Software Architect (C#, .Net, Cloud)

Spectrum IT Recruitment; Southampton; Hybrid; GBP 90,000 - 110,000; Full time

Benefits offered by this job

Hybrid working

Pension

Medical insurance

Job summary

Spectrum IT Recruitment seeks a Senior Software Architect for an established technology business developing a cloud software platform. This hands-on role influences architectural direction and mentors engineering teams to deliver secure, scalable software.

The core stack is C# and .NET, with strong transferable experience in cloud architectures. This hybrid role includes two office days weekly near Southampton, Fareham, Portsmouth; UK Security Clearance eligibility is required.

Qualifications

• Strong software engineering background with experience as a Software Architect in a C#/.NET environment.
• Experience designing complex cloud applications, ideally multi-tenant.
• Building APIs and working with databases and distributed systems.
• Applying sound software design principles and security best practice.
• Communicating architectural decisions and guiding engineering and product teams.

Responsibilities

• Own software architecture and design, translating complex requirements into practical technical solutions.
• Guide the development of cloud applications with focus on security, performance, scalability and maintainability.
• Stay involved through delivery from design to testing and validation.
• Set technical standards, review designs and mentor engineers.
• Collaborate with product teams to shape requirements and platform development.

Skills

C#/.NET

Cloud architecture

API design

Security best practices

Job description

We're recruiting a Senior Software Architect for an established technology business developing and modernising a complex cloud software platform. This is a hands-on opportunity to contribute to architectural direction, influence technical decisions and work closely with engineering teams to deliver secure, scalable and resilient software.

The core technology stack is C# and .NET, although architects with strong transferable experience will also be considered.

The role

• Own software architecture and design, translating complex requirements into practical technical solutions.
• Guide the development of cloud applications, considering security, performance, scalability and maintainability.
• Stay involved throughout delivery, from design and implementation through testing and validation.
• Set technical standards, review designs and support engineers through mentoring and collaboration.
• Work with product teams to shape requirements and guide platform development.

About you

You’ll bring a strong software engineering background and experience as a Software Architect, ideally within a C#/.NET environment.

Your experience should include:

• Designing complex cloud applications, ideally within multi-tenant environments.
• Building APIs and working with databases and distributed systems.
• Applying sound software design principles and security best practice.
• Supporting quality through testing, code reviews and clear technical standards.
• Communicating architectural decisions and working collaboratively with engineering and product teams.

You’ll also have an interest in improving development practices, including practical experience using AI tools to support your work.

This is an individual contributor role with technical ownership and influence. Appointments can be made at Senior or Lead Architect level depending on experience.

The package

• £90,000-£110,000 depending on experience, plus an 8-10% bonus, pension and medical insurance.
• Hybrid working includes two office days each week near Southampton, Fareham, Portsmouth.
• Applicants must be eligible for UK Security Clearance. There is a straightforward two-stage interview process.