Senior Software Engineer

Lorien; United Kingdom; Remote; GBP 65,000 - 85,000; Full time

Job summary

A tech recruitment firm is seeking a Senior Software Engineer to build scalable, AI-powered solutions. The role involves backend and frontend development with Python and React/Next.js, as well as AI integration and data engineering. Candidates should have over 5 years of full-stack experience, strong AWS skills, and a proactive mindset. This is a remote role for candidates residing in the UK.

Qualifications

• 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.

Responsibilities

• Build and maintain scalable APIs and services using Python (FastAPI).
• Develop responsive, high-performance user interfaces with React/Next.js.
• Connect to LLMs and ML services, supporting prompt engineering.
• Handle structured and unstructured data, build ingestion pipelines.
• Influence technical decisions and contribute to scalable design.
• Promote best practices in testing, CI/CD, code reviews.
• Explore and recommend new tools, frameworks, and approaches.

Skills

Backend Development

Frontend Development

AI Integration

Data Engineering

Architecture & Design

Code Quality

Innovation

Tools

Python

React/Next.js

AWS

Docker

ECS

Job description

Overview

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.