> Markdown version of [/jobs/ext/2930025-senior-c-developer](https://www.wearedevelopers.com/jobs/ext/2930025-senior-c-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior C# Developer

- **Company:** Clio
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £81,600.0 - £110,400.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, HTML, JavaScript (Programming Language), .NET Framework, Artificial Intelligence, HTML5, Microsoft Azure, C Sharp (Programming Language), Cascading Style Sheets (CSS), Cloud Computing, Code Review, Distributed Systems, Memory Management, Elasticsearch, Neo4j, Object-Oriented Software Development, Open Source Technology, Performance Tuning, Query Optimization, Power BI, Software Engineering, SQL Databases, Pulumi, Indexer, Containerization, Infrastructure Automation Frameworks, Influxdb, Event Store, Microservices
- **Published:** September 16, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=eeccb1007fa20330

## About the Role

You are an experienced engineer who enjoys solving complex problems and delivering high-quality software. You value collaboration, curiosity, and learning as much as coding. You understand the importance of clean code, maintainable architecture, and system performance, and you want to work in a culture where your contributions matter and your growth is supported., * Strong experience with C#/.NET , including async/await, memory management, and resource handling.

 * Deep knowledge of SQL Server , including query optimization, indexing, execution plans, and performance tuning.
 * Solid understanding of HTML5, CSS3, Flexbox, and CSS Grid .
 * 5+ years of varied software engineering experience, ideally including scalable systems.
 * Experience with distributed systems, monoliths, or microservices.
 * Demonstrate a keen interest in improving your craft by using AI, * Exposure to ElasticSearch, Event Store, Neo4j, InfluxDB, Seq, Power BI .
 * Experience with micro-ORMs such as PetaPoco.
 * Contributions to open-source projects or personal coding projects.
 * Cloud infrastructure experience, especially Azure .
 * Strong grasp of clean code principles, OOP design, and software patterns.

## Description

* Developing full-stack features using C#, .NET, HTML, CSS, JavaScript, and SQL .
 * Writing and optimizing hand-crafted SQL queries to ensure high performance.
 * Designing and implementing event-driven workflows using Event Store.
 * Enhancing search and data projections with ElasticSearch .
 * Modernizing components of the platform to .NET 8+ and Svelte.js , including containerized deployments.
 * Automating infrastructure with Pulumi and Azure DevOps .
 * Participating in architecture discussions, code reviews, and maintaining engineering best practices.


## Related Videos

- [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web)
- [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library)
- [Practical tips for keeping your C# code base clean](https://www.wearedevelopers.com/videos/100149-practical-tips-for-keeping-your-c-code-base-clean)
- [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. Grogg](https://www.wearedevelopers.com/videos/1806-nolojs-avoiding-javascript-cruft-with-html-and-css-aaron-t-grogg)
- [Can SVG be fast? Rendering a scatter chart with over 10k points](https://www.wearedevelopers.com/videos/100299-can-svg-be-fast-rendering-a-scatter-chart-with-over-10k-points)
- [Is it still C#? Practical systems programming with .NET (war stories included)](https://www.wearedevelopers.com/videos/100138-is-it-still-c-practical-systems-programming-with-net-war-stories-included)

## Related Articles

- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)
- [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)
- [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix)
- [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss)
- [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk)