Senior Back-End Developer

Quality Digital

. Lead the modernization of a legacy Visual FoxPro system by rebuilding it in .NET with AI support .

Posted 11/9/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in modernizing legacy systems using .NET and AI tools, with strong capabilities in automated testing and database design. Proficient in leading development efforts and collaborating effectively with cross-functional teams.

Highest-signal resume keywords

C#.NETSQL ServerAutomated TestingAzure DevOps

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

C#.NETASP.NET CoreWeb APIEntity Framework CoreSQL ServerAutomated TestingGitLegacy System MigrationData Modeling

Soft Skills

Strong Communication SkillsAutonomyTraining Ability

Tools & Technologies

CursorGitHub CopilotClaude CodeXUnitNUnitAzure DevOpsBlazorReact

Industry Keywords

Legacy System ModernizationRetail DomainSupermarket DomainDBF Data

Tech Stack

Tools & technologies

ASP.NETAzureEntity FrameworkReactSQL.NET

About the role

Key responsibilities & impact

Lead the modernization of a legacy Visual FoxPro system by rebuilding it in .NET with AI support
Use the Traction pipeline and AI tools such as Cursor to reverse-engineer programs, screens, classes, reports, and DBF databases
Map business rules distributed across screens, reports, triggers, and procedures, including exceptions and undocumented behaviors
Create and maintain feature specifications, use cases, and Given/When/Then scenarios
Lead rule validation with the client’s developer
Implement features in the new .NET system, critically reviewing AI-generated code before opening pull requests
Prepare test plans and develop automated tests, including parity testing between the legacy and new systems
Design the new database and support the migration of legacy data
Account for integrations with the pricing system and the modernization of Gestcom in the architecture
Work with Quality’s Product Owner and a senior client-side developer
Train the client’s developer in the methodology and .NET codebase
Maintain traceability between work items, specifications, code, and tests in Azure DevOps

Requirements

What you’ll need

Strong experience with C# and .NET (ASP.NET Core, Web API, Entity Framework Core)
Experience with SQL Server, including data modeling, migrations, and query optimization
Ability to read and understand legacy procedural and data-oriented code
Practical experience using AI development tools such as Cursor, GitHub Copilot, or Claude Code, with the critical judgment needed to review and correct their output
Experience with automated testing using xUnit or NUnit, integration testing, and BDD (Reqnroll, SpecFlow, or similar)
Experience with Git and Azure DevOps (Boards, Repos, and Pipelines)
Autonomy to lead development as the project’s primary developer
Strong communication skills with the Product Owner, client, and technical team, including the ability to support the training of other developers
Experience with Visual FoxPro or other legacy languages is a plus
Experience with legacy system migration or modernization projects, particularly involving DBF data, is a plus
Knowledge of the retail or supermarket domain is a plus
Experience with web front-end development using Blazor or React is a plus
Experience writing functional specifications and use cases is a plus

Benefits

Comp & perks

An environment that supports learning and professional growth
Performance reviews and feedback focused on continuous development
Meal and/or food allowance
Medical and dental insurance
Pharmacy partnerships offering discounts on medications
Childcare assistance in accordance with the applicable policy
Partnership with SESC, offering a variety of cultural and leisure activities
Partnerships for language and technology studies, as well as access to a course platform
Payroll-deducted loans at attractive rates
Financial education program
Corporate University and learning paths
Referral program with opportunities for prizes and bonuses
Group life insurance