Backend Developer

VE3

London, UK

1 day ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Working hours

Regular working hours

Job source

www.collegerecruiter.com

Tech stack

Application Programming Interfaces (APIs) Agile Methodology Amazon Web Services Microsoft Azure Cloud Computing Information Technology Consulting Continuous Integration Cross-Origin Resource Sharing (Ajax Programming) Data Validation Database Design DevOps Django Web Framework

+35 more

Amazon DynamoDB Python (Programming Language) PostgreSQL MongoDB Node.Js NoSQL OAuth Performance Tuning RabbitMQ Prometheus Swagger SQL Databases Management of Software Versions Openapi Data Logging Google Cloud Flask (Web Framework) Delivery Pipeline Cross-Site Scripting (XSS) Backend Rate Limiting Fastapi Containerization Git Flow Integration Tests Kubernetes Information Technology Graphql Celery Front End Software Development Api Design NestJS Restful APIs Docker Microservices

Job description

Overview

Location: City Of London, England, United Kingdom

We are seeking an experienced Backend Developer to design, develop, and maintain scalable backend services and REST APIs using Python and Node.js. You will work closely with product, front-end, and DevOps teams to deliver high-performance, secure, and reliable systems.

Responsibilities

Build RESTful APIs and microservices using Node.js (Express/NestJS) and/or Python (FastAPI/Django/Flask)
Design and manage relational and NoSQL databases (PostgreSQL, MongoDB)
Implement user authentication and authorization (OAuth2, JWT)
Integrate with 3rd-party APIs and external services
Optimize system performance and monitor API uptime
Write unit/integration tests
Collaborate on DevOps, CI/CD, and deployment workflows

Required Skills

Strong experience with backend development in Node.js and/or Python
API design best practices (versioning, error handling, rate limiting)
Database design and querying (SQL, MongoDB, or DynamoDB)
Experience with containerization (Docker/Kubernetes) and API documentation (Swagger/OpenAPI)
Knowledge of security principles (input validation, CORS, XSS, etc.)
Git-based workflows and agile development practices

Nice to Have

Experience with GraphQL
Task queues and async jobs (Celery, BullMQ, RabbitMQ)
Familiarity with cloud platforms (AWS, GCP, Azure)
Logging and monitoring (ELK, Prometheus, etc.)

Soft Skills

Strong problem-solving mindset
Clear documentation and communication skills
Team player with the ability to work independently

Seniority level

Associate

Employment type

Full-time

Job function

Information Technology

Industries

IT Services and IT Consulting

Requirements

Strong experience with backend development in Node.js and/or Python
API design best practices (versioning, error handling, rate limiting)
Database design and querying (SQL, MongoDB, or DynamoDB)
Experience with containerization (Docker/Kubernetes) and API documentation (Swagger/OpenAPI)
Knowledge of security principles (input validation, CORS, XSS, etc.)
Git-based workflows and agile development practices, * Experience with GraphQL
Task queues and async jobs (Celery, BullMQ, RabbitMQ)
Familiarity with cloud platforms (AWS, GCP, Azure)
Logging and monitoring (ELK, Prometheus, etc.)

Soft Skills