Senior Software Engineer

Hatched Recruitment Group; West Yorkshire; On-site; GBP 45,000 - 60,000; Full time

Job summary

A well-established technology company in West Yorkshire is seeking a Senior Software Engineer to support the evolution of critical systems. This hands-on role requires maintaining and improving platforms using C#/.NET and Python while balancing new feature development with system maintenance. Candidates should have experience with cloud technologies and be comfortable across existing codebases. Join a small, capable team to influence architectural decisions and contribute to exciting technical growth.

Benefits

Autonomy and responsibility

Influence on architectural decisions

Collaboration with senior technical leadership

Qualifications

• Strong experience building and maintaining production software.
• Commercial experience with C#/.NET.
• SQL and relational database knowledge.
• Comfortable across existing codebases and legacy systems.
• Independent, collaborative, and pragmatic.

Responsibilities

• Own key systems and features end-to-end.
• Maintain and evolve production systems.
• Build and maintain high-performance services using C#/.NET and Python.
• Develop practical device software with C, C++, and Python.
• Write unit and integration tests to ensure system reliability.

Skills

C#/.NET

SQL

Python

C/C++

JavaScript/TypeScript

Cloud technologies

Testing & Quality

Legacy systems

Embedded systems

Tools

Grafana

Docker

Google Cloud

Microsoft Azure

Linux

Job description

We are a well-established company with over 25 years in our industry, now entering a new phase of technical growth. We are looking for a Senior Software Engineer to strengthen our engineering capability and support the evolution of our core systems.

This is a hands-on role across the stack in a small, highly capable team, working closely with the Technical Lead to maintain, improve, and modernise a mature, production-critical platform.

The Role

Our systems are business-critical, designed for performance, reliability, and scalability. You’ll be balancing maintenance, new development, and modernisation, making a real impact on the platform every day.

You will:

• Own key systems and features end-to-end
• Work across multiple codebases and technologies
• Modernise existing platforms without breaking them
• Contribute to architectural decisions and technical direction
• Balance building new features with improving existing systems

What You’ll Do

Here’s where your skills will shine:

• Core Systems: Maintain and evolve production systems, modernise legacy components, and support the transition from monolithic to distributed architecture
• Backend & APIs: Build and maintain high-performance services using C#/.NET and Python
• Databases: Work with relational and NoSQL databases, optimising SQL queries for performance and reliability
• Embedded & Device Software: Develop practical device software with C, C++, Python, and shell scripting
• Testing & Quality: Write unit and integration tests to ensure system reliability
• Operations & Reliability: Support deployments, monitor system health, and contribute to smooth day-to-day operation using tools such as Grafana
• Applications & APIs: C#/.NET (4.7, 8, 9), Python, SQL Server, MongoDB, JS/TS, WinForms
• Embedded & Devices: C, C++, Python, C for microcontrollers, shell scripting
• Cloud & Infrastructure: Google Cloud, Microsoft Azure, Docker, Linux

You don’t need to be an expert in everything — this reflects a long-lived, evolving platform.

Skills & Experience

• Strong experience building and maintaining production software
• Commercial experience with C#/.NET
• SQL and relational database knowledge
• Comfortable across existing codebases and legacy systems
• Independent, collaborative, and pragmatic
• Python in production
• C/C++ commercial or systems experience
• JS/TS and modern web frameworks (Angular, React)
• IoT or hardware-integrated systems

Why Join Us

• Influence architecture and long-term technical direction of a proven product
• Work closely with senior technical leadership on real-world systems
• Enjoy autonomy, trust, and responsibility
• Play a key role in the next phase of technical evolution

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Senior Software Engineer • West Yorkshire, England, United Kingdom