Experis UK
Senior/Principal AI Software Engineer

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AI Principal/Senior Software Engineer x2
Inside IR35 Contract
Rate: up to £800/day
Location: Remote/London
Duration: 6 months initially
Description
The opportunity
This is a contract engagement supporting a major Information Security AI transformation, a large programme that is modernising and automating the security operating model with agentic AI.
We are looking for both a Principal and Senior hands-on engineer to drive the build of a portfolio of agentic AI security applications, defining the solution architecture and contributing to the most complex components of the solution and system design.
You would work with a good degree of autonomy to deliver a defined set of outcomes across complex and current problems in AI security. You will collaborate with software and solution architects to define target architectures, coordinate the workloads of software engineers, and remain hands-on throughout the development lifecycle.
The role will have a strong software engineering focus, building AI-native applications and agentic solutions, primarily within a Python and AWS environment.
What You Would Deliver
- Technical leadership of the build, turning target architecture into production-quality software across a portfolio of agentic AI applications, APIs and services.
- Engineering standards, DevSecOps practices and a secure development lifecycle, integrated with the organisation's established central CI/CD platform, pipelines and golden paths.
- An AI-native software delivery operating model built on agentic harnesses and automation.
- Reusable frameworks, libraries and platform capabilities that accelerate delivery and ensure security is built in by default.
- Delivery of the most complex components and integrations across the agentic AI roadmap.
- Contribution to solution and low-level architecture, working alongside established software and solution architects.
- Technical assurance through code review, quality standards and mentoring to raise engineering standards across the wider team.
- Hands-on development of AI-native applications incorporating agentic logic.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
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Skills And Experience
- Extensive practical software engineering experience, including technically leading engineering teams and delivering complex, production-quality systems at scale.
- Deep, current experience building agentic AI applications, including LLM orchestration, Retrieval Augmented Generation (RAG), tool and function calling, MCP, memory, evaluation and agent harnesses.
- Strong Python software engineering experience.
- Demonstrable knowledge and experience with LangGraph and agentic development frameworks.
- Experience implementing or evolving engineering standards, DevSecOps practices and secure development lifecycles.
- Strong understanding of CI/CD platforms, pipelines and modern software engineering practices.
- Experience defining or evolving an engineering operating model, ideally an AI-native model built around agentic harnesses and automation.
- Experience delivering solutions on AWS, ideally with Amazon Bedrock, containers and Infrastructure as Code.
- A solid grounding in secure-by-default engineering, observability and production operability.
- Practical knowledge of AI security practices, including the OWASP Top 10 for LLM and Generative AI applications and OWASP guidance for agentic AI.
- Previous experience working within Information Security or Security engineering environments would be beneficial.
- Frontend development experience would be advantageous.


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Working arrangements
Flexible approach to onsite working, with remote working available depending on experience and suitability for the role.
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