Founding Applied AI Engineer at weekdayworks | London

Join a pioneering journey in AI innovation!We are seeking a Founding Applied AI Engineer to be part of our client’s dynamic team in London. As an early hire in a rapidly growing startup moving from Seed to Series B funding, you will play a crucial role in shaping the future of intelligent systems.

About TracerTracer is an innovative early-stage startup that specializes in developing autonomous AI agents for production data pipelines. Backed by seasoned investors and industry leaders, we believe that AI will revolutionize production systems, becoming a key player in enterprise software over the next decade. Our team is composed of highly skilled professionals focused on delivering impactful results. Role OverviewWe are seeking a Founding AI Engineer (Staff) to join our London team. In this pivotal role, you will be responsible for designing the core architecture and launching an AI agent that generates reliable root cause analyses (RCAs) and actionable suggestions for significant alerts. While human oversight remains essential for production decisions, you will empower the agent to handle the intricacies of data management. Our Technology StackPython with LangGraph for multi-agent alert investigationsRust for high-performance systemsClickHouse for scalable event and investigation historyAWS and Terraform for self-managing infrastructureNext.js and TypeScript for an engaging front-end experience Your ResponsibilitiesAs the core architect, you will transform alerts into comprehensive investigations and RCAs. Your key tasks will include:Designing and building the primary alert investigation and RCA pipeline using PythonCreating essential systems such as alert ingestion, context enrichment, hypothesis orchestration, and reportingMaking critical architectural decisions to ensure reliability and observability from the outsetCollaborating with founders to refine and expand high-value alert typesDeveloping customer-ready integrations across the pipeline

Pleo creates tools that simplify business spending for finance teams and employees. With over 40,000 customers and a diverse team of more than 850 people from 100+ nationalities, the company continues to grow and refine how organizations manage expenses. Curiosity about customer needs, a drive to untangle complexity, and high standards shape the way work gets done at Pleo. Role overview The Staff Applied AI Engineer will play a key part in building the next wave of AI-powered features at Pleo. This position focuses on using rich spend data to deliver meaningful product improvements. Collaboration is central: expect to work closely with software engineers, data engineers, and data scientists to move prototypes into production and create real value for customers. Team structure and collaboration This role is part of the data team, which includes a Staff Data Platform Engineer and a Staff Data Scientist. Each member brings specialized expertise. The Staff Applied AI Engineer’s primary responsibility is applied AI engineering and contextual data analysis. The position reports to the Director of Data Product and works with multiple product squads to help shape and launch AI-driven features across Pleo. What you will do Partner with product engineers and data experts to design and build AI-driven products, including spend intelligence tools, automated processes, and agentic workflows. Work with cross-functional teams to integrate AI capabilities into new and existing products, aiming for smooth adoption and practical value.

Corgi provides insurance for technology startups, using AI to streamline underwriting and operations. With $108 million in funding and full regulatory approval as a licensed carrier, Corgi is expanding into the UK and EU. The platform uses Django, integrates Stripe for payments, and relies on AI-driven processes at every stage. Role overview This founding engineer position is based in London and focuses on building and shipping real products. Joining at an early stage, the role involves shaping both the product and company culture as Corgi grows in new markets. The work is hands-on, with a strong emphasis on delivering live solutions rather than just planning or design. Requirements Track record of independently building and launching projects with real user engagement and polished outcomes Comfort working at a daily pace, prioritizing progress over prolonged planning Ability to work across the technology stack and solve problems directly Strong opinions, balanced by openness to better solutions Humble attitude and genuine drive to build and improve How Corgi works Decisions are made quickly, without waiting for perfect answers Products and improvements are released regularly, not just quarterly Ship-and-iterate mindset keeps momentum high and avoids bureaucracy Consistent intensity during product pushes, with minimal slowdowns Decisions are made transparently High performers help raise the bar for the team This is not a passive or comfortable position. The role suits those who want to build and take ownership. Behaviors that lead to removal Engaging in office politics, avoiding responsibility, or gossiping Treating direct feedback as a personal attack Adding unnecessary complexity instead of improving efficiency Missing deadlines after making commitments How to apply Instead of a resume, send links to your work, such as: GitHub repositories Personal website Live projects Shipped applications Email applications to: sergio@corgi.com Candidates must have demonstrable projects to share. If not, this role is not a fit. Location This position is based in London. On-site or hybrid work options are available. Compensation Salary ranges from £75,000 to £140,000, plus equity. The range reflects a focus on real shipping ability over job titles.

About UsAt Percepta, we are dedicated to revolutionizing essential industries through applied AI. Our goal is to harness cutting-edge technology to enhance sectors that drive the global economy, such as healthcare, manufacturing, and energy.To achieve this, we collaborate closely with top-tier clients, facilitating their AI transformation journeys. Our unique strengths include:Expertise in engineering, product development, and research.Mosaic, our proprietary toolkit designed for the swift deployment of intelligent workflows.Strategic alliances with industry leaders like Anthropic, McKinsey, AWS, and more.Our rapidly expanding team comprises Applied AI Engineers, Embedded Product Managers, and Researchers, all driven by the mission to integrate AI into tangible improvements in everyday life.Percepta operates as a direct partnership with General Catalyst, a global transformation and investment firm.Role OverviewWe are seeking Applied AI Engineers to engage with customer executives, operators, and technical teams to devise and implement impactful AI systems. As we expand our footprint in Europe, your role will be pivotal in shaping our strategic direction and success in the region. Unlike many roles that focus on prototypes or laboratory projects, you will be responsible for designing, building, and deploying production-grade AI agents and workflows that generate substantial business value for our clients.Key ResponsibilitiesDefine AI Vision: Partner with client stakeholders to outline their long-term AI strategy and transformation roadmap.Identify Opportunities: Work backward from the long-term vision to highlight and prioritize specific AI applications that translate our ambitions into measurable business outcomes.Deliver Real Products: Quickly develop and deploy AI solutions that operate effectively in real-world scenarios with actual users and data.Enhance Our Core Product: Integrate insights from customer engagements into our Mosaic product, consistently introducing new features, patterns, and frameworks.

Role Overview bluefishai is looking for a Senior Applied AI Engineer to help shape how AI is implemented and integrated across the company. This position focuses on driving projects that improve developer productivity, streamline workflows, and introduce new product capabilities. The work is highly cross-functional and centers on delivering measurable business results. Key Responsibilities Lead initiatives that bring structure and clarity to AI adoption, setting standards for teams as they experiment with new approaches. Work closely with engineering, product, and leadership to identify impactful AI use cases and integrate them into the software development lifecycle. Advise on the application of emerging technologies, including agentic capabilities, to both products and internal processes. Mentor engineers, define best practices, and guide teams in adopting AI solutions that scale across the organization. Encourage collaboration and help align teams around practical, measurable solutions that boost productivity. Collaboration and Reporting This role reports directly to the VP of Engineering. Regular collaboration with engineering, product, and leadership teams is expected to ensure AI initiatives are impactful and aligned with business goals. Work Environment bluefishai is in the early stages of its AI journey, with a strong sense of curiosity and momentum. Teams are experimenting with different methodologies, and this role will be central in establishing effective, scalable AI practices across the company. Location This position is based in London or can be performed remotely within the UK.

About NevisNevis is pioneering the first-ever AI-driven wealth management platform, recently surpassing $50 billion in assets under management and projected to exceed $100 billion by year-end.Backed by prominent investors, Nevis has successfully secured $40 million in funding from Sequoia Capital, ICONIQ, and Ribbit, positioning itself as one of Europe’s most well-funded and rapidly expanding Series A startups.The RoleWe are on the lookout for an innovative and passionate Applied AI Engineer to join our dynamic team at Nevis. In this critical role, you will influence the development of our cutting-edge AI wealthtech product by creating LLM-driven automation solutions to tackle essential challenges faced by our corporate clients.You will engage with state-of-the-art LLM models, partnering with industry-leading vendors to enhance our product’s reasoning capabilities and achieve superior quality in our models’ outputs.Working alongside a distinguished team of engineers and product creators, including the ex-Head of AI at Revolut, you will have a unique opportunity to make a significant impact in one of the world’s largest industries.What You’ll DoDesign and develop LLM and ML-powered features for the Nevis platform.Collaborate with engineers and product teams to transition new AI capabilities from concept to production.Establish best practices for AI development, testing, observability, and reliability.Continuously assess and enhance AI product performance and reasoning accuracy.Work in tandem with product and design teams to prototype and refine new AI features.Stay abreast of advancements in Generative AI, including agentic systems and context engineering.Who You AreHands-on experience with LLMs.Demonstrated ability to solve real-world challenges using AI/ML.Strong statistical and data analysis skills.A STEM degree from a leading university.A passion for transformative AI technologies.A product-oriented mindset focused on practical solutions.

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.

Join Contentsquare, a pioneering experience intelligence platform, where we empower organizations to gain deep insights into their customers' digital journeys. Our innovative and scalable platform is designed for users across various expertise levels, making it easier to navigate the complexities of online interactions.As a global leader in experience analytics, we operate from 15 offices worldwide, committed to making a significant impact in the industry. We are seeking enthusiastic team members who are ready to contribute to our growth and success.At Contentsquare, we foster an inclusive work environment where every individual can thrive. Our community is built on values of courage, empathy, and intentionality, aimed at simplifying challenges for our clients, their customers, and each other.Note: Please be cautious of scam attempts impersonating Contentsquare. We do not request money or communicate through unsolicited messages. For further details, check our careers blog.Important Information:1. This is a software engineering position requiring a minimum of 5 years of relevant experience, particularly in TypeScript. While we utilize Large Language Models (LLMs), this is not a machine learning-focused role.2. The role is available as remote (in France, Spain, Italy, Poland, or Germany) or can be hybrid in our offices located in Barcelona, Paris, Milan, Munich, or Cairo.We are on the lookout for a Senior Fullstack Engineer (Applied AI) to engage in various innovative projects that harness the power of AI, especially leveraging LLMs. One of the key initiatives involves enhancing our AI CoPilot tool (currently exclusive to Heap) to broaden its application, allowing users with no prior experience in product or digital experience analytics to easily find answers through simple inquiries.Our rapid advancement in utilizing LLMs aims to streamline insights generation and simplify setup processes, among other enhancements. As our next Senior Software Engineer (Applied AI), you will play a significant role in product development and initial product iterations, participating in user interviews to validate product hypotheses.This position offers a unique opportunity to operate within a “startup-like” environment, where we swiftly transition from concept to proof of value, ensuring that our solutions deliver real benefits to our clients.

Your RoleAs a Founding Engineer at Marloo in London, you will play a pivotal role in shaping the future of our product. Your responsibilities will include:End-to-End Full-Stack DevelopmentOwn and develop core product features, working seamlessly from backend infrastructure to engaging frontend experiences, prioritizing rapid delivery and continuous iteration.Architectural LeadershipEstablish sustainable technical patterns and make crucial architectural decisions that align with our growth trajectory. You will be the guiding authority on our codebase and influence our engineering culture significantly.Collaborative Product DevelopmentEngage directly with the founders to convert user feedback into innovative technical solutions. Your understanding of business needs and product development will be as essential as your technical skills.AI-Driven DevelopmentUtilize AI tools daily to enhance your development processes, from architecture to debugging. We expect you to be an adept user of the latest AI development technologies.

Artificial Intelligence is increasingly essential across all sectors of society. At Scale AI, our mission is to expedite the evolution of AI applications. For the past eight years, we have been at the forefront of AI data innovation, driving some of the most groundbreaking advancements in AI, such as generative AI, defense technologies, and autonomous vehicles. Following our recent Series F funding, we are enhancing the application of frontier data and models by developing sophisticated agents for enterprises globally through our Scale Generative Platform (SGP).The SGP ML team is at the forefront of the AI revolution. We engage directly with clients to design state-of-the-art products utilizing the extensive proprietary research and resources cultivated at Scale. As an Applied AI Engineer, you will collaborate with clients to develop machine learning solutions tailored to their business challenges. Your responsibilities will span from constructing next-generation AI cybersecurity firewalls to transforming AI experiences in journalism and employing foundational genomic models for life-saving drug protein predictions. Daily data-driven experiments will yield critical insights regarding model capabilities and deficiencies, which you will leverage to enhance product performance. If you are passionate about shaping the future of the AI landscape, we are eager to hear from you!

About AnthropicAt Anthropic, we are committed to developing safe, interpretable, and steerable artificial intelligence systems. Our mission is to ensure that AI technology is both reliable and beneficial for users and society at large. Our rapidly expanding team comprises dedicated researchers, engineers, policy experts, and business leaders collaborating to create impactful AI solutions.About the Role: As an Applied AI Engineer in our Startups team, you will serve as a vital technical advisor to leading AI-native startups, guiding them in leveraging the Claude Developer Platform as they transition from early-stage products to scalable solutions. You'll engage in deep technical collaborations, working directly with startup engineering teams to assist them in product development, agent design, and pioneering advancements in AI.In close partnership with Applied AI Architects, Account Executives, and Anthropic's Product and Engineering teams, you’ll navigate startups through intricate technical engagements. Utilizing your expertise in AI engineering, you will create custom evaluation frameworks, design scalable architectures, and produce the technical resources necessary for startups to thrive with Claude.

Corgi is a licensed insurance carrier focused on tech startups, using AI to simplify and speed up coverage. The company has raised $108M and is expanding across the UK and EU. The platform relies on Django, integrates Stripe for payments, and features AI-driven underwriting. Role overview This founding engineer role is based in London and centers on building and launching new products, often independently. Corgi values engineers who turn ideas into live products, rather than following detailed roadmaps. Evidence of shipped side projects, weekend builds, or products that have reached real users is highly regarded. Who succeeds here Track record of independently building and delivering real projects Comfortable working across the full technology stack Delivers results quickly, in hours or days Low-ego, motivated by results rather than titles Open to feedback and willing to adopt better ideas Thrives in a high-energy startup setting How we work Decisions are made quickly; perfection is not the goal Products and processes ship regularly, not just quarterly Iteration happens after shipping, not after long review cycles High intensity during launches, with a steady pace year-round Transparent decision-making; no closed-door policies Internal competition is encouraged to raise standards This is a hands-on role for builders who want to make things happen. Behaviors that don’t fit Office politics, gossip, or avoiding responsibility Taking direct feedback personally instead of constructively Adding unnecessary overhead instead of streamlining Missing deadlines after committing to them Application process Send links to your GitHub, personal website, live projects, or shipped products CVs are not accepted Email applications to: sergio@corgi.com Evidence of shipped work is required for consideration Location and compensation Role is based in London; on-site or hybrid arrangements available Base salary: £75,000–£140,000, plus equity Salary band reflects proven shipping ability, not job titles

About Our TeamThe Applied Foundations team at OpenAI is committed to ensuring that our state-of-the-art technology remains both innovative and resilient against various adversarial challenges. Our mission is to uphold the integrity of our platforms as they evolve and expand. As a vital part of this team, you will be at the forefront of safeguarding against financial exploitation, large-scale attacks, and other forms of misuse that could jeopardize the user experience and operational stability.The Integrity division within Applied Foundations is tasked with developing scalable systems that identify and respond to harmful activities on OpenAI's platforms. We are establishing a pioneering team in London to design next-generation systems that will enhance and scale the capabilities of experts addressing harms associated with our technology.Key ResponsibilitiesDesign and implement scalable foundational systems for the detection, tracking, and enforcement of harmful activities using our technologies.Collaborate closely with both technical and non-technical specialists to gain insights into the harms we observe stemming from our platforms, guiding your design and implementation processes.Utilize OpenAI’s cutting-edge technologies to automate and enhance our ability to swiftly and accurately detect and analyze complex harms with minimal human intervention.Work alongside policy, trust and safety operations, legal teams, and engineers specializing in harm mitigation to comprehensively address abusive behaviors leveraging OpenAI’s technology.Stay updated on the latest techniques and tools to remain ahead of resourceful adversaries.Ideal Candidate ProfileMinimum of 5 years of software engineering experience focusing on backend and data systems.At least 2 years of experience in trust and safety analysis, investigations, and/or operational roles.Passionate about learning from leading experts on AI-related harms and eager to collaborate within an interdisciplinary team comprising both technical and non-technical roles.Ability to navigate our codebase intuitively, providing insights that strengthen our engineering capabilities.A relentless desire to learn and acquire new skills, coupled with the ability to effectively communicate this knowledge to others.

About LawhiveAt Lawhive, we are committed to democratizing access to legal services. Our innovative online platform empowers consumers and small businesses to obtain legal assistance at a fraction of traditional law firm costs. We seamlessly integrate human expertise from regulated lawyers with our pioneering AI lawyer, designed specifically for consumer legal matters.We believe that equal access to legal resources is one of the most significant societal challenges today. Our mission is to level the playing field, ensuring that legal assistance is as accessible as essential utilities.Our AI lawyer, Lawrence, is powered by our proprietary fine-tuned LLM, which has successfully passed the UK bar exam equivalent.Supported by leading venture capital firms in the US and UK, including Google Ventures, Balderton Capital, and TQ Ventures, we recently raised $40M in Series A funding to bolster our international expansion and grow our dynamic team, marking one of the largest Series A rounds in Europe for 2024.The RoleWe are on the lookout for a Senior Applied AI Engineer to become a pivotal member of our AI Engineering & Infrastructure team. In this role, you will be instrumental in deploying our latest AI-powered features and services at scale, enhancing our infrastructure, and ensuring the robustness of our solutions in production. Collaborating closely with AI researchers, software engineers, and product teams, you will bridge the gap between state-of-the-art AI research and its practical applications.

About XapienAt Xapien, we believe that understanding your business relationships is crucial. We are revolutionizing the way organizations assess their suppliers, investors, partners, and other third parties by leveraging advanced AI technologies that deliver speed, scale, and precision.Since our inception in 2018, we have evolved from a deep-tech startup into a globally recognized leader in AI-powered due diligence and risk intelligence. In 2024, we achieved significant milestones, including a $10M Series A funding, being listed in the Chartis RiskTech100®, and the Everest Group’s Leading 50™. Our product offerings and customer base have expanded remarkably.In 2025, we witnessed unprecedented growth: as regulatory pressures and reputational risks escalate, organizations globally are turning to Xapien for innovative, efficient solutions. Our clientele spans across various sectors, including prestigious law firms, financial institutions, educational establishments, and nonprofits, all seeking to convert lengthy research processes into valuable insights in mere minutes.Why Join Us?This is more than just a job; it’s a chance to influence the future of the due diligence sector with a premier product that is trusted by organizations worldwide. Regardless of your background—be it marketing, communications, sales, or finance—you will play an essential role in our growth story, enhancing our credibility, and connecting our solution with a rapidly changing market landscape.As we continue to scale, with a growing customer base and increasing regulatory challenges, the demand for real-time insights has never been higher. You will have the opportunity to shape strategies, streamline processes, and contribute to a brand that is redefining trust and transparency in the industry.If you are passionate about learning, innovating, and making impactful contributions, now is the perfect time to join Xapien.

Salary: £150,000 – £170,000Equity: 0.7% - 1.2%This position is in-person with flexible remote workdays.European visa sponsorship is available.About AuroraAurora is redefining the lifestyle operating system for top-performing individuals and organizations worldwide. Our clientele includes elite founders, executives, professional athletes, and families managing intricate and ongoing needs across travel, health, dining, and premium goods.Our platform is conversational, proactive, and accessible 24/7 globally, making it a vital tool for members who engage with it multiple times daily for crucial, time-sensitive decisions. The quality of our product, the soundness of our judgment, and the efficiency of our systems are instantly visible to our customers.The market for agentified premium lifestyle commerce exceeds $10 billion, with traditional concierge services often hampered by disjointed CRM systems and manual processes that lack scalability. Aurora integrates automation, AI agents, and expert human curators into a unified system, engineered for speed, precision, and impact.We have achieved remarkable early success:51% daily active users, 95% weekly active usersTransaction volume and member spending have surpassed industry benchmarks by 5x within the first three monthsBacked by Alex Macdonald, a leading figure in this domain, we have:Secured over $5 million in funding from seasoned operators and top-tier investorsDeveloped a product that boasts industry-leading engagement from paying membersAccumulated a substantial, proprietary dataset of user context (preferences, calendars, health signals) that fuels our proactive AI capabilitiesAs we scale our product and expand our member base, we are looking to grow our founding engineering team.Aurora operates from our offices in London, New York, and Los Angeles. Our engineering team primarily collaborates from our London office in Belgravia, with options for flexible remote work.

Join Anthropic as the Manager of Forward Deployed Engineering in our Applied AI division. In this pivotal role, you will lead a team of skilled engineers who are at the forefront of deploying innovative AI solutions. Your leadership will be crucial in driving technical excellence and fostering collaboration between cross-functional teams. You will work closely with product management and research teams to ensure our AI systems are effectively integrated into real-world applications.

Corgi is a licensed insurance carrier designed for tech startups, powered by AI. With $108M in funding and regulatory approval, Corgi is expanding into the UK and EU markets. The platform is built on Django, integrates Stripe for payments, and features AI-driven underwriting. Role overview Corgi is searching for a Founding Software Engineer based in London. This position calls for someone who brings ideas to life, taking projects from concept to live product. Candidates with a track record of side projects, shipped products, or anything that has gained real user engagement will stand out. This is more than a senior engineer role by title; it’s about building and launching real solutions. What you will do Independently build and deploy products from the ground up Work across the technology stack, handling new challenges as they arise Deliver results quickly, often within hours or days Contribute to a culture that values shipping and iterating frequently Participate in open and transparent decision-making Requirements Demonstrated experience developing and launching projects independently Comfort working across a broad technology stack Strong, experience-backed opinions with a willingness to consider better ideas Ambition and energy suited to a rapid startup pace Focus on delivering results rather than relying on job titles Work culture Decisions made quickly, even with incomplete information Frequent releases and continuous improvements Short review cycles with a focus on shipping and iterating Consistent performance expected beyond just launch periods Transparent, public-first communication style Healthy internal competition that encourages growth This is a hands-on build role. Consistent effort is expected; coasting is not an option. Behaviors that do not fit Engaging in workplace politics, gossip, or avoiding accountability Taking feedback personally instead of using it for improvement Introducing unnecessary bureaucracy rather than simplifying processes Failing to deliver after making commitments How to apply Send links to your GitHub, personal website, or live projects you have built and launched Resumes are not accepted Email: sergio@corgi.com If you cannot show shipped work, this role is not a fit Compensation and location Role based in London (on-site or hybrid) Salary range: £75,000 to £140,000, plus equity options Compensation depends on demonstrated ability to ship, not job title

Join our team at physicsx as a Senior AI Engineer - Applied and be at the forefront of artificial intelligence innovation. This role involves leveraging cutting-edge technologies to develop AI solutions that address real-world challenges. You will collaborate with a talented team of engineers and researchers, contributing to projects that push the boundaries of AI applications.