Senior Integration Developer (IBM ACE / IIB) - Banking

London, UK (Hybrid)

Working Pattern: 8 days onsite per month, remainder remote

Engagement: Umbrella company only

RATE: £500 - £600

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.

As a Senior IBM ACE / IIB Developer, you will:

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  Design and develop integration solutions using IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB).

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  Produce detailed technical designs and program specifications from high-level functional requirements.

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  Develop, test and deploy high-quality integration services and message flows.

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  Configure and develop solutions using IBM MQ.

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  Produce deployment documentation and automated deployment scripts.

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  Create and execute unit and subsystem test plans.

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  Support application integration and production deployments.

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  Participate in code reviews, design reviews and technical discussions.

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  Perform proof-of-concepts to validate solution designs and meet performance and throughput requirements.

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  Troubleshoot production issues and provide ongoing application support.

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  Work collaboratively within Agile delivery teams to deliver solutions on time and to a high standard.

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  Strong commercial experience with IBM App Connect Enterprise (ACE v12) or IBM Integration Bus (IIB v10+).

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  Experience developing and supporting IBM MQ / WebSphere MQ solutions.

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  Strong SQL and PL/SQL skills with Oracle databases.

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  Experience working with Oracle database design.

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  Good knowledge of Linux (RHEL) environments.

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  Experience with XML and JSON message formats.

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  Strong understanding of enterprise integration and messaging architecture.

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  Experience across the full Software Development Lifecycle (SDLC).

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  Ability to produce high-quality technical documentation and solution designs.

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  Strong analytical and problem-solving skills.

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Experience with any of the following would be advantageous:

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  SWIFT ISO 15022 and/or ISO 20022 messaging standards.

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  Financial services, banking, payments or capital markets.

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  C#

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  .NET

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  Java

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  C++

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  Linux Shell Scripting

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  REST APIs

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  Performance tuning and optimisation of integration solutions.

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We're looking for someone who is:

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  A collaborative team player with excellent communication skills.

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  Self-motivated and able to work independently.

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  Passionate about delivering high-quality software.

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  Comfortable working within a fast-paced Agile environment.

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  Meticulous, organised and detail-oriented.

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  Able to manage multiple priorities while maintaining high technical standards.

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  Keen to learn new technologies and broaden their technical expertise.

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  Location: London

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  Hybrid: 8 days onsite per month, remainder remote.

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  Engagement: Umbrella company only.

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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.

*Rates depend on experience and client requirements