Senior Java Developer jobs in Islington

Senior Java Developer | Backend | Microservices | FinTech | London | Hybrid | £120k I'm proud to partner with a global financial organisation, creating an app that allows people in countries like Mexico, Argentina, Colombia, and Brazil manage money in digital dollars and digital euros and it’s designed to protect users from local currency devaluation and make international spending easier. The...

I am currently working with a London-based Commodities client who are actively seeking a Senior Java Developer to work on the development of a business-critical pre-trade platform. What you'll need to succeed: Extensive Java development experience within investment banking - Must have. Extensive Kafka experience. Strong experience with data streaming standards and design patterns. Strong...

The Race to Zero: Senior Java Low-Latency Engineer (Fixed Income) 6 Months Contract London Hybrid Role Competitive daily rate. Our client "A premier global electronic trading powerhouse" is looking for a Java Specialist to lead a mission-critical shift in their E-Fixed Income (eFI) architecture. They aren't just looking for a "developer"-we need a systems artist who understands that in this...

Job Title: Senior Java Engineer (Smart Contract) Location: London Contract: 12 Months Are you a passionate Senior Java Developer looking to make a significant impact in an innovative environment? Our client is seeking a talented individual to join their dynamic team in London, where you'll design and develop cutting-edge microservices for a next-generation loans processing application. If you...

I'm looking for a Contract Java Software Engineer to join my client in their FinTech Business Unit. 6 month | Inside IR35 | Hybrid (1x week London) | £550 per day What you'll do: Develop scalable, high-performance systems and microservices Solve complex technical challenges and advocate best practices Support compliance processes with advanced tooling and analyticsRequirements: - Java + least...

Android Developer Location: Central London (Onsite) Employment Type: Permanent Salary: £50,000 - £70,000 (DOE) Visa Sponsorship: Not available We're working with a growing organisation based in Central London that's looking to hire a Native Android Developer to join their mobile engineering team. This is a onsite role, ideal for someone who enjoys close collaboration, hands-on development, and...

Development Management Implementation (DMI) Senior EngineerExperience, qualification, and soft skills, have you got everything required to succeed in this opportunity Find out below.Are you a dynamic, creative and delivery focused Highways Engineering / Transport Planning professional. Can you use your first-rate technical skills to assist Tetra Tech in a new and exciting relationship with...

You will take a lead role in building high-quality, accessible, and maintainable front-end solutions across a single-page admin platform and a progressive web application. Working closely with UX, design, and backend developers, you will help shape front-end architecture, improve performance, and mentor other engineers.

Senior C# .NET Developer React, AZURE, Elastic, CouchDB / NoSQL Hybrid ( 1 day a week in office, 4 days WFH) Established, profitable company. Join a team of x5 Devs (all long term employees) - hiring x3 more. * Scalable B2B online booking & pricing system. Currently receives up to 120M transactions daily * Build New functionality * Work with others to design new architecture * Re-factor *...

Senior Dynamics 365 CE Developer Remote or Hybrid (London) Nigel Frank International are partnered with an established Dynamics 365 CRM End User who are looking for a Senior Dynamics 365 CE Developer to provide significant contributions to the design and build of enterprise solutions! Responsibilities Deliver high‑quality customisations across model‑driven apps, including forms, views, command...

You will be working on new projects on the core web platform with other great developers in the UK.

You will have the opportunity to attend regular Development team events, professional development opportunities and potentially travel overseas to their international offices if this is of interest.

Senior Full Stack Developer Contract Length: Initial 1 month with strong potential for extension Location: Remote Day rate: £600 - £700 per day outside IR35 Data Idols are working with a private equity-backed data analytics and insights business, is seeking a Full Stack Developer to lead a discovery and assessment phase across its existing product platforms. The organisation operates multiple...

Senior Backend Engineer (Java) London (Hybrid – 1 day a week in the office) Salary up to £85,000 I’m partnering with a well‑established product‑led technology company that builds high‑traffic backend platforms used by large organisations operating in highly regulated markets across the UK, North America and South America. The business has been around for many years and has grown its backend...

Full Stack Developer - Active SC, NPPV3, Java Up to £550 per day - Inside IR35 Remote 6 months My client is an instantly recognisable consultancy who require a Full Stack Developer with Active SC and NPPV3 clearance for a client within the public sector. Key Requirements: Proven commercial experience working as a Full Stack Developer within the Public Sector. Active SC and NPPV3...

Java Developer - Active SC, Java, REST Up to £420 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable Consultancy who are hiring a Java Developer with Active SC Clearance (Security Cleared), Java, ReactJS and NodeJS skills to work with a high profile end client. Key Requirements: Must have Active SC Clearance Strong experience in Java 1.8+ application...

Lead Java Developer - £140k, Equity, Sign-on Bonus Java25, Springboot, Microservices, AWS, TDD, React I am working with a high‑growth FinTech that’s about to enter a huge new chapter. They are a fast‑scaling FinTech that’s in the middle of a major rebrand, new name, new logo, and a shift to a truly global financial platform. The full reveal is coming in this quarter, and the energy inside the...

Platform Engineer - Active SC, Oracle, Nginx Up to £550 per day - Inside IR35 Hybrid 6 months My client is an instantly recognisable consultancy who urgently require a Platform Engineer with Active SC Clearance for an end client within the public sector. Key Requirements: Proven commercial experience working as a Platform Engineer within the public sector. Active SC Clearance. Experience...

Senior Full Stack Developer – Java & React Build Products That Shape High‑Stakes Decision‑Making I have partnered with a fast-growing tech firm who are building AI powered tools used by Fortune 500 business leaders. They are enabling them to make critical decisions across the business and have reportedly been ranked as #1 in their field! They’re scaling quickly, backed by major investment, and...

Senior Developer - Active SC, Java, Oracle Up to £550 per day (Inside IR35) London / Hybrid 6 months My client is an instantly recognisable consultancy who urgently require a Senior Developer with Active Security Clearance (SC), to join a business-critical programme. Key Requirements: Proven experience working as a Senior Developer within the public sector. Active Security Clearance...

I am currently working with a London-based Commodities client who are actively seeking a Senior Java Developer to work on the development of a business-critical pre-trade platform. What you'll need to succeed: Extensive Java development experience within investment banking or commodities - must have. Extensive Kafka experience. Working knowledge of Python frameworks, e.g. Django, Flask, Pandas...