9fin - Staff Engineer
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Requirements
• Proven track record of building and delivering backend systems from development to production, especially in data intensive environments • Deep expertise in distributed systems, APIs, and data pipelines • Strong experience with data modelling, entity resolution/mapping, and complex relational domains • Familiarity with event-driven architectures, Kubernetes, and cloud-based infrastructure like AWS • Experience in database decoupling, service-oriented architectures, or platform modularisation • Proficiency in Python (or similar backend languages) • Experience modernising legacy systems and improving platform architecture • Proven ability to lead complex technical initiatives end-to-end • Strong product and customer mindset • Comfortable operating in ambiguity and driving clarity • Skilled at balancing hands-on technical work with guiding and aligning others • Communicate clearly and effectively with technical and non-technical audiences. • Experience as a founding engineer or CTO at a startup, or building systems from scratch in early-stage environments
Responsibilities
• Partner with other staff engineers to propose high impact engineering proposals . • You will influence technical strategy, participate in technical governance and decision making . You align the technical vision with various stakeholders (primarily the engineering leadership layer) . • Design and scale backend services, APIs, and data platforms powering 9fin’s new market products • Work on complex entity mapping and data modelling challenges across new market’s data sources • Drive database decoupling and system modularisation to improve scalability, flexibility, and long-term maintainability • You will review and guide architecture across teams, helping avoid unnecessary coupling and complexity while keeping teams focused on pragmatic, high-impact solutions. • Dive into complex legacy systems, identify root causes of friction, and define a clear path to modernisation • Deliver high-quality, reliable production code through testing, logging, and alerting • Move between deep debugging and high-level system design to shape our platform evolution • Set a high bar for engineering through hands-on coding and strong technical leadership. • Leverage AI-assisted engineering to accelerate system understanding and delivery • Establish best practices, guardrails, and tooling to improve engineering velocity and safety • Ensure systems are scalable, reliable, and adaptable as we grow • Partner closely with Engineering and Platform • You will raise our technical bar by mentoring senior engineers, improving IC hiring and levelling practices, and helping shape how we develop technical talent across 9fin
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 options • 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 • Training & Culture • Professional learning and development budget • Quarterly team socials • Summer and Winter company social events • 9fin is an equal opportunities employer
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