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Senior Software Developer

Location: Derby (Hybrid – 1 day in the office per week)

Salary: Competitive, dependent on experience

Working Hours: 38 hours/week, 8:00am–6:00pm, 4 days per week

Our client, a vibrant and growing technology company, is seeking an experienced Senior Software Developer to join their development team. This is an exciting opportunity to work on diverse projects including large-scale data processing systems, enterprise applications, mobile apps and cutting-edge machine learning solutions all within a collaborative and supportive environment.

The Role

You will be responsible for designing, developing and maintaining complex software systems, working across backend and frontend technologies and supporting web and mobile applications. You will also mentor junior developers, contribute to solution architecture and collaborate with stakeholders to deliver high-quality software.

Key Responsibilities

Develop and maintain large-scale backend systems using C# .NET / .NET Core

Work on requirements analysis, system scoping and solution architecture

Build backend solutions to support web and mobile applications

Collaborate with team members to solve complex problems and produce high-quality user interfaces

Mentor junior developers and share technical knowledge across the team

Integrate systems with external platforms such as Salesforce, Xero or Microsoft Dynamics

Example Projects

Real-time IoT systems communicating via GPRS

Enterprise-level native mobile app projects

Complex reporting and scheduling systems

Rich data analysis, machine learning and AI projects

Backend integration with CRM and financial systems

Required Skills & Experience

C# .NET development (.NET Core) with large-scale system experience

LINQ / Entity Framework

Experience working with large data sets and complex processing systems

Strong experience with GIT source control and JIRA

Requirements analysis and system scoping experience

10+ years commercial software development experience (senior level)

Bachelor’s Degree in Computer Science or related field

Desirable Skills

Frontend frameworks such as Angular or React

Mobile app development (iOS/Android)

Cloud hosting experience (AWS or Azure)

API / Microservices architecture

NoSQL databases (MongoDB, MongoDB Atlas)

Kubernetes and Docker containerisation

Agile development methodology

Personal Attributes

Eager to learn and adopt new technologies

Strong team player with the ability to work independently

Excellent communication skills to explain technical concepts to colleagues and clients

Mentoring skills to support junior team members

Why Apply

This is an excellent opportunity to join a small highly skilled team in a friendly family-run environment working on a range of exciting projects with real-world impact. Our client offers opportunities for professional development, learning new technologies and a flexible hybrid working model.

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