Senior Platform Engineer - Developer Experience

9fin Ltd

Job Overview

Location

London

Job Type

Full-time

Full Job Description

📋 Description

• We are looking for a Senior Developer Experience Engineer to help make software development at 9fin faster, simpler and safer.
• This is a software engineering role focused on the tools, systems and paved roads that other engineers use.
• You will work across the software development lifecycle, from creating a new service through to testing, deployment, observability and operating it in production.
• Your customers are 9fin's software engineers.
• You will have the autonomy to solve problems that help them build products quickly, securely and to a high standard of quality.
• The goal is not to centralise every engineering decision within Platform.
• It is to give teams sensible defaults, effective self-service tools and a clear path to production.
• You will join an established Platform team and work alongside our existing Developer Experience Engineer.
• You will speak directly with engineers, understand where they are losing time or carrying unnecessary complexity, and build solutions that teams want to adopt.
• Every day is different, but here are examples of the kind of things you’ll work on:
• Building and maintaining internal tools, services, APIs and command-line applications.
• Improving workflows across coding, testing, code review, deployment and production operations.
• Creating service templates and paved roads that make it easier to build secure, observable and reliable software.
• Improving the speed, reliability and usability of our CI/CD systems.
• Developing reusable platform capabilities that product engineers can consume through self-service.
• Helping engineers use observability effectively, with good defaults for logs, metrics, traces and service-level indicators.
• Working directly with engineers to understand friction, test ideas and support adoption.
• Using feedback and workflow data to measure whether changes have improved the developer experience.
• Contributing production-quality code, tests, documentation and operational support.
• This role will be a great fit if:
• You are a strong software engineer with experience designing, building, testing and operating production software.
• You are proficient in at least one modern programming language.
• You understand the software development lifecycle and have practical experience improving how software is built, tested, deployed or operated.
• You have strong opinions about what makes software development effective, while remaining pragmatic about different teams and contexts.
• You can design maintainable systems and make sensible trade-offs between speed, quality and complexity.
• You have experience with CI/CD, containers and cloud infrastructure.
• You enjoy building tools and platforms for other engineers.
• You take a product approach to internal tooling: understanding user needs, validating solutions and measuring adoption.
• You can independently own a problem from discovery through to delivery and adoption.
• You communicate clearly through code, documentation and technical discussions.
• You have a real appetite for learning and self-improvement.

🎯 Requirements

• You are a strong software engineer with experience designing, building, testing and operating production software.
• You are proficient in at least one modern programming language.
• You understand the software development lifecycle and have practical experience improving how software is built, tested, deployed or operated.
• You have strong opinions about what makes software development effective, while remaining pragmatic about different teams and contexts.
• You can design maintainable systems and make sensible trade-offs between speed, quality and complexity.
• You have experience with CI/CD, containers and cloud infrastructure.
• You enjoy building tools and platforms for other engineers.
• You take a product approach to internal tooling: understanding user needs, validating solutions and measuring adoption.
• You can independently own a problem from discovery through to delivery and adoption.
• You communicate clearly through code, documentation and technical discussions.
• You have a real appetite for learning and self-improvement.

🏖️ Benefits

• Competitive Salary (our salary bands are benchmarked at the top end of the market).
• 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.
• 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.
• Professional learning and development budget.
• Quarterly team socials.
• Summer and Winter company social events.

Skills & Technologies

AWS

Terraform

Senior

Hybrid

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9fin Ltd

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About 9fin Ltd

9fin Ltd operates a data and analytics platform for the European high-yield and leveraged-loan markets. The company aggregates and structures bond covenants, pricing, financials, and legal documentation into searchable dashboards, APIs, and alerts, enabling investment managers, banks, and advisors to screen opportunities, monitor risk, and prepare pitches faster. Coverage spans more than 2,000 issuers and 10,000 tranches, updated daily by a team of credit analysts and engineers. Founded in 2016 and headquartered in London, 9fin is authorised and regulated by the Financial Conduct Authority.

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