Location: Senior Integration Developer
Duration: Long Term Contract – C2C
Interview: Video
Project Overview
We are supporting a Procure-to-Pay (P2P) implementation of Zip for a client running Lawson (Infor) as their backend ERP. The client also operates a custom middleware platform built on IBM AS400 (IBM i).
We are seeking two technical integration developers (1 Onshore Lead + 1 Offshore Developer) to support integration development between Lawson and the AS400-based middleware across master and transactional P2P data objects.
The P2P vendor will manage integrations between Zip and the middleware. This role focuses specifically on Lawson ↔ Middleware integration design, development, and support.
Role Responsibilities
- Design and develop integrations between Lawson ERP and AS400 middleware
- Develop and support inbound/outbound interfaces for P2P master and transactional data
- Perform data mapping, transformation, and validation logic
- Support API-based and/or file-based (CSV, XML, JSON) integrations
- Implement error handling, logging, and reconciliation processes
- Collaborate with P2P vendor technical team for end-to-end data flow validation
- Participate in integration testing (SIT, UAT, Performance)
- Support deployment and production stabilization
- Document integration design and technical specifications
Data Objects in Scope
Master Data
- Vendor Master
- Item Master
- Chart of Accounts
- Accounting Units / Cost Centers
- Payment Terms
- Approvers / User Data
Transactional Data
- Requisitions
- Purchase Orders
- Receipts
- Invoices
- Credit Memos
- Payment Status Updates
Required Skills & Experience
Core Technical Skills
- Strong experience with Lawson (Infor S3 or CloudSuite) technical development
- Experience building integrations involving Lawson
- Hands-on experience with IBM AS400 / IBM i
- RPG, COBOL, or AS400-based development experience
- Experience integrating legacy middleware systems
- REST and/or SOAP API integration experience
- File-based integration experience (CSV, XML, flat files)
- Strong SQL and data transformation skills
- Understanding of Procure-to-Pay processes (AP, Purchasing, Vendor lifecycle)
Nice to Have
- Experience integrating P2P systems (Zip, Coupa, Ariba, etc.)
- Infor ION experience
- IBM MQ or messaging framework experience
- Experience working in blended onshore/offshore delivery models
- Exposure to SOX-controlled environments
Ideal Candidate Profile (Onshore Lead)
- 8+ years ERP integration experience
- Deep Lawson technical expertise
- Strong architecture and design skills
- Ability to interface directly with client technical leadership
- Experience leading offshore developers
Ideal Candidate Profile (Offshore Developer)
- 4–7 years integration development experience
- Strong AS400 / middleware development background
- Experience supporting ERP integrations
- Strong debugging and troubleshooting skills
