Senior Applications Developer, ERP (Syteline Infor)

Requirements:

• At least seven years of experience in application development, ERP support, database development, systems analysis, or a related technical field.
• Production experience supporting and developing solutions for Infor SyteLine 9 or SyteLine 10.
• Advanced Microsoft SQL Server and SQL skills, including complex queries, joins, views, stored procedures, functions, transactions, and error handling.
• Experience diagnosing query performance issues, execution plans, blocking, deadlocks, and data integrity problems.
• Background in ERP integrations, customizations, reporting, background processing, and production support.
• Working knowledge of manufacturing and distribution operations and the ERP data that supports them.
• Experience with software development lifecycle, source control, testing, documentation, and change-management practices.
• Strong analytical, troubleshooting, communication, and organizational abilities, with the capacity to manage competing priorities, work independently, and collaborate across technical and business teams.
• Preferred: Experience with SyteLine IDOs, Mongoose forms, Application Event System, TaskMan, and SSRS.
• Preferred: Experience with EDI, APIs, middleware, ETL or ELT, and enterprise data integrations.
• Preferred: Familiarity with SQL monitoring and development tools such as Redgate SQL Monitor or SQL Toolbelt.
• Preferred: Knowledge of SQL Server administration, including indexing, security, backup and recovery, and database maintenance.
• Preferred: Experience in multi-site manufacturing environments and with SyteLine implementation partners.
• Preferred: Experience with Infor LN, ERP data migration, or hybrid cloud and on-premises application environments.
• Preferred: Familiarity with ITIL service-management practices and ticketing platforms such as Halo, ServiceNow, or Jira.

Responsibilities:

• Design, develop, test, document, and maintain SQL queries, views, stored procedures, functions, data scripts, and related application components for SyteLine and connected business applications.
• Turn approved business and functional requirements into secure, maintainable solutions, preserving traceability from requirements through design, testing, deployment, validation, and ongoing support.
• Diagnose SQL errors, inconsistent data, blocking, deadlocks, long-running processes, and performance problems; review execution plans and coordinate improvements with the database administrator.
• Create validation queries, transaction controls, error handling, logging, and rollback procedures, and participate in peer reviews while maintaining source-controlled technical documentation.
• Develop, maintain, and troubleshoot SyteLine 9 customizations, reports, interfaces, background tasks, forms, IDOs, application events, stored procedures, and supporting database objects while avoiding unsupported changes to core objects.
• Investigate application incidents across the user interface, business logic, integrations, TaskMan, and SQL Server; identify root causes, restore service, monitor recurring issues, and recommend improvements.
• Support ERP processes for manufacturing, planning, inventory, order management, shipping, purchasing, finance, and customer service; collaborate with internal teams and external implementation partners on enhancements, defects, upgrades, and new capabilities.
• Assist Data Engineering with source analysis, field mapping, extracts, transformations, reconciliation, data-quality investigations, integrations, reporting, analytics, and migration work.
• Partner with the database administrator on database design, indexing, security, performance tuning, deployment planning, maintenance, and recovery needs; coordinate resolution of cross-system issues.
• Support data conversion and validation for Holleys transition from SyteLine to Infor LN, maintaining the stability of the current ERP environment and preserving critical business logic.
• Work with business users to understand workflows, priorities, pain points, and desired outcomes; provide timely support, communicate during incidents, and explain technical findings clearly to users, support teams, and leadership.
• Prepare and maintain solution designs, support procedures, runbooks, troubleshooting guides, and knowledge articles, and train users and support personnel on features, process changes, and appropriate system use.
• Follow our standards for requirements, design, development, peer review, testing, user acceptance, deployment, validation, and rollback; develop and test changes in non-production environments before production implementation.
• Prepare complete change records with business justification, test evidence, implementation steps, validation criteria, risk assessment, and rollback instructions; participate in technical reviews with relevant teams.
• Take part in Incident, Problem, and Change Management practices and conduct root-cause analysis for recurring or high-impact issues.

Technologies:

• Cloud
• ETL
• ERP
• Infor LN
• Support
• ITIL
• JIRA
• mongoose
• Redgate
• SQL
• Security
• ServiceNow
• DevOps

More

At Holley, were building a modern, high-impact internal IT function and want technology to solve meaningful problems and improve real peoples experiences. This Application Developer, Core Applications (Infor) role supports our on-premises Infor SyteLine 9 ERP platform and Microsoft SQL Server database, serving teams across manufacturing, distribution, finance, customer service, and other business functions. Youll work with our Core Applications team, business stakeholders, Data Engineering, and the Database Administrator as we maintain the current ERP environment and transition from SyteLine to Infor LN. We move quickly, collaborate across boundaries, and value technology that works for people. We make vehicles faster, safer, louder, stronger, smarter, and more exciting. Were committed to an inclusive and diverse workforce and provide equal employment opportunity to qualified applicants.

last updated 43 week of 2026