Senior .NET Architect — Modernize Legacy Systems

Vytwo; Dallas (TX); On-site; USD 120,000 - 150,000; Part time

Job summary

Sonata Software is seeking a Senior software development engineer to design and build high‑performance distributed applications within a large‑scale logging and metrics ecosystem. You will modernize legacy systems, integrate with mainframe and batch workflows, and develop critical software that supports compliance, interoperability, and core business operations.

You will play a key role in architecture decisions, technical leadership, and guiding development best practices, while collaborating

Qualifications

• 8+ years of professional software development experience.

Responsibilities

• Architect, design, and develop a new unified platform by consolidating multiple legacy systems.
• Reverse-engineer and decompile legacy codebases where source code is unavailable.
• Collaborate with internal stakeholders to define requirements, workflows, and technical solutions.
• Lead technical design, solution architecture, and implementation of business initiatives.
• Provide technical oversight across applications, ensuring best practices and high code quality.
• Analyze complex application and business problems, evaluate processes, and recommend improvements.
• Participate in planning, procedure development, backlog management, and on-call support.

Skills

DotNet 8+

Blazor

MongoDB

Redis

RabbitMQ

REST APIs

CI/CD

Git/GitHub workflows

8+ years experience

Tools

Git

GitHub

Job description

Sonata Software is seeking a Senior software development engineer to design and build high‑performance distributed applications within a large‑scale logging and metrics ecosystem. You will modernize legacy systems, integrate with mainframe and batch workflows, and develop critical software that supports compliance, interoperability, and core business operations.

You will play a key role in architecture decisions, technical leadership, and guiding development best practices, while collaborating