Software Architect (C#, .Net, Cloud)

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

Benefits offered by this job

8-10% bonus

Pension

Medical insurance

Hybrid working

Job summary

Spectrum IT Recruitment is seeking a Senior Software Architect to shape the architectural direction of a modern cloud platform. This hands-on role focuses on secure, scalable design in a C#/.NET environment, mentoring engineers and guiding API-driven cloud development.

Hybrid working near Southampton, Fareham and Portsmouth is available; UK Security Clearance may be required. You will own architecture, review designs, and collaborate with product teams to delivery robust platform solutions with

Qualifications

• Extensive software Architect experience.
• Strong C#/.NET background required.
• Cloud-based multi-tenant app experience preferred.
• Security-focused design and API development is essential.
• Mentoring engineers and setting technical standards.

Responsibilities

• Own software architecture and translate complex requirements into practical technical solutions.
• Guide cloud application development with emphasis on security, performance and maintainability.
• Stay involved through design, delivery, testing and validation.
• Set technical standards and review designs while mentoring engineers.
• Collaborate with product teams to shape platform development.

Skills

Cloud architecture

C#/.NET experience

API design

Security best practices

Code reviews

Mentoring & leadership

Tools

C#

.NET

Azure/AWS/GCP

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.

• 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.