---
title: 'Senior AI Platform Engineer at 9fin'
canonical: 'https://feeny.ai/job/senior-ai-platform-engineer-9fin-london-fmn2pmmkpccg'
type: 'job'
last_seen: '2026-09-06'
---

# Senior AI Platform Engineer at 9fin

- **Company:** 9fin
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Posted:** 2026-07-06
- **Last confirmed live:** 2026-09-06
- **Apply:** 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.

## About 9fin

## Company Overview
- **One-liner**: 9fin is the AI-native intelligence platform that provides data, analytics, news, and AI-powered workflows for global debt capital markets.
- **Entity Type**: Private (Series C)
- **Headquarters**: London, United Kingdom
- **Founded**: 2016
- **Founders**: Steven Hunter (CEO) and Hussam El-Sheikh (CTO)

## Core Business
- **Primary industry/industries**: Financial Technology (Fintech), Debt Capital Markets, AI/Data Analytics
- **Target customers**: B2B, specifically investment banks, asset managers, hedge funds, law firms, private credit funds, and advisory firms.
- **Mission or purpose statement**: To become the number one platform for debt markets globally, redefining how debt markets are understood and acted on by credit teams.

## Products & Services
- **9fin Platform**: A unified platform combining breaking news from expert reporters, structured data and analytics, and AI-powered workflows. It covers leveraged finance, distressed debt, CLOs, private credit, ABF, and investment grade across North America, Europe, Latin America, and Asia-Pacific.
- **9fin AI (AI Chat & Research Grid)**: Launched in June 2026, these tools help credit professionals move from question to conviction faster. AI Chat provides cited answers to complex credit questions in seconds. Research Grid enables users to build structured company comparisons in minutes using pre-defined or custom questions. Every output is grounded in proprietary debt market data and linked to source material. [9fin.com](https://www.9fin.com/)

## Market Standing
- **Valuation/Market Cap**: $1.3 billion (as of Series C fundraise in March 2026) [cbinsights.com](https://www.cbinsights.com/company/9fin)
- **Key Metric**: Total funding raised to date: $253.95M [cbinsights.com](https://www.cbinsights.com/company/9fin)
- **Notable Investors/Partners**: Not all investors are publicly listed, but the company has raised over $250M across Series A, B, and C rounds.
- **Growth Signals**: 
    - In June 2026, launched two major AI tools (AI Chat and Research Grid) [prnewswire.co.uk](https://www.prnewswire.co.uk/news-releases/9fin-launches-next-generation-of-ai-tools-for-debt-capital-markets-302794326.html)
    - Powers credit teams at 300+ leading global institutions [9fin.com](https://www.9fin.com/about)
    - Employs 350+ people globally [9fin.com](https://www.9fin.com/about)
    - Scaled globally with offices in London, New York, Hong Kong, and Belfast [9fin.com](https://www.9fin.com/about)

## Competitive Advantages
- **AI-native foundation**: Built from the ground up with a decade of proprietary debt market data powering its AI, creating a strong moat. [9fin.com](https://www.9fin.com/about)
- **Deep domain expertise**: Co-founders have backgrounds in investment banking (J.P. Morgan) and engineering (Deutsche Bank), and the platform is calibrated by in-house credit, distressed, and legal analysts with decades of experience. [9fin.com](https://www.9fin.com/about)
- **Comprehensive data**: Unifies public, private, and distressed credit data in a single connected view, replacing multiple legacy tools. [9fin.com](https://www.9fin.com/)
- **Trusted by the market**: Used by 80% of trading desks among top-tier institutions. [9fin.com](https://www.9fin.com/)

## Strategic Focus
- **Current priorities and direction for growth**: Scaling globally and deepening the AI platform. The company is building "credit-specific AI agents that proactively monitor, draft and alert," moving from a source of intelligence to the platform where credit professionals get work done. [prnewswire.co.uk](https://www.prnewswire.co.uk/news-releases/9fin-launches-next-generation-of-ai-tools-for-debt-capital-markets-302794326.html)

## Why Work Here
- **Culture highlights**: Emphasizes "true flexibility," "a culture of care," and the opportunity to "build at the edge" with the latest AI tools. The company values ambition and offers real opportunities to make an impact. [9fin.com](https://www.9fin.com/careers)
- **Remote/hybrid/office policy**: Offers a flexible work model: "Work from home, or from one of our great offices around the world. We encourage time with your team, while giving you the flexibility when you need it." [9fin.com](https://www.9fin.com/careers)
- **Notable perks or engineering culture**: 
    - Enhanced parental leave, flexible hours, and sabbaticals. [9fin.com](https://www.9fin.com/careers)
    - Engineers, product, and AI teams own the full experience, from data architecture to interface, working closely with customers. [9fin.com](https://www.9fin.com/careers)
    - High growth trajectory with global scaling, providing real career advancement opportunities. [9fin.com](https://www.9fin.com/careers)

## Sources
1. [9fin Careers Page](https://www.9fin.com/careers)
2. [9fin About Page](https://www.9fin.com/about)
3. [9fin Homepage](https://www.9fin.com/)
4. [CB Insights Company Profile](https://www.cbinsights.com/company/9fin)
5. [PRNewswire - 9fin Launches Next Generation AI Tools](https://www.prnewswire.co.uk/news-releases/9fin-launches-next-generation-of-ai-tools-for-debt-capital-markets-302794326.html)
6. [9fin Jobs Portal (Ashby)](https://jobs.ashbyhq.com/9fin)

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