Overview

Consider joining the MX Holdings family as an ERP Application Developer in one of our company locations- St. Louis, MO, Leetonia, OH, or Wellsville, PA. The ERP Application Developer is a hands-on Microsoft Dynamics 365 Finance & Supply Chain Developer that supports our manufacturing division, Pennex. 

 

This role will be responsible for developing, maintaining, troubleshooting, and deploying D365 extensions using X++, while working closely with business users, IT, and leadership to understand operational needs and deliver practical, reliable solutions. 

 

A successful candidate will have proven, hands-on experience with D365 and X++ development, including extension-based development, build/deployment processes, and production support.

Responsibilities

Essential Duties and Responsibilities:

 

• Develops, maintains, troubleshoots, and supports customizations and extensions in Microsoft D365 using X++.
• Designs and implements D365 extensions using Microsoft-supported patterns, including extension-based development, event handlers, Chain of Command, forms, tables, classes, data entities, security, and integrations.
• Supports the full SDLC, including requirements gathering, technical design, development, unit testing, code review, documentation, deployment, production support, and continuous improvement.
• Manages and supports D365 build, release, deployment, and environment management activities in coordination with IT and business stakeholders.
• Worsk closely with business users to understand manufacturing, finance, supply chain, inventory, purchasing, production, and related business processes.
• Translates functional requirements into technical solutions that are stable, supportable, and aligned with D365 best practices.
• Troubleshoost production issues, identify root causes, and implement durable fixes.
• Maintains existing D365 customizations and extensions written by internal or external developers.
• Assists with integrations between D365 and other enterprise systems, including APIs, data entities, batch jobs, file-based integrations, and reporting/data platforms.
• Creates and maintains technical documentation, deployment notes, support documentation, and knowledge transfer materials.
• Participates in planning, prioritization, estimation, and communication for D365-related development work.
• Uses modern development practices, including source control, branching, code review, testing, DevOps pipelines, and release management.
• Leverages AI tools responsibly in the current role to improve productivity, documentation, analysis, troubleshooting, and software development quality.
• Assists the Business Analysts and Application Architects in updating relevant documentation to reflect the software applications as deployed to production.
• Performs other duties as assigned.

 

Qualifications

Ideal Candidate Will Have:

 

Education

• Bachelor's degree (B. A.) from four-year college or university in Engineering, Computer Science, or similar field preferred; or equivalent combination of education and experiences below.

 

Experience

 

Required

 

Preferred

Hands-on experience with X++ development in D365

Experience with D365 in a manufacturing environment

Experience with D365 build, deployment, environment management, and release processes.

Current use of AI tools in a professional software development or technical delivery role.

Experience using source control and modern development practices.

Experience using Visual Studio

Experience with reporting or analytics related to D365, including Power BI, Electronic Reporting, SSRS, BYOD, Data Lake, Fabric, or similar platforms.

Experience with MVC or MVP design pattern for web applications

 

 

Required Skills, Knowledge, and Abilities

 

General

• Ability to identify pain points for end users or operations; solves problems that resolves issues with the system
• Acts with the utmost integrity; acts as a trusted partner to IT and operations teams
• Promotes teamwork and works collaboratively with the broader IT and operations teams
• Provides a good experience when interacting with internal or external stakeholders, end users, or team members; ensures that communication and interactions are helpful and professional
• Driven and self-motivated to solve problems and improve MS D365 to meet the business needs
• Communicates effectively using verbal and written communication
• Plans and organizes work; understands how to prioritize workload/projects
• Adapts to different communication styles and circumstances. Understands change management
• Ability to apply common sense understanding to carry out instructions furnished in written, oral, or diagram form
• Ability to deal with problems involving several concrete variables in standardized situations
• Ability to follow moderately complex business logic in developing solutions
• Must be eligible to work in the United States, visa sponsorships are not available 
• Regular attendance is required
• Candidates must meet pre-employment screening requirements, including background checks and drug screenings

Technical

 

Required

 

Preferred

Intermediate or better X++ skills

Experience with CodeX or Claude Code

Ability to manage each stage of D365 code change deployment.

Experience using Visual Studio

MSFT Power Platform skills

Ability to properly utilize source code control tools

Advanced T-SQL skills

Intermediate or better C# skills

Experience with reporting or analytics related to D36, including Power BI, Electronic Reporting, SSRS, BYOD, Data Lake, Fabric, or similar platforms.

Intermediate or better Javascript skills

Basic T-SQL skills

Familiarity with WCF (Windows Communication Foundation)

 

Facility with Microsoft Outlook, Excel

 

About Us

Perks of the Job

• Medical, dental and vision insurance
• Disability and life insurance
• 401(k) with matching contribution
• Generous allotment of paid vacation and paid holidays
• Enterprise-wide winter break between Christmas and New Year’s holidays
• Competitive wages plus performance-based bonus opportunities
• Ongoing training and professional development
• Ample opportunity for career growth and advancement
• Paid time off for all new parents

Why Our People Love Working Here

• Purpose-driven, friendly, open, and respectful culture
• Highly engaged workforce – as indicated by best-in-class engagement scores
• Hybrid work schedule consisting of 3 in-office days and 2 remote days per week 
• Shared core values of safety, integrity, caring and growth
• Leaders committed to building more diverse, inclusive teams
• On-Demand pay via DailyPay
• Robust recognition and reward program
• Community Impact opportunities including additional time off to volunteer and charitable match up to $250 per employee
• Tuition reimbursement
• Complimentary refreshment bar with beverages and snacks
• Employee discount program with hundreds of partner brands
• Wellness incentive program
• Regular employee celebrations and events

Posted Min Pay RateUSD $100,000.00/Yr. Posted Max Pay RateUSD $120,000.00/Yr.