Senior Full Stack / AI Engineer (Frontend Focus)

About UsLightning AI, the driving force behind PyTorch Lightning, was established in 2019. Our mission is to create a seamless, end-to-end platform that simplifies the development, training, and deployment of AI systems, allowing innovative ideas to transition smoothly from research to production.Following our merger with Voltage Park—an AI Factory and neocloud—Lightning AI merges developer-centric software with efficient, large-scale computation. Our platform provides teams with the essential tools for experimentation, training, and production inference, all while ensuring security, observability, and control.We cater to a diverse clientele, including individual researchers, startups, and major enterprises. With a global presence and offices in New York City, San Francisco, Seattle, and London, Lightning AI is supported by esteemed investors such as Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.Our Core ValuesMove Fast: We prioritize speed and precision, breaking down complex challenges into manageable tasks.Focus: We dedicate ourselves to completing one goal at a time, collaborating effectively to deliver precise features.Balance: We believe sustained performance results from adequate rest and recovery, promoting a healthy work-life balance.Craftsmanship: Innovation through excellence—every detail counts, and we take pride in honing our craft.Minimal: We embrace simplicity as a driver of innovation, focusing on what truly matters.Your RoleWe are seeking a skilled Frontend Engineer to enhance and scale the UI and frontend infrastructure of the Lightning AI platform.In this role, you will take ownership of crucial features, driving development from concept to completion while collaborating with a talented team of engineers, product managers, and designers. Your work will focus on ensuring speed, quality, and rapid iteration—from initial proof of concept to final release.With over 10,000 organizations utilizing Lightning AI, this position offers you a unique opportunity to influence how AI solutions are built and deployed in production environments.You will be part of the Growth Squad and report directly to our Director of Engineering. This hybrid role is based in our London office, requiring in-office attendance for 2 days each week.

Who We AreLightning AI is the innovative force behind PyTorch Lightning, established in 2019. We provide a comprehensive platform designed to streamline the development, training, and deployment of AI systems, effectively bridging the gap between research and production.Our merger with Voltage Park, a neocloud and AI Factory, empowers us to combine developer-centric software solutions with economical, large-scale computing capabilities. We equip teams with essential tools for experimentation, training, and production inference, ensuring built-in security, observability, and control.We cater to solo researchers, startups, and large enterprises alike, operating globally with offices in cities such as New York City, San Francisco, Seattle, and London. Our efforts are supported by notable investors including Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.What We’re Looking ForWe are seeking a skilled Backend Engineer to develop and enhance the Lightning AI platform across various components, from the frontend and CLI to API, billing, security, and integrations. You will take full ownership of key features, driving development from concept to production while collaborating with a talented team of engineers, product managers, and designers. This role offers the chance to create groundbreaking technology that will revolutionize the machine-learning ecosystem!This hybrid position is based in our London office with a requirement of 2 in-office days per week. The salary range for this role is $120,000 - $250,000.

About UsAt Lightning AI, we are the pioneers behind PyTorch Lightning, established in 2019. Our mission is to create a seamless end-to-end platform that simplifies the development, training, and deployment of AI systems, effectively bridging the gap between research and production.Following our merger with Voltage Park, an innovative neocloud and AI Factory, we deliver developer-centric software integrated with cost-efficient, large-scale computing. Our solutions empower teams with essential tools for experimentation, training, and production inference while ensuring robust security, observability, and control.We cater to a diverse clientele, including independent researchers, startups, and major enterprises. With global operations and offices located in New York City, San Francisco, Seattle, and London, we are backed by prestigious investors such as Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.

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

Frontend Engineer About OutpostAt Outpost, we're revolutionizing global commerce with our cutting-edge AI trade engine. Imagine simplifying international sales as easily as local transactions. We provide a comprehensive infrastructure that encompasses every regulation necessary for global selling. Just tell us what you're offering, and we'll guide you on how to sell it worldwide.Operating across 58+ tax jurisdictions, we can act as the Merchant of Record or Tax of Record, allowing you to transfer full liability or just the tax layer. From set-up to analysis, we manage it all, so you can focus on selling anything, anywhere, without compromise. The RoleWe are seeking a talented Frontend Engineer to craft user-friendly interfaces that simplify complex financial transactions. Collaborating closely with our engineering leadership, you'll design user experiences that drive international commerce, including merchant dashboards, payment processes, tax compliance tools, and AI-driven analytics.Your design philosophy should reflect our belief that great design involves knowing what to omit, creating an interface that feels intuitive and efficient. You'll face challenges like presenting real-time payment data, developing tax compliance solutions, and building merchant analytics tools. Additionally, you'll explore how emerging technologies can elevate our platform. What You'll GetWhile the work can be intense, the reward is significant: you'll be crafting interfaces for critical financial infrastructure managing hundreds of millions in transactions. You will have considerable influence over product and technical choices, collaborate with a small, skilled team, and refine how merchants interact with global commerce. If you're passionate about fintech design and frontend architecture, this is your opportunity. What You'll BuildModern, responsive merchant dashboardComplex financial workflows and payment interfacesTax compliance and reporting toolsTransaction monitoring and risk management interfacesAI-powered insights and advanced reporting tools

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

About the RoleWe are excited to announce an opening for a Senior Frontend Engineer who will take charge of the user interface layer of ThreatAware's dynamic platform. Your main responsibilities will include developing the dashboard, enhancing data visualization, and crafting interfaces for our innovative AI-powered features. You will be working with TypeScript using Angular and React, reporting directly to the Head of Engineering, and collaborating closely with our R&D teams to seamlessly integrate AI functionalities into our platform. If you have a passion for creating stunning interfaces, an eye for detail, and a desire to tackle complex UI challenges with significant real-world implications, this position is perfect for you.Why Join ThreatAware?At ThreatAware, we provide security teams with a comprehensive source of truth for every device and tool within their organization. With over 150 integrations, rapid deployment in under 30 minutes, and real-time visibility across entire IT infrastructures, we have earned the trust of sectors such as finance, legal, energy, and healthcare. We're on a mission to build something even more impactful. After six years of curating accurate cyber asset data, we are now integrating AI to offer new methods for security teams to analyze their data, automate workflows, and proactively manage risks before they escalate. In this role, you will design intuitive interfaces that enhance user experience.Your ResponsibilitiesTake ownership of the frontend that transforms intricate security data into clear insights.Design and develop the platform dashboard and AI workspace UI using TypeScript (Angular and React) — ensuring a data-rich, real-time experience used daily by enterprise security teams.Tackle challenging visualization problems: managing thousands of security events, device interconnections, and AI-driven insights without overwhelming users.Establish a robust component architecture, design systems, and frontend standards that evolve as the team and product expand.Collaborate closely with R&D to translate AI capabilities into user-friendly, polished interfaces.Partner with product and design teams to define and enhance the user experience, rather than just executing it.Mentor junior frontend engineers and elevate the quality of frontend development within the team.Qualifications We SeekExtensive experience with TypeScript, Angular, and React, with a deep understanding of component architecture, state management, and performance optimization.A strong aesthetic sensibility, with a commitment to creating beautiful interfaces and a keen awareness of modern design trends, paying close attention to the details that contribute to a polished product.Proven track record in building data-intensive, high-performance web applications, ideally those that involve real-time data or complex visualizations.Ability to work in a collaborative environment and effectively communicate ideas and solutions.Prior experience in mentoring and guiding junior team members is a plus.

TransPerfect is searching for a Senior Frontend Engineer to join its London team. This role centers on building and refining software products that support both internal operations and client-facing solutions. The Senior Frontend Engineer will help guide development, quality, and delivery across a range of projects. The work involves collaborating with a global team to improve user experiences and streamline complex workflows. TransPerfect’s TechOps group has supported the company’s growth for over ten years, focusing on technology and services that make processes simpler for users and clients alike. Role overview Lead and contribute to the development of frontend features for software products Oversee quality and execution throughout the product lifecycle Work closely with international colleagues to deliver scalable solutions What we look for Experience in frontend engineering at a senior level Ability to collaborate within a global, cross-functional team Interest in improving both internal and client-facing systems This position is based in London and offers the chance to contribute to a company that values innovation and practical problem-solving.

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.

Lightning AI builds tools that help researchers and organizations bring AI projects from idea to production. Known for PyTorch Lightning, the team focuses on making it easier to develop, train, and deploy AI systems. Since merging with Voltage Park, Lightning AI combines developer-focused software with scalable compute resources. The platform supports experimentation, training, and production inference, while emphasizing security and control. Offices are located in London, New York City, San Francisco, and Seattle. Investors include Coatue, Index Ventures, Bain Capital Ventures, and Firstminute. Values Move Fast: Break big challenges into achievable tasks and act quickly. Focus: Work as one team to deliver well-crafted features, concentrating on a single goal at a time. Balance: Support healthy work habits and value rest for long-term results. Craftsmanship: Aim for excellence and innovation, paying close attention to detail. Minimal: Keep solutions simple and disciplined, avoiding unnecessary complexity. Role overview This hybrid Research Engineer position is based in London. The role centers on optimizing training and inference workloads on compute accelerators and clusters, with a focus on the Lightning Thunder compiler and the PyTorch Lightning ecosystem. Work will blend deep learning research, compiler development, and large-scale system optimization. The Research Engineer will help build foundational software that improves model performance and efficiency, shaping the future of machine learning infrastructure. This position reports directly to the Tech Lead and is part of the Engineering Team. Flexible work options are available.

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, empowering our clients to "ship science, faster." We focus on advancing distributed architecture and facilitating the next wave of agentic interfaces and physical AI, providing the reliable and scalable infrastructure that the world’s leading engineering firms depend on.Your RoleWe are seeking a talented Fullstack Engineer with a Frontend Focus. You will take charge of the Monolith platform’s product surface, which offers a data-rich, workflow-centric web interface where engineers can design experiments, compare outcomes, interact with agents, and convert intricate physical test data into actionable insights. Your collaboration with Design, Product, and Backend Engineering teams will be crucial in delivering a UI and UX that is fast, intuitive, and dependable for non-ML expert engineers. Additionally, you will contribute to our Python backend services as needed.Position OverviewThis is an IC5 Fullstack Staff Engineer role with a significant emphasis on frontend development (approximately 80–90%). We are also open to exceptional candidates for the Senior Fullstack Engineer II (IC4) level who can perform at a staff-like capacity. You will be responsible for the Monolith web application, focusing on component architecture, design system evolution, performance, and user experience for complex, data-rich workflows. You will also engage with our Python services (FastAPI/Flask) to shape and integrate APIs and implement new platform capabilities, enhancing user experiences.

About Wahed Technologies Wahed Technologies is working to make finance accessible and ethical for everyone. Many traditional financial systems rely on interest (riba), which can create obstacles for those who want to manage their money and build wealth while staying true to their values. The team at Wahed is building an entirely interest-free financial ecosystem. Their products include Shariah-compliant equity ETFs, riba-free high-yield savings alternatives, and real estate investments without leverage. Team members are based in locations around the world and share a commitment to making finance more inclusive. The company is looking for people who want to tackle complex problems and help create a fairer financial future.

Join Metaview as a Product EngineerAt Metaview, we are revolutionizing the way hiring is done through Human-Computer Symbiosis — a concept that minimizes toil and maximizes efficiency in workflows. Our innovative approach leverages AI copilots to enhance productivity, ensuring that our users experience more flow-state and insight in their work processes.Founded by former Uber and Palantir engineers, our team is composed of high-performing individuals passionate about creating outstanding products that alleviate the challenges of traditional hiring. We empower thousands of users at leading companies including Quora, Robinhood, Brex, Elastic, and Replit.We are seeking a dedicated Product Engineer who is not just a coder but a visionary, passionate about crafting user-centric solutions. You will play a pivotal role in the design, development, and operational excellence of our products, working collaboratively within a small and agile team.As a Product Engineer, you will primarily focus on frontend technologies while being encouraged to explore other facets of our technology stack. Your adaptability and eagerness to learn new languages and tools will be essential as our product continues to evolve.

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.

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.

At Coram AI, we are revolutionizing video security in today's digital landscape. Our innovative cloud-native platform leverages cutting-edge computer vision and artificial intelligence to empower businesses with enhanced safety, informed decision-making, and rapid response capabilities. Experience real-time alerts, effortless clip sharing, and comprehensive visibility across multiple sites.Joining our dynamic, agile team means embracing clarity, excellence, and impactful contributions. Every team member has a voice, delivers significant work, and plays a vital role in shaping how AI can foster a safer and more interconnected world.In this role, you will be part of a pioneering team responsible for managing a sophisticated infrastructure that transcends conventional cloud setups. Beyond our robust AWS and Kubernetes configurations, we also oversee a vast array of IoT devices. We are in search of a skilled engineer who will play a crucial role in developing and maintaining our edge and cloud stack that supports our IoT product offerings, focusing on both infrastructure and the bespoke software we utilize.You will tackle intriguing challenges at the confluence of user experience, machine learning, and infrastructure, while committing to excellence, continuous learning, and delivering exceptional products in a fast-paced startup environment.

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.

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!

About Lightning AIFounded in 2019, Lightning AI is the driving force behind PyTorch Lightning. We create a comprehensive platform for the development, training, and deployment of AI systems, streamlining the journey from innovative research to impactful production.Our merger with Voltage Park, a neocloud and AI factory, enhances our offerings by integrating developer-centric software with efficient, large-scale computing resources. We provide teams with essential tools for experimentation, training, and production inference, ensuring security, observability, and control are integral to our solutions.We cater to individual researchers, startups, and established enterprises, with a global presence including offices in New York City, San Francisco, Seattle, and London. Lightning AI is supported by esteemed investors such as Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.Our ValuesMove Fast: We prioritize speed and precision, deconstructing complex challenges into manageable tasks.Focus: We tackle one objective at a time with care, working collaboratively to deliver features accurately.Balance: We believe in maintaining a healthy work-life balance, promoting sustained performance through rest and recovery.Craftsmanship: We strive for excellence and take pride in the details that contribute to our innovation.Minimal: We embrace simplicity in our innovations, focusing on what truly matters.Role OverviewWe are looking for an accomplished Research Engineer to enhance the optimization of training and inference workloads using compute accelerators and clusters, particularly through the Lightning Thunder compiler and the broader PyTorch Lightning ecosystem. This role exists at the intersection of deep learning research, compiler development, and large-scale system optimization. You will be instrumental in advancing technology that enhances model performance and efficiency, establishing essential software that will influence the entire machine learning landscape.As part of the Engineering Team, you will report to our Tech Lead. This hybrid role is based in our offices located in New York City, San Francisco, or London.