Core Backend Developer

Thrive IT Systems; Sheffield; On-site; GBP 65,000 - 90,000; Full time

Job summary

Thrive IT Systems is seeking an experienced Python Developer to build scalable backend services, REST APIs, and Generative AI-powered applications. The ideal candidate will master Python frameworks, LLM integration, cloud-native development, and secure coding practices.

You will collaborate across teams to design robust data models, implement CI/CD pipelines, and apply performance optimization, testing with PyTest, and modern DevOps tooling.

Qualifications

• Strong Python development experience with Django, Flask, or FastAPI.
• Backend development, REST APIs, OOP, software design principles, PyTest, and Git.
• Generative AI, LLM APIs, RAG, embeddings, vector databases, prompt engineering, and AI guardrails.
• SQL/NoSQL databases, data modeling, and query optimization.
• AWS/Azure/GCP, Docker, and CI/CD pipeline architecture.
• Authentication, authorization, secrets management, and secure coding practices.

Responsibilities

• Develop scalable backend services and REST APIs.
• Integrate Generative AI and LLM APIs into applications.
• Ensure security and implement secure coding practices.
• Collaborate on cloud-native development and CI/CD pipelines.

Skills

Python development

Django

Flask

FastAPI

REST APIs

OOP

PyTest

Git

Generative AI

LLM APIs

RAG

Embeddings

Vector databases

Prompt engineering

AI guardrails

SQL/NoSQL

Data modeling

Query optimization

AWS

Azure

GCP

Docker

CI/CD

Authentication

Authorization

Secrets management

Secure coding

Kubernetes

Tools

Kubernetes

CI/CD tooling

Job description

Job Description

We are looking for an experienced Python Developer to build scalable backend services, REST APIs, and Generative AI-powered applications. The ideal candidate should have expertise in Python frameworks, LLM integration, cloud-native development, database management, CI/CD, and application security.

Required Skills:

• Strong Python development experience with Django, Flask, or FastAPI.
• Backend development, REST APIs, OOP, software design principles, PyTest, and Git.
• Generative AI, LLM APIs, RAG, embeddings, vector databases, prompt engineering, and AI guardrails.
• SQL/NoSQL databases, data modeling, and query optimization.
• AWS/Azure/GCP, Docker, and CI/CD pipeline architecture.
• Authentication, authorization, secrets management, and secure coding practices.

Good-to-Have Skills:

• React, TypeScript, JavaScript, and full-stack development.
• Kubernetes, monitoring, and observability tools.
• Experience in banking, financial services, or other regulated industries.

Mandatory Skills:

Python, Django, Flask, Docker, CI/CD Architecture.

Preferred Skill:

Python Cloud-Native Development.