Software AI Engineer

Squareone; United Kingdom; Hybrid; GBP 80,000 - 107,000; Full time

Job summary

Square One Resources Limited is seeking an experienced Software AI Engineer to design, develop and support production-grade AI solutions for a Financial Services client. The role focuses on building Python applications, AI agents, and LLM integrations in a production environment.

You will contribute across the development lifecycle, from solution design to deployment and production support, including building data pipelines with Spark, using Databricks, and implementing robust testing and

Qualifications

• Software engineering experience with development, testing and production support.
• Strong Python skills; experience with Java, TypeScript or SQL.
• Hands-on experience building LLM applications, including RAG and agents.
• APIs, event-driven architectures and enterprise integrations.
• Kubernetes, containers, CI/CD, security and resilience.
• Experience with Spark or similar data-processing tech.
• Understanding AI testing, evaluation, monitoring and deployment.
• Financial services experience in a regulated enterprise environment.

Responsibilities

• Develop and maintain AI agents, orchestration frameworks and automated workflows.
• Build MCP servers for secure integration with enterprise systems.
• Develop production-quality Python applications, APIs and backend services.
• Create RAG pipelines and enterprise search with source attribution.
• Build data pipelines and AI workflows using Databricks and Spark.
• Support model development, testing, deployment and MLOps processes.
• Create Copilot experiences with human-in-loop review.
• Implement testing, monitoring and observability for production reliability.
• Improve development efficiency through AI-assisted engineering tools.

Skills

Python

LLM apps

APIs

Kubernetes

Spark

Data pipelines

MLOps

Testing & observability

Financial services

Job description

Software AI Engineer
Hybrid - Regional Offices
Inside IR35
November start
Contract - 2 Months

We are looking for an experienced Software AI Engineer to design, develop and support production-grade AI solutions for a Financial Services client. The role will focus on building Python applications, AI agents, LLM integrations and automated workflows across enterprise systems. You will contribute throughout the development lifecycle, from solution design through to deployment and production support. Financial Services experience is preferred.

Key Responsibilities:

• Develop and maintain AI agents, orchestration frameworks and automated workflows.
• Build MCP servers to enable secure integration with enterprise systems and data sources.
• Develop and maintain production-quality Python applications, APIs and backend services.
• Build RAG pipelines and enterprise search capabilities with accurate source attribution.
• Develop data pipelines and AI workflows using Databricks and Apache Spark.
• Support model development, testing, deployment and MLOps processes.
• Create Copilot experiences with human-in-the-loop review capabilities.
• Implement testing, monitoring and observability to ensure reliable production performance.
• Improve development efficiency through AI-assisted engineering tools and process automation.

Essential Skills and Experience:

• Software engineering experience, including development, testing and production support.
• Strong Python skills, with experience in Java, TypeScript or SQL.
• Hands-on experience building LLM applications, including RAG, prompt engineering, tool calling and AI agents.
• Experience with APIs, event-driven architecture and enterprise integrations.
• Knowledge of Kubernetes, containers, CI/CD, security and application resilience.
• Experience with Apache Spark or similar data-processing technologies.
• Understanding of AI testing, evaluation, monitoring and deployment.
• Financial Services experience, ideally within a regulated enterprise environment.

Disclaimer

Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.

Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.