Lead .NET Full Stack Developer

Youngsoft, Inc. ( is a global software solutions IT company, delivering digital enterprise business betterment since 1996. Through collaborative engagement and discovery with our clients and vendors, we co-create industry specialized digital products, applications software, process, programs, and project outcomes. Headquartered in metro-Detroit, we leverage "pods" of Subject Matter Experts, Business Analysts, Solutions Architects, Software Engineers, and Project Managers, fused with HyperCare through our Global Support Centers. Through inclusivity, we share a singular vision to deliver world-class measurable upside results to our customers. It takes a village – come join ours!

Role Overview

A Lead .NET Full Stack Developer is needed to lead the modernization of a business-critical application stack and guide a small development team through a major platform upgrade.

This role will focus on modernizing legacy technologies and migrating core systems to modern platforms, including:

·        Modernizing .NET Framework 4.x applications to .NET 8

·        Migrating SQL Server 2008 to SQL Server 2022

·        Modernizing the front-end using React.js

This position requires both hands-on development and technical leadership, along with the ability to work closely with business stakeholders and technical teams to deliver modernization initiatives successfully.

Key Responsibilities

·        Lead the end-to-end modernization of legacy applications to modern platforms and architecture.

·        Define and execute the technical migration strategy, including phased releases, risk mitigation, and rollback planning.

·        Modernize backend services including APIs, authentication/authorization patterns, performance optimization, and security enhancements using .NET 8.

·        Lead SQL Server migration efforts, including schema updates, stored procedure refactoring, query tuning, indexing, and compatibility testing.

·        Ensure data integrity and performance stability throughout the SQL Server 2008 → 2022 upgrade.

·        Lead and contribute hands-on to React.js front-end modernization, including component development and API integrations.

·        Establish and enforce coding standards, code reviews, testing practices, and documentation.

·        Collaborate with product owners, business stakeholders, and SMEs to translate business requirements into technical solutions.

·        Mentor developers, remove technical blockers, and drive high-quality delivery.

Required Skills & Experience

·        8+ years of software development experience

·        Strong experience with C# and .NET Framework 4.x, including modernization to .NET Core / .NET 8

·        Experience with  MVC / Web API or similar API frameworks

·        Strong experience with SQL Server, including:

• T-SQL
• Stored procedures
• Query optimization
• Performance tuning
• Legacy database environments

·        Experience developing modern web applications using React.js

·        Proven experience leading application modernization or migration initiatives

·        Strong understanding of software architecture, clean coding practices, logging, security, and error handling

·        Experience with Git-based workflows and CI/CD processes

·        Excellent communication and leadership skills, with the ability to work with both technical teams and non-technical stakeholders

Preferred / Nice to Have

·        AWS experience (EC2, RDS, S3, IAM, CloudWatch)

·        Experience with containerization and modern deployment practices (Docker, CI/CD pipelines)

·        Experience with automated testing frameworks (unit and integration testing)

·        Familiarity with modernization approaches such as:

• Strangler pattern
• Incremental migration strategies
• API layer refactoring

Please respond with your updated resume, contact information