Senior Solutions Architect - AI-Powered Platform Leader

Holt Recruitment Group; Greater London; On-site; GBP 110,000 - 150,000; Full time

Job summary

Holt Recruitment Group is seeking a Senior Solutions Architect to shape data-driven software platforms for commercial operations and growth. This hands-on role blends software architecture, full-stack development and cloud infrastructure, with opportunities to work on AI-powered features and production-grade deployments.

You'll lead multi-component system design, mentor engineers and collaborate with product, analytics and data teams to translate business needs into scalable technical solutions

Qualifications

• Extensive Python development experience, building and maintaining production applications.
• Strong AWS experience, particularly with Lambda, ECS/Fargate, S3 and API Gateway.
• Proven experience deploying and managing containerised applications using Docker.
• Strong SQL skills and experience working with data warehouses.
• Hands-on experience with Infrastructure as Code, particularly Terraform.
• Proficiency with Git, CI/CD pipelines and modern software delivery practices.
• Demonstrable experience designing and delivering multi-component software systems, from architecture through to production.
• Experience making architectural decisions and balancing technical trade-offs in a fast-paced environment.
• Strong problem-solving skills and the ability to communicate technical decisions to both technical and non-technical stakeholders.
• Modern web development using Next.js, React and TypeScript.
• Google Cloud Platform services, particularly BigQuery and Cloud Run.
• Enterprise authentication and authorisation, including SSO, SAML, OAuth and role-based access control.
• Designing and optimising applications that process large datasets at scale.
• Experience with B2B SaaS platforms, CRM systems or sales enablement tools.
• Scaling minimum viable products into enterprise-grade applications.
• Agile development methodologies and tools such as Jira.
• Full-stack development spanning cloud infrastructure, backend services and frontend interfaces.
• Mentoring engineers and establishing technical standards and best practices.
• Automated document generation, data visualisation or similar application capabilities.
• Integrating LLM APIs into production applications and developing AI-powered features.
• Familiarity with the Model Context Protocol (MCP), AI agent frameworks or tool-enabled LLM workflows.
• Experience developing customer onboarding, self-service or customer success platforms.

Responsibilities

• Lead the architecture and development of scalable, multi-component software applications across the full stack.
• Design and implement backend services, APIs, frontend interfaces and integrations between enterprise systems.
• Develop production applications using Python, TypeScript and modern web technologies.
• Architect cloud-based solutions using AWS services, including Lambda, ECS/Fargate, S3 and API Gateway.
• Design and manage infrastructure using Terraform, Docker and modern CI/CD pipelines.
• Evaluate new technologies through proof-of-concepts and make informed architectural recommendations.
• Explore and implement AI-powered capabilities, including LLM integrations, agent frameworks and tool-augmented workflows.
• Optimise application performance, reliability, security and maintainability across high-volume data environments.
• Work closely with product, analytics, data engineering and commercial stakeholders to translate business needs into technical solutions.
• Define integration patterns, authentication and authorisation approaches, API contracts and scalable system architectures.
• Support the evolution of early-stage applications into robust platforms suitable for enterprise deployment.
• Provide technical guidance, mentor engineers and promote software engineering best practices.

Skills

Python

AWS

SQL

Docker

Terraform

Git

TypeScript

LLM integrations

Tools

Docker

Terraform

API Gateway

S3

Lambda

Next.js

React

TypeScript

Job description

Holt Recruitment Group is seeking a Senior Solutions Architect to shape data-driven software platforms for commercial operations and growth. This hands-on role blends software architecture, full-stack development and cloud infrastructure, with opportunities to work on AI-powered features and production-grade deployments.

You'll lead multi-component system design, mentor engineers and collaborate with product, analytics and data teams to translate business needs into scalable technical solutions