# Senior AI Platform Engineer [9FIN](https://gurify.com/jobs?q=9FIN) · London · Posted 2 months ago Senior [DevOps](https://gurify.com/jobs/devops) [AI & ML](https://gurify.com/jobs/ai-ml) [Apply on the original posting → (opens in a new tab)](https://jobs.ashbyhq.com/9fin/2ea78c9f-0159-49f4-ad8a-c80b8a47592b) ## Job description ### About 9fin 9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion. Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets. Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption. We’re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide. ### THE OPPORTUNITY The AI Engineering team at 9fin is building the next generation of AI capabilities that will power our products for years to come. We're looking for a Senior AI Platform Engineer to help design, build, and evolve the core AI platform that enables Generative AI, Agentic AI, and machine learning applications across the business. This is an opportunity to join at the beginning of the platform's journey. Rather than inheriting a mature internal platform, you'll help shape its architecture, define engineering standards, and build reusable infrastructure that allows AI teams to move quickly, safely, and at scale. Working alongside backend engineers and AI engineers, you'll create the shared platform services that power everything from intelligent document understanding to autonomous AI agents capable of running scheduled workflows, generating morning briefings, identifying distressed companies, and supporting future AI-powered product experiences. Every day is different, but here's an example of the kind of things you'll work on: - Design, build and continuously evolve the enterprise AI platform that powers AI products across 9fin. - Develop scalable AI services supporting Agentic AI, Retrieval-Augmented Generation (RAG), embeddings, vector search, model serving, and intelligent automation. - Build orchestration layers that transform structured and unstructured enterprise data into reusable AI capabilities. - Develop production-ready AI applications using modern LLM frameworks and orchestration tools. - Design reusable platform components for prompt management, model serving, vector search, embeddings, AI gateways, and evaluation services. - Build APIs, SDKs, and developer tooling that enable self-service AI development across engineering teams. - Design secure, scalable deployment pipelines for AI models and applications. - Build AI observability capabilities including monitoring, tracing, evaluation, cost optimisation, and production quality measurement. - Collaborate closely with AI Engineers, Backend Engineers and Engineering Leadership to define platform architecture and engineering standards. - Establish engineering best practices around testing, governance, Responsible AI, deployment, and operational excellence. - Continuously evaluate emerging AI technologies and evolve the platform as the ecosystem rapidly advances. ### WHAT MAKES THIS ROLE DIFFERENT Unlike many AI Platform roles that focus on maintaining existing infrastructure, this role is centred around building the platform from the ground up. You'll join at an early stage where many architectural decisions have yet to be made, giving you genuine influence over how AI is built, deployed, and operated across 9fin. Within your first six months, you'll help build the platform that powers production AI agents capable of running autonomously in the background—supporting workflows such as scheduled market briefings, distressed company discovery, and future intelligent financial research products. Rather than owning a single AI product, you'll build the shared capabilities that enable multiple engineering teams to rapidly develop, deploy, and operate AI solutions at scale. You'll be one of a small number of senior engineers helping shape the technical direction of the platform alongside the Engineering Lead and fellow senior engineers. ### ABOUT YOU ### This role will be a great fit if you: ### AI PLATFORM ENGINEERING - Have 5+ years of software engineering experience, including 2+ years building AI/ML platforms, Generative AI applications, or production machine learning systems. - Have experience designing and deploying enterprise AI applications into production with a strong focus on scalability, reliability, and developer experience. ### LLMS & AGENTIC AI - Have hands-on experience building applications powered by Large Language Models (LLMs). - Have experience building Model Context Protocol (MCP) and Retrieval-Augmented Generation (RAG) solutions, making use of embeddings, vector databases, and modern LLM orchestration frameworks. - Have experience building or contributing to agentic AI systems, intelligent workflows, or orchestration frameworks. ### BACKEND & PLATFORM ENGINEERING - Are a strong backend engineer with production experience using Python and/or TypeScript. - Have designed scalable backend services, REST APIs, and event-driven architectures. - Have experience building reusable platform capabilities, internal developer tooling, SDKs, or shared engineering services. ### CLOUD & INFRASTRUCTURE - Have strong experience building cloud-native applications. - Are comfortable working with Docker, Kubernetes, CI/CD pipelines, and containerised deployments. - Have experience with solutions such as AWS Bedrock and AgentCore - Understand how to deploy, monitor, and operate AI services in production. ### AI OPERATIONS & OBSERVABILITY - Have experience implementing monitoring, tracing, evaluation, and cost optimisation for AI systems. - Have experience with observability solutions such as Arize Phoenix, Langfuse, or Langsmith - Understand the operational challenges of deploying LLM-powered applications, including latency, reliability, hallucination monitoring, and model quality evaluation. ### COLLABORATION & TECHNICAL LEADERSHIP - Enjoy collaborating across multiple engineering disciplines to shape technical direction and establish engineering best practices. - Are comfortable operating as one of a small number of senior engineers, influencing architecture and platform direction without necessarily having formal management responsibilities. - Thrive in fast-moving environments where many platform capabilities are still being designed and built. ### BONUS POINTS Experience with any of the following would be highly advantageous: - AI gateways and model routing - Prompt management platforms - AI evaluation frameworks - LangGraph, LangChain, LlamaIndex, DSPy, CrewAI or similar orchestration frameworks - Vector databases and semantic retrieval - Knowledge graphs or document understanding systems - Building internal AI platforms used by multiple engineering teams ### BENEFITS We’re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel. ### Financial & Insurance - Competitive Salary (our salary bands are benchmarked at the top end of the market) - Equity - Pension (your minimum contributions are 4% with 9fin matching up to 7%) - Private Medical Insurance - Paid sick leave with Income Protection for long periods of illness - Group Life Assurance - Season Ticket Loan & Cycle to Work schemes ### Time off - 25 holiday days per year - Local public holidays (with the ability to exchange them for alternative days) - Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work - Work abroad for up to 3 months a year - 1 month paid sabbatical after 5 years of service - Enhanced parental leave & flexible working arrangements available ### Training & Culture - Professional learning and development budget - AI experimentation budget of £800 (UK) per employee to trial AI tools - Quarterly team socials - Summer and Winter company social events 9fin is an equal opportunities employer At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you’re excited about this role but your experience doesn’t perfectly align with the job description, we encourage you to apply anyway. You might just be who we’re looking for — either for this role, or perhaps another. **Live in 9FIN’s hiring system.** Read from the company's own applicant tracking system, not reposted from a job board — so it's a real, open requisition rather than an ad that outlived the role. 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The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.\u003C/p\u003E\u003Cp\u003EWe\u2019re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.\u003C/p\u003E\u003Ch3\u003ETHE OPPORTUNITY\u003C/h3\u003E\u003Cp\u003EThe AI Engineering team at 9fin is building the next generation of AI capabilities that will power our products for years to come. We\u0026#39;re looking for a Senior AI Platform Engineer to help design, build, and evolve the core AI platform that enables Generative AI, Agentic AI, and machine learning applications across the business.\u003C/p\u003E\u003Cp\u003EThis is an opportunity to join at the beginning of the platform\u0026#39;s journey. Rather than inheriting a mature internal platform, you\u0026#39;ll help shape its architecture, define engineering standards, and build reusable infrastructure that allows AI teams to move quickly, safely, and at scale.\u003C/p\u003E\u003Cp\u003EWorking alongside backend engineers and AI engineers, you\u0026#39;ll create the shared platform services that power everything from intelligent document understanding to autonomous AI agents capable of running scheduled workflows, generating morning briefings, identifying distressed companies, and supporting future AI-powered product experiences.\u003C/p\u003E\u003Cp\u003EEvery day is different, but here\u0026#39;s an example of the kind of things you\u0026#39;ll work on:\u003C/p\u003E\u003Cul\u003E\u003Cli\u003EDesign, build and continuously evolve the enterprise AI platform that powers AI products across 9fin.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EDevelop scalable AI services supporting Agentic AI, Retrieval-Augmented Generation (RAG), embeddings, vector search, model serving, and intelligent automation.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EBuild orchestration layers that transform structured and unstructured enterprise data into reusable AI capabilities.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EDevelop production-ready AI applications using modern LLM frameworks and orchestration tools.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EDesign reusable platform components for prompt management, model serving, vector search, embeddings, AI gateways, and evaluation services.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EBuild APIs, SDKs, and developer tooling that enable self-service AI development across engineering teams.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EDesign secure, scalable deployment pipelines for AI models and applications.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EBuild AI observability capabilities including monitoring, tracing, evaluation, cost optimisation, and production quality measurement.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ECollaborate closely with AI Engineers, Backend Engineers and Engineering Leadership to define platform architecture and engineering standards.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EEstablish engineering best practices around testing, governance, Responsible AI, deployment, and operational excellence.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EContinuously evaluate emerging AI technologies and evolve the platform as the ecosystem rapidly advances.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EWHAT MAKES THIS ROLE DIFFERENT\u003C/h3\u003E\u003Cp\u003EUnlike many AI Platform roles that focus on maintaining existing infrastructure, this role is centred around building the platform from the ground up.\u003C/p\u003E\u003Cp\u003EYou\u0026#39;ll join at an early stage where many architectural decisions have yet to be made, giving you genuine influence over how AI is built, deployed, and operated across 9fin.\u003C/p\u003E\u003Cp\u003EWithin your first six months, you\u0026#39;ll help build the platform that powers production AI agents capable of running autonomously in the background\u2014supporting workflows such as scheduled market briefings, distressed company discovery, and future intelligent financial research products.\u003C/p\u003E\u003Cp\u003ERather than owning a single AI product, you\u0026#39;ll build the shared capabilities that enable multiple engineering teams to rapidly develop, deploy, and operate AI solutions at scale.\u003C/p\u003E\u003Cp\u003EYou\u0026#39;ll be one of a small number of senior engineers helping shape the technical direction of the platform alongside the Engineering Lead and fellow senior engineers.\u003C/p\u003E\u003Ch3\u003EABOUT YOU\u003C/h3\u003E\u003Ch3\u003EThis role will be a great fit if you:\u003C/h3\u003E\u003Ch3\u003EAI PLATFORM ENGINEERING\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EHave 5\u002B years of software engineering experience, including 2\u002B years building AI/ML platforms, Generative AI applications, or production machine learning systems.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave experience designing and deploying enterprise AI applications into production with a strong focus on scalability, reliability, and developer experience.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003ELLMS \u0026amp; AGENTIC AI\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EHave hands-on experience building applications powered by Large Language Models (LLMs).\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave experience building Model Context Protocol (MCP) and Retrieval-Augmented Generation (RAG) solutions, making use of embeddings, vector databases, and modern LLM orchestration frameworks.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave experience building or contributing to agentic AI systems, intelligent workflows, or orchestration frameworks.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EBACKEND \u0026amp; PLATFORM ENGINEERING\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EAre a strong backend engineer with production experience using Python and/or TypeScript.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave designed scalable backend services, REST APIs, and event-driven architectures.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave experience building reusable platform capabilities, internal developer tooling, SDKs, or shared engineering services.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003ECLOUD \u0026amp; INFRASTRUCTURE\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EHave strong experience building cloud-native applications.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EAre comfortable working with Docker, Kubernetes, CI/CD pipelines, and containerised deployments.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave experience with solutions such as AWS Bedrock and AgentCore\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EUnderstand how to deploy, monitor, and operate AI services in production.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EAI OPERATIONS \u0026amp; OBSERVABILITY\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EHave experience implementing monitoring, tracing, evaluation, and cost optimisation for AI systems.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave experience with observability solutions such as Arize Phoenix, Langfuse, or Langsmith\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EUnderstand the operational challenges of deploying LLM-powered applications, including latency, reliability, hallucination monitoring, and model quality evaluation.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003ECOLLABORATION \u0026amp; TECHNICAL LEADERSHIP\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EEnjoy collaborating across multiple engineering disciplines to shape technical direction and establish engineering best practices.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EAre comfortable operating as one of a small number of senior engineers, influencing architecture and platform direction without necessarily having formal management responsibilities.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EThrive in fast-moving environments where many platform capabilities are still being designed and built.\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EBONUS POINTS\u003C/h3\u003E\u003Cp\u003EExperience with any of the following would be highly advantageous:\u003C/p\u003E\u003Cul\u003E\u003Cli\u003EAI gateways and model routing\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EPrompt management platforms\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EAI evaluation frameworks\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ELangGraph, LangChain, LlamaIndex, DSPy, CrewAI or similar orchestration frameworks\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EVector databases and semantic retrieval\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EKnowledge graphs or document understanding systems\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EBuilding internal AI platforms used by multiple engineering teams\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EBENEFITS\u003C/h3\u003E\u003Cp\u003EWe\u2019re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.\u003C/p\u003E\u003Ch3\u003EFinancial \u0026amp; Insurance\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003ECompetitive Salary (our salary bands are benchmarked at the top end of the market)\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EEquity\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EPension (your minimum contributions are 4% with 9fin matching up to 7%)\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EPrivate Medical Insurance\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EPaid sick leave with Income Protection for long periods of illness\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EGroup Life Assurance\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ESeason Ticket Loan \u0026amp; Cycle to Work schemes\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003ETime off\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003E25 holiday days per year\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ELocal public holidays (with the ability to exchange them for alternative days)\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHybrid working model, to allow you the flexibility to decide how, where and when you do your best work\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EWork abroad for up to 3 months a year\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E1 month paid sabbatical after 5 years of service\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EEnhanced parental leave \u0026amp; flexible working arrangements available\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003ETraining \u0026amp; Culture\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EProfessional learning and development budget\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EAI experimentation budget of \u0026#163;800 (UK) per employee to trial AI tools\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EQuarterly team socials\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ESummer and Winter company social events\u003C/li\u003E\u003C/ul\u003E\u003Cp\u003E9fin is an equal opportunities employer\u003C/p\u003E\u003Cp\u003EAt 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you\u2019re excited about this role but your experience doesn\u2019t perfectly align with the job description, we encourage you to apply anyway. You might just be who we\u2019re looking for \u2014 either for this role, or perhaps another.\u003C/p\u003E","identifier":{"@type":"PropertyValue","name":"Gurify","value":"senior-ai-platform-engineer-at-9fin-2953afee1aac"},"url":"https://gurify.com/job/senior-ai-platform-engineer-at-9fin-2953afee1aac","datePosted":"2026-07-06","validThrough":"2026-11-02T23:59:59Z","hiringOrganization":{"@type":"Organization","name":"9FIN","sameAs":"https://jobs.ashbyhq.com/9fin"},"directApply":false,"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressCountry":"GB","addressLocality":"London"}}} ``` ```json {"@context":"https://schema.org/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jobs","item":"https://gurify.com/jobs"},{"@type":"ListItem","position":2,"name":"United Kingdom","item":"https://gurify.com/jobs/united-kingdom"},{"@type":"ListItem","position":3,"name":"Senior AI Platform Engineer","item":"https://gurify.com/job/senior-ai-platform-engineer-at-9fin-2953afee1aac"}]} ```