Backend Engineer - FinTech AI Platform (Hybrid/London)

Carousel Consultancy; Greater London; Hybrid; GBP 90,000 - 100,000; Full time

Job summary

Carousel Consultancy is seeking a Backend Engineer to join a rapid-growth FinTech AI platform in London. Hybrid or UK/European remote working is available, with an annual salary up to £100k plus equity. You will work on scalable backend services using Node.js/Express and Python, deployed on AWS, and design RESTful and event-driven APIs.

The role emphasizes performance, learning, and collaboration in a fast-paced environment, offering growth and exposure to cutting-edge AI-enabled backend systems.

Qualifications

• Graduates with a relevant Computer Science/Engineering degree and c1+ years’ work experience.
• Proven production experience building and operating backend services (Node.js/Express, Python).
• Familiarity with AWS (ECS/EKS, Lambda, SQS, EventBridge, RDS/DynamoDB, S3).
• Experience designing RESTful and event-driven APIs.
• Relational data modelling skills; knowledge of transactional systems is a plus.
• Experience with concurrency, locking, idempotency and distributed consistency.
• Experience with message queues, background workers and workflow orchestration.
• Experience integrating AI/ML or decisioning services into backend platforms.

Responsibilities

• Develop, scale and operate backend services in a FinTech AI platform.
• Collaborate on API design and integration with AI outputs.
• Contribute to modern, secure, and auditable systems with rollback mechanisms.
• Work in a fast-paced, growth-focused environment with peers.

Tools

Node.js

Express

Python

AWS

RESTful APIs

Event-driven design

CI/CD

Infrastructure as Code

Containerised workloads

AI/ML integration

Job description

Carousel Consultancy is seeking a Backend Engineer to join a rapid-growth FinTech AI platform in London. Hybrid or UK/European remote working is available, with an annual salary up to £100k plus equity. You will work on scalable backend services using Node.js/Express and Python, deployed on AWS, and design RESTful and event-driven APIs.

The role emphasizes performance, learning, and collaboration in a fast-paced environment, offering growth and exposure to cutting-edge AI-enabled backend systems.