Senior AI Software Developer

Oscar; Manchester; On-site; GBP 60,000 - 90,000; Full time

Job summary

Oscar is seeking an experienced Software Developer to help bring AI into daily operations by building intelligent applications and bespoke software solutions. You will own projects from concept to deployment and work on AI-powered features that solve real business problems.

The role covers backend development, APIs, data integration and architecture decisions, with opportunities to experiment with emerging AI tools and build end-to-end solutions that scale as the business grows.

Qualifications

• Strong software development background with Python in backend systems.
• Experience integrating AI models and LLMs into production apps.
• Experience building REST APIs and external data sources.
• Ability to design scalable, reliable applications and make technical decisions.

Responsibilities

• Design, develop and maintain backend software with system integrations.
• Build AI-powered features using LLMs and document processing.
• Develop RAG pipelines connecting LLMs to internal data.
• Build and integrate APIs to connect apps, databases and CRMs.
• Own projects from requirements through testing and deployment.
• Collaborate with stakeholders to translate business problems into solutions.
• Improve reliability, performance and scalability of apps.
• Explore new AI tools to add real business value.

Skills

Python

Backend APIs

AI & LLMs

RAG

App architecture

Data integrations

End-to-end delivery

Problem-solving

Job description

We're looking for an experienced developer to join a growing business looking to bring AI further into its day-to-day operations through the development of intelligent applications and bespoke software solutions.

Looking for someone with a strong interest in AI who can combine solid software engineering skills with experience building practical, AI-powered tools. You'll have the opportunity to work on new projects from the ground up, experimenting with emerging technologies and turning ideas into solutions that solve real business problems.

This is a varied role where you'll have genuine ownership over what you build, from exploring new AI capabilities and designing technical solutions through to developing, integrating and deploying applications.

THE ROLE

• Design, develop and maintain software applications, with a strong focus on backend development and system integrations.
• Build AI-powered features and applications using LLMs, including intelligent document processing, information extraction and automated workflows.
• Develop retrieval-augmented generation (RAG) solutions that connect LLMs with internal data, documents and other knowledge sources.
• Build and integrate APIs to connect applications, databases, CRM platforms and third-party services.
• Develop automated workflows that combine traditional programming, business logic and AI capabilities.
• Contribute to technical architecture and make decisions around how applications and services are designed, built and integrated.
• Take ownership of projects from requirements gathering and technical design through to development, testing and deployment.
• Work closely with stakeholders to understand business challenges and translate them into effective software solutions.
• Improve the reliability, performance and scalability of existing applications and integrations.
• Explore new AI tools and technologies where they can add genuine value to the business.

WHAT WE'RE LOOKING FOR

We're looking for a well-rounded Software Developer with strong core development skills and the ability to apply these to AI-focused projects. You should be comfortable building software in your own right, rather than focusing solely on AI models or experimentation.

Experience across a combination of the following would be ideal:

• Software development: A solid background in developing and delivering applications, with strong programming fundamentals and experience writing clean, maintainable code.
• Python: Strong experience using Python for backend development, application logic, integrations or automation.
• Backend systems and APIs: Experience designing and building backend services, REST APIs and integrations between different systems and data sources.
• AI and LLMs: Practical experience integrating large language models into applications or developing AI-powered functionality.
• Retrieval-Augmented Generation (RAG): Experience building or implementing RAG pipelines that enable LLMs to retrieve and use relevant information from documents, databases or other knowledge sources.
• Application architecture: An understanding of how to design reliable, scalable applications and make appropriate technical decisions.
• Data and integrations: Experience working with databases, external APIs and structured or unstructured data.
• Problem-solving: The ability to understand business requirements and turn them into practical, well-designed technical solutions.
• End-to-end delivery: Confidence taking ownership of projects from initial concept through to implementation and ongoing improvement.

THE OPPORTUNITY

• The chance to lead the development of a new AI-driven automation platform.
• End-to-end ownership of projects, from architecture through to delivery.
• The opportunity to work closely with senior stakeholders and influence technical decisions.
• A varied role combining software development, AI, integrations and automation.
• The ability to make a tangible impact on how the wider business operates.
• A growing development roadmap with plenty of scope to introduce new ideas and solutions.