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Job description template

.NET Developer Job Description Template (2026)

A free, copy-ready .NET Developer job description covering responsibilities, must-have skills, tools, seniority variants, and KPIs. Written for hiring managers, not for SEO filler.

Hire a pre-vetted .net developer

Key facts

Role
.NET Developer
Reports to
Reports to the Engineering Manager or Backend Lead
Must-have skills
7 items
Seniority tiers
Junior / Mid / Senior
KPIs defined
6 metrics
Starting price (offshore)
$2800/month

Role summary

A .NET Developer owns the server-side systems built on the Microsoft stack: designing and maintaining C# and ASP.NET Core services, modeling data access with Entity Framework Core against SQL Server, deploying to Azure, and extending the line-of-business and back-office applications the company runs on — while keeping the code async-correct, tested, and observable in production.

Responsibilities

Must-have skills

  • • 4+ years shipping production C# on ASP.NET Core, including dependency injection, middleware, and the hosting model.
  • • Deep Entity Framework Core experience — able to read generated SQL, fix N+1 problems, and choose tracking vs no-tracking correctly.
  • • Strong SQL Server skills: writing queries, reading execution plans, indexing, and diagnosing deadlocks.
  • • Solid async/await understanding, including where blocking calls and thread-pool starvation come from.
  • • Hands-on Azure deployment experience (App Service, Container Apps, or AKS) with Key Vault and Application Insights.
  • • Comfortable writing xUnit or NUnit tests with a mocking library and at least some integration test experience.
  • • Strong written English for async code review, pull request descriptions, and spec docs.

Nice-to-have skills

  • • Experience migrating a production .NET Framework app to modern .NET (Core or .NET 8).
  • • Blazor Server or WPF experience for building internal line-of-business tools.
  • • Dapper or micro-ORM experience for high-throughput read paths.
  • • Message-driven architecture with Azure Service Bus, MassTransit, or RabbitMQ.
  • • AWS .NET deployment (ECS, Lambda) for teams not on Azure.
  • • gRPC or SignalR for real-time and service-to-service communication.

Tools and technology

Reporting structure

Reports to the Engineering Manager or Backend Lead. Collaborates daily with frontend engineers (API contracts), DBAs or data engineers (schema and query review), DevOps (Azure pipelines), and the product manager for the feature area.

Seniority variants

How responsibilities shift across junior, mid, and senior levels.

junior

1-2 years

  • • Implement scoped API endpoints and service methods under review from a senior.
  • • Write unit tests for every method and endpoint merged.
  • • Fix bugs surfaced by QA and Application Insights, and learn the domain model.
  • • Learn the codebase conventions: DI setup, folder structure, EF patterns, and PR etiquette.

mid

3-5 years

  • • Own end-to-end delivery of a feature area from data model to deployed API.
  • • Make data-access decisions — EF vs Dapper, tracking strategy, indexing — for new features.
  • • Review pull requests from junior engineers and enforce the async and query-cost bar.
  • • Co-design API contracts with frontend engineers before implementation.

senior

6+ years

  • • Set backend architecture: service boundaries, data-access patterns, caching, and Azure deployment strategy.
  • • Drive the migration roadmap (.NET Framework to .NET 8, or monolith to services) and delegate the work.
  • • Mentor mid-level engineers and run the backend hiring loop.
  • • Own observability, performance budgets, and incident response for the services the team ships.

Success metrics (KPIs)

Full JD (copy-ready)

Paste this into your ATS or careers page. Edit the company name and any bracketed placeholders.

# .NET Developer — Job Description

## Role summary
A .NET Developer owns the server-side systems built on the Microsoft stack: designing and maintaining C# and ASP.NET Core services, modeling data access with Entity Framework Core against SQL Server, deploying to Azure, and extending the line-of-business and back-office applications the company runs on — while keeping the code async-correct, tested, and observable in production.

## Responsibilities
- Build and maintain REST and minimal-API endpoints in ASP.NET Core with model binding, FluentValidation, and API versioning.
- Design the data layer in Entity Framework Core — migrations, relationships, value conversions — and drop to Dapper or raw SQL where EF is the wrong tool.
- Diagnose and fix production performance problems, most of which are database round-trips: N+1 queries, missing indexes, and untracked cartesian explosions.
- Deploy services to Azure App Service, Container Apps, or AKS with health checks, deployment slots, and Application Insights telemetry.
- Wire configuration and secrets through Azure Key Vault and App Configuration, never committing connection strings to source control.
- Write async code that does not block thread-pool threads, and understand when ConfigureAwait and cancellation tokens matter.
- Build CI/CD pipelines in Azure DevOps or GitHub Actions with automated unit and integration tests and staged rollouts.
- Write xUnit or NUnit unit tests with Moq, plus integration tests against a real database using Testcontainers or WebApplicationFactory.
- Maintain and extend legacy .NET Framework line-of-business apps and plan and execute their migration to modern .NET.
- Integrate with identity providers, message brokers (Azure Service Bus, RabbitMQ), and internal SQL Server reporting stacks.
- Review pull requests with specific feedback on async correctness, EF query cost, exception handling, and data modeling.

## Must-have skills
- 4+ years shipping production C# on ASP.NET Core, including dependency injection, middleware, and the hosting model.
- Deep Entity Framework Core experience — able to read generated SQL, fix N+1 problems, and choose tracking vs no-tracking correctly.
- Strong SQL Server skills: writing queries, reading execution plans, indexing, and diagnosing deadlocks.
- Solid async/await understanding, including where blocking calls and thread-pool starvation come from.
- Hands-on Azure deployment experience (App Service, Container Apps, or AKS) with Key Vault and Application Insights.
- Comfortable writing xUnit or NUnit tests with a mocking library and at least some integration test experience.
- Strong written English for async code review, pull request descriptions, and spec docs.

## Nice-to-have skills
- Experience migrating a production .NET Framework app to modern .NET (Core or .NET 8).
- Blazor Server or WPF experience for building internal line-of-business tools.
- Dapper or micro-ORM experience for high-throughput read paths.
- Message-driven architecture with Azure Service Bus, MassTransit, or RabbitMQ.
- AWS .NET deployment (ECS, Lambda) for teams not on Azure.
- gRPC or SignalR for real-time and service-to-service communication.

## Tools and technology
- C# / .NET 8
- ASP.NET Core
- Entity Framework Core
- SQL Server
- Azure (App Service / Container Apps)
- Azure DevOps / GitHub Actions
- xUnit & Moq
- Docker
- Dapper
- Application Insights

## Reporting structure
Reports to the Engineering Manager or Backend Lead. Collaborates daily with frontend engineers (API contracts), DBAs or data engineers (schema and query review), DevOps (Azure pipelines), and the product manager for the feature area.

## Success metrics (KPIs)
- Weekly PR throughput and review turnaround on own and peer PRs.
- API latency and error rate tracked in Application Insights, with a budget that flags regressions.
- Database query cost: no new N+1 or unindexed hot-path queries shipped to production.
- Test coverage on behavioral and integration paths maintained or improved each sprint.
- Deployment reliability: failed deployments and rollbacks trending down quarter-over-quarter.
- Production incident count and mean time to resolution on owned services trending flat or down.

Frequently asked questions

What does a .NET Developer do day-to-day?

A .NET Developer owns the server-side systems built on the Microsoft stack: designing and maintaining C# and ASP.NET Core services, modeling data access with Entity Framework Core against SQL Server, deploying to Azure, and extending the line-of-business and back-office applications the company runs on — while keeping the code async-correct, tested, and observable in production.

How many years of experience should a mid-level .NET Developer have?

A mid-level .NET Developer typically has 3-5 years of experience. At that level they should own end-to-end delivery of a feature area from data model to deployed api.

Which KPIs should I hold a .NET Developer accountable to?

The most important KPIs for a .NET Developer are: Weekly PR throughput and review turnaround on own and peer PRs.; API latency and error rate tracked in Application Insights, with a budget that flags regressions.; Database query cost: no new N+1 or unindexed hot-path queries shipped to production.; Test coverage on behavioral and integration paths maintained or improved each sprint..

Do your developers work with .NET Framework or only modern .NET?

Both. Modern .NET (Core through .NET 8) is where new work happens, and every developer in our network is current on it. But most US companies still run production .NET Framework 4.x line-of-business apps, and we match developers who have maintained those systems and, in many cases, led the migration to .NET 8. Tell us in the kickoff call whether you need someone to keep a Framework app healthy, run a migration, or build greenfield on modern .NET, and we shortlist accordingly.

How strong is your developers Entity Framework and SQL knowledge?

EF Core and SQL are screened on the take-home. Anyone can call ToList; the ones we send you know when EF has generated a bad query and how to fix it — reading the query log, splitting a cartesian explosion, choosing AsNoTracking for read paths, and dropping to raw SQL or Dapper when the ORM is the wrong tool. If your app is SQL Server heavy with stored procedures and complex reporting queries, we match a developer who has lived in that world rather than one who has only ever used EF as a black box.

Related

Written by Syed Ali

Founder, Remoteria

Syed Ali founded Remoteria after a decade building distributed teams across 4 continents. He helps US businesses source, vet, onboard, and scale pre-vetted offshore talent in engineering, design, marketing, and operations.

  • • 10+ years building distributed remote teams
  • • Direct hiring experience across US, UK, EU, and APAC markets
  • • Specialist in offshore vetting and cross-timezone team integration
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Last updated: April 12, 2026