Server-Side C# Engineer – Build at Scale, Influence Architecture, Work Flexibly

JR United Kingdom; Derby; On-site; GBP 60,000 - 80,000; Full time

Job summary

A forward-thinking tech company seeks a Server-Side C# Engineer to shape its next-gen SaaS platform. You will tackle complex engineering challenges, contribute to architecture, and work within a senior-led team on innovative microservices solutions, all while enjoying flexible hours and a focus on quality.

Benefits

Flexible hours

Opportunity to contribute to system evolution

Relaxed and mature work environment

Engaging problem-solving tasks

Qualifications

• Approximately 8 years of commercial server-side experience in C#/.NET.
• Practical experience with Event Sourcing and DDD in production.
• Proficiency in asynchronous messaging systems like RabbitMQ or Kafka.

Responsibilities

• Developing a greenfield microservices platform centered around CQRS and Event Sourcing.
• Contributing to architectural decisions within an agile team.
• Mentoring and training other engineers.

Skills

C#/.NET

Event Sourcing

DDD

Messaging Tech

Job description

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Server-Side C# Engineer – Build at Scale, Influence Architecture, Work Flexibly, Derby

**Location:** Derby, United Kingdom

**Job Category:** Other

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**EU work permit required:** Yes

**Job Views:** 4

**Posted:** 31.05.2025

**Expiry Date:** 15.07.2025

Job Description:

Our client is on a mission to simplify complex delivery infrastructure by building a next-generation SaaS platform that is scaling internationally. With the UK launch complete and a US rollout underway, they are tackling significant engineering challenges and delivering powerful technology at scale.

They are seeking a highly skilled server-side C# engineer to join their lean, senior-led engineering team. The role involves working on a platform that pushes boundaries in event-driven architecture, distributed systems, and customer-first delivery.

What You’ll Work On:

• Developing a greenfield microservices platform (24+ services) centered around CQRS, Event Sourcing, and DDD
• High throughput transactional systems processing tens of thousands of requests per hour
• Real-time tracking and customer self-service layers designed to minimize support tickets
• Contributing to architectural decisions within a technically mature, agile team

Tech Snapshot (and What You Must Know Cold):

• C#/.NET: Approximately 8 years of commercial server-side experience, ideally across multiple codebases and domains. You will also mentor and train other engineers—this is a hands-on leadership role.
• Event Sourcing & DDD: Practical experience implementing, supporting, and evolving these patterns in production environments.
• Messaging Tech: Proficiency in at least one asynchronous message-based system (e.g., RabbitMQ, Azure Service Bus, Kafka, etc.)

What You'll Bring:

• A test-first, craft-focused engineering mindset
• Strong architectural instincts with a collaborative, debate-positive attitude
• Comfort with modern engineering workflows and continuous delivery practices

Why You’ll Love It:

• Interesting problems: Working with event sourcing at scale, complex routing logic, and fast data decisions, beyond simple CRUD tasks
• Input into architecture: Every engineer contributes to system evolution
• Relaxed, mature setup: Flexible hours and a team that values quality code over clock-watching
• Modern stack: Using cutting-edge tools in real-world applications