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

JR United Kingdom; Luton; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading company is looking for a highly skilled Server-Side C# Engineer to join their team in Luton. You will work on a next-generation SaaS platform that addresses significant engineering challenges in event-driven architecture. This role offers flexibility, a collaborative environment, and serious involvement in architectural decisions. Ideal candidates will have extensive experience with C# and modern engineering practices, including event sourcing at scale.

Benefits

Flexible hours

Collaborative environment

Input into architecture

Relaxed setup

Qualifications

• Approximately 8 years of commercial server-side experience.
• Must have commercial experience with Event Sourcing and DDD.
• Proficiency in at least one messaging technology.

Responsibilities

• Work on a greenfield microservices platform with no CRUD.
• Contribute to architectural direction in an agile team.
• Mentor and train other engineers in a hands-on role.

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, Luton, Bedfordshire

Client: [Client information missing]

Location: Luton, Bedfordshire, United Kingdom

Job Category: Other

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 and has built 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:

• A greenfield microservices platform (24+ services) built 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
• A technically mature, agile team where every developer contributes to architectural direction

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: Must have commercial 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

Why You’ll Love It:

• Interesting problems: Not just CRUD—think event sourcing at scale, complex routing logic, and fast data decisions
• Input into architecture: Every engineer is involved in shaping how the system evolves
• Relaxed, mature setup: No clock-watching—just flexible hours and a team of professionals who love great code
• Modern stack: Real-world use of cutting-edge tools—not just theory