Lead Software Engineers use TypeScript, Java, Golang, Rust, Python; deploy on Kubernetes and Google Cloud; and work with BigQuery, REST, and observability tools. They build and scale supplier integration, search/recommendation, real-time pricing, ML marketing, booking/payment/fulfillment, and AI-powered systems for the company’s packaged-holiday platform.

You'll work with AWS, GCP, SIEM, EDR, DLP, MDM, Python, Go, and TypeScript. Risk Ledger builds a network for supply-chain organisations to share security maturity and visualise risks. You'll mature security operations, detection, incident response, and cloud security across cloud, endpoint, and SaaS environments.

PA Consulting★3.7 (106)· London

You will build and lead a Forward Deployed Engineering unit, working with Domain-Adapted Language Models, Small Language Models, LLM fine-tuning, RAG, agentic workflows, evaluation frameworks, and MLOps. The team deploys production AI systems for strategic clients, growing from a founding cohort of 8-12 to a 100-plus person team.

Build REST and GraphQL APIs and MCP servers in Python (FastAPI, Flask) to expose ML models from Databricks to internal apps, CRM platforms, and AI agents at RBC. Work within the Data Science team to architect the serving layer, handling contract design, authentication, and documentation.

You'll work with Microsoft Fabric, PySpark, Python, T-SQL, DAX, Infrastructure as Code, Git, and Azure DevOps. You'll design, build, and maintain data pipelines, lakehouses, and data warehouses within Fabric to drive business intelligence and analytics.

Version 1★3.9 (39)· London

Technologies include AWS security services, Python, Terraform/CloudFormation, and GitLab CI/CD. You embed within a large-scale cloud migration programme moving workloads to AWS, designing, automating, and enforcing security controls throughout the migration lifecycle.

You’ll build and ship user-facing apps primarily on Databricks Apps, using React, Vue, or Angular, and integrate with REST/GraphQL APIs served by the Data Science team. You are the technical lead on a team migrating from Power BI to custom applications, owning the full lifecycle while mentoring engineers on DevOps practices like Git and CI/CD.

Work with Enfuce's cloud-native Card-as-a-Service platform, issuer processing, BIN Sponsorship, and card schemes (Visa, Mastercard) to design scalable solutions for card issuing. Partner with Product, Engineering, Compliance, and Delivery teams to qualify and scope opportunities, translating customer requirements into feasible solutions while managing risk.

Lead Legl's data function, owning strategy and execution on a stack of Snowflake, dbt Core, Fivetran, GitHub Actions, Metabase, and Snowflake Cortex. You'll build the team from scratch, transitioning data operations from a request queue to self-serve, and partnering with Commercial and Product teams. This is for Legl, which builds software for legal firms.

Design, build, and optimize analytics solutions using SQL, DBT, Power BI (DAX, RLS), GitHub, and cloud platforms (Snowflake, BigQuery, Databricks, Fabric). You will drive data-driven marketing insights for enterprise clients, architecting data models and leading test-and-learn programs. The role also involves mentoring junior team members.

You'll work with JavaScript, Node.js, Express, React, and MongoDB/Mongoose to set technical direction and oversee AI-assisted content-creation features. As Fractional Head of Product at StoryTerrace, you'll own the roadmap for two B2C platforms—an established product and a new self-serve app—directing one Full Stack Developer and advising on hiring. This role reports to the CEO and requires hands-on coding experience to unblock development.

You will work with REST APIs, Webhooks, SSO/SAML, Postman, and iPaaS platforms (Workato, Boomi, Zapier, Make). You will design and implement custom integrations between Rocketlane and systems like NetSuite, Salesforce, and Workday, and assist with data migration strategies. This is a blended customer-facing consulting and engineering role at a SaaS company focused on customer onboarding and professional services automation.

Immuta★3.0 (1)· London

Snowflake, Databricks, AWS, Azure, and Google Cloud partner ecosystem. Immuta automates policy-driven data access and governance for enterprises. As a Regional Account Executive, you will own new business development across the EMEA region, managing the full sales cycle in complex enterprise environments.

HSBC★4.0 (16k)· London

You will work with cloud-based micro-service architecture, API technology, containerisation, DevOps and AI-driven development methodologies. The Payments Services Technology team builds and maintains IT systems for payments processing, sanctions screening, and clearing/settling via SWIFT and domestic payment schemes.

AXA★3.9 (2.9k)· London

Define and govern AXA XL’s enterprise-wide architecture vision, driving simplification, modernization, and an AI-based architecture roadmap. Accountable for enterprise, data, application, and infrastructure architecture, including API strategy, event-driven architecture, and cloud migration. This is a senior executive, leadership team role reporting to the Chief Technology & AI Officer, leading high-performing teams with a global scope.

AXA★3.9 (2.9k)· London

This senior executive leads AXA XL's Technology & AI function, owning product engineering, platforms, cloud, architecture, and IT operations. The role covers agile delivery, microservices/API architectures, DevSecOps/CI/CD, cloud-native engineering, SRE, observability, and embedded AI, overseeing major transformation programs and the technology budget.

You will own delivery execution using Jira, Confluence, and agile frameworks (Scrum/Kanban). The team builds market integrity infrastructure for digital assets — trade surveillance and transaction monitoring. As a founding TPM, you will establish delivery discipline across six squads spanning engineering and data/algorithm teams,

Architecting Sitecore solutions (XP/XM, SitecoreAI, Content Hub, Search, CDP, Personalize, Stream) with Next.js, React, TypeScript, Azure, microservices, APIs, and DevOps. You lead technical delivery for client projects at a digital transformation firm, removing blockers and creating blueprints for delivery teams.

HCLTech★3.7 (11k)· London

As Java Technical Lead, you will lead a team of developers designing and implementing RESTful web services using Spring Boot, with microservices, Docker, and Kubernetes. Your role involves overseeing architecture, code reviews, and mentoring for HCLTech’s Java/J2EE application projects.

HarbourVest★3.1 (16)· London

This role involves productionizing Data Science and AI prototypes using Python, containerized or cloud-based delivery, Snowflake, Power BI, Git, and CI/CD pipelines. You will design analytics workflows and support legacy solutions, partnering with global teams to bridge raw data and analytics-ready assets at HarbourVest, a private markets investment firm.

Sunlighten UK & Europe★2.0 (1)· London

You’ll work with Five9 (or comparable contact-center platforms), Salesforce Sales/Service Cloud, REST APIs, Zapier, and possibly JavaScript, Python, or .NET to build IVR, dialer, lead-routing, live-chat, and SMS integrations. The role owns Sunlighten’s UK omnichannel customer-engagement platform, connecting customers with Sales and Customer Care across voice, digital, and messaging channels. No team size is stated.

Moody's★3.6 (589)· London

Lead validation of credit rating models and AI model risk management at Moody's, working with R, Python, MATLAB, SQL, and preferably C++. The MRG Quantitative Review team independently validates quantitative models and scorecards supporting credit ratings, with a focus on Generative and Agentic AI risks. Requires 10+ years in model development, validation, and risk analytics.

MAREX★3.2 (6)· London

You will work with Power BI, alongside a Data Lakehouse architecture and a central data catalogue, to analyze and validate structured and unstructured risk data. You will act as the bridge between the Risk function and Technology to support data-led risk management, oversight, monitoring and reporting across the firm.

You will build with TypeScript, React, and SQL, using tools like GrowthBook, PostHog, LaunchDarkly, Statsig, Amplitude, Customer.io, and agentic coding tools such as Claude Code or Cursor. You'll join a small, senior engineering team at a seed-stage AI startup creating an AI employee that drafts client work for small businesses, owning the product's growth and activation funnel end-to-end.

HCLTech★3.7 (11k)· London

Work with Java, Selenium, Playwright, Postman, JMeter, Jira, SQL, GitHub, Git, CI/CD, Jenkins, and Azure DevOps. Design and execute manual and automated tests for web, mobile (iOS & Android), API, and backend systems, validating merchant onboarding, payment processing, settlement, and terminal management for Lloyds Banking Group.