Senior Integration Developer jobs in Islington

Senior Delivery Manager - Integration Contract (Inside IR35) | £650/day | London (Hybrid) | Financial Services We are seeking an experienced Senior Delivery Manager to lead large-scale integration programmes within a complex Financial Services environment. This is a senior-level contract role delivering enterprise transformation across business and technology platforms, working with multiple...

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 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...

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...

The opportunity As a Senior C++ Developer, you won’t be maintaining legacy code or adding features at the edges. You have the option to work fully remote or partically remote with access to the clients offices. You’ll be designing and building core systems that will ultimately run on millions of industrial edge devices, shaping how they authenticate, communicate, and trust one another — from the...

Ref: SAL 23206 The Skills You'll Need: EUC development with SQL, VBA, AWS RDS, Corporate banking Your New Salary: £50-£55k Permanent, Full time Start: ASAP EUC development Senior consultant - What You'll be Doing: * The Business SME will ensure operational continuity and data integrity by bridging business requirements and technical design across Loan IQ's operation and data. * The role...

Job Title: Senior Infrastructure Developer Location: London (3-days per week on-site) Rate: Flexible dependent on experience (inside IR35) Duration: 6 months Tec Partners are working with a world-leading technology client who are currently looking for an experienced Senior Infrastructure Developer, with a strong background in infrastructure automation, Python and VMware Cloud Foundation (VCF)...

Senior C# Developer Location: London (Fully Onsite) Employment Type: Permanent Salary: £50,000 - £60,000 (DOE) Visa Sponsorship: Not available We're working with a London-based organisation that is looking to hire an experienced Senior C# Developer to join their engineering team in a fully onsite position. This role is ideal for someone who enjoys hands-on development, working closely with the...

Senior Full Stack Developer Is this the role you are looking for If so read on for more details, and make sure to apply today. 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...

Railway Civils Design Integration Lead Summary: We are now recruiting for a Railway Civils Design Integration Lead to join the HS2 Track infrastructure project at the initial design phase which will run concurrently with the completion of main works contracts, which are now at their peak. We are now developing the track design team which will interface with Main Works Civils and Stations...

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...

ORACLE CLOUD INTEGRATION SPECIALIST - ORACLE CLOUD INFRASTRUCTURE (OCI) & ORACLE VISUAL BUILDER CLOUD SERVICE (VBCS) Summer-Browning Associates is currently supporting our client in the Public Sector, who is seeking an Oracle Cloud Integration Specialist for an initial 9-month assignment. Location: London | Remote working The ideal candidate will hold an active SC clearance and possess a...

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 *...

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 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...

You will be a confident, proactive developer who enjoys solving problems, collaborating effectively, and taking ownership of your work.

Senior C#. NET Developer Location: London (Hybrid) Contract: 6 months IR35: Inside IR35 Our client, a leading global investment bank, is looking for an experienced C#. NET Developer to join their team on a 6-month contract. This role is pivotal in modernising and supporting business-critical applications while contributing to greenfield development initiatives. Key Responsibilities Design,...

I am working with a consultancy feeding into the public sector who need 2x Senior NodeJS developers to join a 6 month project. Inside IR35 Remote (1x every 6 weeks to London/ Manchester/ Newcastle office) SC eligible Around £500 per day - Node.js - Typescript - Nunjucks - AWS - Kubernetes - Containerisation - Monitoring – Prometheus, Grafana, Alert Manager - Mentor / leadership experience

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...

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...