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Temporary/Casual
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C# Developer

CEI England Limited T/A CEI GBIsleworth, West London🇬🇧United KingdomPosted 17 Sept 2026

Why This Role Stands Out

This hybrid C# Developer role offers a fantastic opportunity to grow your skills with modern technologies and contribute to scalable applications in an Agile environment. You'll thrive here if you're a passionate developer eager to collaborate and make an impact. Apply today to join a dynamic team and advance your career.

Quick Overview

Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
Hybrid
Location
Isleworth, West London, United Kingdom
Posted
Yesterday
MicroservicesOracleAWSAgileC#GitGrafanaJavaKafkaPrometheusREST

Job Description

Senior C# Developer
Location: Osterley, UK

About the Role

We are looking for a talented and passionate Software Engineer to join our engineering team based in Osterley. This is an exciting opportunity to work on modern, scalable applications using the latest technologies across backend, frontend, cloud, and DevOps. You will play a key role in designing, developing, and supporting high-performance applications while collaborating with cross-functional teams in an Agile environment.

Key Responsibilities
  • Design, develop, and maintain scalable backend services using Java and/or C#.
  • Build modern, responsive user interfaces using ReactJS.
  • Develop and support RESTful APIs and microservices.
  • Design, optimize, and maintain database solutions using Oracle and Couchbase.
  • Implement and support event-driven architectures using messaging platforms such as Kafka, ActiveMQ, or AmazonMQ.
  • Monitor application health using observability tools, including logs, metrics, dashboards, and alerting.
  • Build and maintain CI/CD pipelines to enable automated testing and deployments.
  • Troubleshoot, debug, and resolve production issues to ensure high system availability and performance.
  • Collaborate with Product Owners, Architects, QA Engineers, and fellow developers to deliver high-quality software.
Required Skills & Experience
  • Strong commercial experience with Java and/or C# (experience in both is highly desirable).
  • Strong frontend development experience with ReactJS.
  • Proven experience building and supporting REST APIs and microservices.
  • Experience working with relational and NoSQL databases, particularly Oracle and Couchbase.
  • Experience with messaging and event-driven technologies such as Kafka, ActiveMQ, or AmazonMQ.
  • Good understanding of observability and monitoring tools, including Prometheus, Grafana, and AWS CloudWatch.
  • Experience with CI/CD pipelines, Concourse, and Git-based development workflows.
  • Strong troubleshooting and production support experience.
  • Knowledge of Agile software development methodologies.
  • Excellent analytical, problem-solving, and communication skills.

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