Fullstack Engineer with Frontend Expertise

Join Our Engineering TeamAt CoreWeave, we are revolutionizing the AI landscape. Our Monolith AI Engineering Team is dedicated to constructing and enhancing the foundational platform that drives the most sophisticated engineering simulations and AI workflows. Our mission is to transform into the super-intelligent AI test lab for the engineering sector, empowe…

About AlaroAt Alaro, we're pioneering a transformative approach to legal services, establishing ourselves as an AI-native law firm from the ground up. Our mission is to leverage artificial intelligence and data to redefine how lawyers work, enabling them to focus on high-value judgment and outcomes rather than mundane tasks.The legal sector, valued at over a trillion dollars globally, has yet to fully embrace the technological advancements that have reshaped countless other industries. We understand that AI is not here to replace legal expertise; instead, it is set to revolutionize the operational frameworks that support it. As AI continues to evolve client expectations, firms willing to adapt will lead the future of legal services.Founded in April 2025, we successfully raised $2 million in pre-seed funding, followed by a $7 million seed round led by a premier US venture capital firm. Our innovative product is actively utilized by our legal team on real cases, fostering a continuous feedback loop that drives our development. With a growing roster of early clients and a dedicated engineering team, we invite you to join us at this exciting stage of our journey.Our Work CultureSwift Execution and Solid Foundations: We prioritize delivering functional products quickly, followed by enhancing and stabilizing them based on user feedback. Progress is our core objective, but quality remains essential.Autonomy and Flexibility: We value outcomes and trust our team members to manage their time effectively, taking full responsibility for their contributions.AI-Driven Approach: AI is integrated into all aspects of our operations, ensuring seamless collaboration between humans and technology.Remote-First with Global Collaboration: Our distributed team thrives on regular communication and in-person gatherings when necessary to maintain alignment.What We ProvideSignificant Ownership: Competitive compensation paired with meaningful equity, ensuring you have a real impact from the outset.Close-Knit Team Dynamics: Work alongside founders and senior engineers, directly influencing our systems, culture, and operational strategies as we expand.Access to Advanced AI Tools: We offer an unlimited budget for AI coding tools, encouraging you to harness these resources to enhance your work.Team-Building Opportunities: We organize annual company retreats in Alaro, Mallorca, and regular team meetings in our offices to foster collaboration and innovation.

Position: Contract Technical Lead - Fullstack (Java/React)Compensation: £500 per dayContract Length: 6 monthsExpected Start: Early AprilWork Arrangement: On-site 2 days per week at our City of London officeAbout Us:AND Digital is a progressive technology firm committed to expediting digital transformation and bridging the digital skills gap. Since our inception in 2014, we have partnered with organizations to create superior digital products and cultivate robust digital teams.We strive to make a significant impact in everything we do, focusing on building strong, collaborative relationships with our clients through our regional offices, known as 'Clubs', ensuring they are supported by a dedicated team close to them.Our unique model has propelled our success, reflected in our impressive organic growth since 2014. Currently, we boast a workforce of over 1,300 professionals across Clubs in the UK, Europe, and the USA, with plans for global expansion in the coming years.Join us in our mission to close the digital skills gap across the globe.Your Role:We are on the lookout for a hands-on Technical Lead, who will also serve as an Architect and Engineering Leader, to spearhead a complex modernization initiative.Your Leadership & Influence:Technology Engineering Leadership: Demonstrated success in leading intricate software engineering projects, with a talent for converting enterprise-scale challenges into opportunities.Stakeholder Management: Proficient in client-facing delivery, with the ability to translate complex architectural solutions into substantial business value.Hands-on Approach: Comfortable leading projects from the front, with a focus on technical execution and a readiness to assist teams in achieving their goals.Your Strategic Mindset:Champion of Quality: You take pride in your work, advocating for quality assurance, security, and performance to ensure our client solutions are durable and trusted.Industry Knowledge: Committed to continual learning, staying abreast of industry standards, emerging engineering patterns, and best practices.Your Technical Expertise:Leading by example, you maintain the technical acumen necessary to oversee projects from architecture through to production and operational support.Engineering Proficiency: Full-stack experience in multiple programming languages, particularly Java and React, with a comprehensive understanding of engineering methodologies including pair programming, TDD, security by design, and observability.

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 Position: Senior Software Developer in Test Location: London, UK (Hybrid: roughly one day per week in the office) Contract Type: Permanent, full-time Compensation: £70,000 - £80,000 base salary, plus 10% bonus, 10% shares, and additional benefits About Appvia Appvia delivers cloud solutions and platform engineering to help organizations modernize software systems, boost developer productivity, and adopt cloud-native practices. The team focuses on modern application development, domain-driven design, and improving delivery outcomes through strong architecture, testing, and developer experience. Appvia works with clients in complex, high-impact settings where quality, reliability, and scalability matter. The goal: help organizations ship better software, faster. What You Will Do This is a hands-on, client-facing role within the Solutions Engineering team. The main focus is to advance a large-scale modernization and AI-driven transformation initiative. The Senior Software Developer in Test (React/Java) will: Lead the shift from slow, fragile end-to-end testing to scalable integration, functional, and contract testing methods Guide teams in adopting modern testing and quality engineering practices for complex systems Introduce new tools and approaches to improve developer feedback loops and embed quality early in the software delivery lifecycle Work with greenfield initiatives within brownfield environments Report to a Principal Software Engineer and act as a senior quality engineering advocate within delivery teams Interview Process Discovery conversation with Talent Acquisition Technical interview with the Engineering Team Final interview with Leadership Security Clearance Requirements Eligibility for UK Government Security Clearance (SC) is essential. Candidates must meet the following criteria: Hold a British Passport or Indefinite Leave to Remain (ILR) Have lived in the UK for the past five years No criminal record or financial irregularities

Join our dynamic team at version1 as a Frontend Engineer, where your expertise in Java and open-source technologies will help shape the future of our digital solutions. You will collaborate with cross-functional teams to design and implement innovative front-end solutions that enhance user experience and drive engagement.

Role overview airapps seeks a React Native Engineer based in the London Metropolitan Area. The main focus is building mobile apps that offer reliable and smooth user experiences. Collaboration is central to this role, working closely with designers and backend developers to ensure each application meets client expectations and quality standards. What you will do Develop mobile applications using React Native Translate UI and UX designs from designers into working products Work with backend developers to connect APIs and services Contribute to delivering applications that match client needs and requirements

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.

At Zoopla, we adopt a hybrid working model, dedicating three days a week to our Tower Bridge office.As one of the UK’s leading property brands, Zoopla is recognized and trusted by over 91% of the population, and we are committed to winning over the remaining 9%. Our mission is to empower individuals to make informed home decisions by connecting them to personalized insights for moving, managing, or financing their homes. With over 50 million monthly visitors, Zoopla provides exclusive data and comprehensive listings on every UK property, including over 500,000 homes for sale and rent, helping users find the best agents and secure competitive mortgage deals.We are a vibrant and growing team that thrives on innovation and is eager to redefine the digital property landscape. Join us in transforming how the nation approaches home decisions.Position Overview: Full-Stack EngineerAs a Full-Stack Engineer at Zoopla, you will enhance the consumer portal experience, developing a high-performance website and various services. If you thrive in a commercially-focused organization and are passionate about core web vitals, developer experience, APIs, pipelines, personalization at the edge, or crafting delightful UIs with the latest CSS techniques, we want to hear from you.At Zoopla, we utilize a diverse array of technologies, and while we don’t expect you to be proficient in all of them, we welcome your expertise in even a few of the following:On the frontend, you will work with React, React Native, Nx, Vercel, and TypeScript. On the backend, we employ Node.js, Next.js, GraphQL (all in TypeScript), as well as Golang and Python. We are particularly seeking candidates who are skilled in React Native to enhance our mobile application experience. Our data architecture includes both SQL and NoSQL databases, and you will be supported by our data and Core Infra/Platform teams while engaging with AWS, GitHub/GitLab, CI, and increasingly serverless technologies.A flexible approach across various layers of the stack is essential for this role. If you are eager to expand your full-stack development skills, we are here to support your growth.

Join Canva as a Principal Frontend Engineer and lead the charge in developing innovative web applications that empower users worldwide! In this pivotal role, you’ll collaborate with cross-functional teams to create seamless user experiences and optimize performance.

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

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.

About Checkout.com Checkout.com builds digital payment solutions for businesses worldwide. From our London headquarters, we support clients such as eBay, ASOS, Klarna, Uber Eats, and Sony, helping them process billions of transactions each year. Our platform aims to remove friction from payments and help partners grow. With 19 offices across six continents, our team brings together a wide range of perspectives and expertise. We focus on driving change in fintech and shaping the future of payments. Lead Mobile Developer Role The Lead Mobile Developer will guide the development of Checkout.com's flagship mobile app. This role covers hands-on coding, setting technical direction, and shaping the app’s architecture. The goal: deliver a high-performance, user-focused experience that scales. This position calls for a mobile specialist who can influence technology choices and component strategies. Strong experience building mobile-first consumer applications is essential. Key Responsibilities Design and implement the first version of our mobile app using React Native, with room to adapt the tech stack as needed. Make key architectural decisions on navigation, state management, animations, and performance to support scalability and maintainability. Champion mobile user experience and performance, deciding when to use React Native or native development approaches. Work closely with backend and product teams to deliver seamless, end-to-end experiences. Define core engineering practices for mobile, covering coding standards, CI/CD, testing, and monitoring. Learn more about us at Checkout.com.

About Airwallex Airwallex builds payments and financial platforms for global businesses. Over 200,000 companies, including Brex, Rippling, Navan, Qantas, and SHEIN, use Airwallex to manage business accounts and treasury operations worldwide. Founded in Melbourne, Airwallex has grown to a team of more than 2,000 tech professionals across 26 offices. The company is valued at US$8 billion and backed by investors such as T. Rowe Price, Visa, and Mastercard. Role Overview: Frontend Engineer for Scalable Solutions (London, UK) This role focuses on building and refining frontend systems that support Airwallex’s large-scale financial products. Work from the London office as part of a diverse, global team shaping how businesses move and manage money across borders.

Quantum Systems GmbH is seeking an experienced Frontend Engineer to join the UK team in London. This position focuses on building responsive, user-centered web interfaces for real-time control and monitoring of robotic swarms and sensor platforms. The role offers the chance to shape how users interact with advanced robotics technology. What You Will Do Design, develop, and refine frontend applications for controlling and visualizing robotic swarms and sensor data. Work with backend engineers to integrate APIs and ensure smooth data exchange between systems. Build intuitive, high-performance user interfaces using modern frameworks such as React or similar tools. Translate UX/UI designs into functional, production-ready applications in close partnership with designers. Uphold code quality, scalability, and maintainability through clean coding standards and code reviews. Diagnose and improve frontend performance, especially for real-time use cases. Who We're Looking For At least 5 years of professional experience in frontend engineering. Strong background in building user interfaces for complex, data-driven applications. Proficiency with modern frontend frameworks (React or similar). Comfort working closely with backend engineers and UX/UI designers. This role is based in London, Greater London, United Kingdom.

Join Version 1 as a Lead Frontend Engineer, where you will drive innovation and lead a team of talented engineers in developing cutting-edge applications. Collaborate with cross-functional teams to enhance user experiences and improve application performance using Java and Open Source technologies.

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.

Corgi develops insurance products for tech startups, using AI to enhance underwriting and simplify coverage. With $108M in funding and a full carrier license, the company is expanding into the UK and EU. The tech stack centers on Django and Stripe, supporting frequent product releases and rapid iteration. Role overview This Frontend Engineer role is based in London. The position suits someone who prefers autonomy, moves quickly from concept to launch, and enjoys working in a startup environment. Corgi values engineers who have shipped real products, whether weekend projects, side builds, or anything with live users or measurable traffic. The company operates without a detailed roadmap, so initiative and independent execution matter most. What we look for Drive and energy to match a startup’s pace Evidence of building and shipping projects independently Ability to deliver results in hours or days, not weeks Comfort working across different tech stacks and tackling new challenges Strong opinions, paired with openness to better ideas Low ego and motivation focused on results, not titles How we work Decisions happen quickly; waiting for perfect answers is rare New products and process changes launch often, not just quarterly Shipping and iterating take priority over lengthy review cycles High intensity during launches, steady focus in between Transparency is the norm, and decisions are made openly Internal competition helps keep standards high This is a build seat, not a coast seat. Behaviors that don’t fit Office politics, avoiding responsibility, or gossip Taking direct feedback personally instead of constructively Adding unnecessary overhead instead of simplifying Missing deadlines after making commitments How to apply Share links to your GitHub, personal website, or live projects you’ve built and launched Do not send a CV Email applications to: sergio@corgi.com If you cannot show shipped work, this role is unlikely to be a match Location and compensation London-based, with on-site or hybrid options Base salary: £75,000 to £140,000 Equity included

Who Are We?Postman is the premier API platform, utilized by over 45 million developers and 500,000 organizations, including 98% of the Fortune 500. We empower developers and professionals worldwide to create an API-first ecosystem by simplifying each phase of the API lifecycle and enhancing collaboration, allowing users to build better APIs, faster.Headquartered in San Francisco, we maintain offices in Boston, New York, Austin, Tokyo, London, and Bangalore—where Postman originated. As a privately held company, we are backed by esteemed investors including Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Discover more at postman.com or connect with us on X via @getpostman.P.S: We recommend exploring The "API-First World" graphic novel to grasp our broader vision at Postman.The OpportunityThe Client Platform team is on the lookout for a Senior Frontend Engineer to elevate our UI Platform standards and enhance our frontend ecosystem. You will champion engineering excellence through refined architecture, performance enhancements, and sustainable coding practices, ensuring our platform provides outstanding experiences.Collaborating with fellow senior engineers, you will oversee various components of our UI Platform (including design systems, accessibility, internationalization, theming, etc.). This represents a unique chance to make a significant impact on the foundation that hundreds of Postman engineers and our 40+ million customers rely on daily.What You’ll DoThe Client Platform team is a global engineering unit responsible for establishing a streamlined environment for all Postmanauts to develop and deploy web applications. Our platform serves as the backbone for over 240 engineers at Postman who depend on it to launch new features and enhancements to more than 40 million users.Design and implement scalable, maintainable front-end solutions, focusing on the presentation layerDesign system and component libraryApplication shell & layoutSpecialized UI components (code editor, text editor, data grid)Global UI patternsAccessibilityInternationalization/localizationTheming/styling architecture

Join our innovative team at Upbeat Ideas UK Ltd as a Senior Ruby Developer. We are looking for an experienced developer who is passionate about building high-quality applications using Ruby on Rails. You will play a crucial role in designing, developing, and maintaining scalable web applications that enhance user experience and drive business success.The ideal candidate will have a strong background in software development, a knack for problem-solving, and the ability to work collaboratively in a dynamic environment.