Senior Software Engineer - AI-Driven Fintech Platform (Remote UK)

Afternoon; United Kingdom; Remote; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Remote-first

Ownership and growth

Leadership access

Developing benefits

Job summary

Afternoon is building the operating system for modern financial advice firms, connecting investment data from 27 platforms with client records and AI-powered workflows. You will design and ship features across the React front end and Python back end, while owning services and APIs backed by PostgreSQL.

You’ll collaborate with the CTO, data science and product teams to solve complex problems, deploy to AWS with infrastructure as code, and help shape the product as the company scales in a

Qualifications

• Strong software-engineering fundamentals and experience shipping production software.
• Experience with Python or a similar programming language, along with a modern back-end framework such as FastAPI, Django, Flask, or an equivalent framework in another language.
• Strong initiative and the confidence to work independently, make progress and bring people in when their input is needed
• A sound understanding of API design, relational data modelling and PostgreSQL or a similar database.
• Experience with automated testing and a practical approach to quality.
• Familiarity with cloud infrastructure and deployment, ideally AWS and infrastructure as code.
• The ability to take ownership, communicate trade-offs and collaborate well across technical and non-technical teams.
• Comfort working in a startup where priorities evolve and people contribute beyond narrow role boundaries.

Responsibilities

• Design, build and improve product features across our React front end and Python back end.
• Develop reliable services and APIs backed by PostgreSQL and integrated with external data and productivity platforms.
• Build responsive, accessible interfaces that make complex client and investment information easy to understand and use.
• Work with product, data science and customers to understand problems, test assumptions and ship useful solutions.
• Integrate AI and machine-learning capabilities into dependable user workflows, with appropriate review, traceability and controls.
• Maintain infrastructure on AWS using Terraform and contribute to observability, performance, resilience and cost management.
• Work confidently with customers to understand their needs, translate them into clear technical problems and help bridge the gap between customer requirements and product development.
• Deliver clean, maintainable, well-tested software, using AI and other development tools where appropriate while taking full responsibility for the quality of the output.
• Review code, improve engineering practices and help the team make sound technical decisions as the platform scales.
• Investigate production issues, communicate clearly and follow problems through to resolution.

Skills

Python

Back-end frameworks

API design

PostgreSQL

Cloud infrastructure

Testing

Tools

FastAPI

Django

Flask

SQL

Job description

Afternoon is building the operating system for modern financial advice firms, connecting investment data from 27 platforms with client records and AI-powered workflows. You will design and ship features across the React front end and Python back end, while owning services and APIs backed by PostgreSQL.

You’ll collaborate with the CTO, data science and product teams to solve complex problems, deploy to AWS with infrastructure as code, and help shape the product as the company scales in a