Senior Frontend Software Engineer - Simulation Workbench

About NevisNevis is revolutionizing the financial sector with the launch of the world's pioneering AI wealth management platform. In just nine months, we have successfully amassed over $50 billion in assets under management and we project to surpass $100 billion by year-end.Supported by leading investors, we have raised a total of $40 million from prominent firms including Sequoia Capital, ICONIQ, and Ribbit. This positions Nevis as one of the most highly funded and rapidly growing Series A startups in Europe.The RoleWe are seeking a passionate Frontend Software Engineer who appreciates the artistry of interfaces and sees code as a craft. In this pivotal role, you will design and develop Nevis’ core product, an innovative AI-native wealth management platform, and bring intelligent workflows to life for financial advisors around the world.You will collaborate closely with designers and backend engineers to swiftly transform ideas into reality. If you are enthusiastic about modern web technologies, value design excellence, and are eager to deliver impactful products, you will excel in our dynamic environment.What You’ll DoWork together with designers to create visually stunning and intuitive features.Translate intricate AI and financial data into user-friendly interfaces.Write clean, well-tested, and reusable code while mentoring others in best practices.Contribute to the evolution of our design system and enhance frontend craftsmanship.Rapidly prototype, solicit feedback, and iterate on solutions.Partner with backend engineers to seamlessly integrate APIs and visualize data.Pay meticulous attention to performance, accessibility, and the finer details that users appreciate.Who You AreYou possess extensive experience with TypeScript and a deep understanding of JavaScript.You are well-versed in React and eager to leverage the latest features.You have a thoughtful approach to component design, focusing on composable APIs and clear abstractions.You have an understanding of modern web dynamics including browser performance and the elements that contribute to a responsive interface.You are adept with contemporary tooling such as Vite, SCSS, and component libraries.You are proficient in delivering features from inception to production.

Role Overview Utility Warehouse is looking for a Frontend Software Engineer to join the Lifecycle Customer team in London. This group focuses on building web applications that improve how customers interact with our services and help keep them engaged. What You Will Do Work with designers and backend developers to create clear, responsive user interfaces Build features that make our digital products easier and more enjoyable to use Contribute ideas and code that influence our web platforms and customer experience About the Team The Lifecycle Customer team supports Utility Warehouse’s goal of delivering strong value to customers. Collaboration and a focus on usability are central to how we work.

Role overview Deliveroo is looking for a Senior Frontend Software Engineer to help shape the future of its platform. This role focuses on building high-quality user experiences and working closely with teams across the company. What you will do Develop and maintain frontend features for Deliveroo’s applications Collaborate with engineers, designers, and product managers to deliver seamless user experiences Apply expertise in modern web technologies to create engaging, reliable interfaces Location This position is based at Deliveroo’s London headquarters in The River Building.

About UsPhysicsX is an innovative deep-tech enterprise rooted in numerical physics and the high-speed world of Formula One. Our mission is to propel hardware innovation at software-like speeds.We are crafting an AI-powered simulation software stack designed for engineering and manufacturing in advanced industries. Through high-fidelity, multi-physics simulation enabled by AI inference, PhysicsX paves the way for unprecedented optimization and automation in design, manufacturing, and operations, allowing engineers to transcend limits. Our clientele includes pioneers in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive.The RoleAt PhysicsX, we are developing a robust platform that empowers Data Scientists and Simulation Engineers to create, train, and deploy Deep Physics Models. The foundation of this platform hinges on processing vast amounts of intricate simulation data, facilitating high-fidelity multi-physics simulation through AI inference.We seek a Senior Frontend Software Engineer to enhance our product team. As a vital member of a small group of Frontend Engineers, you will collaborate within a cross-functional team, enjoying the autonomy to influence implementation decisions. You will build and refine the frontend that animates our platform — from dynamic 3D visualizations of simulation data to smooth API integrations driving intricate ML workflows. Your responsibilities will involve designing adaptable frontend architectures, optimizing performance for data-intensive interfaces, and ensuring user-friendly interaction for our engineers and scientists with extensive datasets and simulation outcomes.In your senior capacity, you will significantly shape technical direction — documenting Technical Decision Records, mentoring junior engineers, and establishing standards that ensure our platform remains reliable, secure, and efficient. This role is perfect for someone who thrives on creating exceptional user experiences while also designing robust frontend architectures.What You Will DoDevelop and advance a frontend platform that facilitates complex simulation and ML workflows — from 3D visualizations to seamless API integrations and data-intensive interfaces.Design and implement modular frontend architectures and component systems, incorporating micro-frontend patterns for scalable and maintainable development.Enhance user experience through advanced caching strategies, performance monitoring, layout and rendering optimization, and adherence to accessibility best practices.Create and implement sophisticated state management and data flow patterns to accommodate the demands of real-time simulation data and complex user interactions.Take ownership of your projects from start to finish — from architectural decisions to final implementation.

TransPerfect is seeking a Senior Frontend Engineer to join its London-based team. This position plays a key role in developing and maintaining software products that support global operations. The focus is on delivering high-quality, reliable solutions that drive the company’s technology forward. Role overview The Senior Frontend Engineer will work on the design, development, and execution of software products. This includes taking responsibility for the quality of the user interface and ensuring that products meet both technical and user needs. The role involves collaborating with other teams to deliver solutions that support TransPerfect’s worldwide business. About the TechOps team TechOps has supported TransPerfect’s growth for more than ten years. The team builds and maintains technology that streamlines processes for both clients and internal teams. Projects range from workflow improvements to developing scalable interfaces for the GlobalLink platform, all aimed at making complex systems easier to use. What you will do Lead frontend development for software products used across global operations Ensure the quality and reliability of user interfaces Work closely with cross-functional teams to deliver scalable solutions

Corgi builds insurance products for tech startups using AI and a modern stack. The company operates as a licensed carrier, has raised $108 million, and recently expanded into the UK and EU. The platform uses Django, integrates Stripe for payments, and features AI-powered underwriting. Corgi is growing its engineering team in London. Role overview This Frontend Software Engineer role in London focuses on building and shipping products with autonomy. The team values engineers who can take an idea from concept to live deployment without waiting for detailed roadmaps. Experience launching side projects, weekend builds, or products used by real customers is highly regarded. What makes a strong fit Motivation to work in a startup environment Proven ability to independently build and launch projects Delivers results quickly, sometimes within hours or days Comfort working across the stack and adapting to new challenges Shares clear opinions but remains open to better ideas Prioritizes outcomes and team goals over titles How the team works Decisions happen quickly; perfection is not required Products and improvements launch regularly, not just quarterly Emphasis on shipping and iterating instead of long review cycles High intensity is standard, both during launches and quieter times Decisions are made openly and transparently Internal competition encourages everyone to improve This position is for builders who want to create and deliver real products. Behaviors that will end the role quickly Engaging in office politics or gossip Taking direct feedback as personal criticism Adding unnecessary process or overhead Missing deadlines after committing to them How to apply Send links to GitHub, personal websites, live projects, or shipped products CVs are not required Email applications to: sergio@corgi.com Proof of shipped work is required Location and compensation Based in London, with on-site or hybrid options Base salary ranges from £75,000 to £140,000, plus equity options Salary depends on ability to ship, not seniority or job titles

Anduril Industries is a pioneering defense technology firm dedicated to enhancing U.S. and allied military capabilities through innovative technology. By integrating the expertise, cutting-edge technology, and business models of the most forward-thinking companies of the 21st century into the defense sector, Anduril is revolutionizing the design, development, and deployment of military systems. Our family of systems operates on Lattice OS, an AI-driven platform that transforms vast data streams into a real-time, 3D command and control center. As we navigate an era of strategic competition, Anduril is resolutely focused on delivering advanced autonomy, AI technologies, computer vision, sensor fusion, and networking solutions to the military in a fraction of the time traditionally expected.ABOUT THE JOBThe Maneuver Dominance team at Anduril is at the forefront of developing operationally relevant, multi-asset autonomy. We are committed to building the next generation of autonomous capabilities by leveraging existing Anduril platforms such as Ghost and Altius, integrating third-party platforms into our Lattice ecosystem, and innovating groundbreaking systems that will redefine the battlefield. Our team creates software services and autonomy algorithms that address some of the most challenging problems faced by our clients.As a Frontend Engineer on the Maneuver Dominance team, you will take charge of several web applications that empower operators to design, plan, execute, and review missions for diverse fleets of autonomous systems. You will craft immersive, high-performance interfaces that convert complex operational data into clear, actionable workflows, facilitating the entire mission lifecycle. Above all, our engineers embody a “Whatever It Takes” ethos—executing tasks efficiently and pragmatically while maintaining a sharp focus on mission objectives and sound engineering principles to achieve successful outcomes with precision, punctuality, and quality.

About UsPerk, formerly known as TravelPerk, is an innovative platform specializing in travel and spend management. Our mission is to eliminate the tedious manual tasks that hinder productivity, automating everything from travel bookings to expense management and invoice processing. By addressing the inefficiencies that cost organizations significant time and resources, we empower businesses to focus on what truly matters.Trusted by over 10,000 companies globally, including industry leaders like Wise, On Running, Breitling, and Fabletics, we tackle the staggering 7 hours of lost productivity each week per employee, a $1.7 trillion issue.Founded in 2015, Perk has rapidly expanded to a team of more than 1,800 talented individuals across 12 offices worldwide, with headquarters located in both London and Boston. Our blend of innovation, control, and simplicity is transforming workplace dynamics and enhancing employee satisfaction.At Perk, our culture is driven by core values such as ownership, delivering exceptional experiences, and fostering teamwork. We emphasize curiosity, purpose, and a growth mindset to unlock your full potential. Our diverse talent team hails from the travel and SaaS sectors, representing over 70 countries. If you’re passionate about making a meaningful impact and reshaping the work experience for millions, we invite you to join us.Discover more at www.perk.com.

Join our dynamic team as a Senior Frontend Engineer at AECOM, where you will be at the forefront of developing innovative web applications and user interfaces. We are looking for an enthusiastic engineer with a passion for crafting seamless and engaging digital experiences. You will collaborate with cross-functional teams to design and implement robust solutions that enhance user interaction and satisfaction.

Join Superis Labs, a pioneering force in the crypto space, as we craft a state-of-the-art perpetual futures decentralized exchange (DEX) on the Solana blockchain. With our first production MVP in progress, your contributions will shape the architecture and protocol design at the core of our platform.Backed by Ergonia, a leading crypto-native market-making firm, we leverage extensive experience in trading and development on Solana to ensure our success.As a key member of our team, you will start with a minimal core and rapidly iterate towards a fully-featured mainnet exchange. This role offers significant ownership as you build production systems with tight deadlines.Your ResponsibilitiesDevelop the primary web trading interface, including markets, order entry, positions, balances, and charts.Seamlessly integrate Solana wallet functionalities and backend services into real-time user interface systems.Implement low-latency data streaming and effective state management.Enhance frontend performance for high-frequency user interactions.Work collaboratively with designers, backend engineers, and protocol engineers on system architecture.Create tests and maintain comprehensive documentation.Take complete ownership of features from design through to production.

Why Join Socure?At Socure, we are at the forefront of establishing the identity trust infrastructure for the digital economy, ensuring the verification of 100% legitimate identities in real-time while preventing fraud before it occurs. Our mission is vast and our challenges are intricate, impacting businesses, governments, and millions of individuals worldwide every day.We seek individuals who are eager to embrace significant responsibilities. If you are someone who thrives in a fast-paced environment, thinks critically, acts with ownership, and is deeply committed to delivering precise solutions for our customers, you’ll find your place here. This is not a setting for those who prefer predictability or limited scope. If you are driven to help shape the future of identity with a team that maintains high standards, continue reading.As a Senior Frontend Engineer on our RiskOS team, you will play a crucial role in developing intuitive, high-performing, and reliable web applications that empower our users to proactively identify and mitigate risks. You will engage in every aspect of the software development lifecycle—from architectural design to implementation, testing, and production support. By leveraging modern frontend technologies and best practices, you will not only advocate for optimal solutions but also mentor fellow engineers. This role is ideal for frontend specialists who are passionate about creating design systems, enhancing user experiences, and making a considerable impact at scale.Your Key Responsibilities:Design and develop robust user interfaces based on high-fidelity designs and functional specifications of varying complexity.Collaborate closely with product managers, designers, and engineers to deliver a customer-focused product that exceeds expectations.Take ownership of features from design reviews to production deployment, ensuring high quality, usability, and performance.Develop comprehensive unit, integration, and end-to-end tests to ensure code robustness and extensive functional coverage.Translate complex technical and product challenges into manageable tasks and drive them to successful completion.

Join us at elasticstage as a Senior Frontend Engineer and play a crucial role in revolutionizing the music industry. Our innovative technology enables the production of on-demand vinyl records, providing a platform for music creators to effortlessly create and sell their music worldwide at no cost. We collaborate with top record labels, streaming services, digital providers, distributors, and renowned global artists to deliver a comprehensive solution for physical media. Our mission is to empower small and emerging artists, offering them seamless access to market their vinyl and CDs to fans through our state-of-the-art production and fulfillment centers across Europe, the USA, and Asia.The vinyl market has experienced consistent growth of over 20% annually for the past 16 years, and CDs are witnessing a resurgence for the first time in two decades. By 2030, we anticipate nearly 200 million music creators globally, with AI further accelerating this growth. Many artists aspire to have their music available on vinyl or CD for their friends, family, and fans, and our scalable on-demand technology makes this accessible without the burden of high costs or minimum orders. At elasticstage, we provide easy and affordable access to this burgeoning market.As a Senior Frontend Engineer, you will take ownership of our front-end platform, engaging in hands-on development while providing technical leadership and direction. You will collaborate closely with product, design, and backend engineering teams to deliver exceptional user experiences across our e-commerce platform, creator tools, and operational systems.Join us and contribute to scaling a dynamic, high-profile disruptor in the music industry!

The Opportunity:We are seeking talented and motivated software engineers who take pride in their craft to join our Engineering team in London. As a successful candidate, you will collaborate with a cross-functional team that includes product managers and designers to deliver impactful solutions for both internal and external stakeholders. You will take ownership of the challenges your team tackles, ensuring that we maintain a high standard of quality in all our releases while being part of a high-performing international development team. If you are passionate about solving problems with code and desire to work with exceptional colleagues in a dynamic environment, this role is an excellent fit for you. Your Role:Design Solutions: Formulate optimal technical solutions to business challenges, contributing to an architectural vision aimed at positioning us as the world’s leading research platform.Ship Working Code: Primarily working with React on the frontend and Kotlin microservices with Postgres on the backend, along with legacy services in Ruby on Rails. We continually explore new technologies to enhance our stack.Deploy and Iterate: We frequently release updates to our users, utilizing CircleCI and Spinnaker for CI/CD, and swiftly gather feedback to inform subsequent iterations.Build Your Competency: Accelerate your learning by developing cutting-edge technology alongside experienced colleagues in a high-performance atmosphere. Engineers have access to our Learning & Development budget to enhance specific technical skills.Maintenance and Troubleshooting: Diligently monitor our services, identifying issues before users are impacted, diagnosing root causes, and deploying effective fixes. Who You Are:You likely hold a degree in a STEM field, but we welcome candidates who have honed their skills through alternative paths.Relevant Experience: You have worked at a similar level in a well-established Engineering team and are eager to elevate your career. We seek individuals with exceptional potential.Technical Proficiency: Frontend expertise with at least one framework, preferably React.Proven Impact: You have a track record of making significant contributions in your previous roles.

Location: London Start date: Immediate The Role: We are seeking exceptionally skilled and motivated software engineers who take pride in their craft to enhance our Engineering team based in London. As a successful candidate, you will collaborate within a cross-functional team that includes product managers and designers, working closely with the wider business to deliver effective code that addresses real-world challenges for both internal and external clients. You will take charge of the services overseen by your team, ensuring their development aligns with the overarching AlphaSights Engineering strategy, while also mentoring junior engineers. If you are passionate about problem-solving through coding and aspire to work alongside outstanding colleagues in a high-achievement environment, this position is ideal for you. What You’ll Do: Design Solutions: Define optimal technical solutions to business problems, contributing to a scalable architectural vision that aims to become the world's leading research platform. Ship Working Code: Our primary tech stack consists of React for the frontend and Kotlin microservices with Postgres for the backend, alongside some legacy services built in Ruby on Rails. We continually assess new technologies that could enhance our stack. Deploy and Iterate: We release updates frequently to our customers, utilizing CircleCI and Spinnaker for CI/CD, gathering feedback promptly to inform subsequent iterations. Build Your Competency: You will rapidly advance your skills by developing market-leading technology alongside experienced colleagues in a high-performance environment. Engineers can also utilize our L&D budget to accelerate their development of specific technical competencies. Maintenance and Troubleshooting: Diligently monitor our services to catch errors proactively, diagnose root causes, and deploy fixes before users are affected. Who You Are: You likely hold a degree in a STEM subject, but we are also open to candidates who have honed their skills through alternative pathways. Experience: Proven experience at a similar level within a mature Engineering team, with aspirations to elevate your career. We seek individuals with outstanding potential. Technical Expertise: Extensive knowledge in frontend engineering, including designing, building, and maintaining robust web applications.

Join our passionate team at Ledger, where we are dedicated to redefining the landscape of digital ownership. Our mission is to empower users, creators, and enterprises to take control of their value with unparalleled freedom through technology that is accessible to everyone. We thrive on innovation, fostering a culture of curiosity and problem-solving that encourages every team member to challenge norms and develop groundbreaking solutions. At Ledger, we are committed to making self-custody accessible, giving individuals the keys to their financial futures. If you’re eager to make a significant impact, we invite you to become part of our journey.As the leading global platform for digital assets and Web3, Ledger secures over 20% of the world’s crypto assets through our advanced hardware wallets, with more than 7.5 million units sold across 200 countries. With headquarters in Paris and offices in various locations including London, we employ around 600 skilled professionals dedicated to developing secure products and services that allow individuals and businesses to manage their crypto assets with confidence.The TeamYou will be an integral part of the E-commerce Engineering team, which is responsible for the entire customer experience on ledger.com. This team oversees the customer journey from discovery to checkout, utilizing a modern technology stack (Next.js, Shopify, Contentful, Vercel) to deliver high-performance, conversion-optimized experiences.In our dynamic, product-focused environment, we prioritize frequent deliveries and continuous optimization in performance, SEO, and conversion rates.What You’ll Be DoingAs a Senior Frontend Engineer, you will play a pivotal role in shaping the web experiences that millions of customers rely on. This hands-on position involves significant ownership, where you will lead complex projects from conception through to production, influence technical direction, and uplift team standards through mentorship.Your responsibilities will include:End-to-End Project OwnershipLead the development of impactful features from inception to deployment.

blp-digital is looking for a Senior Frontend Engineer to work onsite in London. This role centers on building modern web applications, working closely with both designers and backend developers to deliver user experiences that are intuitive and reliable. Key responsibilities Lead the frontend development of both new and existing web applications Collaborate with designers to turn concepts into polished, effective interfaces Work with backend engineers to ensure seamless integration between frontend and backend systems Work location This position requires working onsite at the London office.

Senior Frontend Engineer - Elevate User Experiences Are you a seasoned Frontend Engineer looking to make a significant impact? Join our dynamic and agile delivery team at ClearScore, where we are dedicated to crafting innovative experiences for our users through the latest technologies. If you thrive in a high-performance, entrepreneurial environment that celebrates the art of developing cutting-edge products and tackling complex challenges, we want to hear from you! As a valued member of our established cross-functional squad, you will focus on advancing our design system, enhancing our logged-out website, and exploring other groundbreaking technologies. We foster a culture of continuous improvement and creativity, inviting new team members to share their ideas and methodologies. Bring your expertise, and we'll share our knowledge in a collaborative and enjoyable atmosphere. At ClearScore, our world-class engineers are pivotal in fulfilling our mission to enrich the financial lives of millions. To learn more about our technology stack, visit our 2026 Tech Radar. Discover our work culture through our Behavioural Principles and Engineering Principles. Explore additional insights on our Tech Blogs on Medium. Your Responsibilities: Design, develop, and maintain full-stack solutions using Node.js and TypeScript, delivering data-driven user interfaces and backend services. Create intuitive client UX utilizing design systems and server-driven UI frameworks. Optimize and scale databases for large-scale applications, employing SQL, PostgreSQL, and indexing strategies to ensure performance and maintainability. Collaborate closely with skilled colleagues to implement, monitor, and optimize real-time data pipelines with Kafka, ensuring robust message handling and distributed system performance to enhance your features. Take ownership of end-to-end performance optimization, both client-side and server-side. Lead the deployment and maintenance of production-grade code and databases across multiple global markets. Monitor post-release performance, utilizing tools for reliability and system health. Engage in an Agile environment, mentoring team members across various specializations and fostering a culture of learning and continuous improvement.

About Kernel Kernel builds AI-powered data solutions for RevOps teams working with CRM systems. The company is supported by $14M in Series A funding from investors linked to Plaid, OpenAI, and Slack. Kernel aims to provide an AI-first alternative to established data providers like Dun & Bradstreet. Teams at organizations such as Navan, Gong, Mistral, and AlphaSense use Kernel's products to streamline and improve their operations. The engineering team manages around 30 billion tokens daily and runs more than 1.8 million agents, all on a streamlined architecture with a single database and queue. For scale, Kernel's queue processes about 365 million transactions each day, comparable to Visa's daily volume. All of this is achieved by a small, focused team. Role Overview Kernel is looking for a Frontend Product Engineer in London. This is a T-shaped role with a strong emphasis on frontend work. The position involves working closely with both product and engineering to design and ship user-focused features, maintain infrastructure, and support Kernel's growth. While deep design skills are not required, a solid grasp of UI/UX principles and a sharp eye for detail matter. The team values proactive, adaptable engineers who communicate clearly. With a lean structure, engineers are trusted to make decisions and ship code independently. This role offers the chance to help drive Kernel's growth from $3M to $30M ARR, taking ownership of projects from start to finish and shaping product and infrastructure decisions. What You'll Do Design and build product features that improve user workflows Work with design, product, and engineering to deliver strong user experiences Write and maintain clean, scalable code across the stack Support the performance and reliability of large-scale data operations Automate workflows to boost developer efficiency and reduce manual steps Integrate with CRMs and external APIs Join roadmap discussions and contribute technical insights What You'll Bring At least 6 years of experience in software or product engineering Strong skills with frontend technologies and frameworks

LocationLondon, UK - Hybrid – 3 days in office - Office location: Central London (Victoria area)About the RoleJoin our dynamic team as a Mobile/Frontend Engineer where you will leverage your expertise in React Native and TypeScript to enhance and develop a tablet-based Point of Sale (POS) application.This position is perfectly suited for individuals with a strong mobile development background grounded in frontend technologies. Most of our codebase is built using React Native, along with a bit of Next.js for our web interfaces.You will focus on elevating UI quality, optimizing performance, and crafting new features in a fast-paced startup setting where AI technology is an integral part of our development process.Key ResponsibilitiesDevelop and maintain features for our tablet-based POS applicationUtilize React Native and TypeScript extensivelyEnhance UI/UX quality and streamline the existing codebaseRefactor and optimize frontend code for improved performance and reliabilityCollaborate with product engineers and backend developersRapidly deliver new features while ensuring high standards of code qualityEffectively utilize AI-assisted development toolsRequired Experience & SkillsProven experience with React Native and TypeScriptBackground in frontend engineering (JavaScript, React ecosystem)Experience in developing mobile or tablet applications (excluding native Swift/Kotlin)Ability to enhance and maintain existing codebasesExperience in startup or fast-paced settingsAdept at rapidly iterating on product featuresPreferred QualificationsFamiliarity with Next.jsExperience in POS, payment systems, or fintech productsUnderstanding of AI-driven development workflowsExperience collaborating with product or design teamsWhat We ValueWe seek front-end engineers who are passionate about their craft and committed to delivering exceptional user experiences.