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Back End Developer

Back End Developer

On site

London, United kingdom

£ 450 /day

Freelance

16-12-2025

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Skills

C# TypeScript GitHub Agile methodologies Architecture Software Development Agile

Job Specifications

Back End Developer
Duration - until 12/10/2026
Rate - £400-450 per day - umbrella only
Location - London, 1-2 days every 2 weeks.

As a Context Engineer in our Development team, you'll collaborate closely with the Dev Lead to pioneer and apply "Context Engineering"-the art and science of curating high-quality AI contexts for large-scale software projects. You'll help deliver on our current initiatives while integrating this practice into Enterprise Design Thinking methodologies, ensuring AI-assisted workflows enhance ideation, empathy mapping, and iterative prototyping across multidisciplinary teams.
Strong foundation in software development with C# and TypeScript.
Experience with AI/LLM concepts (eg, prompt engineering, RAG).
Analytical mindset for assessing sufficiency (relevance, completeness, freshness) and mitigating risks like hallucinations.
Focus on Clean Architecture and Clean Code principles.
Familiarity with Enterprise Design Thinking or Agile methodologies.
Knowledge of code quality tools (eg, linters, etc.) and nonfunctional standards (eg, WCAG 2.2, OWASP).
Experience with AI coding assistants like GitHub Copilot or Cursor.
Excellent collaboration skills for multidisciplinary teams.
All profiles will be reviewed against the required skills and experience. Due to the high number of applications we will only be able to respond to successful applicants in the first instance. We thank you for your interest and the time taken to apply!

About the Company

Experis is a global leader in IT professional resourcing, project solutions, and managed services specializing in Business Transformation, Enterprise Applications, Cloud and Infrastructure, Digital Workspace and Cyber Security. As digital transformation and acute skills shortages in tech continue unabated, Experis provides talent with the powerful combination of in-demand technical skills together with the soft skills that are critical for business success. We can connect you to individuals with a specific skill set, manage ... Know more