Java Developer

3 days ago

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

Job Description
Java full stack developer - Java, React, MongoDB, UK remote, Outside contract
We 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 mission () is to get under the hood, untangle what's there, and help them design something better — cleaner, faster, and built to scale.

You'll work with the Tech Manager, Product Owner, and Solution Architect to modernise the platform and shape the next generation of features. This is the kind of role where your ideas get implemented — and your code has a visible impact from day one.

What You'll Be Doing

  • Own projects end to end — from discovery and design to delivery and optimisation.
  • Work across the stack using Java, React, AWS, MongoDB, and Elasticsearch.
  • Refactor and re-engineer core components to make the platform faster, more reliable, and easier to extend.
  • Collaborate closely with product and architecture teams to solve technical problems creatively.
  • Review code, mentor teammates, and bring fresh thinking to the table.
  • Write clean, well-documented code that's built to last.

Experience

  • Strong experience as a Java full stack dev
  • A solid understanding of modern software design principles and data structures.
  • Practical experience with Java, React, MongoDB and AWS
  • Curiosity and persistence — you enjoy cracking tough problems and simplifying complexity.
  • The ability to balance autonomy with collaboration — you can work independently but know when to jump in with the team.

Bonus Points For

  • Experience modernising or replatforming legacy systems.
  • Familiarity with microservices, CI/CD, or serverless architectures.
  • An interest in building scalable, high-performing distributed systems.

If this sounds like you then let me know and we can set up a call.

2 stage interview process completed in the next 2 weeks and immediate start thereafter

  • Java Developer

    2 weeks ago

    London, Greater London, United Kingdom ixceed Full time £70,000 - £80,000 per year

    Role: Java Developer-21/24Location: London, UKMode: OnsiteType: PermanentJob Description:We are looking for a highly skilled Senior Java Developer with strong hands-on experience in modern Java technologies and a solid background in the Banking domain. The ideal candidate will be proficient in Java 21/24, Spring, REST controllers, and API development, along...

  • Java Developer

    5 days 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 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

    1 week ago

    London, Greater London, United Kingdom Stott and May Full time £104,000 - £235,200 per year

    Job DescriptionJava DeveloperLocation:London (Office-Based, 3 Days per Week)Duration:6 MonthsDay Rate:£510 Inside IR35Start Date:ASAPThe RoleWe are seeking an experiencedJava Developerto join a leading technology-focused organisation in London. You will design, develop, and maintain full stack web applications, working across both front-end and back-end...

  • Java Developer

    2 weeks ago

    London, Greater London, United Kingdom Information Tech Consultants Full time £35,000 - £45,000 per year

    We're Hiring: Java Server-side EngineerLocation: Hybrid (UK-based, Bristol)Type: Full-time | PermanentLevel: Junior to MidUK based candidates only.Job Summary:We are seeking a skilled and motivated Java Developer to join our growing software development team. As a Java Developer, you will be responsible for designing, developing, and maintaining...

  • Java Developer

    20 hours 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...

  • Senior Java Developer

    3 days ago

    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 KX Full time £60,000 - £100,000 per year

    About KXKX software powers the time-aware data-driven decisions that enable fast-moving companies to outpace competitors, realizing the full potential of their AI investments. The KX platform delivers transformational value by addressing data challenges related to completeness, timeliness and efficiency, ensuring companies understand change over time and can...

  • Java Developer

    5 days 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...

  • Java Developer

    7 days ago

    London, Greater London, United Kingdom hackajob Full time £40,000 - £80,000 per year

    hackajob*is collaborating withSolirius Replyto connect them with exceptional tech professionals for this role.*About Us**Solirius Consulting delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients,...