WebMethods Developer

WebMethods Developer

Posted Today by Haystack

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£650 Per day
Inside
Remote
London, England, United Kingdom
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API Gateway API Management Application Programming Interface (API) AS2 Axway Azure Kubernetes Service Cloud Computing Cloud Technology Continuous Integration and Continuous Delivery DevOps Docker (Software) Electronic Data Interchange Embedding Enterprise Integration Extensible Markup Language (XML) File Servers JSON Kubernetes Management Microservices Performance Tuning Security Clearance Software as a Service (SaaS) Software Development WebMethods

Summary: The WebMethods Developer role involves building and optimizing enterprise integrations using Software AG WebMethods within a fast-paced integration team. The position requires hands-on experience in managing B2B/EDI flows and driving CI/CD deployments in cloud environments. The developer will also be responsible for performance tuning and API management while collaborating with product and platform teams. This is a 6-month contract role that operates inside IR35 and is fully remote.

Key Responsibilities:

  • Develop, extend and maintain enterprise integration solutions using Software AG WebMethods components.
  • Design and implement integration architectures aligned to SOA, API management and microservices patterns.
  • Manage B2B/EDI protocols and integrations, transforming and validating XML, JSON, REST and SOAP payloads.
  • Lead performance tuning, capacity planning and high-availability design; troubleshoot production incidents.
  • Collaborate with product and platform teams, providing technical leadership and embedding DevOps practices.

Key Skills:

  • 5+ years hands-on WebMethods development and architecture experience.
  • Deep knowledge of Integration Server and API Gateway.
  • Practical experience with Software AG Universal Messaging, Trading Networks and MWS.
  • Proven B2B/EDI experience with AS2, VAN, and secure file transfer management.
  • Strong API and integration skills: XML/XSD, JSON, REST, SOAP, OAuth/JWT.
  • Experience deploying integrations to cloud platforms (AWS/Azure) using CI/CD tools.
  • Must hold or be eligible for UK SC security clearance.

Salary (Rate): £650 daily

City: London

Country: United Kingdom

Working Arrangements: remote

IR35 Status: inside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

WebMethods Developer | £600 - £650

We're working with a leading enterprise SaaS platform on this exciting opportunity. Join a fast-moving integration team delivering mission-critical connectivity — you’ll be building and optimising enterprise integrations using Software AG WebMethods (Integration Server, API Gateway, Universal Messaging, Trading Networks), handling B2B/EDI flows (AS2), and driving CI/CD deployments into cloud environments (AWS/Azure, Docker, Kubernetes). This is a hands-on contract for a pragmatic engineer who loves performance tuning, API management and solving tricky B2B edge cases.

The Role

  • Develop, extend and maintain enterprise integration solutions using Software AG WebMethods components: Integration Server, API Gateway, Universal Messaging, Trading Networks, MWS and Optimize.
  • Design and implement integration architectures aligned to SOA, API management and microservices patterns; create secure, scalable APIs and proxies.
  • Manage B2B/EDI protocols and integrations — EDI, AS2, FTP/SFTP, HTTPS — and transform/validate XML, JSON, REST and SOAP payloads.
  • Lead performance tuning, capacity planning and high-availability design; troubleshoot production incidents and optimise throughput.
  • Collaborate with product and platform teams, provide technical leadership, and embed DevOps practices with CI/CD pipelines (Jenkins/GitLab CI, Docker, Kubernetes) into cloud deployments.

What You'll Need

  • 5+ years hands-on WebMethods development and architecture experience — deep knowledge of Integration Server and API Gateway required.
  • Practical experience with Software AG Universal Messaging, Trading Networks and MWS; familiarity with Monitor/Optimize a strong plus.
  • Proven B2B/EDI experience — AS2, VAN, EDI mapping/translation, and managing secure file transfer (SFTP/FTP).
  • Strong API and integration skills: XML/XSD, JSON, REST, SOAP, OAuth/JWT, and experience with Axway API Gateway is advantageous.
  • Experience deploying integrations to cloud platforms (AWS/Azure), using CI/CD tools (Jenkins/GitLab), containers (Docker) and orchestration (Kubernetes).
  • Must hold or be eligible for UK SC security clearance; able to operate inside IR35 on umbrella contracts.

What's On Offer

  • 6-month contract with competitive day rate: £600 - £650 (inside IR35) — umbrella only.
  • Fully remote role with opportunities to shape architecture and influence platform-level decisions.
  • Work on high-impact integration projects across the enterprise — visibility, autonomy and technical ownership.
  • Collaborate with an experienced engineering team using modern DevOps tooling and cloud platforms (AWS/Azure, Docker, Kubernetes).

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