Principal .NET Engineer - Contract
Posted 1 day ago by djr
£650 Per day
Outside
Hybrid
Manchester, UK
Summary: The Principal .NET Engineer role is a contract position focused on designing and delivering scalable Back End services within a modern AWS-based platform. This principal-level engineering role combines hands-on engineering, architecture, and technical leadership to influence core system evolution. The position offers the opportunity to work on a greenfield cloud-native platform and contribute to key architectural decisions. The engagement is for a duration of 12 months, emphasizing high-performance service design and modern architecture patterns.
Key Responsibilities:
- Designing and building high-performance Back End services using C#/.NET
- Driving modern architecture patterns including microservices and event-driven systems
- Helping define technical strategy and Back End architecture
- Building and evolving cloud-native services within AWS
- Implementing Infrastructure as Code using Terraform
- Working with DynamoDB and distributed data models
- Collaborating with engineering leadership and product teams to scale the platform
Key Skills:
- Expertise in C#/.NET
- Experience with AWS
- Knowledge of Terraform for Infrastructure as Code
- Familiarity with DynamoDB and distributed data models
- Understanding of microservices and event-driven architecture
- Experience in designing high-performance Back End systems
- Strong technical leadership and collaboration skills
Salary (Rate): £650 per day
City: Manchester
Country: UK
Working Arrangements: hybrid
IR35 Status: outside IR35
Seniority Level: Senior
Industry: IT
Detailed Description From Employer:
Principal .NET Engineer - Contract
Up to £650/day Outside IR35
Manchester (Hybrid)
12 Months
We're partnering with a rapidly scaling technology platform that is heavily investing in its next-generation cloud architecture.
They are looking for a Principal .NET Engineer to play a key role in designing and delivering highly scalable Back End services within a modern AWS-based platform.
This is a principal-level engineering role, not just another development position. You will operate at the intersection of hands-on engineering, architecture, and technical leadership, helping shape how core systems evolve as the platform scales.
Why This Contract Is Interesting
Greenfield & Modern Architecture - Work on a cloud-native platform built around modern microservices and event-driven patterns.
Architectural Influence - Contribute to key technical decisions and shape Back End engineering standards across teams.
Principal-Level Engineering - Remain hands-on while guiding architectural direction and best practice.
Scale Challenges - Design services capable of handling high throughput and distributed workloads.
Long-Term Programme - 12-month engagement on a strategic platform initiative.
What You'll Be Doing
Designing and building high-performance Back End services using C#/.NET
Driving modern architecture patterns including microservices and event-driven systems
Helping define technical strategy and Back End architecture
Building and evolving cloud-native services within AWS
Implementing Infrastructure as Code using Terraform
Working with DynamoDB and distributed data models
Collaborating with engineering leadership and product teams to scale the platform
Technology Environment
C#/.NET
AWS
Terraform (Infrastructure as Code)
DynamoDB
Microservices & Event-Driven Architecture
Distributed Systems
If you've built and scaled high-performance Back End systems in AWS using .NET, this is a contract where you can have real architectural impact.