Senior Backend Engineer

About [Employer hidden — sign up to reveal]

[Employer hidden — sign up to reveal] is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion. Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. [Employer hidden — sign up to reveal] replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets. Today, [Employer hidden — sign up to reveal] powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption. We’re at a defining inflection point. With proven product-market fit and strong, global market pull, [Employer hidden — sign up to reveal] is accelerating toward becoming the category-defining platform for debt markets worldwide.

What You'll Work On

• 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 [Employer hidden — sign up to reveal] 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 [Employer hidden — sign up to reveal] 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 [Employer hidden — sign up to reveal] financial, legal and editorial colleagues. This allows the best quality information and feedback to go directly to engineering project teams.
• 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

Requirements

This role will be a great fit if you:

• 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.
• Strong working knowledge of SQL statements for retrieving data.
• A good collaborator and communicator with cross functional engineering teammates and others within [Employer hidden — sign up to reveal].
• Code Quality: Through writing testable, maintainable code, and by engaging in code review for your own work and for reviewing others.

Nice-to-have: Experience in data modelling and with a pipeline orchestrator.

Benefits

We’re a scaling start up and we enjoy sharing our success. Benefits include: Competitive Salary, Equity options, Pension (4% min with [Employer hidden — sign up to reveal] matching up to 7%), Private Medical Insurance, Income Protection, Group Life Assurance, Season Ticket Loan & Cycle to Work schemes, 25 holiday days, public holidays, hybrid working, work abroad up to 3 months, sabbatical after 5 years, enhanced parental leave, learning budget, quarterly socials, and summer/winter company events.

Equal Opportunities

[Employer hidden — sign up to reveal] is an equal opportunities employer. We are dedicated to building a fair and inclusive workplace. If you’re excited about this role but your experience doesn’t perfectly align, we encourage you to apply anyway.