Senior Software Engineer

Senior Software Engineer (C# / .NET)

📍 Bristol (Hybrid – 2–4 days in office)

💰 £65,000 – £75,000

ISL Talent have been retained by Insphere to help deliver this key software engineering hire.

The opportunity

Insphere are building a specialist software platform used in advanced manufacturing, robotics, and precision measurement.

Over the past 12–18 months, they’ve:

• Rebuilt their core product from the ground up
• Shifted toward a software-first platform model
• Secured major R&D projects with partners including Toyota and Airbus

They’re now at a point where:

👉 The product is strong

👉 The opportunity is clear

👉 And the focus is on scaling and commercialising the platform

This hire is part of that next phase, with plans to continue building out the team.

Why this role is interesting

This isn’t a standard “Senior C# Developer” role.

You’ll be:

• Working on a real-world engineering product (not just SaaS)

Building systems that interact with:

• Robots
• Measurement instruments
• Industrial environments

Developing:

• New features
• Integrations with external systems
• Core platform capabilities

You’ll also:

• Contribute to architecture and technical direction
• Work across the full lifecycle – from concept through to production
• Have genuine ownership and influence in a small, experienced team

The context

Insphere is an investor-backed business that is still scaling commercially.

• The product has been rebuilt and is gaining traction
• The company is entering a growth phase

To support this, they are investing further in engineering capability, with this hire forming a key part of that.

This will suit someone who:

• Enjoys building in an evolving environment
• Is comfortable with ambiguity
• Wants to have an impact on both product and direction

What they’re looking for

• Strong experience with C# / .NET
• Experience building complex systems (not just standard web apps)

Comfortable working across:

• Backend systems
• Architecture decisions
• Integration challenges

You’ll likely have:

• Worked in smaller or scaling businesses
• Been hands-on across multiple parts of a system
• A curiosity for how systems work beyond just the surface

Nice to have (not essential):

• Experience with:
• Real-time or low-latency systems
• Networking / communication protocols
• Integrating with external hardware or SDKs

Tech environment

• .NET / C#
• Blazor (web UI)
• Real-time data processing
• Integration with external systems and SDKs

Working setup

• Bristol-based (Science Park)
• Hybrid – typically 2–4 days in the office
• Salary: £65,000 – £75,000

Interested?

ISL Talent have been retained by Insphere to deliver this hire.

If you’re interested and would like more details, please apply or contact ISL Talent to learn more about the role.