Job Requirements
We are seeking a motivated recent entry level developer for our Manhattan Active Warehouse Management (MAWM) Developer (Associate) role, joining our Product team at Four Seasons Family of Companies. This is an entry-level, structured-training role built around three developmental focus areas, working closely with and mentored by Technology & Innovation team.
THE BASICS:
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Schedule: Monday through Friday 8am to 5pm
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Location: Ephrata, PA
WHAT YOU DO:
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Learn to design, build, and maintain custom extensions and integrations within Manhattan Active WMS using the Manhattan ProActive low-code platform
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Learn to build and deploy AI agents within the Manhattan ecosystem — leveraging Manhattan Agent Foundry (a no-code/low-code tool) to automate supply chain processes, orchestrate workflows, and extend ProActive-built capabilities with intelligent automation
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Gain hands-on exposure to post go-live technical support — assisting with production issue triage, defect resolution, and system stability
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The ideal candidate brings strong foundational technical skills, curiosity about WMS extensibility and AI agent platforms, and the discipline to grow into these areas, with support from a team invested in developing early-career talent
Manhattan ProActive Extension Development:
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Assist in designing, building, and maintaining custom MAWM extensions using Manhattan ProActive — covering business logic, workflows, custom data attributes, and UI modifications
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Support the build-out of back-end service extensions via ProActive's service extension configurator, integrating with MAWM microservice APIs and external systems
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Assist with customizing mobile and desktop UIs using ProActive's visual UI designer — adding fields, modifying screens, and extending standard MAWM workflows
Participate in the full extension lifecycle: development, testing, packaging (extension packs), environment migration (STAGE- PROD), and performance monitoring
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Help maintain and enhance existing extensions, including defect remediation, spec alignment, and post go-live enhancements
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Leverage ProActive's AI-assisted code generation and automated documentation tools to accelerate development velocity and ensure documentation accuracy
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AI Agent Development — Manhattan Agent Foundry
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Learn to design and build AI agents using Manhattan Agent Foundry to automate supply chain commerce processes within the Manhattan Active ecosystem, with full training provided
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Assist in identifying automation opportunities across DC operations — including wave management, exception handling, dock scheduling, inventory reconciliation, and carrier compliance
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Support the integration of ProActive-built extensions into AI agents, helping agents read, manipulate, and act on MAWM data and processes
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Use Agent Foundry's composable, no-code/low-code interface to prototype and test agents alongside senior team members, iterating based on operational feedback
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Assist in defining agent scope, trigger conditions, decision logic, and escalation paths in collaboration with senior developers and business stakeholders
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Help monitor deployed AI agents in production — tracking performance and flagging exceptions as operational patterns evolve
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Stay current on Manhattan's expanding AI agent capabilities and build toward identifying opportunities to extend agent coveragntegration & API Developmente across FSP supply chain functions
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Assist in developing and maintaining REST API integrations between Manhattan Active WMS and external systems
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Utilize ProActive's API documentation and entity dictionary to identify and call the appropriate microservice endpoints across MAWM functions
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Support custom data attribute extensions — surfacing new fields through APIs, UIs, and business logic layers.
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Troubleshoot integration failures, API errors, and data mapping issues between MAWM and upstream/downstream systems
Post Go-Live Technical Support:
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Serve as a Tier 1/Tier 2 support resource for MAWM production issues — assisting with issue triage, root cause analysis, and resolution under guidance from senior team members
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Participate in hypercare support by shadowing senior team members during Severity 1/2 incidents, learning rapid-response practices and business impact communication
Documentation & Knowledge Management:
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Produce and maintain technical documentation for all ProActive extensions and AI agents — including design specs, API mappings, agent workflow diagrams, and test evidence
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Build and maintain runbooks for production support scenarios: wave processing failures, integration errors, agent exception handling, and extension rollback procedures
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Leverage Manhattan Developer Hub, ProActive U training, and Agent Foundry documentation to maintain current platform expertise
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Support internal knowledge transfer to reduce long-term vendor dependency on Manhattan for routine extension and support tasks
WHAT YOU BRING:
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0-1 years of professional experience; internships, co-ops, capstone projects, or coursework involving software development, APIs, or ERP/WMS systems are highly valued. Prior exposure to Manhattan Active WMS is a plus but not required
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Coursework, internship, or personal-project experience with low-code/no-code platforms, application development, or systems extensibility concepts is a plus
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Exposure to automation concepts, scripting, or agentic workflow tools through coursework or personal projects is a plus
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Coursework or internship exposure to incident management, defect tracking, or production-support concepts is a plus.
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Familiarity with ERP systems (e.g., JD Edwards) or supply chain/DC concepts, through coursework or exposure, is a plus
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Willingness and aptitude to learn Manhattan ProActive: service extension configurator, UI designer, extension pack management, API/entity dictionary, and AI-assisted development tools (full training provided)
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Basic understanding of cloud-native architecture concepts (e.g., Google Cloud Platform), through coursework or projects, is a plus
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Exposure to ERP integration concepts (JDE), through coursework or projects, is a plus
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Interest in warehouse management and supply chain execution processes
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Familiarity with Git, Postman, JSON, and XML (through coursework, bootcamps, or personal projects)
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Basic awareness of CI/CD pipelines and automated deployments is a plus
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Exposure to or curiosity about Manhattan Agent Foundry or equivalent AI agent development platforms — no prior experience required, training provided
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Foundational knowledge of REST APIs and web service integration concepts, gained through academic or personal projects
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Strong written and verbal communication — capable of producing technical documentation and clear business-facing updates
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Coachable and organized, with the ability to manage multiple priorities in a fast-paced environment.
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Strong team player with a growth mindset and genuine curiosity about enterprise systems, AI, and supply chain technology
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Bachelor's degree (completed or expected) in Computer Science, Information Systems, Supply Chain, or a related field
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Exposure to or interest in prompt engineering, agent orchestration patterns, or AI workflow design principles, through coursework or personal projects, is a plus
WHAT WE OFFER:
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Comprehensive medical, dental, and vision coverage
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Earned Wage Access – Flexible access to wages before payday
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Paid time off and holidays
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Flexible Spending Account for healthcare and dependent care
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401(K) retirement plans with employer match
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Company life insurance and voluntary life insurance
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Short-term and long-term disability coverage
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Tuition reimbursement
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Wellness programs
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Employee assistance program, Success Coach, and more!
WHO WE ARE:
We are a family of companies that focus on wholesale produce distribution and logistics across the Mid-Atlantic and Northeast Regions. We Partner with Local Growers to bring fresh organic and conventional produce to our Lancaster County, PA facility. We grade and package fruits and vegetables, sending only the best with our Drivers to deliver to independent retailers, natural food stores, and food co-ops.
We care about our associates and are committed to a healthy, diverse, and inclusive work environment. All employment decisions are made on a non-discriminatory basis, and without regard to sex, race, color, age, national origin, religion, disability, pregnancy or maternity, genetic information, ancestry, marital status, sexual orientation, gender identity, gender reassignment, citizenship status, military status, or any other similarly protected status under federal, state, and local laws.
Four Seasons Family of Companies participates in E-Verify. Four Seasons Family of Companies participa en E-Verify.
