Backend Engineer - FinTech AI Platform

Carousel Consultancy; Greater London; Híbrido; GBP 90.000 - 100.000; Jornada completa

Descripción de la vacante

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.

Formación

• 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.

Responsabilidades

• 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.

Herramientas

Node.js

Express

Python

AWS

RESTful APIs

Event-driven design

CI/CD

Infrastructure as Code

Containerised workloads

AI/ML integration

Descripción del empleo

BackendEngineer - Rapid-growthFinTech AI Platform -London, Hybrid or UK/European Remote Working-up to £100k + equity

We have an incredible opportunity for skilled, passionate and experienced Backend Engineers,with production experience with languages such as Node.js, Express, Python; familiarity with AWS (e.g. ECS/EKS, Lambda, SQS, EventBridge, RDS/DynamoDB, S3) and experience designing RESTful and event-driven APIs, to join a fantastic FinTech AI platform on a hybrid working basis as soon as possible.

The Opportunity:

This is the perfect opportunity to join a successful FinTech, in a crucial role that is critical to the product’s success and the company’s future.

TheBackend Engineer will need to have a passion for performance, a growth mindset and the drive to continuously learn, develop and improve. Our client encourages a learning culture and they embrace cutting-edge technology which will allow you to hone relevant, in-demand skills.

They are a rapidly scaling company, so this is a prime opportunity to get your foot in the door and join a dynamic, high-performance team on an exciting trajectory!

Our client is offering an annual salary up to £100k, dependent on experience and skillset, plus equity.

This is a London, Hybrid or UK/European Remote Working role.

What we’re looking for:

• Graduate with a relevant degree in Computer Science / Engineering or similar, with c1+ years’ relevant work experience, ideally within FinTech, TMS or SaaS (including internships)
• Proven production experience building and operating backend services (e.g. Node.js/Express, Python), with a technology-agnostic mindset and the ability to adapt to evolving stacks
• Familiarity with AWS (i.e. ECS/EKS, Lambda, SQS, EventBridge, RDS/DynamoDB, S3)
• Experience designing RESTful and event-driven APIs
• Relational data modelling skills (financial or transactional systems advantageous)
• 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
• Comfortable building systems that consume AI outputs and execute deterministic actions
• Ability to design safety, audit and rollback mechanisms around automated execution
• Understanding of the role context plays in designing a modern AI-native system
• Hands-on experience deploying and operating Node.js services on AWS
• Experience with CI/CD, infrastructure-as-code and containerised workloads
• Drive to improve as an Engineer - eager to work with peers who push and support each other to continuously improve
• Strong communication skills and the ability to liaise at all levels
• Collaborative nature - ability to work independently and as part of a team
• Ability and desire to work in a fast-paced, rapid-growth environment
• Highly ambitious, driven and focused