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SC Cleared Backend Engineer CQRS/Event-Driven Hybrid London
Mid-level backend engineer joining an Advanced Resource Managers delivery pod in hybrid London, designing, building and maintaining scalable, distributed backend systems using event-driven architecture and CQRS patterns, implementing secure RESTful APIs in an Agile team. An SC security clearance is required.
Mid Backend Engineer
6-month contract (Inside IR35, up to £580/day) for a Mid Backend Engineer, London-based hybrid (2-3 days onsite). Building scalable, event-driven backend systems using CQRS and Event Sourcing, with backend work in .NET/Java/Python, Azure Service Bus messaging and REST APIs. Active UK SC clearance is essential.
Backend engineer for booking and payments
Backend engineer at Fresha in London, owning booking and payments features end to end on its SaaS operating system for the beauty and wellness industry. Day to day: designing, shipping (daily deploys behind feature flags) and operating distributed, event-driven backend services across multiple repos.
Senior Java Engineer
CGI is hiring a Senior Java Engineer to design, build and deliver secure, cloud-native applications for UK public sector modernisation, working with Java, Spring Boot, AWS, PostgreSQL and DynamoDB. It's a hybrid role requiring 3 days/week on client site in Swansea and UK Security Clearance eligibility.
Senior Java Developers
Senior Java Developer at CGI building secure, scalable back-end microservices for major UK Government digital programmes. Day-to-day: designing and developing Java/Spring Boot services and RESTful APIs, containerised with Docker/Kubernetes, on cloud (AWS/Azure/GCP), within Agile/CI-CD teams. Requires UK Security Clearance or eligibility; predominantly hybrid work.
Java Engineer
Java engineer at CGI designing and delivering secure, cloud-native Java/Spring Boot applications on AWS to modernize UK public services. Day to day: building microservices and REST APIs, working with PostgreSQL/DynamoDB, CI/CD and testing in Agile teams. Hybrid role: 3 days/week at the client's Swansea site; UK security clearance (or eligibility) required.
Lead Java Developer
Senior lead Java developer at Citibank working on Event Master Central, Citi's corporate actions repository and distribution platform within its enterprise reference data organization. Day to day: designing Java/Spring Boot microservices with Kafka event streaming, SQL, CI/CD and containers, while mentoring a team of developers in a hybrid 3-days-in-office role in Northern Ireland.
Python Software Engineer
A 6-month inside-IR35 contract role building and operating scalable Python backend services and APIs on serverless AWS (Lambda, API Gateway, DynamoDB, S3) with Terraform and CI/CD, supporting a large UK public sector digital programme at national scale.
Senior Python Software Engineer - FinTech
Senior Python engineer at an established FinTech firm specialising in automated investment reporting. Leads projects end to end — hands-on Python (Django/FastAPI) backend development, data processing, architecture and technical ownership — while helping drive AI/LLM adoption. London hybrid: 3 office days, 2 WFH.
Senior Python Developer Data AWS
Hands-on Senior Python Developer / Backend Engineer at a scaling fintech that built a real-time energy trading platform for large industrial and commercial energy buyers. The role blends backend software engineering with data engineering using Python and AWS; based in London with WFH options, salary up to £90k.
Lead Python Developer — FinTech, Hybrid & Mentoring
Lead a small Python team building features for a core banking platform, including integrations with major banks like HSBC. Hybrid role based in a London office, working with Python, FastAPI, cloud services, and SDLC best practices.
Python developer in fintech
Lead a small tech team as a hands-on Python Developer/Team Lead at a profitable FinTech start-up, splitting time roughly 50/50 between architecture/design and people management. You'll build features and refactor a young core banking platform that integrates with HSBC, using Python, FastAPI and GCP in a hybrid Central London role.
Front End Software Engineer
Front End Software Engineer at CGI (Scotland, hybrid) building responsive, accessible, high-performing web applications for clients within Agile teams. Stack centers on HTML5, CSS3/Sass, JavaScript/TypeScript and a modern framework (React, Angular, or Vue.js), consuming REST APIs. Requires UK security clearance eligibility.
Software Engineer (Golang/iOS)
12-month contract (hybrid, 2-3 days/week in Bristol) for an engineer building the platforms behind mobile apps at scale: Go microservices, REST/gRPC APIs, Kubernetes infrastructure, CI/CD/IaC, and reusable Swift iOS frameworks/SDKs. Pays £500-800 per day depending on experience.
Senior iOS Engineer
Senior iOS engineer at Capital One UK (Nottingham, hybrid Tue-Thu in office) building mobile features for credit-card customers using Swift and iOS tooling, AWS for backend orchestration, and Jenkins/Git CI/CD. You mentor juniors, champion TDD/BDD quality practices, and ship frequent releases in a regulated lending environment.
Senior iOS Engineer – Live Auction & Commerce
Senior iOS engineer on the Instant Rips team building a live-break commerce and auction experience on Fanatics Live in London. Works day to day in a SwiftUI-first codebase using TCA, Swift concurrency, and Apollo GraphQL with a modular Tuist/XcodeGen setup, owning features end to end from API contracts to testing.
Senior React Developer
CGI (IT and business consulting) seeks a Senior React Developer in Glasgow for a hybrid role to design, build and maintain responsive, accessible front-end applications using React.js, modern JavaScript (ES6+), HTML5 and CSS3, integrating REST APIs and collaborating with designers, backend developers and product stakeholders.
iOS Developer
iOS Engineering Team Lead for a fast-growing energy/EV technology business in London (hybrid, 3 days onsite): ~60-70% people leadership and delivery ownership of an iOS team, 30-40% hands-on Swift/SwiftUI work on a customer-facing app for EV customers. Salary up to £130,000.
iOS Developer
iOS Developer at CGI (Glasgow, hybrid) building native iOS applications in Agile delivery teams — designing user-focused interfaces, integrating RESTful APIs and third-party services, and debugging/optimising performance. Core stack: Swift and/or Objective-C.
Senior Android Developer
Senior Android contractor joining a collaborative digital team to build new features for a highly-used mobile app, including customer reward and engagement functionality (points earning). Hybrid role based in Cardiff on a 6-month inside-IR35 contract paying up to £500 per day via Sanderson Recruitment.