23 jobs found for Developer in London, London

The OpportunityYou will join a high-impact development squad building commercial offerings on top of the thriving open-source Backstage framework. You will design and build backend systems, APIs, and developer portals that elevate the developer experience across external commercial clients and internal engineering teams alike.Your ImpactBackend & API Systems: Design, build, and maintain scalable backend services and APIs primarily using TypeScript, Node.js

Role : Avaloq DeveloperLocation: Scotland, UK (Remote)Contract Duration: 10 MonthsJob Description:An Avaloq Developer is responsible for the end‑to‑end design, implementation, customization, and unit testing of solutions within the Avaloq Banking Suite. The role involves delivering high‑quality parameterization, scripting, interfaces, and report development aligned to functional and technical requirements.Key responsibilities include:Implementing Avaloq pa

Experienced Java Developer (Contract)Location - London, UKWork Mode - Hybrid (3 days work from office)Contract duration - 6 monthsActive SC Clearance required - YESAre you a hands-on Java expert looking for your next exciting contract opportunity?We are seeking an experienced Java Developer Contractor to help us design, build, and maintain high-quality enterprise applications. In this role, you will collaborate with cross-functional Agile teams to translat

Network Automation Engineer (Python / Ansible)About the Role We are seeking an experienced automation professional to streamline our infrastructure processes. The ideal candidate is either a Python Developer who has automated repetitive tasks within network, compute, or middleware environments (ideally writing Ansible modules or Terraform providers), or a Network/Compute Engineer with strong scripting and low-level configuration automation experience.Key R

The OpportunityIn this role, you will go beyond building standard user-facing features to focus on critical internal platform architecture. You will work within a lean, agile team to bridge frontend development with backend systems, transforming how internal engineers interact with, validate, and secure core data pipelines.Your ImpactPlatform Innovation: Build and scale developer-facing tools and dashboards from scratch to manage data contracts at the code

Senior C# / .NET Developer | Risk & Securities LendingDuration: 6 Months Contract | Location: London (Hybrid) | Work mode: Hybrid If you're a Senior .NET Engineer who thrives on understanding why a system is being built-not just how to code it-this one's for you. A top-tier financial firm in London is looking for a rounded backend engineer to build high-throughput engines for live Risk calculations and Securities Lending workflows.We're moving away from p

Senior Linux / HPC EngineerLocation: United Kingdom (London / Remote UK - Occasional visit to London Data Center access)Contract: 12 Months (Contract) | Start: AugustThe RoleLooking for a hands-on Linux & HPC Engineer to join a elite Cloud Engineering group supporting high-performance scientific computing platforms. You'll work alongside a Senior HPC SME to support quantitative researchers, data scientists, and modelers, while helping drive a massive moder

The OpportunityIn this role, you will focus on building production-grade Agentic AI platform architectures. Working within an agile team, you will bridge advanced LLM capabilities with enterprise systems to deploy scalable, multi-agent workflows.Your ImpactAgentic Innovation: Build multi-agent systems and stateful workflows using Google ADK, LangChain, or LangGraph.System Guardrails: Implement fallback logic, circuit breakers, and structured outputs via Py

Software Engineer 📍 Location: Central London (Hybrid: Tue-Thu in-office, Mon/Fri remote)⏱️ Duration: 6-Month Contract About the RoleWe're looking for a collaborative Full-Stack Software Engineer with 3 to 5+ years of experience to help us build out new features and integrate AI tooling for an internal platform.If you love crafting clean UI, digging into modern Angular, and connecting front-end applications with solid RESTful back-end APIs, this is a great

Azure Databricks Engineer - Contract - 6 Months+I am looking for an Azure Databricks Engineer to join a project for my new international client. The contract is initially 6 months but has a really strong view to extend into the new year.Rate: £550 per dayLocation: RemoteLength of contract: 6 months with a strong view to extend.Essential skills -Experience with Databricks and Pyspark.Strong Medaliaon architecture experience.Dimensional data modelling experi

🔐 PQC & Cryptography EngineerLocation: 100% Remote (UK-based, with occasional fully expenses-paid office visits)Role Type: ContractClient: Leading UK High Street BankThe RoleQuantum computing is rapidly changing the cybersecurity landscape, and we need an experienced Cryptography Engineer to help future-proof our enterprise infrastructure.You'll be working directly on our Post-Quantum Readiness & Crypto-Agility journey-mapping business impacts, running ri

Role : Senior Azure DevOps Engineer - SC Clearance Location : UK (Remote)Type : Contract (Inside IR35) Job Description SummaryA highly experienced Azure DevOps professional responsible for architecting, delivering, and operating complex cloud and digital platforms that support large-scale public sector transformation. Expert in designing and implementing agile delivery pipelines across infrastructure, application, and platform services, with a strong emph

The OpportunityYou will act as a "software detective"-investigating complex technical issues, keeping core retail systems running smoothly, and driving continuous system improvements.Your ImpactRapid Issue Resolution: Diagnose and resolve complex software glitches across business-critical systems to keep retail operations seamless.Technical Leadership: Serve as a subject matter expert, taking ownership of team decisions and collaborating across teams to so

Role: Junior Software EngineerLocation: London, UK (Hybrid)Hours: 8:00 AM - 5:00 PM | Duration: 6- 12 Month ContractAbout the RoleWe're looking for a bright Junior Engineer to join our London team. You'll build reliable apps, solve real-world tech puzzles, and help automate recurring bugs to keep our systems stable.Mandatory SkillsNode.jsAngularMySQLWhat You'll DoBuild & Debug: Write clean, secure code using Node.js, Angular, and MySQL. Review and debug te

Role: Senior Full Stack Engineer - Investment BankingLocation: London (3 Days Hybrid / 2 Days Remote)Type: Permanent / Full-TimeExperience: 5-7 YearsOverviewAn opportunity to join a global investment bank, designing and scaling cloud-native applications within the risk management space. You will drive end-to-end development using modern Java, Kotlin, React, and cloud technologies while working alongside cross-functional engineering teams.Mandatory SkillsCo

Senior Linux Automation & Platform Engineer (Perl/Python)Location: London (Hybrid - 3 days per week onsite in Canary Wharf)Contract Duration: 12 Months (49 weeks)Benefits: 33 days holiday allowanceAre you a hands-on Linux Automation Engineer with a strong background in Perl and Python? We are looking for an experienced Platform Engineer to support, maintain, and evolve a critical enterprise platform for a large-scale global client.In this role, you will ch

Contract Full Stack / Backend Engineer III - Trust & Safety PlatformsDuration: 6-Month Contract (with potential for extension)Location: 100% Remote (UK-based)Inside/Outside IR35: Insert IR35 The OpportunityWe are looking for a Senior Full Stack / Backend Engineer (Level III) to join the Trust & Safety / Policy Platform team for one of the world's leading, household-name audio streaming platforms.If you are a backend-heavy engineer who enjoys the autonomy o

The Opportunity:In this role, you will go beyond building standard user-facing features to focus on critical internal platform architecture. Working within a lean, agile environment, you will develop and expand multilingual content taxonomy systems, ensuring complex global catalogs are seamlessly organized and discoverable.Your Impact:Platform Innovation: Solution design and end-to-end implementation of capabilities within existing cloud services and data

Job title: UX DesignerType : Contract for 6 months(Inside IR35)Location: hybrid from London (Tue - Thursday onsite)Job Description:Mandatory Proven motion design experience within Product Design or UX/UI animation.As a User Experience (UX) Designer, you own outcomes for one mature project, complex program, or emerging area. You accomplish this by navigating and defining a scalable and sustainable approach to solve difficult problems with limited precedent

Job Title: Brand DesignerAbout the Role As a Brand Designer, you will be the creative architect of our visual identity. Rather than working within an existing system, you will build, evolve, and own the design system that enables the wider team to deliver consistent, high-quality work. You will blend strategic thinking with hands-on craft to ensure the brand is unmistakable across every touchpoint.Key ResponsibilitiesDesign System & Identity: Build and mai

Job Title: Full-Stack Developer (Java & React)Location: London, UK (Hybrid - 3 Days Office / 2 Days Remote)Employment Type: Permanent / Full-TimeAbout the Role:We are seeking an experienced Full-Stack Engineer (5-7 years) to join a leading global financial institution in London. You will design, build, and maintain high-performance, cloud-native applications supporting critical financial operations.Key Responsibilities:Design and deliver end-to-end applica

Night Manager - Immediate Start - East LondonA Night Manager is required to oversee the management of a steelwork subcontractor in East London. The project involves working next to a TFL / London Underground station so will require a valid sentinel card. The Night Manager must have similar experience on relevant projects with supporting references from a leading Main Contractor. Working hours on site will be 12-5:00am and the role will have an expected dur

Company: Established Residential DeveloperLocation: North East LondonProject Type: Major Residential DevelopmentKey Duties and Responsibilities:Oversee and manage all extrnal works on site, ensuring high standards of quality and safety.Coordinate with subcontractors and suppliers to maintain project schedules and deliverables.Conduct regular site inspections and quality checks, addressing any issues promptly.Liaise with the project team to ensure seamless