Full Stack Engineer

Ifit Solutions; États-Unis; À distance; USD 96 000 - 165 000; Temps partiel

Résumé du poste

Ifit Solutions is seeking a senior software engineer to design, develop, and maintain backend services and RESTful APIs using C#, .NET, and ASP.NET Core. You will design API contracts with OpenAPI/Swagger, implement secure internal and external integrations, and apply Clean Architecture, SOLID, DDD, CQRS, and MediatR patterns.

Responsibilities include authentication with OAuth 2.0 and OpenID Connect, JWT, and Microsoft Entra ID, data access with EF Core and SQL Server, and frontend work with

Qualifications

• 5+ years of professional software development experience, delivering enterprise applications.
• 5+ years of backend development using C# and .NET, including ASP.NET Core and RESTful APIs.
• 3+ years of frontend development, preferably Angular and TypeScript.
• Experience designing RESTful APIs and enterprise integrations.
• Strong knowledge of Clean Architecture, SOLID, DDD, CQRS, and distributed systems.
• Experience with EF Core, SQL Server, and Azure SQL.
• Knowledge of OAuth 2.0, OpenID Connect, JWT, and Microsoft Entra ID.
• 3+ years of experience with Azure and cloud-native app development.
• Experience with automated testing (xUnit/NUnit/Moq/Jasmine/Karma/Cypress).
• Familiarity with Git, CI/CD and GitHub Actions or Azure DevOps.
• Familiarity with Docker, Terraform, IaC, and DevSecOps practices.
• Experience troubleshooting complex backend, integration, and production issues.

Responsabilités

• Take ownership of features from design through production deployment and support.
• Design backend components, integrations, and API contracts.
• Translate business requirements into technical solutions.
• Collaborate with technical leads and architects to ensure quality.
• Develop and maintain cloud-native solutions on Azure, including App Service, Functions, Azure SQL, and API Management.
• Contribute to CI/CD pipelines, monitoring, and production troubleshooting.
• Review code and provide technical guidance to other developers.
• Ensure security, scalability, performance, and maintainability.

Outils

C#

.NET

ASP.NET Core

REST APIs

OpenAPI/Swagger

OAuth 2.0

OpenID Connect

JWT

Azure

Azure DevOps

Docker

Terraform

Entity Framework Core

SQL Server

Angular

TypeScript

CI/CD

GitHub Actions

Datadog

OpenAI Codex

Description du poste

• Design, develop, and maintain backend services and RESTful APIs using C#, .NET
• 10, and ASP.NET Core.
• Design API contracts using OpenAPI/Swagger and implement secure internal and
• external integrations.
• Apply Clean Architecture, SOLID, DDD, CQRS, MediatR, and modern software
• design patterns.
• Implement authentication and authorization using OAuth 2.0, OpenID Connect,
• JWT, and Microsoft Entra ID.
• Develop data-access components using Entity Framework Core, SQL Server, and
• Develop and maintain frontend functionality using Angular, TypeScript, RxJS, and
• Design and support cloud-native solutions using Microsoft Azure, including App
• Service, Functions, Azure SQL, Service Bus, Key Vault, and API Management.
• Write automated unit and integration tests and actively participate in code reviews.
• Contribute to CI/CD pipelines, DevSecOps, deployments, monitoring, and
• production troubleshooting.
• Take ownership of features from initial technical design through production
• deployment and support.

Required Experience

• 5+ years of professional software development experience, with strong experience delivering enterprise applications.
• 5+ years of hands-on backend development experience using C# and .NET, including ASP.NET Core and RESTful APIs.
• 3+ years of experience with modern frontend development, preferably Angular and TypeScript.
• Strong experience designing and implementing RESTful APIs and enterprise integrations.
• Strong understanding of Clean Architecture, SOLID, DDD, CQRS, and distributed application concepts.
• Experience with Entity Framework Core, SQL Server, and Azure SQL.
• Strong understanding of OAuth 2.0, OpenID Connect, JWT, and Microsoft Entra ID.
• 3+ years of experience with Microsoft Azure and cloud-native application development.
• Experience with automated testing using tools such as xUnit, NUnit, Moq, Jasmine, Karma, or Cypress.
• Experience with Git, GitHub, CI/CD, and GitHub Actions and/or Azure DevOps.
• Familiarity with Docker, Terraform, Infrastructure as Code, and DevSecOps practices.
• Experience troubleshooting complex application, integration, and production issues.

Seniority Expectations

• The candidate should be able to work autonomously and:
• Translate business requirements into sound technical solutions.
• Design backend components, integrations, and API contracts.
• Evaluate technical alternatives and architectural trade-oƯs.
• Identify security, scalability, performance, and maintainability concerns.
• Review code and provide technical guidance to other developers.
• Troubleshoot issues across backend, frontend, database, integration, and cloud
• layers.
• Collaborate eƯectively with Technical Leads and Architects.
• Take end-to-end ownership of features and technical deliverables.

Preferred Qualifications

• Experience with Azure API Management, Azure Service Bus, and event-driven
• Experience with Terraform, Docker, and containerized development.
• Familiarity with Module Federation / Micro Frontend architectures.
• Experience with monitoring platforms such as Datadog.
• Familiarity with AI-assisted development tools such as OpenAI Codex, GitHub
• Copilot, or similar tools.
• Experience working in Agile product teams.

Advanced English

Remote project

Contractor, 6 months with extension, EST Time Zone