Full Stack Developer

Q1 Technologies, Inc.; Greater London; On-site; GBP 92,000 - 148,000; Full time

Job summary

Q1 Technologies, Inc. in London (onsite) seeks an experienced Full Stack Engineer to design, develop, and maintain scalable web apps using Python and React. You will build RESTful APIs, microservices, and frontend interfaces while collaborating across Product, Architecture, DevOps, and QA teams.

The ideal candidate has hands-on backend and frontend expertise, including FastAPI/Flask/Django, and a track record of delivering secure, scalable systems in Agile environments.

Qualifications

• 5+ years of software development experience.
• Bachelor's degree in Computer Science or related field.
• Proficient in Python and React.

Responsibilities

• Design, develop, and maintain web applications using Python and React.
• Build scalable RESTful APIs and backend services.
• Develop responsive and user-friendly frontend interfaces using React.js.
• Collaborate with Product Owners, Architects, DevOps, and QA teams.
• Optimize application performance, security, and scalability.
• Participate in code reviews and ensure best coding practices.
• Work within Agile/Scrum development environments.
• Troubleshoot and resolve production issues.

Skills

Python

React.js

REST API design

Microservices

OOP

SQL

Unit testing

Education

Bachelor's degree in Computer Science or related field

5+ years of software development experience

Tools

MongoDB

Docker

Kubernetes

Git/GitHub/GitLab

FastAPI

Flask

Django

Job description

Here's the job details about this opportunity.

Job title-Full Stack Engineer

Job type- Contract role with inside IR35

Location-London-UK-On-site

We are looking for an experienced Full Stack Developer with strong expertise in Python and React.js to design, develop, and maintain scalable web applications. The ideal candidate should have hands-on experience building microservices, REST APIs, cloud-native applications, and modern frontend solutions.

Key Responsibilities

• Design, develop, and maintain web applications using Python and React.
• Build scalable RESTful APIs and backend services.
• Develop responsive and user-friendly frontend interfaces using React.js.
• Collaborate with Product Owners, Architects, DevOps, and QA teams.
• Optimize application performance, security, and scalability.
• Participate in code reviews and ensure best coding practices.
• Work within Agile/Scrum development environments.
• Troubleshoot and resolve production issues.

Required Skills

• Strong experience with Python
• Experience with FastAPI, Flask, or Django
• REST API and Microservices development
• Object-Oriented Programming (OOP)
• SQL and database design

Frontend

• Strong knowledge of React.js
• HTML5, CSS3

Databases

• MongoDB (preferred)
• Docker and Kubernetes
• Git/GitHub/GitLab

Good to Have

• Financial Services or Banking domain experience
• Experience with event-driven architectures
• Kafka or RabbitMQ
• Terraform or Infrastructure as Code
• Unit testing frameworks (PyTest, Jest)

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field.
• 5+ years of software development experience.
• Excellent communication and stakeholder management skills.

Preferred Candidate Profile

• Strong problem-solving and analytical skills.
• Experience working in enterprise-scale environments.
• Ability to work independently and in cross-functional teams.