Mid-Senior Front End Developer (React.js) at Ratio Recruitment Ltd | City of London

We encourage you to apply for the position that aligns most closely with your skills and experience. If our team identifies a better fit for you in another role, we will reach out with that opportunity.Position Overview:As a Front-end Developer at Squarepoint, you will play a pivotal role in enhancing the user experience on our advanced research and trading platforms. Utilizing React and TypeScript, you will create fully-functional applications that enable real-time data access and facilitate the exploration of extensive data sets crucial to our trading workflows and operations.Your efforts will significantly contribute to swift decision-making and help maintain our competitive edge in a fast-paced trading landscape.

Role Overview Methods is hiring a Front-End Developer in London. This role focuses on building responsive, interactive user interfaces that improve the experience for end users. Collaboration with designers and back-end developers is a regular part of the work, ensuring web applications function smoothly and look polished. What You Will Do Develop user interfaces for web applications Work with designers to translate visual concepts into code Coordinate with back-end developers to integrate APIs and services Ensure applications are responsive across devices Location This position is based in London, England, United Kingdom.

Join our dynamic team at dev2 as a Front End Developer specializing in innovative flight solutions. We are looking for a creative and skilled individual who is passionate about building user-friendly web applications. You will collaborate with designers and backend developers to create seamless and engaging user experiences.Your role will involve utilizing cutting-edge technologies to enhance the functionality and aesthetic of our flight-related applications. If you thrive in a fast-paced environment and are eager to contribute to the aviation industry, we want to hear from you!

Join Our Team as a Front-End Angular Developer!Location: London, Old Street Ref: 027-01About UsAt New Route Recruitment Limited, we are dedicated to helping individuals save significantly on their energy expenses, year after year, without any cost to them. Many energy suppliers automatically switch customers to higher tariff rates after their initial 12-month contracts end, resulting in potential overpayments of £300 per year on average, and even more for larger households. Our innovative automatic switching technology ensures that our clients never have to worry about losing out on savings.As we experience an exhilarating phase of growth and expansion, we are in search of a talented Front-End Developer skilled in Angular. This is an exciting opportunity to be among the first members of our start-up team, where your contributions will have a significant impact. We are looking for someone who is eager to work hard, take initiative, and grow alongside our business!

Join our dynamic team at Ratio Recruitment Ltd as a Front End Developer in London! We are seeking a talented individual who is passionate about creating engaging and user-friendly web interfaces. In this role, you will collaborate with designers and back-end developers to deliver high-quality web applications that enhance user experience.

About the Role m3usa is hiring a Front-End Developer in London. This position works closely with designers and back-end developers to build web applications that deliver smooth, reliable user experiences. Collaboration across departments is a regular part of the job. What You Will Do Develop and maintain modern web interfaces Work with design and back-end teams to implement new features Help shape user experiences through thoughtful front-end code Who We’re Looking For Experience with current web technologies Interest in creating high-quality, user-focused applications Comfortable working with colleagues across different functions This is a good fit for someone who enjoys building things that users notice and value, and who likes working in an environment where things move quickly.

We are seeking a talented Front End Developer with a strong background in Vue.js to join our dynamic team in Central London. As a key player in our development projects, you will be responsible for building user-friendly web applications that deliver exceptional user experiences.Your expertise in Vue.js will be crucial as you collaborate with designers and back-end developers to create seamless interfaces. You will have the opportunity to work on exciting projects that drive innovation and improve our products.

Join our dynamic team at EMCO Corporation as a passionate Website Designer and Front-end Developer. You will leverage your creative skills and technical expertise to design engaging, responsive websites using WordPress, while ensuring optimal user experiences and adherence to web standards.Key Responsibilities:Design, develop, and maintain a wide range of websites that align with our organizational goals.Work closely with our web development team to create intuitive and user-friendly interfaces.Enhance website performance and guarantee responsiveness across various devices.Quickly troubleshoot and resolve any website-related issues to maintain optimal functionality.

Front-End EngineerLocation: LondonDESCRIPTIONJoin us in revolutionizing the video production and distribution landscape with our innovative cloud-based platform designed for live, social, and mobile content. Our cutting-edge platform simplifies the complexities of professional video creation and dissemination, and we proudly collaborate with industry giants such as Sky Sports, BT Sport, Eurosport, and many others.As a part of our team, you will play a crucial role in working alongside top broadcasters and rights holders, while integrating seamlessly with major social media platforms like Facebook, Instagram, and YouTube. Our partnership with Facebook Live makes us a preferred global choice for live streaming solutions.Powered by Amazon Web Services, our platform is meticulously designed for scalability and high availability, ensuring that our global client base receives uninterrupted service. Here, you will thrive in an agile environment where you can experiment with the latest technologies without sacrificing reliability or speed.We believe in nurturing talent from the ground up, which is why we focus on hiring talented graduates and junior engineers. On your first day, you will be paired with a dedicated mentor who will support you in overcoming technical challenges and help you carve out your niche within our dynamic team, whether it's in video, data, front-end, architecture, or streaming. Regular performance evaluations will guide your career progression.We are committed to fostering a happy and engaged workforce, encouraging our engineers to leverage the latest technologies and take on comprehensive responsibilities from design and architecture to production support. This unique approach has cultivated a supportive environment that retains top talent, with many of our senior engineers starting as graduates and advancing to leadership roles.We value camaraderie and enjoy social activities as a team, ensuring that our workplace feels like a family. If you are passionate about technology and innovation, then you are in the right place!As a Front-End Engineer, you will be integral to developing a browser-based video editing tool akin to Premiere Pro or Final Cut, crafting beautiful and reusable UI components, and tackling functionality challenges within our web applications. You will work with state-of-the-art technologies such as Media Source Extensions, Canvas, React, ES6, Webpack, styled-components, and Storybook.Join us and continue your journey of learning and growth!

Front-End Developer – React or Angular (Front Office & Risk Systems)Exciting Opportunities with MARGO in LondonMARGO is a leading tech-driven consultancy dedicated to delivering exceptional IT solutions to the financial services sector.We excel in intricate Front Office and Risk environments where user interfaces play a pivotal role in trading, risk management, and decision-making systems. Our expert consultants focus on crafting and developing high-performance, real-time, and sustainable UI platforms utilized daily by Front Office, Risk, and technology teams.By joining MARGO, you will tackle technically challenging UI platforms while collaborating closely with business users. You will thrive within a supportive structure that emphasizes strong engineering principles and personalized career advancement.Business ContextIn this role, you will be integral to the evolution of modern web-based user interfaces within Front Office and Risk technology environments.The platforms you will work on typically facilitate:· real-time trading and monitoring workflows· risk and P&L visualization· analytics and control dashboards· operational and decision-support toolsThis position demands a strong commitment to UI architecture, performance, and code quality, with close collaboration among backend, production, and business teams.Role OverviewWe seek a Front-End Developer with substantial expertise in either React or Angular to engage with intricate Front Office and Risk UI platforms.Candidates should be proficient in one of these frameworks; we require deep knowledge rather than a general familiarity.

Join us at Magentic as a Front-end Product Engineer and play a pivotal role in revolutionizing how professionals at leading global companies utilize AI in their everyday tasks. Here, you will have the opportunity to influence the core product experience for enterprise users as they collaborate with advanced AI agents to achieve unprecedented outcomes.If you are passionate about exploring the latest advancements in human-computer interaction, this is the place for you.We are at the forefront of AI innovation, developing next-generation agentic systems capable of managing comprehensive procurement workflows. Our mission is to fortify global manufacturing supply chains, tapping into a $3 trillion market opportunity.Excitingly, we are backed by renowned investors including Sequoia Capital, and you will be collaborating with a remarkably talented team comprised of experts from OpenAI, Meta, Revolut, NASA, and McKinsey.

Join us as a Front-end Engineer at Magentic, where you will play a pivotal role in shaping the way leading enterprises interact with AI on a daily basis. You will enhance the core product experience for users as they collaborate with AI agents to achieve what they once thought was impossible.If you’re passionate about human-computer interaction and eager to work at the forefront of AI technology, we want to hear from you!We are breaking new ground with innovative agentic systems capable of managing entire procurement workflows. Our mission is to empower global manufacturing supply chains to adapt in a constantly evolving world, targeting a $3 trillion market opportunity.Excitement continues as we are backed by top-tier investors, including Sequoia Capital, and you will be collaborating with a highly skilled team drawn from industry giants such as OpenAI, Meta, Revolut, NASA, and McKinsey.

About HookAt Hook, we are revolutionizing customer growth through the power of artificial intelligence and machine learning. Our innovative solutions empower businesses to accurately forecast revenue, enhance customer loyalty, and unlock significant value from their existing customer base.As a Series A startup, we are proud to be ranked 33rd among the Sifted fastest-growing startups. With substantial funding from leading investors across Europe and the US, including Balderton Capital and Lightspeed, we collaborate with some of the most dynamic companies globally. We seek passionate individuals eager to contribute to our vision of transforming customer engagement while building an exceptional workplace culture.The RoleWe are on the lookout for a talented Front End Engineer to enhance the user experience of Hook’s products. You will collaborate with our design and product teams to translate complex data and workflows into seamless, user-friendly interfaces. Utilizing TypeScript and cutting-edge front-end frameworks, your work will result in fast, scalable, and user-approved interfaces.This role offers you the chance to take ownership of features from inception to deployment while having a real impact on our front-end architecture and practices as we expand.Your ResponsibilitiesDesign and implement high-quality, maintainable front-end features using TypeScript and frameworks like React.Work closely with product designers to create polished, user-centric interfaces.Convert complex data insights into clear, engaging visualizations and dashboards.Optimize components for speed, scalability, and accessibility across various browsers and devices.Contribute to the evolution of our front-end architecture and development standards.Collaborate with back-end engineers to design APIs and integrate new functionalities.Provide innovative ideas that shape the appearance and performance of Hook’s product.Who You AreA proficient front-end engineer with extensive experience in TypeScript, React, and modern web technologies.Dedicated to building performant, accessible interfaces that enhance user experience.

Join our dynamic team as a Front End Developer specializing in React, CSS3, Redux, and Jest. This is a fantastic opportunity to work remotely for an initial period of 8 weeks on an exciting project.As a Front End Developer, you will be responsible for building responsive web applications and optimizing user interfaces to enhance user experience. Your expertise in modern JavaScript frameworks and testing methodologies will drive our project forward.

Join a Transformative OrganizationAt Palantir, we create groundbreaking software that revolutionizes data-driven decision-making and operations. Our platforms empower partners to develop life-saving medications, anticipate supply chain disruptions, locate missing children, and much more by delivering crucial data to those who need it most.About the RolePalantir Foundry is an all-encompassing platform designed for data-driven decision-making. We are redefining how organizations securely integrate their data, enabling them to construct reliable and essential applications on a unified foundation. Our clients utilize Foundry to conduct in-depth analyses that drive core operational strategies. They can also develop sophisticated applications such as operational dashboards, alert management systems, and resource allocation tools powered by advanced machine learning models.As a Senior Front End Software Engineer specializing in application development for Foundry, you will play a key role in designing the tools employed by thousands of users to create the advanced applications that fuel their businesses. Your responsibilities will include architecting and developing user interfaces, managing state, and implementing access patterns to facilitate data-intensive workflows that are both powerful and user-friendly. One day, you may engage with users to gain insights into their needs and pinpoint product enhancements; the next, you could collaborate with your teammates to address intricate UX challenges by integrating customer feedback and insights from various industries.You will routinely tackle complex technical challenges that require you to outline solution designs and identify incremental steps for delivering new features. This includes owning the APIs and schemas that underpin your frontend code and collaborating with backend engineers to develop them.We seek engineers who are dedicated to solving real-world issues and enabling both developers and end-users to achieve optimal results. If you are passionate about creating reliable, high-performance, and scalable systems, as well as designing robust APIs and primitives, this role offers a unique opportunity to significantly influence our products and the individuals who utilize them.Frontline OpportunityFoundry Software Engineers may have the chance to participate in Frontline, a distinctive program that offers a short-term assignment with customers. This immersive experience allows you to work directly with users, gaining valuable insights into how our products are applied and the challenges faced by our clients. Unlike traditional engineering roles, Frontline exposes you to complex, ambiguous problems, empowering you to innovate solutions that directly enhance user experiences.

About 1st FormationsAt 1st Formations, we empower entrepreneurs to confidently start, manage, and expand their businesses. Our mission is to eliminate the hurdles of company formation, compliance, accounting, and payroll, ensuring that these essential services are seamless and reliable from day one. This allows founders to focus on what truly matters: building and scaling their businesses.As a leading provider of company formation and compliance services in the UK, we are dedicated to creating a modern, fully integrated technology platform that supports entrepreneurs at every step of their journey. Our platform unifies formation, compliance, accounting, payroll, and ongoing business support into one cohesive experience.No more disjointed solutions or outdated workflows masquerading as software. We offer a single, scalable platform designed for ambitious founders looking to move quickly, stay compliant, and grow with confidence.Why Join Us Now?You will be part of a dynamic business experiencing significant momentum, clear goals, and ample opportunities for career advancement.£18 million annual revenue, including £9 million in ARROver 1 million companies formedCertified B Corp and Carbon Neutral BusinessForecasted growth of 5x–10x over the next three yearsThe RoleWe are seeking a Front-End Developer with extensive experience in modern JavaScript frameworks and HubSpot CMS to design and maintain high-performance, responsive marketing websites. This role emphasizes developing scalable front-end solutions, integrating CMS-driven content, and collaborating with marketing and digital teams to create engaging, optimized user experiences.Key Responsibilities· Develop and maintain front-end applications utilizing JavaScript, HTML, CSS, and frameworks such as Next.js.· Design and customize templates and components within HubSpot CMS.· Integrate front-end applications with CMS-driven and CRM-based content.· Create responsive, accessible, and high-performing user interfaces using modern CSS techniques.· Work within legacy or bespoke CMS environments while adhering to best development practices.

Role Overview Vega is hiring a Front-end Engineer in London. This position focuses on building and improving web interfaces that serve a wide range of users. The work centers on creating responsive, accessible designs and collaborating with colleagues from different teams. What You Will Do Work with cross-functional teams to design and implement user interfaces Use HTML, CSS, and JavaScript to build and refine web pages Contribute to a consistent and positive user experience across Vega’s products Ensure designs adapt smoothly to different devices and screen sizes Key Skills Proficiency in HTML, CSS, and JavaScript Experience developing responsive web interfaces Ability to collaborate with team members from different disciplines This role is based in London.

About Clear Street:At Clear Street, our mission is to empower sophisticated investors with seamless access to every asset across various markets, all through a unified platform designed for speed, transparency, and scalability.We equip our clients with cutting-edge technology, tools, and services that were once exclusive to the largest financial institutions, all rebuilt on modern infrastructure. Our cloud-native, end-to-end capital markets platform not only supports investor growth today but is also revolutionizing their interactions with markets for the future.Discover more at https://clearstreet.io. The Role:As a Senior Front-end Software Engineer, you will play a pivotal role in developing our flagship product, Clear Street Studio, offering a state-of-the-art prime brokerage experience. You will confront challenging problems that require careful trade-offs to deliver clean and efficient solutions. Your expertise will elevate our standards in providing exceptional solutions that enhance user experience and maintain high service level agreements (SLAs).This position is integral to engineering the next iteration of our advanced Studio (portal) tailored for a diverse clientele, including hedge funds, traders, and portfolio managers.

Join our dynamic team at Ratio Recruitment Ltd, where innovation meets creativity! We are looking for a talented Front End Web Developer who is passionate about crafting user-friendly and visually appealing web applications. In this role, you will collaborate with designers and back-end developers to deliver seamless digital experiences.