Senior .NET Backend Engineer — Contract

Jackalope Digital LLC; Greater London; Hybrid; GBP 85,000 - 120,000; Full time

Job summary

Flagstone is hiring a Senior Back End Engineer to drive large-scale backend systems in a cloud-first Azure environment. You will deliver high-quality, scalable services, lead architectural discussions, and collaborate with cross-functional teams to solve business challenges with technology.

The role emphasizes strong C#/.NET expertise, RESTful API design, and mentoring junior engineers, within a culture that values collaboration and continuous improvement.

Qualifications

• 7+ years of commercial development experience with C#/ .NET.
• Strong understanding of SOLID, EDA, and DDD.
• Experience designing RESTful APIs.
• Azure cloud development with a cloud-first approach.
• Proficient in TDD with NUnit, MSTest, or Selenium-based tests.

Responsibilities

• Develop and maintain high-quality backend services in a cloud-based Azure environment.
• Collaborate with cross-functional teams to solve business challenges through technology.
• Influence software architecture and engineering practices within the team.
• Coach and guide junior engineers and promote best practices in the squad.

Skills

C#/.NET

SOLID

EDA

DDD

REST API

Azure

TDD

NUnit

MSTest

Selenium

Emotional intelligence

Proactivity

Communication

Mentoring juniors

Job description

Flagstone is hiring a Senior Back End Engineer to drive large-scale backend systems in a cloud-first Azure environment. You will deliver high-quality, scalable services, lead architectural discussions, and collaborate with cross-functional teams to solve business challenges with technology.

The role emphasizes strong C#/.NET expertise, RESTful API design, and mentoring junior engineers, within a culture that values collaboration and continuous improvement.