Founding Ai Engineer Staff Join Us In London jobs in London – Browse 10,411 openings on RoboApply Jobs

Founding Ai Engineer Staff Join Us In London jobs in London

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Tracer logoTracer logo
Full-time|On-site|London

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 profes…

Jan 27, 2026
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Corgi logoCorgi logo
Full-time|£75K/yr - £140K/yr|Hybrid|London, England, United Kingdom

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.

Apr 27, 2026
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Marloo logoMarloo logo
Full-time|On-site|London

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.

Mar 23, 2026
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Corgi logoCorgi logo
Full-time|£75K/yr - £140K/yr|Hybrid|London, England, United Kingdom

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

Apr 27, 2026
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Pleo logoPleo logo
Full-time|On-site|London

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.

Apr 27, 2026
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HubSpot logoHubSpot logo
Full-time|Hybrid|Flex - London, United Kingdom

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.

Feb 12, 2026
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Aurora logo
Full-time|£150K/yr - £170K/yr|Hybrid|London, England, United Kingdom

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.

Feb 11, 2026
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Corgi logoCorgi logo
Full-time|£75K/yr - £140K/yr|Hybrid|London, England, United Kingdom

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

Apr 27, 2026
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weekdayworks logoweekdayworks logo
Full-time|On-site|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.

Feb 7, 2026
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Beamery logoBeamery logo
Full-time|On-site|London, UK

Join Beamery as a Staff EngineerAt Beamery, we are at the forefront of revolutionizing the HR technology landscape with our transformative AI platform. Our mission is to empower enterprise organizations to make equitable and informed talent decisions, streamlining their recruitment processes, enhancing internal mobility, fostering effective upskilling, and optimizing workforce planning. With our innovative solutions, we assist clients in hiring and redeploying over one million individuals each year.Why Join Us?This is an exciting time to be part of our team as we work towards enhancing our native integrations with industry giants like SAP, Workday, Microsoft, and LinkedIn. We're embedding our cutting-edge skills intelligence into critical workforce decision-making platforms and leveraging our advanced AI capabilities to enable smarter planning for the future. Additionally, our proprietary LLMs and knowledge graph technologies are designed to help organizations tap into diverse talent pools and promote fair decision-making at scale.We pride ourselves on our unique company culture founded on trust, empathy, and transparency, allowing our team members to bring their authentic selves to work.The RoleAs a Staff Engineer in our Sourcing and Recruiting team, you will play a pivotal role in enhancing Beamery’s core CRM experience. Collaborating closely with various business units, you will ensure a smooth sourcing and hiring workflow focused on achieving high-quality candidate matches and effective vacancy calibration.Our Technology Stack: TypeScript, React, Kubernetes, Istio, PostgreSQL, MongoDB, Redis.We seek a skilled Staff Engineer to technically lead a high-performing autonomous product team. You will align with the company’s strategic goals while guiding projects from discovery to production.In this role, you will provide technical mentorship to fellow engineers and actively contribute to elevating engineering standards across the business through collaboration with other Staff and Principal Engineers.

Apr 5, 2026
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Zip logoZip logo
Full-time|Hybrid|London

Join Zip as a Founding Enterprise ArchitectAt Zip, we are redefining enterprise procurement with our innovative AI platform, designed for seamless collaboration between humans and agents. We empower organizations to optimize procurement processes across teams, tools, and suppliers, enabling them to accelerate innovation.Our trusted partners include industry leaders such as T-Mobile, OpenAI, AMD, and Mars, who have collectively saved over $8 billion while managing over $500 billion in expenditures. Our team comprises seasoned professionals from notable companies such as Apple, Airbnb, and Meta, alongside former procurement executives from United Health, Sanofi, and NASA.Supported by top-tier investors including Adams Street, Alkeon, and Y Combinator, Zip has successfully raised $371 million, achieving a valuation of $2.2 billion. We are proud to be recognized by Forbes Fintech 50, Fast Company’s Most Innovative Companies, and LinkedIn’s Top Startups.Your RoleThis is a pioneering position where you will be the inaugural Enterprise Architect in the EMEA region, responsible for establishing the function from the ground up. You will develop playbooks, reference architectures, and technical discovery processes that will serve as a foundation for future Enterprise Architects.Engaging with our most significant strategic initiatives, you will collaborate directly with Fortune 500 and FTSE 100 clients who operate within SAP-dominated environments and complex multi-entity structures. Partnering with the Global SE leader, you will work closely with Sales, Solution Engineering, Product, and Customer Success teams to shape Zip’s approach to selling and delivering solutions across Europe for years to come.This is a hybrid position based in our London office.

Apr 30, 2026
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Amari AI logo
Full-time|On-site|London

About WexlerWexler is at the forefront of developing an unparalleled AI system tailored for litigation. Collaborating with some of the largest law firms globally, we assist them in navigating their most intricate cases, identifying winning strategies, and distilling clarity from the often overwhelming array of documents and facts. Based in London, we are a rapidly expanding legal AI company, trusted by firms like Clifford Chance, HSFKramer, Goodwin, and Addleshaw Goddard to uncover critical insights that can significantly impact case outcomes.Supported by a $5.3M Seed funding from Pear VC, Seedcamp, The LegalTechFund, and several prominent industry angels, we are committed to building a comprehensive AI platform designed to manage, resolve, and preempt legal disputes for enterprise law firms and Fortune 500 companies. Our growth trajectory of 10x year-over-year and the continuous acquisition of prestigious firms speaks to our success. Our innovative system efficiently extracts objective, cross-referenced facts from millions of documents, empowering litigators to secure more victories while conserving invaluable time. This ensures that every client receives the exceptional representation they rightfully deserve.At Wexler, we understand that AI is revolutionizing the legal landscape, yet many existing tools tend to focus on contract law or serve as generalist copilots. We pride ourselves on being the leading generative AI platform specifically crafted for the intricacies of litigation, a fact underscored by our remarkable growth.About the RoleAs our inaugural dedicated security engineer, you will play a pivotal role in establishing and managing the bedrock of Wexler's security framework, encompassing infrastructure, product, and compliance. Your collaboration with engineering, operations, and leadership teams will be essential to not only enhance our security measures but also to provide tangible proof of our commitment to security for our clients.Responsibilities:Take charge of current security tools and introduce new solutions (e.g., endpoint protection, MDM, access controls), ensuring their effective configuration, maintenance, and scalability as the organization expands.Integrate secure-by-design practices throughout the development lifecycle, from secure coding and threat modeling to design reviews and CI/CD hardening.Monitor systems for any anomalies and proactively design detection and prevention mechanisms.Ensure that infrastructure and applications comply with accepted industry standards (e.g., OWASP Top 10, AWS Well-Architected Framework).Conduct and lead risk assessments, including evaluations of third-party vendors and internal processes.

Dec 9, 2025
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tracebit logotracebit logo
Full-time|On-site|London

Join us at tracebit, where we empower security teams to swiftly and accurately identify intrusions within their cloud environments. Our innovative product utilizes deceptive canaries—virtual tripwires designed to mislead potential attackers.This is an exhilarating moment to become a part of our founding team:We are supported by top-tier investors including Accel and Tapestry.Our growth trajectory is remarkable; we doubled our Annual Recurring Revenue (ARR) last quarter and have secured major clients like Riot Games, Synthesia, Docker, Coveo, and Snyk, along with several others who we can’t publicly disclose.As one of the most promising startups in the UK, we have received outstanding market feedback and are poised for explosive expansion.We are frequently featured in esteemed startup rankings...Creandum’s Euro Seed Top 50 List, Sifted’s 2025 London Startups To Watch, Notion’s Cloud Top 100, and more.Our research has recently played a crucial role in resolving a critical security vulnerability in Google’s Gemini CLI.Having started with just 2 employees 18 months ago, we have expanded to 18 and plan to triple our team in the coming year.We are addressing substantial challenges for discerning organizations. Our streamlined tech stack empowers us to process billions of events weekly while maintaining robust security.

Sep 2, 2025
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Corgi Insurance logoCorgi Insurance logo
Full-time|£55K/yr - £90K/yr|Hybrid|London, England, United Kingdom

Corgi Insurance is an AI-driven insurance provider designed for tech startups. Backed by $108 million in funding and operating as a fully licensed carrier, the company is growing its London office and launching new entities across the EU and UK. Role overview The Founding Operator, based in London, works side by side with the VP of Operations and senior leaders. This role brings broad exposure to the business, with hands-on involvement in Corgi’s rapid expansion throughout Europe. What you will do Organize and manage daily operations, especially supporting EU market growth. Handle a variety of generalist tasks for both the London office and new entities. Take full ownership of assigned projects, meeting deadlines and escalating issues only when needed. Support operational needs for both the office and ongoing expansion efforts. What we look for High energy and drive to succeed in a startup environment. Comfort with ambiguity and willingness to take on a range of responsibilities. Ability to work without a set playbook and adapt quickly. Strong teamwork and open communication style. Work culture Quick decision-making and a bias for action over perfection. Intense periods of work balanced with steady effort during quieter times. Bring solutions with challenges; internal competition is encouraged. Behaviors that don’t fit Office politics or gossip. Taking feedback personally instead of constructively. Adding unnecessary complexity rather than streamlining processes. Location and compensation Role based in London, with on-site and hybrid work options. Compensation: £55,000 to £90,000 plus equity, rewarding ownership and initiative. How to apply Send a CV to sergio@corgi.com. Corgi Insurance welcomes applications from those who connect with this approach and environment.

Apr 27, 2026
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fuku logofuku logo
Full-time|£60K/yr - £100K/yr|On-site|London, England, United Kingdom

fuku is looking for a Founding Recruiter based in London. This position plays a key part in shaping the company’s early team and long-term direction. What you will do Identify and engage candidates who can drive fuku’s growth Guide the hiring process from sourcing through to offer Work closely with founders and early team members to define hiring needs Impact This role focuses on building the team from the ground up. Early hires will help set the culture and pace for the company’s future. Location This position is based in London, England, United Kingdom.

Apr 27, 2026
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eqltech logoeqltech logo
Full-time|Hybrid|London, England, United Kingdom

eqltech is seeking a Founding Chief Technology Officer (CTO) to help shape and build an early-stage AI platform in London. This is a hands-on technical leadership role, working side by side with the founder to design and expand the company’s core technology from the ground up. The platform brings together modular workflow orchestration, an AI-powered domain assistant, and a sophisticated document intelligence layer. The aim: to turn fragmented, manual processes into streamlined, intelligent solutions for institutional finance clients. eqltech operates at the intersection of AI and finance, serving a high-value client base that lacks strong AI infrastructure today. With pre-seed funding secured and preparations underway for a seed round, the company offers a co-founder level structure to the right CTO. The CEO brings operational depth and strong client-side expertise to the partnership. What you will do Define and lead the technical strategy, architecture, and engineering execution for the platform Build and mentor a high-performing engineering team from the ground up Oversee development of workflow orchestration, document intelligence, large language model (LLM) integration, and data pipelines Work closely with the CEO to translate client needs into actionable product features Represent technology as a co-founder, collaborating with clients, partners, and investors as the company grows

Apr 29, 2026
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9fin logo9fin logo
Full-time|On-site|London

9fin is looking for a Staff Engineer to join the team in London. This position centers on building scalable systems and advancing the company’s financial data analytics platform. Staff Engineers at 9fin help set technical direction and have a direct impact on product quality. Role overview This role involves both hands-on engineering and collaboration with peers. The work supports evolving data and user needs, with a focus on reliability and performance. What you will do Design and develop systems that handle increasing data volumes and user demands Collaborate with fellow engineers to strengthen analytics features Offer input that shapes product features and influences the customer experience Location This is an on-site role based in London.

Apr 20, 2026
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Omnea logoOmnea logo
Full-time|On-site|London

Our MissionAt Omnea, we are transforming the enterprise business landscape by addressing the most challenging aspects of procurement. Our aim is to streamline the purchase process, which often drags on for months, involves numerous emails, and requires input from various departments such as Finance, Legal, Security, and IT for approvals.With the backing of $75M from Khosla Ventures, Insight Partners, and Accel, we are revolutionizing this space. Our AI-driven platform integrates every stakeholder, step, and system to ensure that buying is swift, secure, and efficient—providing a singular destination for requests, automated approvals and renewals, real-time supplier risk analysis, and complete visibility of spending.This sector represents a $7B+ untapped market, and our growth trajectory underscores the potential: we have increased our ARR tenfold to double-digit millions in just 18 months, earning the trust of global enterprises like Spotify, MongoDB, Monzo, and Albertsons. Currently, we are recognized as the 4th fastest growing startup in Europe.Our team has previously scaled Tessian (cybersecurity technology backed by Sequoia, Balderton, Accel, and acquired post-Series C). We comprise ex-founders and operators who have successfully grown unicorns and delivered world-class products. You will collaborate with seasoned leaders like Ben, Abs, Sabrina, and Rebe.What We're Looking ForWe are on the lookout for an outstanding, product-oriented Staff Software Engineer (L4) to be a pivotal part of our engineering team and propel Omnea into its next growth phase. In the upcoming year, our team will double in size, our enterprise customer base will expand from around 100 to over 200, and our revenue is projected to triple. This role is for a senior individual contributor focused on domain-level impact, where you will utilize your deep technical expertise to influence systems, architecture, and product outcomes—without formal team leadership or people management obligations.You will join us at a critical juncture. We have recently secured $50M in Series B funding from ....

Jul 21, 2024
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Indicium AI logoIndicium AI logo
Full-time|On-site|London

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.

Mar 4, 2026
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H logoH logo
Full-time|On-site|London

Location: LondonCompany: H About H H is focused on building agentic AI that automates complex, multi-step tasks typically handled by people. The company’s goal is to help individuals achieve more by creating superintelligent systems that work safely and responsibly. H values openness, continuous learning, and collaboration. Every team member’s input matters here. About the Models Team The Models team develops the core models that power H’s agentic AI technology. This group works on training methods to boost model performance and efficiency, especially for agent-driven applications where inference costs matter. Projects span Large Language Models (LLMs) and Vision-Language Models (VLMs), enabling agents to interpret and interact with complex environments. Team members refine these models using advanced training approaches, including reinforcement learning and reward modeling. The focus is on better instruction following, tool use, and dynamic interaction. The team’s work bridges research and product, turning new research into practical solutions that move AI forward. Who Hires Here H seeks exceptional AI researchers and engineers from around the world who care about advancing technology safely and responsibly. The company welcomes those eager to shape the future of superintelligent AI alongside a collaborative and driven team.

Apr 14, 2026

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