Java Developer

3 days ago


London, Greater London, United Kingdom Expleo Group Full time

We are seeking a skilled Java Developer with experience in IBM Integration Bus (IIB) and messaging technologies. The ideal candidate will design, develop, and maintain integration solutions, ensuring seamless communication between systems and applications.

Responsibilities

  • Develop and maintain integration flows using IBM Integration Bus.
  • Implement message transformations and routing logic using ESQL.
  • Work with various data formats (XML, JSON, CSV) for integration.
  • Integrate systems using HTTP, SOAP, and REST protocols.
  • Configure and manage IBM MQ queues for message handling.
  • Package and deploy BAR files to integration nodes.
  • Troubleshoot integration issues using Trace Nodes, User Trace, and logs.
  • Build simple flows (e.g., HTTP → Transform → MQ or DB).
  • Monitor and restart integration nodes as needed.
  • Collaborate with cross-functional teams to ensure smooth integration.

Qualifications

  • Bachelor's degree in Computer Science or related field.

Essential Skills

  • Java Development: Strong core Java programming skills.
  • IBM Integration Bus (IIB):

  • Basic IIB concepts: message flows, nodes, integration servers.

  • ESQL fundamentals for transformations and routing.

  • Data Formats: XML, JSON, CSV.

  • Protocols: HTTP, SOAP, REST.
  • IBM MQ: Understanding of queues and message handling.
  • Deployment: Creating and deploying BAR files.
  • Troubleshooting: Using Trace Nodes, User Trace, and logs.

Experience

  • 2+ years of experience in Java development.
  • Hands-on experience with IBM Integration Bus and IBM MQ.
  • Familiarity with integration patterns and best practices.

Benefits

  • Collaborative working environment – we stand shoulder to shoulder with our clients and our peers through good times and challenges
  • We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects
  • Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses
  • Competitive company benefits
  • Always working as one team, our people are not afraid to think big and challenge the status quo
  • As a Disability Confident Committed Employer we have committed to:

  • Ensure our recruitment process is inclusive and accessible

  • Communicating and promoting vacancies
  • Offering an interview to disabled people who meet the minimum criteria for the job
  • Anticipating and providing reasonable adjustments as required
  • Supporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work at least one activity that will make a difference for disabled people

"We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age".

We treat everyone fairly and equitably across the organisation, including providing any additional support and adjustments needed for everyone to thrive


  • Java Developer

    4 days ago


    London, Greater London, United Kingdom Stott and May Full time

    Job DescriptionJob Title:Java DeveloperLocation:London (Hybrid – 3 days in office per week)Salary:Up to £80,000 per annumAbout The CompanyJoin a leading travel company renowned for delivering exceptional customer experiences and innovative digital solutions. As part of a forward-thinking technology team, you'll contribute to shaping the future of travel...

  • Java Developer

    2 weeks ago


    London, Greater London, United Kingdom GoContract Full time £65,000 per year

    About the jobJava Engineer (Sterling OMS / SIP)Location: Hybrid – London (2–3 days per week in Paddington)Contract: 6 months (Outside IR35)Rate: Up to £650 per dayOverviewA leading technology consultancy is seeking a Java Engineer with strong experience in IBM Sterling Order Management System (OMS) and Sterling Intelligent Promising (SIP). The role...

  • Java Developer

    5 days ago


    London, Greater London, United Kingdom Cognitive Group | Part of the Focus Cloud Group Full time £60,000 - £120,000 per year

    We need a hands-on Java and Full Stack Developer on a 6 month contract buiilding high-performance systems for a financial services end client on behalf of a prestigious Tier One Consultancy, who hold a longstanding relationship with the end customer.You will be responsible as their internal Java and wider development SME, for helping their end customer...

  • Java Developer

    2 days ago


    London, Greater London, United Kingdom _nology Full time

    Java Developer – 6–12 Month Contract (Potential to Extend)Start Date: January 2026Location: Fully remote with occasional workshops (every 6 weeks) in London, Manchester, Newcastle, or LeedsAbout the OpportunityWe're seeking skilled Java Developers to join a high-impact project starting in January 2026. This is an excellent opportunity to work in a...

  • Java Developer

    1 week ago


    London, Greater London, United Kingdom Movement Full time £60,000 - £120,000 per year

    Job DescriptionJava full stack developer - Java, React, MongoDB, UK remote, Outside contractWe are working with a business who are rebuilding their core platform from the ground up and are looking for a Full stack Java developer who's up for a real challenge.Their system was originally built externally, and they've now brought it fully in-house. So, your...

  • Java Developer

    2 weeks ago


    London, Greater London, United Kingdom Jefferies Financial Group Full time £40,000 - £80,000 per year

    DescriptionJob Description:This role is based in London and will be office based or flexible working with a blend of home and office, subject to Jefferies operational requirements. As part of the Global Equities Front Office technology team, an opportunity exists for an experienced developer for the Equities real-time trade processing and client allocation...

  • Java Developer

    7 days ago


    London, Greater London, United Kingdom Jefferies Full time £104,000 - £130,878 per year

    Job DescriptionJob Description:This role is based in London and will be office based or flexible working with a blend of home and office, subject to Jefferies operational requirements. As part of the Global Equities Front Office technology team, an opportunity exists for an experienced developer for the Equities real-time trade processing and client...

  • Java Developer

    2 days ago


    London, Greater London, United Kingdom RE Partners Full time $50,000 - $200,000

    Java Developer We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on low latency, high-throughput systems in the payments processing domain. This hybrid role is based in the UK or US and offers the opportunity to build scalable, real-time services using modern technologies. If you're passionate...


  • London, Greater London, United Kingdom Natobotics Full time £80,000 - £150,000 per year

    Role:Senior Java DeveloperExperience:8yearsLocation:LondonWork mode:HybridThe Senior Java developer will combine both technical and analytical skills to provide support and maintenance to Bank systems written in Java.The Senior Java Developer will be a member of a development team working closely with other areas of IT and with users to address operational...

  • Java Developer

    2 weeks ago


    London, Greater London, United Kingdom Tec Partners Limited Full time £60,000 - £100,000 per year

    Job DescriptionJava Developer – UK Highest Government Clearance RequiredLocation: United Kingdom (Hybrid/Remote Options)Salary: Competitive + BenefitsRelocation Assistance: May be availableUK Citizenship RequiredSecurity Clearance: Must be able to gain and maintain the highest level of UK Government clearanceOpportunity OverviewWe are seeking a Java...