Frontend Engineer Jobs with Visa Sponsorship in London

Work with React, TypeScript, Python/Node.js, Next.js, NoSQL/Relational databases, Docker, and cloud deployments. You will collaborate with public sector clients to build full-stack AI applications and custom LLM training data. Scale’s Global Public Sector team applies AI to critical government challenges.

JPMorgan★3.9 (20k)· London

You will work with Java, Spring Boot, Hibernate, JPA, Spring Kafka, microservices, CI/CD, and AI-assisted coding tools; preferred skills include React, Angular, Kubernetes, and Python. You’ll build production-grade full-stack software that powers JPMorgan’s global banking businesses and supports millions of customers.

Apple★4.1 (14k)· London

You will work with Go, React, PostgreSQL, and Kubernetes to build internal tools for SREs and engineers. The Apple Services Engineering team provides infrastructure and tooling that supports cloud engineering and helps make Apple’s services (iCloud, TV+, App Store) highly reliable.

You will work with Python, Django, FastAPI, PostgreSQL, AWS, and distributed async workers. The team builds an AI platform that processes purchasing records and recipes to measure and reduce carbon emissions for the food industry. You will own the backend for a core product in an eight-person startup.

You will work on mobile or web applications, using JavaScript, React, Node.js, TypeScript, Python, or Java for web, or Swift, Objective-C, Kotlin, or Java for mobile. Konrad is a digital consultancy that builds consumer and enterprise digital products.

You'll work with TypeScript, React, Next.js, Node.js, PostgreSQL, AWS, Docker, and AI-assisted development tools, building scalable web applications for a multi-client technology business serving the creative, media and digital sectors.

You will work with Java, Spring Boot, React, TypeScript, Docker, and AWS or Azure on public sector digital transformation projects. The team builds cutting-edge digital solutions for government clients, using Git, CI/CD pipelines, and NoSQL databases such as MongoDB.

You'll work with TypeScript, React, Next.js, Node/N

Ares Management★3.3 (33)· London

This senior full-stack engineer works with cloud-native architectures, microservices, Kubernetes, messaging/event streaming, APIs, and CI/CD. They build scalable applications, data services, and platform capabilities across Ares' global credit investment lifecycle, including deal origination, underwriting, portfolio monitoring, risk management, and analytics.

You'll work with C#/.NET 10, SQL/T-SQL, Azure, React, and AI/agent/document-processing tools. This InsurTech startup is scaling its platform from hundreds toward 10,000+ daily users, building core features, customer experiences, and integrations. You join a team of about eight engineers.

Kaluza★5.0 (1)· London

In this pre-sales engineering role, you'll build mock backends and demo infrastructure using Node.js, TypeScript, React, REST/GraphQL APIs, AWS, PostgreSQL, DynamoDB, and Terraform, leveraging LLMs like Claude and Gemini for rapid prototyping. You'll support Kaluza's Energy Intelligence Platform, which uses data and AI to help energy companies transition to clean energy, by creating technical assets for client validation. The role involves mentoring the pre-sales team on API design and GenAI workflows.

BlackRock★3.8 (632)· London

This role involves building full-stack features using Python, .NET, React, and TypeScript, along with APIs, microservices, and SQL Server, MongoDB, or Snowflake. You’ll join Preqin’s London Engineering team, part of BlackRock, developing cloud-native SaaS solutions for its private markets data platform. The position covers end-to-end product development, CI/CD, and production support.

You will work with LLM integration, prompt engineering, evaluation pipelines, APIs, data plumbing, and AI-assisted tools like Claude Code, Cursor, or Codex. weframe builds custom AI/tech systems for business owners, embedding directly with client teams to scope and build AI-powered solutions. You'll report to the technical co-founder on a small, hands-on team.

You'll work with Node.js, TypeScript, React, AWS, GCP, Docker, Terraform, PostgreSQL, and DynamoDB. This new team builds automated systems that enforce Trustpilot's terms of use for businesses, including misuse detection and enforcement, and collaborates with Data Scientists and ML Ops.

You will work with TypeScript, JavaScript, React, Next.js, HTML, CSS, Node.js (NestJS), PostgreSQL, RESTful APIs, Git, CI/CD, and testing tools like Cypress or Playwright. This role is at a D2C start-up building scalable customer-facing digital products.

You'll work with TypeScript, React, and Python, integrating LLMs, AI agents, or AI-powered APIs. This AI startup automates workflows for complex industries, combining AI, automation, and intuitive user experiences to transform manual processes.

You’ll work with Go, Python or C++, React, TypeScript, AWS, Kubernetes, and AI/computer vision, shipping end-to-end features for a fast-growing AI company building intelligent systems with multimodal AI and real-time data. The small, highly technical engineering team handles backend, frontend, and AI-powered customer products.

React, TypeScript, Node, Python, and Azure. The Scoring team builds the internal platform that turns environmental disclosure data into scores used by thousands of companies and investors. The senior role requires deep Python alongside TypeScript.

As Technical Lead, you will tackle complex backend and AI challenges, feeding context to AI models and designing systems for unstructured data. You will own a product domain end-to-end within an AI-native data collection platform for physical inspection. You will also coach engineers and align multiple team members around a technical vision.

You'll work with Vue 2, jQuery, and Vue 3 on the insurance platform, an end-to-end system from submission to pricing and policy issuance. You'll maintain and improve the existing platform and may contribute to modernisation initiatives using Vue 3.

You will work with HTML, CSS, React, JavaScript, Node.js, Express, APIs, databases, Contentful, Git, GA4, Google Tag Manager, and HubSpot. You will build, maintain, and optimize the Moneycorp website and its wider digital ecosystem to drive customer acquisition, engagement, and conversion.

You'll work with C# / .NET, React, TypeScript, Azure, and Claude Code to build product features across backend and frontend. The team is modernising commercial insurance by creating software infrastructure for broker workflows, quoting, pricing, and scalable platform services.

Barclays★3.9 (6.9k)· London

The CCX Tribe Director leads large-scale transformation using Salesforce, Data, GenAI, and integration services. The role oversees end-to-end delivery of the Client & Colleague Experience tribe, aligning with PBWM and Group objectives. It directs a large team of other people managers.

Deliveroo★3.3 (1.5k)· London

You’ll work with Go, Python, Terraform, AWS, Bazel, and container orchestration/Kafka/observability tooling. The Developer Platform group builds core systems, tools, and environments (monorepo, build ecosystem, IDEs, agentic tooling) to improve developer experience and iteration speed. No team size is specified.

Lloyds Banking Group★3.7 (2.8k)· London

You'll work with Swift, SwiftUI, UIKit, Swift Concurrency, and write unit, integration, and UI tests. You'll join a cross-functional team designing, building, and shipping iOS mobile experiences and consumer-facing features for a fintech product.