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Salary
$38k – $66k per year (gross)
Location
In office (Singapore)
Seniority
Middle · 4+ years exp
Employment
Full-Time

First seen by Alion on Oct 6, 2026.

Overview
Company
Impact
Profile match
Optimum Solutions is an IT services and outsourcing company headquartered in Singapore that provides software engineering, application development and maintenance, data and analytics, cloud and infrastructure, testing and global capability centre services. Founded in 1997, it reports more than 4,000 employees across offices and delivery centres in nine countries, including India and China, and supplies contract IT staff to banks and global technology clients. Its Singapore listings cover Java and .NET developers, DevOps and GenAI engineers, business analysts, scrum masters, UX designers, compliance associates and contract privacy support and AI video roles.

About the Role

We are seeking a skilled and analytical Software AG webMethods Developer to design, support, and enhance our enterprise E-Invoice integration platform. In this role, you will play a critical part in maintaining robust B2B document exchanges, ensuring compliance with electronic invoicing frameworks, and guaranteeing high availability for mission-critical financial transactions.

Responsibilities

  • Design, develop, and maintain robust e-invoice integration flows, mappings, and transformations using Software AG webMethods.
  • Handle secure file transfers (SFTP) and implement data security using PGP/GPG file processing.
  • Troubleshoot production issues, perform Root Cause Analysis (RCA), and resolve integration failures swiftly.
  • Monitor, manage, and support scheduled workflows via Control-M.
  • Translate business and statutory requirements into XML, UBL, and Peppol message structures.
  • Deploy releases across UAT and Production environments while collaborating with cross-functional technical teams.

Requirements

  • 4 to 8 years of hands-on software engineering experience specializing in middleware integration and enterprise application support.
  • Strong mastery of Software AG webMethods Integration Server and webMethods Designer
  • Proficient in developing and debugging Flow Services, mappings, transformations, and complex exception handling.
  • Deep familiarity with XML, XSD, and UBL data formats.
  • Hands-on experience with SFTP and PGP/GPG encryption protocols.
  • Strong SQL skills for relational database troubleshooting and data tracing.
  • Experience with Control-M job scheduling and monitoring.
  • Familiarity with Peppol e-invoicing standards, EN16931, or Singapore e-invoice (InvoiceNow) frameworks.
  • Excellent analytical mind for troubleshooting, strong documentation habits, and effective stakeholder communication.

Skills

Control M, XSD, Business Requirements Document, Design, Service Development, Fault Management, Analytical Mind, Data Formats, Technical Deployment, e-invoicing, WebMethods, Workflow Management, RCA, Invoice Handling, Schedule Control, SQL Development, WebMethods Integration Server, Data security platforms, SFTP

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