26 to 50 of 58 Web Engineer Jobs in London

Senior Full-Stack Web Engineer: Scala/React, Mobile Migration

Location
City Of London, England, United Kingdom
FlexTrade is seeking a Senior Web Developer to join the FlexONE team and own critical product surfaces across web and mobile apps. You’ll work end-to-end on a Scala + Play backend and a React + AG-Grid frontend, using gRPC for communication with our core … product’s backend systems. You will lead the technical direction as we build our Web app from an MVP to a comprehensive companion to the desktop application, as well as continuing the evolution of our Mobile app. #J-18808-Ljbffr ...

Full-Stack AI Engineer — Web Apps (Equity Eligible)

Location
Greater London, England, United Kingdom
building AI Employees for HR, IT and Finance with offices in London. We are looking for a talented software engineer to design, develop, and deploy modern web applications that empower teams and automate complex workflows. You will collaborate with product managers, UX designers, and engineers to create high ...

Security Engineer: Web App Pentests & Cloud Defense

Location
City of Westminster, England, United Kingdom
Maria Petersen - Alpha Demo (For Product Release) is seeking a Security Engineer to manage security posture and protect the application from threats. You will perform web app pentests, secure cloud infrastructure, and oversee SOC II controls, with the ability to pull the plug on risky features. A strong ...

Security Engineer: Web App Pentesting & Cloud Security

Location
City of Westminster, England, United Kingdom
Synthesia - Marketplace Account is seeking a Security Engineer to manage our security posture and protect our application from threats. You will oversee pentesting, firewall management, SOC II controls, and security audits, with a focus on both red and blue team exercises. Ideal candidates have 3+ years in web ...

Part-Time QA Engineer - Web & API Testing (Manual)

Location
Greater London, England, United Kingdom
Silastaal is seeking a QA Engineer in London on a hybrid basis (2 days per week in the office) to join a leading igaming organisation. You will ensure the online web application and its CMS meet high standards of quality and functionality, with a strong emphasis on manual … testing. The ideal candidate has 5+ years of manual testing experience for web and mobile apps, hands-on API testing, database familiarity, CMS experience (DotCMS or similar), and excellent written and verbal communication #J-18808-Ljbffr ...

Security Engineer — Web & Cloud Pentesting Expert

Location
City of Westminster, England, United Kingdom
Sarah's Cool Company is seeking a Security Engineer to manage the security posture of our software and protect against threats. You will conduct penetration tests, secure cloud infrastructure, and oversee SOC II controls while coordinating with the security team. Ideal candidates have 3+ years in penetration testing, strong ...

Security Engineer — Web App Penetration & SOC II

Location
City of Westminster, England, United Kingdom
Ryen Hunsaker Demo is seeking a Security Engineer to manage our security posture and keep our application safe from threats. You will conduct penetration testing, secure cloud infrastructures, and lead SOC II controls with a hands-on approach to risk management. The role involves firewall management, incident response ...

Senior Full-Stack Engineer: Scale Web Apps & APIs

Location
Greater London, England, United Kingdom
science. Our squads focus on delivering high-impact features – we favour a highly iterative, analytical approach. We're looking for a Senior Full-stack Engineer to join our Development team. What you will be doing: 🖋️ • Build robust and scalable software for business critical, web-based applications • Build … catching, functional, efficient, and reusable web and mobile-based sites that drive these web applications • Design, build, test, document and maintain API’s and integrations • Ensure quality control using industry standard techniques such as automated testing, pairing, and code review • Work with the Product team to understand ...

Mid‐Senior Full‐Stack Engineer: Build Scalable Web Apps

Location
Greater London, England, United Kingdom
excellent minds to challenge the status-quo and help it reach new horizons. Where you come in? We’re looking for a Full-stack Engineer to join our development team. The Ki platform is the core technology crucial to our success — allowing us to evolve underwriting intelligently and unlock … high-impact features, and we favour a highly iterative, analytical approach. What you will be doing: 🖋️ Build robust and scalable software for business critical, web-based applications Build eye-catching, functional, efficient, and reusable web and mobile-based sites that drive these web applications Design, build, test ...

Staff Software Engineer, Web-Scale Crawling & Ingestion

Location
Greater London, England, United Kingdom
Nebius is hiring a Staff Software Engineer to build the content acquisition and crawling infrastructure for a cutting-edge AI search platform. You will design and operate web-scale crawling, ingestion workflows, and scheduling to handle billions of URLs with high throughput and reliability. You will work with ...

Staff Software Engineer, Web-Scale Crawling & Ingestion

Location
Greater London, England, United Kingdom
Nebius in London is seeking a Staff Software Engineer to build the content acquisition and crawling infrastructure for a world-scale search platform designed for agentic AI. You will design distributed crawling, scheduling, and ingestion systems capable of handling billions of URLs and terabytes of data. Collaborate with indexing ...

Senior Full-Stack Engineer: Build Scalable Web Apps

Location
Greater London, England, United Kingdom
seeking a Full-stack Engineer to build robust, scalable web-based software and enhance the Ki platform. You will design, build, test, and maintain APIs and integrations, while collaborating with Product and UX to deliver features with top-tier user experience. You will work across a modern web ...

Full-Stack Engineer: Build Modern Web Apps & APIs

Location
Greater London, England, United Kingdom
MyDevs is seeking a web developer to build and maintain modern web applications for clients and internal products. You will develop responsive applications, integrate APIs and databases, and debug existing code while collaborating with designers and fellow developers. Strong English communication and the ability to work independently ...

Senior Frontend Engineer, Bio & Web — Hybrid/Remote

Location
Greater London, England, United Kingdom
Entrust is seeking a Senior Front End Engineer to evolve our product experiences. You will work with designers, product managers, and fellow engineers to deliver robust front-end solutions using React and modern architectural patterns. You will prototype across devices, ensure accessibility, and contribute to our test automation ...

Senior Web Design Engineer: Crafty UI & Brand Interactions

Location
Greater London, England, United Kingdom
Lovable is seeking an exceptional Design Engineer who blends frontend fundamentals with a craft-focused eye to execute world-class web content. You will collaborate with design and marketing to empower the next generation of creators and builders. You’ll own and elevate landing pages, implement high-performance ...

Web, API and Integration Engineer

Location
City Of London, England, United Kingdom
those who are committed to doing what is best for our customers. Role Overview Build, integrate and support the 3XD digital platform, combining web development, API delivery, integration and data skills. This role will help deliver new capability, insurer and product change, operational automation and live-service support across … .NET, Razor Pages, SQL Server and Azure DevOps environment. What You’ll Be Doing Develop and support web applications, APIs, services and integrations for the 3XD platform. Work across a .NET 8 MVC application using Razor Pages, JavaScript, jQuery, HTML and CSS. Build and maintain REST APIs, insurer integrations ...

Senior Front-End SDK Engineer (FE/Web) – Flexible & Impactful

Location
Greater London, England, United Kingdom
Entrust is seeking a Senior Front End Engineer to evolve our SDK – FE/Web offerings. You will work closely with designers, product managers and engineers to deliver robust frontend experiences using React, across devices and browsers while meeting accessibility standards. You will contribute to test automation ...

Remote Research Engineer - Large-Scale Web Crawling & Data Pipelines

Location
Greater London, England, United Kingdom
ElevenLabs is seeking a Research Engineer to own large-scale web crawling for our frontier AI models. You will design, build and operate distributed crawlers that source data from the open web, with focus on data quality and scalable pipelines. Responsibilities include solving extraction, deduplication, freshness ...

Remote-First Senior Anti-Bot & Web Scraping Engineer

Location
Greater London, England, United Kingdom
Adthena, a leading paid search intelligence platform, is seeking a Senior Anti-Bot Engineer to design, build, and operate large-scale scraping systems. You will focus on Google-like search environments and tackle dynamic rendering, anti-bot defences, and high-volume data collection. Role intersects data engineering, reverse engineering ...

Security Rules Engineer — Build Resilient Web Defenses

Location
Greater London, England, United Kingdom
Cloudflare is seeking a talented Systems Engineer to join the Security Rules team in London or Lisbon. You will work on microservices written primarily in Rust, with technologies including Docker, Go, PostgreSQL, Redis, Memcached, gRPC, Kafka, Clickhouse and Unix/Linux tools. You’ll design scalable security solutions ...

Back-end Engineer: Build Scalable Web Apps & APIs

Location
Greater London, England, United Kingdom
Business d’Or LLC. is seeking an experienced Back-end developer to join our IT team in Greater London. This role requires expertise in server-side applications and a passion for creating new software while ...

Senior Front-End Engineer, Bio - FE/Web (Remote/Hybrid)

Location
Greater London, England, United Kingdom
Entrust, a leader in identity-centric security, is seeking a Senior Front End Engineer to evolve our Bio - FE/Web offering in London. You will work with designers, product managers and engineers to deliver high-quality experiences using React and modern front-end architectures. We value flexible ...

Web Archiving Data Analyst & Crawl Engineer — Innovate

Location
City Of London, England, United Kingdom
leading government archive service in London seeks a skilled Data Analyst specializing in web archiving. You will develop innovative data processes and engage with experts to enhance web crawling capabilities. Ideal candidates will have experience in web data analysis, a passion for technology, and a proven ability ...

Design Engineer: Real-Time, Adaptive Web Interfaces

Location
Greater London, England, United Kingdom
Hunter Bond is working with a small, ambitious early-stage AI start-up quietly building something different in the web space. They’re seeking a Design Engineer to transform ambitious ideas into beautiful, interactive, user-facing experiences. This role sits at the intersection of product design and frontend … engineering, blending craft with creativity to shape how modern web experiences should feel — fluid, intelligent, and deeply personalised. #J-18808-Ljbffr ...

Frontend Engineer — Build Global, Impactful Web Apps

Location
Greater London, England, United Kingdom
Too Good To Go is building a brand-new engineering hub in London and seeks foundational Frontend Software Engineers. You will join a completely new team, define, build, and deliver product features for an international ...