Senior II Engineer

• Own the design and delivery of significant backend systems and services across a product domain, from data modelling through API surface to operational concerns. - Lead complex, multi sprint engineering initiatives that span several engineers and stakeholders. - Drive scaling work: identify bottlenecks, propose architectural changes, and execute migrations safely in production. - Make pragmatic decisions about distributed systems concerns including consistency, idempotency, partitioning, retries, and observability. - Contribute to platform level discussions on service boundaries, data ownership, and how systems evolve as we enter new markets. - Run thorough code reviews, mentor senior and mid level engineers, and help define what good looks like in the codebase. - Partner with cross functional teammates from Product, Data Engineering, and our editorial and legal domain experts to scope work and ship the right thing. - Improve developer experience by investing in tooling, testing, observability, and the paved road so the whole team moves faster. - Ramp on legacy areas of the system, find the highest leverage cleanup, and execute it without stalling delivery. - Use AI assisted engineering to move faster on understanding, prototyping, and shipping code. ### What we're looking for

Company 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)
• 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
• 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.