Senior Software Developer – Application Migration & Modernization

This is a fully remote position, open to applicants in Brazil.

📋 Description

• Evaluate current .NET Framework applications, including their dependencies, integration points, and data access methodologies, and develop modernization strategies that include sequencing and risk assessments.

• Adjust application code to accommodate PostgreSQL as the backend, in addition to migrating the underlying data.

• Deconstruct and transition legacy ADO.NET and older Entity Framework data access layers to contemporary patterns.

• Shift Oracle database workloads to PostgreSQL, which involves schema transformation, translating PL/SQL to PL/pgSQL, addressing data type and collation mismatches, rewriting queries, and validating performance targets.

• Create characterization tests, data-tier integration tests, and automated comparisons between legacy and new outputs.

• Collaborate with client architects, DBAs, and product owners; articulate trade-offs and document decisions made.

• Contribute to CI/CD pipelines, deployment automation, and system observability.

• Mentor mid-level developers and evaluate code for maintainability.

⛳️ Requirements

• Over 10 years of professional experience in software development, with extensive expertise in C# and .NET.

• Strong, up-to-date knowledge of .NET Framework 4.8 and its legacy stack — including ASP.NET MVC/Web API, Web Forms, WCF, IIS, and Windows Services.

• Proven experience in modernizing or migrating existing applications, rather than focusing solely on greenfield development.

• Strong relational database expertise: writing and optimizing SQL, interpreting execution plans, and understanding transaction and isolation behaviors.

• Practical experience with Oracle technologies — including PL/SQL, packages, procedures, triggers, and sequences — sufficient to comprehend and analyze business logic embedded within the database.

• Familiarity with source control, branching strategies, and CI/CD processes in a collaborative environment (Git, Azure DevOps, GitHub Actions, or similar).

• Strong communication skills to interact effectively with non-engineers and perform well in situations with incomplete requirements.

• Advanced English proficiency (C1/C2), as reflected in the application responses.

• Open to candidates from Latin America; remote work available in Brazil.

🏝️ Benefits

• Fully remote position.

• Full-time hourly commitment.

• Initial engagement of 2 months with the potential for extension.