Senior Integration Developer (IBM ACE / IIB) - Banking

The Opportunity

We are looking for an experienced Senior IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB) Developer to join a highly skilled engineering team responsible for delivering and supporting enterprise integration and messaging solutions within a complex financial services environment.

This is an excellent opportunity to work on business-critical systems, designing, developing and maintaining high-performance integration services that support large-scale transaction processing.

You'll be involved throughout the full software development lifecycle, working closely with analysts, developers and business stakeholders to deliver robust, scalable and high-quality solutions.

Responsibilities

• As a Senior IBM ACE / IIB Developer, you will:
• Design and develop integration solutions using IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB).
• Produce detailed technical designs and program specifications from high-level functional requirements.
• Develop, test and deploy high-quality integration services and message flows.
• Configure and develop solutions using IBM MQ.
• Produce deployment documentation and automated deployment scripts.
• Create and execute unit and subsystem test plans.
• Support application integration and production deployments.
• Participate in code reviews, design reviews and technical discussions.
• Perform proof-of-concepts to validate solution designs and meet performance and throughput requirements.
• Troubleshoot production issues and provide ongoing application support.
• Work collaboratively within Agile delivery teams to deliver solutions on time and to a high standard.

Essential Skills & Experience

• Strong commercial experience with IBM App Connect Enterprise (ACE v12) or IBM Integration Bus (IIB v10+).
• Experience developing and supporting IBM MQ / WebSphere MQ solutions.
• Strong SQL and PL/SQL skills with Oracle databases.
• Experience working with Oracle database design.
• Good knowledge of Linux (RHEL) environments.
• Experience with XML and JSON message formats.
• Strong understanding of enterprise integration and messaging architecture.
• Experience across the full Software Development Lifecycle (SDLC).
• Ability to produce high-quality technical documentation and solution designs.
• Strong analytical and problem-solving skills.

Desirable Skills

• Experience with any of the following would be advantageous:
• SWIFT ISO 15022 and/or ISO 20022 messaging standards.
• Financial services, banking, payments or capital markets.
• C#.NET
• Java
• C++
• Linux Shell Scripting
• REST APIs
• Performance tuning and optimisation of integration solutions.

What We're Looking For

• We're looking for someone who is:
• A collaborative team player with excellent communication skills.
• Self-motivated and able to work independently.
• Passionate about delivering high-quality software.
• Comfortable working within a fast-paced Agile environment.
• Meticulous, organised and detail-oriented.
• Able to manage multiple priorities while maintaining high technical standards.
• Keen to learn new technologies and broaden their technical expertise.

Working Arrangements

Location: London

Hybrid: 8 days onsite per month, remainder remote.

Engagement: Umbrella company only.

If you're an experienced IBM ACE / IIB professional looking to work on complex enterprise integration platforms within a collaborative and technically challenging environment, we'd be delighted to hear from you.