Senior AI Engineer

Join Our Team as a Senior Product Engineer (AI)At Plain, we're revolutionizing customer support for the next generation of B2B enterprises. Our goal is to create the fastest and most powerful platform that enables businesses to transition from reactive support methods to building genuine relationships with their customers.Renowned companies like Cursor, Raycast, and Granola rely on Plain to centralize customer interactions, enhance team collaboration, and elevate workflows through advanced AI technology.The landscape of B2B customer support is evolving dramatically, with AI paving the way for innovative customer engagement strategies. Support has shifted from being a disconnected, slow process to a cohesive, company-wide initiative that spans channels like Slack, Discord, and beyond. The traditional methods just can't keep up anymore.This position is hybrid, requiring 3 days a week in our London office.Your RolePlain is in an extraordinary position, already powering support solutions for high-growth businesses with our incredibly fast and scalable platform. AI has been integral to our offering from day one, and now we’re committed to deepening its impact across all facets of modern customer support.We are on the lookout for a Senior Product Engineer with a passion for customer success to elevate our AI initiatives. In this role, you will develop the infrastructure necessary for rapid, secure, and confident delivery of AI features, taking ownership of challenges from inception to execution and playing a pivotal role in crafting a category-defining product.In this role, you will:Take full ownership of AI functionalities, including agents, assistants, insights, and beyond—from concept through to production.Design and implement backend services that support AI integrations and data pipelines.Create robust APIs and abstractions for internal AI applications.Enhance system scalability through caching, optimization, and processing patterns.Contribute to the evolution of our AI infrastructure, including architecture, evaluation, and iteration pipelines.Tackle complex challenges surrounding AI accuracy, reliability, and quality using rigorous quantitative methods.Represent our work externally through writing, speaking engagements, and connections with the broader AI community.This Role is Ideal for You If You...Are an experienced backend engineer with a proven track record of shipping AI products in the era of OpenAI and Anthropic, particularly in text and data-intensive AI applications.Possess a deep understanding of AI technologies and their applications in real-world customer support scenarios.

Join Our Team as a Senior Product EngineerAt Slingshot AI, we are pioneers in creating innovative AI solutions for mental health. Our flagship product, Ash, is designed to make mental health support more accessible, empowering individuals to transform their lives. We are committed to building a diverse and talented team that thrives on autonomy, flexibility, and collaboration.As a Senior Product Engineer, you will be at the forefront of enhancing Ash, working within a dynamic product team that combines product management, design, and engineering expertise, along with specialists in machine learning and AI. Your contributions will encompass the full development stack, from implementing engaging new features to creating automated processes that enhance the efficiency and effectiveness of our product.We are looking for passionate builders who are eager to take ownership of their work and are dedicated to delivering value to our users. You will be joining a small, highly skilled team where your insights and creativity will shape the future of Ash.Our technology stack includes Dart/Flutter for mobile applications, Kotlin for backend services, Python for machine learning, and Next.js/TypeScript for internal tools, with Rust used for low-level media streaming. While expertise in all these technologies is not mandatory, a willingness to learn and adapt is essential.

Aircall develops an AI-powered customer communications platform that serves over 22,000 companies worldwide. The platform brings together voice, SMS, WhatsApp, and AI features to help teams increase revenue, resolve issues quickly, and scale customer-facing operations. With headquarters in Paris and offices in London and other major cities, Aircall continues to expand its reach and invest in AI innovation. The company values customer satisfaction, data-driven decisions, and meaningful results. Ownership, ongoing learning, and collaboration are central to the team culture. People who thrive at Aircall appreciate making a tangible impact within a supportive, team-focused setting. Role overview The AI Productivity Engineer joins the Engineering Productivity (EngProd) team in the London office. The focus is on building and deploying AI-powered tools that streamline engineering workflows. Day-to-day work includes reducing friction, automating repetitive engineering tasks, and integrating intelligent solutions into routine activities. This position is not research-oriented or customer-facing. Instead, the emphasis is on delivering practical, production-ready AI systems that engineers use internally. The tools and systems developed will directly improve engineering efficiency across the organization. This role fits someone who enjoys creating reliable systems that others depend on, with a focus on long-term value over following short-lived trends.

Senior Product EngineerAbout the PositionCaribou is seeking a talented and experienced Senior Product Engineer to elevate our product team. This key role demands a full-stack engineer with a strong product intuition and proven history of transforming innovative ideas into successful products from inception to launch.As we harness the latest in AI and LLM technology, your expertise in these areas will be crucial. You should be well-versed in contemporary techniques and capable of building independently, even in the absence of a dedicated design team.Your primary responsibility will be to translate raw business objectives into impactful customer-facing features, ensuring a top-tier customer experience. You will guide the entire product development lifecycle, from understanding real user issues to crafting thoughtful solutions and implementing them across our technology stack.This position intersects engineering, product development, AI, and design. Collaborating closely with founders and cross-functional teams, you will tackle ambiguous challenges and deliver elegant, scalable solutions that enhance our customer experience.Your ResponsibilitiesLead the full-stack development of new product features from initial concept through to production deployment.Engage in product discovery: analyze customer feedback, map user workflows, identify opportunities, and prioritize feature development.Utilize AI and LLMs to enhance product capabilities, streamline development processes, and innovate complex tax workflows.Work alongside the tax team to deeply understand user needs and translate them into actionable product enhancements.Make informed decisions regarding infrastructure and architecture to ensure high-performance, reliable feature delivery.Enhance code quality by writing maintainable code, contributing to design systems, and refining engineering practices.Job Requirements5+ years of experience as a full-stack or product-focused engineer in a web application startup environment.Strong technical proficiency in modern front-end frameworks and back-end technologies.

About UsJoin Luminance, a trailblazer in Legal-Grade™ AI solutions for the enterprise sector. Supported by esteemed venture capitalists and recognized in the Forbes AI 50 list of ‘Most Promising Private AI Companies in the World’ as well as Inc. 5000’s ‘Fastest Growing Companies in America’, we are transforming the legal industry on a global scale.We are on the lookout for a dynamic AI Product Engineer who is ready to take full ownership of impactful AI tools. This role transcends conventional development; we seek a visionary builder and problem-solver who can turn vague concepts into essential software applications. While a formal computer science degree is not mandatory, we value self-motivated individuals adept at leveraging cutting-edge AI tools to deliver results swiftly.Key Responsibilities Design, prototype, and deploy autonomous AI systems that effectively address strategic business challenges. Rapidly convert abstract requirements into functional prototypes, and lead the push to production. Troubleshoot and resolve complex issues throughout the technology stack, encompassing AI model behavior, middleware, and deployment configurations. Present your work within the company and contribute to our internal narratives around innovation. Create comprehensive documentation and rollout plans for new tools, ensuring user adoption. Continuously assess new AI models, frameworks, and coding tools to enhance efficiency and quality. Requirements Proven ability to develop and deliver AI-enabled products or prototypes (whether through professional experience, academic pursuits, or self-taught endeavors). Exceptional problem-solving abilities: capable of transforming ambiguous challenges into functional code and structured workflows. Extensive technical knowledge: proficient with Python, APIs, full-stack frameworks, and JSON. Familiarity with Large Language Models (LLMs): understanding their capabilities and limitations, with experience integrating them into practical systems. Outstanding communication skills: able to collaborate effectively with executives, stakeholders, and non-technical users. Curiosity, determination, and creativity: eager to experiment, iterate, and navigate challenges until successful. Why Choose Luminance? Work on the forefront of applied AI in the legal field, one of the most impactful sectors globally. Collaborate with a distinguished, multidisciplinary team that encompasses law, AI research, and product development. Experience the freedom of a startup culture backed by prominent international venture capitalists. Benefits Central London office location. Pension scheme with Aegon, RetireReady. Health insurance with BUPA - all employees are eligible for enrollment for themselves and dependents from Day 1 at Luminance. Life Insurance.

At Intercom, we are redefining customer service with our AI-driven solutions. Our mission is to empower businesses to deliver exceptional customer experiences through our advanced AI agent, Fin. This state-of-the-art technology enables companies to provide seamless, always-on customer support, enhancing their customer interactions significantly. Fin can also integrate with our Helpdesk platform, forming a comprehensive solution known as the Intercom Customer Service Suite. This suite offers AI-enhanced support for complex inquiries that necessitate human agent involvement.Founded in 2011 and trusted by nearly 30,000 businesses worldwide, Intercom is setting the benchmark for customer service innovation. We adhere to our core values, which drive us to push boundaries, work with urgency, and consistently deliver unparalleled value to our clientele.What is the opportunity?As a Senior Product Engineer at Intercom, you will be pivotal in addressing real customer challenges through the intelligent application of your technical expertise. You will collaborate within a multidisciplinary product team, contributing to both back-end and front-end development while working closely with designers, product managers, researchers, and data analysts.We are tackling exciting scaling challenges and building a robust platform where your skills will be crucial in areas such as developing a beautiful messenger composer, rule matching, deliverability, security, application availability, and machine learning, among others.What will you be doing?As an experienced engineer, you will:Develop technical plans and contribute to our technical architecture, scaling our products to serve millions of users daily.Write Ruby code that integrates various AWS, infrastructure, platform, and SaaS technologies, forming the backbone of Intercom's backend.Deploy changes to production and ensure high-quality delivery.

Join Gizmo, a dynamic AI startup dedicated to revolutionizing learning by making it accessible and enjoyable for everyone. Our innovative platform harnesses the power of gamification and social mechanics to create engaging educational experiences.With a rapidly growing user base of over 1.7 million monthly active users and an impressive $5M in annual recurring revenue, we are one of the UK’s fastest-growing startups. Recently, we secured $22M in Series A funding from leading investors to propel our mission of helping 1 billion people learn.Your RoleWe are on the lookout for a talented and experienced Staff Product Engineer with a focus on AI to enhance the core intelligence of our platform. As part of our team, you will report directly to the CEO and Co-Founder, working within our TypeScript codebase to develop AI-powered features utilized by thousands of students each day, including study material generation, quizzes, automated grading, and content ingestion.This role is hands-on and not focused on machine learning research; instead, it emphasizes practical product engineering aimed at designing and refining AI systems that have a real-world impact.If you are passionate about developing AI solutions that are integral to a high-impact product, this position offers a unique opportunity to make a difference at scale.Key ResponsibilitiesDeveloping AI-Driven Product FeaturesDesign and implement AI-enhanced user features within our TypeScript framework.Manage AI feature development from conception through production and continuous improvement.Collaborate with design and product teams to address real learning challenges with comprehensive AI solutions.Produce clean, maintainable, and production-ready code.Contribute to architectural strategies across backend and AI systems.Enhance user experiences centered around AI outputs, including feedback and refinement processes.Maintaining and Optimizing Production AI SystemsYou will oversee AI systems that are already operational and utilized daily, including:Generation of study materials.Creation of quiz questions.Automated grading and feedback systems.Structured content ingestion pipelines.Your tasks will include:Refining production AI workflows.Designing and evolving prompts, focusing on effective prompt engineering and multi-step workflows.Building structured model pipelines rather than simple integrations.Integrating model upgrades directly into our TypeScript backend.Developing innovative AI systems to tackle new product challenges.Prototyping and streamlining new model-driven functionalities.Establishing Evaluation and Quality StandardsYou will:Define excellence across various AI applications.Create internal evaluation frameworks.Develop clear metrics for quality, accuracy, and overall usefulness.

Intercom is a pioneering AI Customer Service company dedicated to enhancing business-customer interactions. Our flagship AI agent, Fin, represents the forefront of customer service technology, enabling businesses to provide uninterrupted and exceptional support. By integrating with our Helpdesk, it evolves into the comprehensive Intercom Customer Service Suite, designed to tackle complex inquiries that necessitate human intervention.Since our inception in 2011, we have garnered the trust of nearly 30,000 businesses worldwide, establishing ourselves as leaders in the customer service sector. Rooted in our core values, we relentlessly pursue innovation, operate with agility, and consistently deliver outstanding value to our clients.What’s the Opportunity?As a Senior Product Engineer at Intercom, you will leverage your technical expertise to tackle real-world customer challenges. You will be integrated into one of our dynamic product teams, collaborating closely with designers, product managers, researchers, and data analysts to develop both back-end and front-end systems.Your role will involve addressing the exciting challenges of scaling our platform, where your skills will be key in enhancing various aspects, including the messenger composer, rule matching, deliverability, security, app availability, and machine learning, among others.What Will I Be Doing?As a Senior Engineer, your responsibilities will include:Formulating technical plans and contributing to the architecture of our products as we scale to accommodate millions of users daily.Writing Ruby code that integrates various AWS, infrastructure, platform, and SaaS technologies forming the backbone of Intercom’s back-end.Deploying changes to production seamlessly and ensuring high performance and reliability.

About UsAt Supermodular AI, we empower enterprises to embark on their AI transformation journeys. Our philosophy centers around executing strategies that drive real change.While many organizations recognize the transformative potential of AI, they often face hurdles in actualizing that vision into tangible operational advancements. The core challenge typically lies not in the technology itself, but in integrating AI into existing complex systems, workflows, and engineering practices developed over time. We assert that true AI transformation cannot be relegated to strategy documents alone; it is through the practical building, deployment, and operation of AI systems within organizations that genuine strategies take shape.Thus, we collaborate closely with enterprise IT and software teams to architect and deploy AI systems in real-world settings. This involves equipping engineering teams to adopt fundamentally new methodologies through AI-native development practices, frameworks, and technical resources that redefine software building and operational approaches. We also create bespoke AI systems to facilitate challenging modernization or harmonization initiatives where conventional methods have faltered.Our team boasts a strong history of developing impactful AI systems and scaling engineering capabilities within intricate enterprises. If you're passionate about addressing complex enterprise challenges and transforming ambitious concepts into operational systems, you’ll find a supportive environment at Supermodular AI.Your ResponsibilitiesIn your role as a Senior AI Product Manager at Supermodular AI, you will engage at the crossroads of problem identification, AI system design, and hands-on development within enterprise AI transformation projects.This position diverges significantly from conventional product management; your focus will be on crafting and shaping AI systems rather than managing backlogs or coordinating deliveries.You will be responsible for designing and executing the initial operational versions of AI systems, agentic workflows, LLM-based solutions, orchestration logic, and evaluation loops within authentic enterprise environments. Your work will rapidly transition from problem identification to system design and ultimately to practical implementation, leveraging real data and navigating actual constraints.Collaboration will be key, as you will team up with Deployment Strategists and Forward Deployed Software Engineers, forming a core execution group dedicated to defining challenges, crafting solutions, and delivering reliable systems that function seamlessly in production.You will directly interact with enterprise executives, engineers, and operators to gain insights into their current systems and workflows, pinpoint areas where AI can enhance efficiency, and transform these opportunities into functional systems.

About the Role As a Staff AI Engineer at bluefishai, you will take on a pivotal role as a technical leader, driving the development of our LLM-powered products that are at the cutting edge of marketing and advertising technology. You will be instrumental in making architectural decisions, establishing quality benchmarks, and spearheading collaborative initiatives across multiple teams that yield tangible results. This position will empower you to shape the vision and execution of our data platform and LLM-driven products. You will oversee critical architectural aspects related to data pipelines, model integration, deployment, and evaluation. Your expertise will turn high-level product and business objectives into robust, scalable data solutions that provide measurable benefits for our Fortune 500 clients. This role encompasses both data backend and ML engineering, ensuring the reliability and cost-effectiveness of our pipelines while enhancing the performance of LLM-enabled features. You will elevate data literacy within the department through crafting and collaboration. Your responsibilities will include ensuring the health, cost management, and continuous improvement of key data products and platforms, working closely with full-stack engineers, product managers, designers, and devops to deliver reliable solutions that our customers can depend on. This is an exciting opportunity to influence the future of AI technologies and contribute significantly to impactful real-world applications. While this role is associated with our London office, we embrace flexibility with hybrid or remote work arrangements within the UK.

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.

Role overview ASOS Plc seeks a Senior AI Engineer based in London to create AI-driven solutions that enhance customer interactions with the ASOS platform. This position collaborates with teams across the company to address practical challenges through machine learning and artificial intelligence. What you will do Design, build, and deploy AI models that align with ASOS's business objectives Partner with engineering, product, and data teams to deliver integrated solutions Use advanced machine learning and AI techniques to improve both customer experience and operational processes

At Plain, we are revolutionizing customer support for the modern B2B landscape. Our aim is to develop the most rapid and powerful platform, enabling companies to transcend traditional reactive support and foster genuine customer relationships.Renowned companies such as Cursor, Raycast, and Granola trust Plain to consolidate their customer interactions, enhance team collaboration, and elevate their workflows through the integration of AI.The B2B customer support sector is experiencing a monumental transformation, with AI redefining customer engagement. Support is evolving from a siloed function to a collaborative effort across platforms like Slack, Discord, and other communication channels. The outdated methods of slow, manual, and fragmented processes are no longer viable.This position offers a hybrid work model, requiring 3 days a week in our London office.Key ResponsibilitiesWorking at Plain involves more than just managing tasks; it encompasses owning and addressing challenges comprehensively—from infrastructure decisions to feature design and user interface elements.In this role, you will:Influence Product Strategy: Contribute to the technical architecture and product roadmap, effectively balancing customer insights with long-term product sustainability.Deliver Features from Concept to Launch: Define, develop, and deploy product features that directly address customer needs. Teams include:Core Product Team: Manage all customer-facing channels (Slack, Discord, Email, etc.), core data models, and customer requests while balancing rapid execution with foundational integrity.Developer Infrastructure Team: Create the essential tools that empower every engineer at Plain to effectively deliver and maintain the product, with a focus on optimizing team speed and minimizing obstacles.Enhance Backend Architecture: Tackle some of our most intricate challenges, from data modeling to high-performance reporting, establishing standards for our development processes.Optimize Developer Experience: Ensure that Plain is not only user-friendly but also developer-friendly, from data pipelines to APIs.

Role overview SmartRecruiters seeks a Senior AI Engineer based in the United Kingdom. The position centers on building and refining artificial intelligence models to enhance product capabilities and support overall business objectives. What you will do Design, implement, and optimize AI models for practical use cases Collaborate with teams across the company to integrate AI solutions into existing products Apply technical expertise to projects that influence the direction of our technology Requirements Substantial experience in artificial intelligence and machine learning Proven ability to design and deploy AI models Comfort working with cross-functional teams

Role overview The Senior Applied AI Engineer at Taktile will play a central part in building and refining AI-driven solutions for the company's product suite. This position requires direct involvement with AI models and regular collaboration with colleagues across different teams. The work will help guide both the technical and product direction at Taktile. What you will do Design, develop, and implement applied AI models to enhance Taktile’s products. Collaborate with engineering, product, and other teams to take AI features from initial idea to production deployment. Participate in shaping product and AI strategies through active contribution to team discussions and decision-making. Location This is an in-office role based at Taktile’s London location.

JetBrains is hiring a Senior Product Manager focused on AI Analytics. This position centers on guiding projects that use artificial intelligence to improve user experience and support product growth. Role overview The Senior Product Manager will work closely with teams from different disciplines to shape and deliver AI-driven features. The goal is to ensure JetBrains products continue to set high standards in the industry. Key responsibilities Lead projects that apply AI analytics to enhance product capabilities Collaborate with engineering, design, and other teams to define and execute strategy Drive initiatives that improve user experience and support business growth Location This role is open in multiple cities, including Amsterdam, Belgrade, Berlin, Limassol, London, Madrid, Munich, Paphos, Prague, Warsaw, and Yerevan.

We have successfully secured $60 million in Series B funding at a valuation of $685 million - read about it here! About LawhiveAt Lawhive, our mission is to democratize access to legal services for everyone. The legal industry has long been entrenched in outdated technology and processes; we are changing that by completely reinventing the model with our proprietary AI-driven operating system at its core.As a regulated law firm equipped with an AI-native platform, we are here to enhance legal expertise and transform how law is practiced, leading to outstanding results for both our clients and our legal professionals.Lawhive Labs is the embodiment of our vision, functioning as our innovative frontier lab that merges the best in engineering, design, AI, and legal expertise from across the globe to construct the future of law.We are supported by top-tier investors, including Google Ventures, Balderton Capital, and TQ Ventures, and in early 2026, we secured a $60 million Series B funding round aimed at driving our international expansion and growing our talented team.Headquartered in London, we successfully launched our services in the US in 2025—and this is just the beginning.Engineering at LawhiveOur engineering team, consisting of 40 skilled engineers and researchers, is responsible for architecting, developing, and managing Lawhive’s platform, which is trusted by hundreds of legal professionals daily across the UK, US, and beyond.We have numerous challenges ahead and many yet to discover! In the upcoming year, our focus will be on:Innovating the user experience for lawyers' AI interactions, moving beyond traditional chat interfaces to create a new paradigm for human-machine interaction.Incorporating modularity and country independence into our platform. Following our recent expansion into the US, we aim to establish the world’s first global consumer law firm.Delivering full-stack AI-native legal services: we are not just developing software; we are an AI-native law firm.The RoleIn this role, you will be instrumental in advancing Lawhive’s platform, positively impacting our clients and driving Lawhive's mission forward.

Join Intercom, the leading AI Customer Service company dedicated to revolutionizing customer experiences across the globe.Our flagship AI agent, Fin, represents the pinnacle of customer service technology, enabling businesses to offer exceptional, round-the-clock support and fundamentally enhance customer interactions. Fin is seamlessly integrated with our Helpdesk, forming the Intercom Customer Service Suite—an all-encompassing solution for intricate inquiries that necessitate human intervention.Established in 2011 and trusted by nearly 30,000 businesses worldwide, Intercom is redefining customer service standards. We are driven by our core values of innovation, speed, and delivering remarkable value to our clients.What’s the Opportunity?We are on the lookout for Staff Product Engineers to join our AI Group and contribute to the development of Intercom’s AI-driven products. As a Product Engineer in Machine Learning, you will collaborate closely with both our ML Scientists and Product teams, gaining a comprehensive understanding of our product offerings, customer needs, and ML technological framework.Your responsibilities will include defining new machine learning features, exploring suitable algorithms and technologies, and quickly delivering initial prototypes to our users.Our team is highly focused on product development, collaborating with Product and Design teams. Our dedicated Engineering staff enables us to expedite production, frequently launching beta versions within weeks after successful offline testing.We are passionate about leveraging machine learning technology, having successfully productized everything from traditional supervised models to innovative unsupervised clustering algorithms and unique applications of transformer neural networks. We rigorously test and assess the tangible impact of each model we implement.If you are an accomplished product engineer with a methodical approach to development and practical experience with ML systems, we would love to hear from you!

Dataiku offers a unified platform for building, deploying, and managing AI systems at enterprise scale. Teams use this platform to design analytics, develop machine learning models, and manage AI agents within a single environment. Dataiku connects with many data sources, cloud services, and AI tools, supporting collaboration and centralized oversight. Companies around the world use Dataiku to achieve measurable results with AI. Learn more about Dataiku on the blog, LinkedIn, X, and YouTube. Role overview The Senior Generative AI Engineer joins the Enterprise Data & Analytics (ED&A) team in London. This position is hands-on and centers on building advanced agentic AI systems that help improve internal operations at Dataiku. What you will do Develop and implement generative AI solutions for internal business needs Collaborate with business units to understand challenges and turn them into practical software applications Lead projects from requirements gathering through deployment Oversee the entire lifecycle of AI system development within the ED&A team