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Ket Software

Senior Software Engineer

Remote

United states

Senior

Freelance

02-10-2025

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Skills

Java C# CI/CD Docker Kubernetes Architecture Regression git C++ Microservice .NET .NET Core Spring Spring Boot CI/CD Pipelines

Job Specifications

Role: Lead Principal Software Engineer

Location: Remote

Role Purpose:

We are looking for a highly experienced Principal Software Engineer with mastery in C++ (modern standards), C#, and Java to lead large-scale code refactoring and modernization initiatives. This role is for someone who has spent years working in complex, performance-critical systems and can transform legacy, monolithic codebases into clean, modular, high-performance applications.

Core Responsibilities:

* Code Refactoring & Modernization

* Lead large-scale refactoring of legacy systems in C++, C#, and Java.

* Apply modern language features (C++17/20, C# 10+, Java 11/17) to improve performance, readability, and maintainability.

* Eliminate technical debt, dead code, and anti-patterns through structured refactoring.

* Redesign monolithic applications into modular, service-oriented architectures.

* Performance & Scalability

* Optimize memory usage, threading, and concurrency models.

* Profile and fine-tune JVM, CLR, and native C++ runtime performance.

* Apply low-level debugging and optimization techniques in high-performance environments.

* Architecture & Standards

* Implement SOLID, clean code, and design pattern practices.

* Introduce coding guidelines, automated static/dynamic analysis tools (SonarQube, Coverity, clang-tidy).

* Ensure all modernized code is testable, maintainable, and CI/CD-ready.

* Collaboration & Mentorship

* Partner with architects and technical leads to align modernization with long-term product strategy.

* Mentor developers in advanced refactoring strategies, performance tuning, and clean architecture.

* Conduct deep technical code reviews and enforce engineering best practices.

Required Technical Expertise

* 10+ years of professional development across C++, C#, and Java with extensive cross-language exposure.

* C++:

* Advanced mastery of C++11/14/17/20 features (smart pointers, lambdas, move semantics, constexpr).

* Strong knowledge of STL, Boost, multithreading, templates, and memory management.

* Hands-on with low-level debugging, profiling tools (Valgrind, Perf, VTune).

* C# / .NET:

* Deep expertise in .NET 6+, .NET Core, and legacy .NET frameworks.

* Strong understanding of CLR internals, async/await, threading, LINQ, and GC tuning.

* Experience refactoring monolithic .NET applications into modular or microservice-based systems.

* Java:

* Advanced knowledge of Java 8-17 features (streams, lambdas, records, modules).

* JVM tuning, garbage collection strategies, and threading/concurrency frameworks.

* Experience in Spring / Spring Boot modernization and service decomposition.

* Cross-Cutting Skills:

* Strong background in design patterns, refactoring techniques, and code smells elimination.

* Expert in unit testing, TDD, and regression-safe refactoring.

* Familiarity with CI/CD pipelines, Git workflows, containerization (Docker, Kubernetes).

* Hands-on with profiling & static analysis tools across all three languages.

About the Company

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