Senior Software Engineer

Lorien; Leeds; Remote; GBP 125,000 - 150,000; Full time

Job summary

A leading technology staffing firm is seeking a Senior Software Engineer to help shape the technical vision and build scalable, AI-powered solutions. This role involves backend development with Python, frontend work with React/Next.js, and integration with AI services. The ideal candidate has over 5 years of experience and must reside in the UK with full work rights. This position is fully remote.

Qualifications

• 5+ years in full-stack development.
• Strong skills in Python and React/Next.js.
• Experience with AI/ML APIs and data engineering.
• Solid understanding of secure coding and data privacy.

Responsibilities

• Build and maintain scalable APIs and services using Python.
• Develop responsive, high-performance user interfaces.
• Connect to LLMs and ML services for AI integration.
• Handle structured and unstructured data, building ingestion pipelines.
• Influence technical decisions and contribute to system design.
• Promote best practices in testing and documentation.
• Explore and recommend new AI development tools.

Skills

Python

React/Next.js

AWS

AI/ML APIs

Data engineering

Docker

ECS

Job description

Lorien are partnering with an exciting start up as they build an exciting platform from the ground up and they are going through an exciting period of growth.

We\'re supporting them in hiring a Senior Software Engineer to help shape the technical vision and build scalable, AI-powered solutions from the ground up. This is a hands-on role where you\'ll work across the stack, solve real customer problems, and play a key part in their growth journey.

What You\'ll Do

• Backend Development: Build and maintain scalable APIs and services using Python (FastAPI), integrating with AI models and data platforms.
• Frontend Development: Develop responsive, high-performance user interfaces with React/Next.js.
• AI Integration: Connect to LLMs and ML services (e.g., OpenAI, AWS Bedrock), supporting prompt engineering, embeddings, and vector databases.
• Data Engineering: Handle structured and unstructured data, build ingestion pipelines, and design efficient schemas (Postgres/NoSQL).
• Architecture & Design: Influence technical decisions and contribute to scalable, modular system design.
• Code Quality: Promote best practices in testing, CI/CD, code reviews, and documentation.
• Innovation: Explore and recommend new tools, frameworks, and approaches in full-stack and AI development.

Experience

• 5+ years in full-stack development
• Strong skills in Python, React/Next.js, and cloud (AWS)
• Experience with AI/ML APIs, vector search, and data engineering
• AWS and containerised deployments (Docker & ECS)
• Solid understanding of secure coding and data privacy
• A proactive, ownership-driven mindset and great communication

*The role is on a remote basis with candidates must reside and have full right to work status in the UK

Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy.