Senior Software Engineer (Belfast-Hybrid)

MCS Group; Belfast City District; Hybrid; GBP 48,000 - 80,000; Full time

Benefits offered by this job

Stock options

Hybrid work

Leave and holidays

Private healthcare

Company pension

Flexible working

Offsite event

Cycle to Work

Career development

Job summary

MCS Group is partnering with a growing Belfast product company to recruit a Senior Software Engineer. You will own features across backend services and frontend interfaces, build APIs and cloud-based services, and contribute to system design.

The role embraces AI and learning across languages and tools, with strong emphasis on ownership and collaboration. The team values maintainable code, testing, and customer-focused delivery.

Qualifications

• Proven commercial software engineering experience.
• Backend development with full-stack capability.
• Interest in applying AI practically to products.
• Ability to learn new languages and tools quickly.
• Independent, responsible, delivery-focused.

Responsibilities

• Own features across backend services and frontend interfaces from idea to release.
• Build APIs and cloud-based services supporting web/mobile experiences.
• Contribute to system design and architectural decisions.
• Improve reliability, performance and security through testing and debugging.
• Explore AI tools to enhance development and product capabilities.
• Collaborate with colleagues and respond to customer feedback.

Skills

Backend development

Full stack

AI-oriented

Independent delivery

Collaborative work

Tools

PHP/Symfony

Angular/TypeScript

AWS

Node.js

Python

Rust

Docker

Kubernetes

Job description

Senior Software Engineer | Belfast | Up to £80,000
Hybrid - two days per week in the Belfast office

Interested in what you can build, wherever the technology takes you?

MCS Group is working exclusively with a growing product company to recruit a Senior Software Engineer for its Belfast team.

Having secured significant investment, this business develops a SaaS platform used by some of the world's most recognisable companies. We've helped build its Belfast team over the past 18 months, and they're growing again.

This opportunity would suit a curious engineer who enjoys solving problems, exploring new technologies and taking ownership. You'll join a team that embraces AI and values the ability to learn across languages and tools.

The opportunity

You will:

• Own features across backend services and frontend interfaces, from initial ideas through to release.

• Build APIs and cloud-based services that support web and mobile experiences.

• Contribute to system design, architecture and decisions about how the product evolves.

• Improve reliability, performance and security through testing, debugging and thoughtful engineering.

• Explore how AI tools can improve development and support new product capabilities.

• Share ideas and knowledge while responding to customer feedback and changing priorities.

Who they're looking for

You'll bring strong commercial software engineering experience, particularly in backend development, alongside the ability to contribute across the full stack.

Just as important is your approach to the work:

• You're enthusiastic about the future of AI and interested in applying it practically.

• You're comfortable learning different programming languages and choosing tools around the problem.

• You can work independently, make sound decisions and take responsibility for delivery.

• You enjoy an environment where ideas develop quickly and requirements aren't always fully defined.

• You care about maintainable code, testing and the experience of the people using your software.

• You communicate well and enjoy collaborating with colleagues across disciplines.

Personal projects, open-source contributions or experiments with new technologies would be a welcome bonus, but aren't essential.

The technology

The core platform uses PHP/Symfony, Angular/TypeScript and AWS, with a broader environment including Node.js, Python, Rust, relational and document databases, Docker and Kubernetes.

Previous PHP experience isn't essential. Engineers from other language backgrounds are welcome, provided they have strong fundamentals and are keen to learn. You won't need experience with every technology listed.

AI tools are already part of the development environment, including ChatGPT, Gemini, Cursor and internal tools powered by LLMs.

Is it right for you?

This is a fast-moving product environment with meaningful ownership and evolving priorities. It will suit someone who enjoys trying new approaches and getting involved beyond a tightly defined remit. If you prefer a fixed technology stack and highly prescribed tasks, it may be less suited to how you like to work.

What's on offer

• Salary up to £80,000, plus stock options.

• Hybrid working with two days per week in Belfast city centre.

• Five weeks' annual leave, plus public holidays.

• Private healthcare and company pension.

• Flexible working, company socials and an annual offsite.

• Cycle to Work scheme.

• The opportunity to influence a growing product and develop alongside an established Belfast team.

MCS Group is committed to Equality, Diversity, and Inclusion for all, being the first recruitment agency in NI to achieve Bronze Diversity Mark accreditation, if you have a disability which means you require a reasonable adjustment to be considered at any stage of the recruitment process, please contact us and we will endeavour to facilitate the request.