Software Engineer, Modernization

Xapply; Northern (KY); Hybrid; USD 110,000 - 160,000; Full time

Job summary

Xapply is seeking a Software Engineer, Modernization in the United States. The role focuses on reducing technical debt and transforming legacy applications into scalable, cloud-native systems.

You will modernize .NET and C# apps, decompose monoliths, and build clean microservices and APIs designed for long-term maintainability. The job blends hands-on coding with cloud re-platforming across AWS and containerized environments.

Qualifications

• Experience modernizing legacy .NET/C# applications into cloud-native solutions.
• Strong knowledge of microservices, APIs, and scalable architectures.
• Ability to decompose monoliths and implement reusable modernization patterns.

Responsibilities

• Transform legacy applications into scalable cloud-native systems.
• Decompose monoliths and build microservices and APIs.
• Re-platform workloads on AWS and containerized environments.
• Collaborate with Architecture, Product, QA and Security teams.

Skills

C#

.NET

Cloud-native design

Microservices

API design

Tools

AWS

Docker

Kubernetes

Job description

Description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Software Engineer, Modernization based in the United States.

This is a full-time, remote-eligible engineering role focused on reducing technical debt and transforming legacy applications into scalable, cloud-native systems. You will modernize .NET and C# applications, decompose monoliths, and build clean microservices and APIs designed for long-term maintainability. The role combines hands‑on software engineering with cloud re-platforming across AWS, containerized environments, and modern infrastructure. You will also use AI‑assisted development tools to analyze large codebases, accelerate refactoring, generate documentation, and improve test coverage. Working closely with Engineering, Architecture, Product, QA, Security, and Infrastructure teams, you will help establish reusable modernization patterns and engineering standards. The position offers an opportunity to influence how systems are designed, delivered, and evolved at scale.

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