise an old .NET application?

    Yes. We work with legacy .NET Framework applications, including maintenance, refactoring, performance improvements, and controlled migration to modern .NET where appropriate. The goal is to improve stability and maintainability without disrupting production systems.

    Can we hire a developer or team just for a one-time .NET project?

    Yes. You can engage a .NET developer or our team for a defined project with a clear scope and timeline. This is common for migrations, integrations, feature delivery, or stabilisation work that does not require long-term hiring.

    How quickly can a .NET developer or team start?

    In most cases, work can begin within a few days after requirements and engagement details are confirmed. This is significantly faster than traditional in-house recruitment.

    What happens if the developer is not a good fit?

    This situation is rare, as developers are matched based on both technical requirements and team context. However, if expectations do not align, TwinCore arranges a replacement and compensates the time spent during the transition. Delivery responsibility remains with TwinCore, ensuring continuity and progress without putting the risk on a single individual.

    Who owns the source code and can development continue in-house later?

    Source code ownership, usage rights, and confidentiality terms are defined by the contract. When required, TwinCore is open to signing an NDA and aligning ownership terms to meet your legal or compliance needs. In standard engagements, all source code and deliverables produced during the collaboration belong to you. If development is later brought fully in-house, TwinCore supports a smooth transition through documentation, knowledge transfer, and structured handover, without vendor lock-in.

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