3 months ago
London, United KingdomSenior
Responsibilities
- Lead cross-functional engineering projects by defining and designing systems, building proofs of concept, and delivering service functionality.
- Build and maintain backend services, web applications, APIs, data-processing systems, and automation for the 9fin platform.
- Work across frontend and backend development, including financial data modeling, access control, data visualization, and ML/AI prediction services.
- Own features from idea through design, implementation, deployment, and iteration.
- Conduct code reviews, mentor developers, and contribute to systems design, infrastructure discussions, research, and technology experimentation.
- Improve the codebase through automation, refactoring, documentation, feature flags, preview environments, and maintained non-production environments.
- Collaborate with product managers, designers, clients, and financial, legal, and editorial domain experts.
- Explain complex technical projects to non-technical audiences.
Requirements
- Experience as a senior individual contributor who has led systems design and infrastructure discussions, mentored junior team members, and scoped work within cross-functional product teams.
- Comfort working across frontend and backend development rather than specializing in only one area.
- Strong knowledge of modern JavaScript or TypeScript and frameworks such as React, plus experience building scalable backend services and APIs.
- Ability to use AI-assisted development tools such as Cursor, Claude, ChatGPT, and GitHub Copilot while maintaining engineering quality.
- A product mindset and attention to user experience when working with designers and product managers.
- Ability to independently own features from conception through deployment and iteration.
- Strong system-design and problem-solving skills with a focus on balancing delivery speed and long-term maintainability.
Benefits
- Competitive salary, equity options, pension contributions with 9fin matching up to 7%, private medical insurance, paid sick leave with income protection, and group life assurance.
- Season ticket loan and Cycle to Work schemes.
- 25 holiday days per year plus local public holidays, with the option to exchange holidays for alternative days.
- Hybrid working model with flexibility over where and when to work, plus the ability to work abroad for up to three months per year.
- One month of paid sabbatical after five years, enhanced parental leave, and flexible working arrangements.
- Professional learning and development budget and quarterly, summer, and winter company social events.
Tech Stack
Categories
Full StackProduct Engineering
About 9fin
9fin builds an AI-driven intelligence platform for the global debt markets, combining real-time news, credit data, and analytics for investment banks, asset managers, advisors, and law firms. It sells subscriptions to tools that centralize deal information, public and private credit data, and workflows across leveraged finance, structured credit, and distressed debt. Founded in 2016 and headquartered in London, the privately held company reports adoption by 300+ financial institutions worldwide.