You will execute A/B tests, multivariate tests, and personalisation campaigns using platforms like Optimizely, VWO, and Adobe Target, working with analytics suites such as Google Analytics 4 and Adobe Analytics, plus CMS and CDP tools. The role drives daily execution of the Rapid Iteration & Optimisation framework, collaborating with Paid Media, CX, and Development teams to deliver performance-enhancing site updates.

Works with A/B testing tools (Optimizely, VWO, Adobe Target), analytics (GA4, Adobe Analytics) and CDPs (Segment, Tealium), plus basic HTML, CSS, JS. Executes daily high-velocity site optimisation and continuous improvement for global clients within WPP Enterprise Solutions, collaborating with Paid Media, CX, and Development teams.

Superdrug★3.3 (3k)· London

Design polished, accessible, development-ready digital experiences for Superdrug’s website and mobile app using Figma (including components, variants, and design system patterns). Own product-design projects from problem definition through wireframing, prototyping, and high-fidelity UI, collaborating with developers, product teams, and analytics.

You will lead the Class IIa medical device certification (MDR/CE) for Bookable Navigator, an AI-driven care navigation and appointment booking system integrated with the NHS. You will own the technical file, post-market surveillance, and evidence generation, working within the Clinical Team (2 CSOs and 1 regulatory lead).

You will work with Python, FastAPI/Flask, PostgreSQL, MySQL, BigQuery, GCP and/or AWS, and IAC/CI/CD tools to build production-grade data pipelines and MLOps infrastructure. You’ll join Ki’s commercial performance insights squad to upgrade algorithm decision data to a versioned event stream and support a Monte Carlo simulation engine for an algorithmic insurance carrier. The role is in an agile, cross-functional squad.

Build and run an AI platform connecting workloads to LLM providers (Anthropic, AWS Bedrock, OpenAI) using Python/Go, API gateways (Kong, Envoy, Apigee), RBAC/OIDC, and MCP patterns. The team owns the gateway, orchestration, and governance layers. As Principal, you set technical direction across CreateFuture, an AI-native consulting partner.

Work with Python or Go, API gateways (Kong, Envoy, Apigee), and multiple LLM providers (Anthropic, AWS Bedrock, OpenAI). Build and run the infrastructure connecting engineers and client workloads to those providers, including the API gateway, orchestration, lifecycle tooling, and governance controls.

Build and run the API gateway, routing layer, and orchestration tooling connecting engineers to multiple LLM providers (Anthropic, AWS Bedrock, OpenAI) using Python or Go, Kong, and RBAC/OIDC. You will own delivery of key platform components—from the inference control plane to the capability marketplace and governance controls.

Arup★4.0 (352)· London

You will lead AI advisory consulting using data and AI technologies, shaping strategy, governance, and investment decisions for clients across the built environment (Cities, Energy, Water, Transport). This senior role focuses on client engagement, business development, and thought leadership within Arup’s UK, India, Middle East, and Africa region, operating through influence rather than direct line management.

Cognizant★3.8 (17k)· London

Work with ServiceNow modules (CSM, ITSM, ITOM, CMDB, TNI), IntegrationHub, TMF APIs, NowAssist/GenAI, JavaScript, Flow Designer, REST/SOAP, and MID Server. Lead solution design and implementation for telecom BSS/OSS/Network environments.

NiCE★3.4 (30)· London

Develop machine learning and AI solutions using Python, SQL, NLU, and NLP. Build, evaluate, and improve models and pipelines for customer operations, working with text and structured data. Implement and evaluate new techniques across the full ML lifecycle.

Geomiq★0.0· London

You'll build AI agents and automations using n8n, GPT, Claude, Gemini, and other LLMs, plus APIs, webhooks, SQL, Python, and JavaScript. As the first dedicated AI builder at Geomiq, you'll create internal tools to automate workflows across Sales, Operations, Supply Chain, Finance, and Product for their digital manufacturing platform.

Segen★3.6 (14)· London

As Senior Platform Engineer, you'll work with Microsoft Azure (Hub and Spoke networking), Azure DevOps YAML pipelines, and IaC via Bicep or Terraform, alongside TDD, CI/CD, and DevSecOps practices. You'll build secure, scalable infrastructure for Segen, the UK's largest solar PV, energy storage, and EV-charging distributor, while mentoring junior engineers.

You will work with AWS (serverless, Bedrock), TypeScript/JavaScript, Infrastructure-as-Code (Terraform/CDK/CloudFormation), CI/CD, and API design. The Commerce & Technology division designs and builds cloud applications for global brands, specializing in agentic AI platforms and emerging Agentic Commerce standards.

Debenhams Group★3.5 (3k)· London

Work with GA4, Google Merchant Center, Excel/Sheets, and optionally Python, JavaScript, PHP or HTML to drive organic traffic for Karen Millen. Own the SEO channel—leading technical audits, content strategy, link-building, and pioneering AIO and GEO initiatives.

Build and own the in-house automated testing platform at a leading global Hedge Fund, working across the full stack with React, JavaScript, and Python. Integrate with the toolchain for requirements management, source control, and transactions data, using GCP, Terraform, and CI/CD. Drive the platform toward agent-orchestrated, predictive testing, working autonomously within a small, efficient QA function.

You will work with Azure, CI/CD pipelines, and test automation to build component-oriented front ends. As a Lead Engineer on the Digital Product Team at Canada Life UK (a financial services firm), you will set UI/UX, accessibility, and front-end performance standards and coach engineers across the product lifecycle.

You will build a fully bespoke blockchain from scratch using Rust, C++, CUDA, Python, Shell for the protocol layer; Solidity, Foundry, Hardhat for smart contracts; and TypeScript with React, Next.js, Node.js for frontends. This greenfield project powers Arena Entertainment’s digital entertainment platforms, spanning gaming, DeFi and Web3.

JS/TypeScript, React, Node, Azure, infrastructure as code, and AI tools. You’ll build the compliant data layer for community healthcare, enabling pharmacies to use patient data to grow revenue and relationships within NHS-assured clinical systems. You’ll be the first engineer, working directly with the CEO and founding team on product decisions.

Zaizi★4.0 (5)· London

Building mission-critical web apps, APIs, and microservices (TypeScript, React, Node.js, Python) plus native Android/Kotlin tactical systems with AIDL IPC and CoT routers for MoD programmes. Working on edge platforms (TAK) with CI/CD (Docker, GitLab CI) and NCSC Secure by Design standards. Mentoring mid-level engineers.

Lush Cosmetics★3.9 (3.4k)· London

Backend QA Engineer at Lush's Digital team, part of a global platform transformation. You'll test GraphQL/REST APIs, microservices, and databases (PostgreSQL, MySQL, MongoDB) using TypeScript/Python, Docker, CI/CD, Kafka/RabbitMQ, k6/JMeter, and security standards like OWASP. The cross-functional team ensures server-side reliability and scalability.

Google★4.3 (6.2k)· London

You will work with C++, Java, Kotlin, TypeScript, front-end frameworks, API development, machine learning, agentic coding, and GCP. This role is in Google Labs Science, which partners with DeepMind to transform GenAI research (e.g., Co-Scientist, AlphaEvolve) into products that accelerate scientific discovery.

Lineten★2.6 (5)· London

Build cloud-native services using C#, .NET, Azure, and Microsoft Fabric with a Medallion architecture, while integrating AI/LLMs and automating infrastructure. You’ll own end-to-end development, data pipelines, and site reliability for a small startup team building internal and external data self-service solutions.

Guiding Reset Health's Live Platforms team, this role combines hands-on development in React Native and Kotlin with scrum master duties. The team delivers production releases in two-week sprints, handling customer setups, enhancements, bug fixes, and 2nd line support using Mongo, Git, CI/CD, Jira, and REST APIs.

Arup★4.0 (352)· London

Python, Git/GitHub, pytest/unittest, CI/CD pipelines, AWS/GCP/Azure, Terraform/Docker, MATSim, Java, and PopulationSim. The Transport Modelling and City Modelling Lab teams build agent-based and activity-based models to solve urban transport challenges, using data and software engineering to plan future mobility systems.