Software Engineer

develop; Greater London; On-site; GBP 55,000 - 60,000; Full time

Benefits offered by this job

Performance-related bonus

Early finish Fridays (1:30pm)

22 days holiday + bank holidays

Additional holiday entitlement with service

Job summary

develop in Greater London is seeking a Senior Full Stack .NET Engineer for a hybrid role offering a salary of £55k–£60k. This position involves taking ownership of a Smart Tanks platform used for rainwater harvesting monitoring and flood prevention systems.

The role requires expertise in C#, .NET, and SQL Server, with significant responsibilities for maintaining and modernizing the existing platform while working closely with operations teams and customers.

Benefits include a performance-related bonus, early finish Fridays, and 22 days holiday plus bank holidays.

Qualifications

• Experience with C# and .NET.
• Proven record in maintaining and improving existing platforms.
• Comfortable working independently and making technical decisions.

Responsibilities

• Become the technical owner of an existing Smart Tanks platform.
• Maintain and improve the existing platform.
• Modernize parts of the stack and update legacy components.
• Configure and troubleshoot IoT-enabled hardware/controllers.
• Work directly with operations teams, customers, and leadership.

Skills

C#

.NET

Microsoft SQL Server

Windows Server / Windows Services

C / C++

IoT / industrial systems experience

Job description

Senior Full Stack .NET Engineer | West London Hybrid | £55k–£60k

I’m currently partnered with an established engineering and environmental technology business delivering large-scale smart water management systems across the UK and Europe.

Their technology is already used across major commercial sites including airports, retail destinations, and landmark developments - and they’re now looking for a Senior Software Engineer to take sole ownership of a growing IoT monitoring platform that is becoming a key revenue-generating product for the business.

This is a genuinely unique opportunity for someone who enjoys autonomy, ownership, and solving real-world engineering problems.

The role:

You’ll become the technical owner of an existing Smart Tanks platform used to monitor and control rainwater harvesting and flood prevention systems.

The platform is already live across multiple commercial installations, with significant plans to scale internationally over the next few years.

Initially, the focus will be:

• Maintaining and improving the existing platform
• Modernising parts of the stack and updating legacy components
• Configuring and troubleshooting IoT-enabled hardware/controllers
• Working directly with operations teams, customers, and leadership
• Helping shape the future direction of the product

This is a hands-on role where you’ll operate as the lead engineer in the space, so they need someone comfortable working independently and making technical decisions.

• C#
• .NET
• Microsoft SQL Server
• Windows Server / Windows Services
• C / C++
• IoT / industrial systems experience highly beneficial

Package:

• Performance-related bonus
• Early finish Fridays (1:30pm)
• 22 days holiday + bank holidays
• Additional holiday entitlement with service

The business is looking to move relatively quickly but is also realistic about finding the right person for what is a very niche and business-critical hire.

If you enjoy working on software connected to physical systems, infrastructure, IoT, or industrial environments - this is well worth a conversation.