Senior .NET Backend Developer

Oscar Associates (UK) Ltd

York, UK

11 days ago

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Role details

Contract type

Permanent contract

Employment type

Part-time (≤ 32 hours)

Experience level

Expert

Working hours

Shift work

Job source

www.totaljobs.com

Tech stack

ASP.NET .NET Framework Computer-Aided Design Application Programming Interfaces (APIs) Automation of Tests C Sharp (Programming Language) Software Quality Relational Databases Dependency Injection DevOps Distributed Systems Elasticsearch

+16 more

PostgreSQL Enterprise Messaging Systems Software Architecture RabbitMQ Redis Prometheus Software Engineering SQL Databases Systems Integration Datadog Grafana Backend Solid Principles Graphql Restful APIs Docker

Job description

This is a hands-on senior engineering position, working closely with product and engineering teams, you’ll help drive technical direction, champion best practice and contribute to the evolution of a high-performing development function., * Design, develop and maintain backend services and APIs using C# and modern .NET / ASP.NET Core.

Contribute to architectural decisions across backend services, integrations and data.
Modernise legacy applications into scalable, maintainable web-based solutions.
Collaborate with cross-functional teams to deliver robust technical solutions.
Promote engineering best practices, including automated testing, code quality and security.
Investigate and resolve complex production issues.
Support technical leadership through mentoring, knowledge sharing and architectural guidance.

Requirements

Commercial experience with C#, .NET and ASP.NET Core.
Strong background developing scalable APIs and backend services.
Experience designing software architecture and distributed systems.
Solid SQL and relational database knowledge.
Strong understanding of software design principles, dependency injection and automated testing.
Experience working on complex or legacy software modernisation projects.
Excellent communication skills with the ability to influence technical decisions.

Desirable Skills

Docker and Kubernetes.
PostgreSQL, Redis or Elasticsearch.
GraphQL.
RabbitMQ or other messaging technologies.
CI/CD pipelines and modern DevOps practices.
Observability tooling such as Grafana, OpenTelemetry or Prometheus.
Experience using AI-assisted development tools within the software development lifecycle.

Benefits & conditions

Hybrid working (2 days per week in York).
Flexible working hours.
Opportunity to influence architecture and technical strategy.
Modern technology environment with investment in engineering tooling.
Excellent benefits package.

Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.

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About the company

We’re partnering with an established technology business undergoing a significant platform modernisation programme and are looking to appoint a Senior .NET Backend Developer to play a key role in shaping the future of its engineering capability.