Lead Software Engineer

Northern Ireland Water Limited; Belfast; On-site; GBP 80,000 - 95,000; Full time

Job summary

A leading technology firm in Belfast is seeking an experienced Lead Software Engineer to own backend systems and manage a team of engineers. The ideal candidate will have deep experience with Python or Node.js, strong architectural skills, and a drive for scalable solutions. This role offers a competitive salary of up to £95,000 and an attractive benefits package including excellent leave entitlement and share options.

Benefits

Excellent annual leave entitlement

Share options

Qualifications

• Deep commercial experience in backend development with Python or Node.js.
• Strong background in scalable, server-side architecture.
• Experience delivering services at scale.

Responsibilities

• Lead and mentor backend engineers.
• Define architecture, coding standards, and best practices.
• Work with product and engineering teams to shape technical solutions.
• Build and maintain backend services and APIs.

Skills

Backend development (Python or Node.js)

Scalable, server-side architecture

Agile team collaboration

Technical leadership

Job description

MCS Group is proud to be partnering again with one of the UK and Ireland's most exciting technology companies in their search for a Lead Software Engineer. The company's product suite sits at the cutting-edge of AI and this firm is truly in growth mode after a fantastic 2025. This is a truly unique opportunity for an experienced software engineer (you could be operating at a senior level currently or principal/staff level) who is seeking to join a tech company that is truly scaling (competing and winning against the big names in AI in industry today) and to future proof their career. Working on one of their core products, as a Lead Backend Engineer you will own the design, quality, and delivery of backend systems and services. You'll lead a team of engineers, set technical direction, and work closely with stakeholders to turn product needs into scalable, reliable software.

What You’ll Do

• Lead and mentor backend engineers.
• Define architecture, coding standards, and best practices.
• Work with product and engineering teams to shape technical solutions.
• Build and maintain backend services and APIs using either Python or Node.js.
• Ensure systems are scalable, secure, and reliable.

What We’re Looking For

• You’ll have deep commercial experience in backend development (Python or Node.js).
• You’ll have a strong background in scalable, server‑side architecture.
• Experience delivering services at scale.
• Comfortable working in agile teams.
• Strong communication and technical leadership skills.

Salary

• Up to £95,000 with a leading benefits package which includes amazing annual leave entitlement (one of the best in the private sector) and share options.

To speak in absolute confidence about this opportunity, please send an up‑to‑date CV via the link provided or contact Chris Busby, Associate Director - IT Recruitment, at MCS Group

Even if this position is not right for you, we may have others that are. Please visit MCS Group to view a wide selection of our current and exclusive roles www.mcsgroup.jobs

All conversations will be treated in the strictest of confidence.