Software Engineer - AI Solutions in London

Join PhysicsX as a Senior Software Engineer specializing in our AI Workbench. In this pivotal role, you will lead the development of cutting-edge artificial intelligence solutions that empower our clients to harness the full potential of data and analytics. Your expertise will contribute to the design and implementation of scalable software architectures, en…

About UsPhysicsX is an innovative deep-tech company at the forefront of numerical physics and Formula One, dedicated to revolutionizing hardware innovation through software acceleration.We are crafting a cutting-edge AI-driven simulation software stack tailored for engineering and manufacturing in advanced industries. Our platform enables high-fidelity, multi-physics simulations via AI inference throughout the entire engineering lifecycle, unlocking unparalleled levels of optimization and automation in design, manufacturing, and operations. We empower engineers to push the boundaries of possibility, serving leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive sectors.The RoleAs part of our product team, PhysicsX is creating a platform utilized by Data Scientists and Simulation Engineers to construct, train, and deploy Deep Physics Models. The backbone of this platform is the management of vast volumes of intricate simulation data, facilitating high-fidelity multi-physics simulations through AI inference.We are seeking a Senior Frontend Software Engineer to join our dedicated team of Frontend Engineers. You will work collaboratively in a cross-functional environment, where you will have the autonomy to influence implementation decisions. You will be responsible for developing and enhancing the frontend that animates our platform — from dynamic 3D visualizations of simulation data to seamless API integrations that enable complex machine learning workflows. You will architect composable frontend structures, optimize performance for data-intensive interfaces, and ensure intuitive interactions for our engineers and scientists handling large datasets and simulation outputs.In this senior role, you will significantly shape the technical direction — authoring Technical Decision Records, mentoring junior engineers, and establishing standards that ensure our platform remains reliable, secure, and efficient. This position is perfect for a creator passionate about delivering exceptional user experiences and building robust frontend architectures.What You Will DoDevelop and improve a frontend platform that supports intricate simulation and machine learning workflows — from 3D visualizations to seamless API integrations and data-heavy interfaces.Design and implement scalable frontend architectures and component systems, including micro-frontend patterns, to facilitate maintainable development.Enhance user experience through advanced caching strategies, performance monitoring, layout optimization, and accessibility best practices.Develop and implement sophisticated state management and data flow patterns to accommodate real-time simulation data and complex user interactions.Take ownership of your work from inception to completion, ensuring high-quality results.

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.

Join Version 1 as an AI Software Engineer and be at the forefront of innovation in artificial intelligence. In this full-time role, you will work with cutting-edge technologies to develop AI-driven software solutions that enhance business operations and customer experiences.As a key member of our Digital, Data and Cloud department, you will collaborate with cross-functional teams to design, implement, and optimize AI algorithms and models. Your contributions will help shape the future of our products and services.

About UsAt Tracer, we are pioneering the development of autonomous AI agents designed specifically for production data pipelines. As an early-stage, venture-backed startup, we are supported by seasoned professionals and investors who foresee AI's transformative impact on enterprise software over the coming decade. Our tight-knit team is comprised of senior experts who are keenly focused on execution and innovation. About the RoleWe are seeking a Lead AI Software Engineer to join our London team, responsible for creating and managing the core systems that convert production alerts into actionable root cause analyses (RCAs) and corrective suggestions. While the agent handles the heavy lifting, you will ensure that human oversight remains integral to production decisions.In this role, you will serve as the primary technical authority for our systems, collaborating closely with the founders and engaging in hands-on development. You’ll Love Our Tech StackPython + LangGraph (for multi-agentic alert investigation)Rust (to ensure speed and correctness)ClickHouse (to manage high-volume events and investigation histories)AWS + Terraform (for self-building infrastructure)Next.js + TypeScript (for dynamic front-end experiences) What You’ll DoIn this pivotal role, you will oversee the systems that transform alerts into thorough investigations and RCAs. Your responsibilities will include:Designing and building the core alert, investigation, and RCA pipeline using PythonCrafting and implementing essential systems, such as:Alert ingestion and normalizationContext enrichment and correlationProblem framing outputsHypothesis orchestration engineInvestigation execution runtimeInvestigation artifacts and reportingLeading crucial architectural decisions to ensure the system is observable, auditable, and reliable from day oneCollaborating with founders to effectively deploy a select few high-value alert types before gradually expanding our capabilitiesDeveloping customer-ready integrations throughout the pipeline

Join PMG: A Leader in Marketing InnovationRecognized by Ad Age as one of the Best Places to Work for 11 consecutive years and awarded by Fast Company as a Best Workplace for Innovators since 2022, PMG stands as a global marketing services and technology company dedicated to inspiring people and brands to realize their full potential. Through our unique operating system, Alli, we integrate business strategy, creative solutions, and media insights to create transformative digital solutions and media strategies.With a diverse team of over 900 employees worldwide, we proudly partner with esteemed brands like Apple, Nike, Sephora, and many others, delivering impactful marketing campaigns across more than 85 countries.Your Role at PMGAs the Lead Software Engineer, you will be an integral part of our collaborative and innovative team. You will contribute to the development of Alli, a cloud-based suite of AI-driven tools that enhances digital marketing for some of the world’s leading brands. Last year, our platform enabled marketing campaigns that connected with over 1 billion consumers globally, achieving remarkable results for our clients.You will focus on one of Alli’s core pillars—Actions, Data, or Insights—working alongside cross-functional teams to tackle complex challenges and create scalable, AI-enhanced solutions. Your contributions will be pivotal in enhancing PMG’s platform, helping brands engage their audiences more effectively.At PMG, we are looking for innovators and problem-solvers who are ready to take on the challenges of tomorrow. Your work will not just stay in the realm of theory; it will directly impact the future of digital marketing.

Join Figma as a Software Engineer focused on developing cutting-edge AI products. In this role, you will be part of a dynamic team that drives innovation and enhances user experiences through artificial intelligence. You will collaborate with product managers and designers to build sophisticated features that empower users to create and collaborate seamlessly.

About WatershedWatershed is a premier enterprise sustainability platform utilized by leading organizations such as Airbnb, Carlyle Group, FedEx, Visa, and Dr. Martens. Our platform enables companies to effectively manage climate and ESG data, generate audit-ready metrics for both voluntary and regulatory reporting including CSRD, and facilitate substantial decarbonization efforts. We seek passionate individuals who are enthusiastic about product development, eager to contribute to a mission-driven startup, and willing to collaborate in shaping a vibrant team culture.With offices in San Francisco, New York, Denver, London, Paris, Berlin, Sydney, Mexico City, and a robust remote workforce across the US and Europe, we invite you to explore the opportunity to join our dynamic team!The RoleWe are on the lookout for a talented software engineer with a specialization in AI to become a key member of our sustainability AI reporting team. In this technical leadership role, you will assist in the creation of a cutting-edge AI tool that empowers companies to manage and report their sustainability progress. You will harness LLMs, embeddings, and various AI technologies to deliver innovative features to our customers while establishing the technical groundwork for AI at Watershed.This position requires being based in our London HQ four days a week.Your Responsibilities:Prototype, develop, and refine new product features for Watershed, empowering our customers with advanced AI tools for data extraction and report generation.Productionize and launch core technologies necessary for AI functionalities, leveraging extensive operational sustainability data.Engage with product and other AI engineering teams to define product and technical strategy.Stay informed about advancements and state-of-the-art developments in AI to assess relevance for Watershed.Write efficient, high-quality, tested, and maintainable code across our technical stack.Ideal Candidates Will Have:A minimum of 2 years of experience in building AI-powered products and 5+ years in software engineering.Proven experience in developing products utilizing LLMs, embeddings, and other machine learning technologies.Comprehensive experience with the lifecycle of building, deploying, and monitoring products that leverage LLMs, embeddings, or other machine learning technologies.

About HomeyHomey is revolutionizing the notoriously slow and stressful process of moving home in the UK. As an established yet fast-growing company, we leverage cutting-edge technology to make property transactions quicker, more transparent, and efficient for all parties involved.Discover more at Homey.co.uk.The RoleWe are not seeking years of legacy experience; instead, we are in search of smart, adaptable, and ambitious engineers. Whether you are a recent graduate, a school leaver, or just starting your coding journey, we want to hear from you.At Homey, we value the ability to rapidly build solutions over memorizing every syntax rule. We are interested in "AI-Native" engineers—those who utilize LLMs, such as Claude Code, Grok, or GitHub Copilot, to enhance their coding capabilities and deliver high-quality code swiftly.ResponsibilitiesBuild & Iterate: Develop and enhance features that significantly influence the home buying and selling process.Leverage AI: Harness modern AI coding tools and LLMs to streamline your workflow, troubleshoot complex issues, and innovate new solutions.Problem Solve: Adopt a proactive approach to tasks from day one, demonstrating a "can-do" attitude—if you face a challenge, you will seek out the solution.Collaborate: Engage closely with a dynamic team that appreciates fresh perspectives and creative problem-solving.Who You AreEarly Career: You are a recent graduate, school leaver, or junior developer eager to grow.Tech Enthusiast: You actively use AI tools like Claude Code, Grok, or Cursorto enhance your projects.High Energy: You possess a "can-do" mindset where every task is important, and no challenge is insurmountable.Curious: You have a keen interest in how technology can transform traditional industries like real estate.BenefitsJoin an established company with the innovative spirit of a startup.Receive mentorship from experienced founders who embrace modern development practices.Contribute to solving a real-world problem affecting millions.Are you ready to shape the future of property transactions? Apply now with a link to your GitHub, a project you’ve developed using AI, or a brief note on why you are the ideal candidate for Homey.

Join hyperexponential as a Lead Software EngineerAt hyperexponential, we are at the forefront of innovation, creating a groundbreaking AI-powered platform that transforms decision-making in the $7 trillion insurance industry. Our technology influences vital outcomes, from the successful launch of rockets into space to the efficient deployment of autonomous vehicles and the swift recovery of communities after disasters.For too long, insurers have relied on outdated tools to make multi-billion dollar decisions. We are revolutionizing this landscape. Our platform seamlessly integrates data, AI, and expertise, providing insurers with a rapid pathway from submission to decision, empowering them to act with agility, intelligence, and confidence.With backing from esteemed investors like a16z, Highland Europe, and Battery Ventures, we are expanding our global footprint and have earned the trust of nearly 50 of the world’s largest insurers, boasting zero churn and billions in premiums flowing through our platform.What began as a singular product in one market has swiftly evolved into a comprehensive, multi-product platform that supports every aspect of pricing and underwriting. AI is embedded in our core operations, from developing the world’s first domain-specific AI peer programmer for insurance to innovating workflows that redefine industry standards.At hyperexponential, our strength lies in our people. Here, your impact is not determined by your title or tenure, but by the challenges you embrace and the discipline you exemplify. Surrounded by a team that pushes boundaries, you will engage in the most meaningful work of your career in an environment built to thrive.If this resonates with you, we invite you to join us in shaping the future.About the hxAI TeamAt hx, AI is not an accessory; it is integral to our mission. We are transforming the insurance software landscape through generative AI. Our team merges advanced LLM technology with deep industry knowledge to tackle challenges that others overlook.Currently, we are focused on two flagship products: a powerful ingestion engine that converts unstructured insurance documents into actionable insights, and our flagship offering, an AI peer-programmer embedded in a custom IDE, revolutionizing how actuaries and underwriters model risk and make critical financial decisions.This is applied AI that delivers tangible results. As a Lead Software Engineer, you will be part of an agile, high-ownership team that drives innovation and directly influences how AI reshapes the industry.

About Checkout.com Checkout.com provides advanced payment solutions to businesses worldwide. Our platform supports online transactions for companies like eBay, ASOS, Klarna, Uber Eats, and Sony. We focus on making digital payments seamless so clients can grow their businesses while we manage the technical complexity. Headquartered in London, Checkout.com operates from 19 offices across six continents. Our teams work together to drive innovation in fintech and deliver results in a performance-oriented setting. Role Overview: Software Engineer – AI Centre of Excellence The AI Centre of Excellence at Checkout.com is looking for a Software Engineer with a strong interest in AI-driven product development. This role suits someone who enjoys building new solutions and collaborating with others to solve complex challenges. What You Will Do Develop and iterate on Generative AI solutions to support teams across the company’s product portfolio. Work closely with cross-functional groups to design AI features that improve product performance and streamline business processes. Apply customer-focused thinking to every stage of solution design and implementation. Use coding agents and other AI tools to enhance the impact of your work. Who We’re Looking For Experience building or refining AI solutions, ideally in a collaborative engineering environment. Comfort working on projects that span multiple teams and functions. An interest in fintech and a drive to improve how businesses use technology. This position is based in London.

Role Overview The Trade Desk is hiring a Staff Software Engineer to help build advanced AI solutions. This London-based role centers on designing and implementing software systems that support and improve AI-driven products. What You Will Do Design and implement software systems for AI applications Work closely with teams across disciplines to expand product capabilities Support integration of new technologies into existing products Collaboration This role involves frequent collaboration with cross-functional teams to ensure AI systems are effective and integrate smoothly with other offerings.

About LendableLendable is dedicated to creating cutting-edge technology that empowers individuals to secure credit and save money effectively. As one of the UK’s newest unicorns, our dynamic team of over 700 is driving growth in the fintech sector:Recognized as one of the fastest-growing tech companies in the UK.Achieved profitability since 2017.Supported by prominent investors, including Balderton Capital and Goldman Sachs.Highly rated by customers, boasting an impressive 4.9 rating across thousands of reviews on Trustpilot.To date, we have reimagined three major consumer finance products: loans, credit cards, and car finance. Our commitment is to deliver funds to our customers within minutes, rather than days.As we expand, we are targeting the two largest Western markets (the UK and US), where vast amounts of financial products are still managed by traditional banks with outdated systems and cumbersome processes.Join Us If You Want ToTake ownership of a broad scope of responsibilities, making impactful decisions that shape the future of Lendable from day one.Collaborate with a small team of exceptional individuals who are resourceful and innovative in solving problems and challenging the status quo.Develop top-tier technology in-house, utilizing new data sources, machine learning, and AI to automate and optimize processes.About the RoleWe are seeking a proactive AI Engineer to join our Internal Automation team at Lendable, aimed at enhancing operational efficiency across the organization.Your mission will be to empower internal teams—from Finance and Compliance to Product and QA—by creating AI-driven tools, integrations, and automated workflows. You will work closely with a compact team (4 engineers, 1 PM) focused on reducing friction, automating monotonous tasks, and allowing colleagues to dedicate more time to high-value activities.

At Elliptic, we are pioneering the development of AI-driven tools that empower compliance teams to swiftly and confidently investigate cryptocurrency transactions. Our Automation Forge team is at the forefront of this innovation, crafting backend systems and AI integrations that support Elliptic's copilot, enabling investigators to track fund flows, identify trends, and manage risk in real-time.We are seeking a dedicated Backend Software Engineer to join our team and contribute to the design and implementation of APIs, workflows, and services that facilitate these capabilities.Your Impact:As a Software Engineer within the Automation Forge team, you will play a key role in designing and delivering robust, scalable services that underpin Elliptic’s copilot and other AI-enhanced functionalities.Collaborating with product managers, frontend engineers, and your technical lead, you will transform complex blockchain data into intuitive, user-centric solutions that assist compliance teams in tracing fund flows, revealing intricate patterns, and responding to risks with agility and assurance.By working collaboratively across various disciplines, you will contribute to the development of impactful features while consistently enhancing the quality, reliability, and usability of our platform. Your efforts will be instrumental in advancing Elliptic’s mission to create safer, more transparent, and efficient cryptocurrency markets.Your Responsibilities:Design, develop, and maintain backend services and event-driven systems utilizing TypeScript and Node.js.Build APIs and workflows that seamlessly integrate AI and LLM frameworks to enhance Elliptic's copilot and other intelligent features.Optimize and query data models across both relational and NoSQL databases.Work alongside cross-functional teams to bring features from concept to production.Participate in technical design reviews, planning sessions, and code reviews to continually enhance system quality.Contribute to infrastructure and observability practices within the team, ensuring shared responsibility for the performance of services in production.Your Qualifications:3–6 years of backend engineering experience specifically with TypeScript / Node.js.Strong API design expertise — you have developed and maintained production APIs and understand how to interface with external systems.Proficiency in data modeling — comfortable designing, optimizing, and querying data across various databases.Excellent collaboration skills — able to work effectively with diverse teams and communicate technical concepts clearly.

Role Overview Writer is hiring a Senior Software Engineer to help build and improve our Enterprise AI Platform. Based in London, this role centers on designing and developing software that supports efficiency and better user experiences for a range of clients. What You Will Do Develop and maintain software for our Enterprise AI Platform Work with cross-functional teams to deliver reliable and scalable solutions Contribute ideas and technical expertise to shape the direction of AI products at Writer Collaboration This position works closely with engineers, product managers, and other teams to ensure our software meets client needs and quality standards. Your input will help guide the evolution of AI tools within the company.

About Indicium AI Indicium AI is a premier global consultancy specializing in AI solutions for the world's leading enterprises. With a proven track record across various sectors including Financial Services, Energy & Utilities, Healthcare & Life Sciences, Retail & CPG, and Manufacturing, we provide unmatched clarity, speed, and capability in delivering AI at scale. Our team of over 600 AI experts supports more than 50 enterprise clients from 5 global locations, collaborating with top-tier partners such as Anthropic, Databricks, AWS, OpenAI, and Microsoft to achieve impactful business outcomes. Overview We are looking for a talented AI Engineer to join our team, responsible for designing, building, and deploying robust production-grade AI systems that leverage large language models. This unique position merges software engineering with AI implementation, focusing on developing scalable, reliable applications instead of model training or research. As part of your role, you will utilize cutting-edge LLM technologies to create sophisticated AI systems capable of solving complex real-world challenges through multi-agent orchestration, intelligent tool integration, and efficient production workflows. Your expertise will be pivotal in crafting the orchestration layer that ensures these systems are production-ready, effectively managing failure modes, optimizing agent collaboration, and providing consistent, reliable outputs at scale. You'll blend strong software engineering fundamentals with comprehensive knowledge of LLM capabilities, limitations, and best practices for building trustworthy non-deterministic systems. Responsibilities Design and implement production AI systems that incorporate LLMs, RAG pipelines, vector databases, and agentic frameworks. Develop evaluation frameworks to assess and monitor system performance, accuracy, and reliability. Create and maintain production-grade AI applications featuring clean code, robust error handling, APIs, and data pipelines. Implement, maintain, and evaluate retrieval systems, including vector/graph databases and ingestion pipelines. Establish feedback loops and observability processes to enhance system performance continuously. Craft effective prompts and optimize for latency, cost, and quality across various model providers and configurations. Required Skills and Experience Hands-on experience building applications with LLM APIs and a deep understanding of their functionalities. Proficiency in software engineering principles and practices. Experience with production-grade system design, implementation, and optimization. Strong problem-solving skills and the ability to work collaboratively in a fast-paced environment. Familiarity with AI best practices and methodologies.

Join the Heidi Health TeamAt Heidi, we are on a mission to revolutionize healthcare with our innovative AI Care Partner, designed to assist clinicians throughout the entire care process—from documentation to effective delivery.Our goal is to double healthcare’s capacity while ensuring that care remains profoundly human. In just 18 months, Heidi has successfully reclaimed over 18 million hours for clinicians and facilitated more than 73 million patient visits. Currently, our platform supports over two million patient visits weekly across 116 countries and in more than 110 languages.Founded by healthcare professionals, Heidi unites a diverse team of clinicians, engineers, designers, and scientists, all driven by a common objective: to enhance the human connection pivotal to healthcare.With nearly $100 million in funding, we are rapidly expanding our presence in the USA, UK, Canada, and Europe, collaborating with leading healthcare systems such as the NHS, Beth Israel Lahey Health, and Monash Health.If you are ready to take on this exciting challenge, we invite you to apply!

About Checkout.com Checkout.com supports online payments for global brands including eBay, ASOS, Klarna, Uber Eats, and Sony. The company’s technology handles billions of transactions worldwide, helping businesses grow and customers pay easily and securely. Headquartered in London with 19 offices worldwide, Checkout.com brings together a diverse team focused on fintech. The company values continuous improvement and innovation, offering each team member a chance to influence the future of digital payments. Role Overview: Senior Software Engineer in AI Excellence The Senior Software Engineer will join Checkout.com’s AI Centre of Excellence in London. The role centers on integrating advanced Generative AI technologies into products and internal processes. This engineer will collaborate with teams across the company to design and build AI-driven solutions that improve both product features and business operations. Main Responsibilities Lead the adoption and integration of Generative AI technologies across Checkout.com’s platforms Mentor engineers and share knowledge to strengthen the team’s AI capabilities Establish and promote engineering best practices within the AI Centre of Excellence Work with cross-functional teams to identify opportunities for AI-driven improvements Help shape and execute the company’s AI strategy Location This position is based in London. Learn More For details about the company, visit Checkout.com.

POS-22139This position offers flexible work options: Office, Hybrid, or Remote within the UKAt HubSpot, we are dedicated to equipping businesses with state-of-the-art AI technologies, and our AI Infrastructure group plays a pivotal role in this mission. We are looking for a Staff Software Engineer who is passionate about infrastructure and improving the developer experience to join our dynamic AI Serving team. This team is responsible for managing HubSpot's end-to-end model inference and serving infrastructure, ensuring that AI models are deployed reliably, scaled appropriately, and remain cost-effective across various environments, while also serving as the cornerstone for modern Python development at HubSpot.The AI Serving team is in charge of the frameworks and libraries that facilitate synchronous, asynchronous, and offline inference, including model deployment pipelines, autoscaling, and resource management for both GPU and CPU. Our roadmap is focused on enhancing batch inference reliability and efficiency, advancing model observability, and optimizing AI infrastructure costs. Additionally, we are the custodians of essential Python libraries and tools within HubSpot.As a Staff Software Engineer on the AI Serving team, your responsibilities will include:Developing and deploying production-level code that directly enhances AI capabilities across HubSpot, serving as a crucial component for user and business impact at scale.Driving the advancement of our model serving and inference infrastructure, with an emphasis on reliability, scalability, and cost efficiency.Setting the technical direction for deploying and operating ML models at scale, influencing decisions on architecture, cost management, and developer experience.Collaborating closely with Machine Learning Engineers, Product Software Engineers, and other Infrastructure teams to streamline model deployment and serving processes.Gaining in-depth exposure to a variety of HubSpot infrastructure systems by building and maintaining core Python libraries, providing an excellent opportunity to understand HubSpot's operations in detail.Engaging with HubSpotters across the organization—from engineering and product to design, research, marketing, and sales—to gain insights into how HubSpot functions as a business.Being encouraged to bring your authentic self to work and to choose a work style and location that enables you to perform at your best, whether that be from home, in an office, or a combination of both.We are not solely seeking engineers with extensive experience; we are looking for individuals who have demonstrated unique excellence, leadership qualities, and the ability to uplift those around them.