Senior Backend Engineer, 9fin
+ Equity options
1-5 days a week in office
Data & analytics platform for finance professionals
Be an early applicant
Data & analytics platform for finance professionals
201-500 employees
Be an early applicant
+ Equity options
1-5 days a week in office
201-500 employees
Company mission
To help leveraged finance professionals win business, outperform their peers, and save time.
Role
Who you are
- Have experience operating as a Senior IC Engineer, leading systems design and infrastructure discussions, mentoring more junior team members, and scoping work within cross-functional product teams
- Plan and reason about software effectively, clearly and compellingly communicating its purpose within systems and its business impact on clients
- Have hands-on experience designing data flow through software, from persistent storage to API endpoints, while applying industry best practices for validation
- Experience with Python and its web frameworks (we currently use FastAPI with strong typing & Pydantic)
- Strong experience delivering APIs, Service Oriented Architecture
- Good working knowledge of SQL statements for retrieving data
- A good collaborator and communicator with cross functional engineering teammates and others within 9fin
- Code Quality: Through writing testable, maintainable code, and by engaging in code review for your own work and for reviewing others
What the job involves
- As part of a cross functional team, lead projects by defining and designing systems, building proof of concepts, and delivering new service functionality - including APIs, data processing and automation - while collaborating with Product and Clients
- Development and engineering primarily on the backend services and web application hosted tools and systems of the 9fin platform
- Play an impactful role within project teams as a senior IC, running code reviews, mentoring other developers, leadership & involvement in early research and experimentation with new technologies providing input for new features and products
- Continually improve the 9fin codebase taking the chance to automate, refactor and document when it’s most impactful.
- Very diverse web platforms, from complex financial data modelling, complex access control business logic, capturing environmental, emission, energy data, incorporation of ML/AI prediction services, data visualisation serving and automation systems
- Collaboration and teamwork: Cross functional teams are formed for all projects including the appropriate domain expertise from 9fin financial, legal and editorial colleagues. This allows the best quality information and feedback to go directly to engineering project teams. Your ability to explain and break down complex projects to non technical audiences will enable productive and efficient team progress
- Developer Experience: Through managed automated preview environments, feature flags and well maintained non production environments. You will be able to move with velocity and get feedback and iterate quickly
- Our Backend Stack:
- Python is the dominant backend language used
- Flask & FastAPI
- Typing is used within our Python stack to power automated documentation and API definitions
- Relational Databases (PostgreSQL) at the heart of majority of services
- We have our own internal developer platform with standardised paved road approaches to infrastructure to bring your code into production as quickly as possible
- We’re AWS for Cloud hosted services
- Heavy use of AWS lambda Serverless
- Docker (AWS ECS) for uniform development/deployment from dev to prod
Salary benchmarks
Our take
9fin’s initial aim was to solve the problem of extracting data out of financial documents. It quickly turned to AI, where computer vision tools can be deployed to find key financial data points - like a company’s sales and revenue - quickly and automatically.
Its AI tools learn to understand the complicated legal clauses in contracts, automating a lot of the manual work that’s usually involved in this space. The result is a platform that debt capital market professionals can use to make quicker and better investment decisions.
9fin is used by leading banks, hedge funds and asset managers around the world - with a 100% deal prediction accuracy record under its belt, it’s easy to understand why. The company has seen significant investment, the most recent of which will support the scaling of its team and expansion of its product into new asset classes, as well as helping it to grow its presence in the US.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
84% employee growth in 12 months
Company
Funding (last 2 of 4 rounds)
Dec 2024
$50m
SERIES B
Dec 2022
$25.3m
SERIES A
Total funding: $88.5m
Company benefits
- Flexible hybrid working policy (no in-office mandate)
- 22 weeks full pay maternity, 12 weeks full pay paternity + shared parental leave
- Learning & development budget
- 25 days off + bank holidays
- Bi-annual team and company socials
- One month paid sabbatical after 5 years of service
- Work abroad for up to 3 months a year
- Bank holiday swap program
- Vitality health insurance
Company values
- Technology doesn't serve the business. Technology is the business: Technology and business are not independent; they are one and the same. We’ve met CEOs who don’t know what language their code is written in and CTOs who don’t know who the customers are. That’s not OK
- Talent trumps experience: We judge people by the quality of their ideas, not the duration of their employment. We’d rather work with people who have spent 12 months being awesome than those who have spent 3 years being average
- Don't know? Say so: Ignorance is only a weakness when you don’t admit it. We’ve seen lots of people waste hours of productivity because they were too afraid to ask for help
- Ship early and often: It’s impossible to design a truly awesome product without customer feedback
- Never settle: The product might have shipped, but it’s never perfect. If we can’t find ways to improve we just aren’t looking hard enough
- Diversity: We don’t discriminate. As well as being an end in itself, varied backgrounds and cultures bring new perspectives and stop group think
- Have an opinion: No decision is off limits to being challenged. Disagreement is healthy, it shows you care
- Beautiful simplicity: If it’s not easy to use, then it’s broken. Consumer applications relentlessly focus on the user with beautiful interfaces and snazzy graphics. There’s no reason why B2B can’t be just as good
- Make time for others: Everyone is busy. But taking 5-10 minutes out of your day to grab a coffee with a colleague who needs advice or help is not too much to ask
- Overcommunicate: Don’t leave people in the dark. It’s better to receive a 10 second note saying “Super busy, but I’ll get to it.” than radio silence
- Family & health come first: No customer or job matters more than family and your health
Company HQ
City of London, London, UK
Articles
Leadership
Steven Hunter
(Co-Founder & CEO)Previously an Analyst at JP Morgan and an Investment Executive at Babson Capital Investment.
Huss El-Sheikh
(Co-Founder & CTO)Previously a Business Analyst at Deutsche Bank for 4 years.
People progressing
Jen joined in 2022 as our Head of People, bringing a wealth of expertise in HR. As her industry knowledge and impact grew, Jen got promoted to COO in 2024 and is now one of our key executive leaders.
Huw joined 9fin as an intern in 2018 (one of our first employees!) 7 years later, he is now our Global Head of Strategic Operations, leading our global expansion.
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