Job Title: AI Application Engineer
Johnson Controls International (JCI) is seeking AI Application Modernization Engineer to join our Digital Transformation team. This role is ideal for an experienced software engineer with deep expertise in legacy application modernization, AI-assisted software development, and Microsoft cloud technologies.
As AI Application Modernization Engineer, you will lead the transformation of mission-critical business applications built on VB6 front-end technologies and IBM i (AS400) platforms, including Synon, RPG, RPGLE, and CLP. You will leverage AI and Generative AI technologies to accelerate code conversion, application modernization, testing, documentation, and deployment to modern Microsoft platforms.
You will play a critical role in reducing technical debt, improving application maintainability, and accelerating JCI's digital transformation strategy through scalable, cloud-ready solutions.
How you will do it
AI-Powered Application Modernization
Hands on application development to modernization of legacy applications built using VB6, Synon, RPG, RPGLE, CLP, and IBM i (AS400) technologies.
Utilize Generative AI, GitHub Copilot, Azure OpenAI, and AI-assisted development tools to accelerate code analysis, conversion, testing, and documentation.
Design and execute migration strategies from legacy platforms to modern Microsoft technologies.
Develop reusable modernization frameworks, patterns, and best practices for enterprise-scale application transformation.
Microsoft Development & Cloud Engineering
Design and develop modern business applications using Microsoft technologies including C#, .NET 8+, ASP.NET Core, and .NET MAUI.
Modernize desktop applications into cloud-enabled and cross-platform solutions within the Microsoft ecosystem.
Design API-first architectures and service-based integrations using Azure services.
Collaborate with enterprise architects, infrastructure teams, and business stakeholders to deliver secure and scalable solutions.
AI Strategy & Engineering Excellence
Identify opportunities to apply AI and Generative AI to improve software engineering productivity and modernization outcomes.
Lead proof-of-concepts and pilots demonstrating AI-driven modernization capabilities.
Establish engineering standards, governance, and best practices for AI-assisted application development.
Mentor development teams on modernization approaches, AI tools, and Microsoft development platforms.
Qualifications & Experience
Bachelor’s degree in computer science, Software Engineering, Information Technology, or related discipline.
5+ years of software development experience.
5+ years of experience with VB6 application development and maintenance.
Proven experience modernizing legacy applications to Microsoft technologies.
Experience delivering large-scale application modernization or migration programs.
Hands-on experience using AI-assisted software development tools and Generative AI technologies.
Experience working with enterprise business-critical applications and complex integrations.
Technical Expertise
Front-End Technologies - Visual Basic 6 (VB6), C#, .NET Framework, .NET 8+, ASP.NET Core, .NET MAUI, WinUI, WPF, XAML, HTML5, JavaScript
Back-End Technologies
Synon (CA 2E), RPG, RPGLE, CLP, IBM i / AS400, DB2, SQL Server, Stored Procedures, API Development
AI & Modernization Technologies
Azure OpenAI, GitHub Copilot Enterprise, Microsoft Copilot, Azure AI Services, AI-assisted code conversion tools, Prompt Engineering, Retrieval-Augmented Generation (RAG)
Cloud & DevOps
Microsoft Azure, Azure DevOps, GitHub, Azure App Services, Azure Functions, Azure API Management, Power Platform, CI/CD Pipelines
Preferred Qualifications
Experience converting VB6 applications to .NET MAUI, WinUI, or modern Microsoft technologies.
Experience modernizing Synon, RPG, RPGLE, or AS400 applications.
Experience with Azure-based application modernization programs.
Knowledge of enterprise architecture, application rationalization, and technical debt reduction strategies.
Experience within manufacturing, industrial, or enterprise ERP environments.
Microsoft Azure certifications preferred.
Ideal Candidate: An engineer who has successfully delivered VB6 and AS400 modernization programs and has leveraged AI technologies to accelerate application conversion to modern Microsoft platforms such as .NET, MAUI, Azure, and Power Platform.
Skills Required
- Bachelor's degree in computer science, software engineering, information technology, or a related discipline
- 5+ years of software development experience
- 5+ years of VB6 application development and maintenance experience
- Proven experience modernizing legacy applications to Microsoft technologies
- Experience delivering large-scale application modernization or migration programs
- Hands-on experience using AI-assisted software development tools and Generative AI technologies
- Experience working with enterprise business-critical applications and complex integrations
- Experience converting VB6 applications to .NET MAUI, WinUI, or modern Microsoft technologies
- Experience modernizing Synon, RPG, RPGLE, or AS400 applications
- Experience with Azure-based application modernization programs
- Knowledge of enterprise architecture, application rationalization, and technical debt reduction strategies
- Experience within manufacturing, industrial, or enterprise ERP environments
- Microsoft Azure certifications
Johnson Controls Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Johnson Controls and has not been reviewed or approved by Johnson Controls.
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Retirement Support — Retirement support is positioned as a meaningful part of the package through employer 401(k) matching, repeatedly framed as a strong pillar of the overall rewards mix. The matching contribution is described with specific match levels in multiple places, reinforcing perceived value for long-term saving.
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Leave & Time Off Breadth — Time off is presented as comparatively robust, with multiple paid holiday categories, vacation time, and sick time described as generous or “amazing” in places. Paid time off breadth appears to be a consistent contributor to total rewards attractiveness beyond base pay.
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Flexible Benefits — Benefits are described as broad and customizable, spanning standard medical/dental/vision plus optional add-ons like pet insurance, identity protection, and legal support. Tuition reimbursement is repeatedly highlighted as a high-value option supporting professional development.
Johnson Controls Insights
What We Do
At Johnson Controls, we transform the environments where people live, work, learn and play. From optimizing building performance to improving safety and enhancing comfort, we drive the outcomes that matter most. Dedicated to protecting the environment, we deliver our promise in industries such as healthcare, education, data centers and manufacturing. With a global team of 100,000 experts in more than 150 countries and over 130 years of innovation, we are the power behind our customers’ mission. Our leading portfolio of building technology and solutions includes some of the most trusted names in the industry, such as Tyco®, York®, Metasys®, Ruskin®, Titus®, Frick®, Penn®, Sabroe®, Simplex®, Ansul® and Grinnell®.
