Senior Software Engineer

MCS Group is delighted to be partnering with a growing consultancy as they establish a brand-new engineering presence in Belfast. Our client is a high-growth cloud, data, and AI engineering consultancy delivering mission-critical solutions for enterprise and scaling clients across modern cloud ecosystems.

This is a unique opportunity to join at an early stage and play a key role in shaping both technical delivery and the future growth of the Belfast team.

The Role

As a Senior Software Engineer, you'll work closely with clients to design, build, and deliver scalable, production-grade applications and platforms across cloud, web, API, and data-driven environments.

You'll join a highly collaborative engineering team embedded directly with enterprise clients, working on complex systems that require strong technical ownership, autonomy, and adaptability.

While the initial project will involve TypeScript-focused development, the company is open to engineers from strong Java or Python backgrounds who are comfortable learning new technologies and working across a modern engineering stack.

This role would particularly suit someone who enjoys solving complex engineering challenges, working independently, and wants the opportunity to grow into a future technical leadership or people management role as the Belfast team expands.

What you'll be doing

Design and build scalable, enterprise-grade software solutions across frontend, backend, and cloud platforms

Develop modern APIs, backend services, and distributed systems

Work closely with client stakeholders in a delivery-focused consulting environment

Build and deploy cloud-native applications on Google Cloud Platform

Contribute to architecture decisions, engineering standards, and technical best practices

Collaborate on data-driven and AI-enabled solutions

Work across modern engineering tooling including CI/CD, infrastructure automation, and containerised environments

Take ownership of technical delivery and help shape the future engineering culture of the Belfast team

What you'll bring

Strong commercial software engineering experience in large-scale production or enterprise environments

High proficiency in at least one core backend language such as Java or Python

Experience building scalable backend systems, APIs, and modern applications

Exposure to TypeScript/Node.js or a strong willingness to work with and learn modern TypeScript technologies

Experience working with cloud platforms such as Google Cloud Platform, AWS, or Azure

Strong understanding of software architecture, engineering best practices, and scalable system design

Comfortable working autonomously and taking ownership in a fast-moving environment

Strong communication skills and experience working directly with stakeholders or clients

Experience mentoring others or an interest in progressing into team leadership would be highly desirable

Nice to have

Experience with React or modern frontend frameworks

Exposure to GraphQL APIs

Experience with Terraform, Docker, or infrastructure-as-code tooling

Familiarity with data engineering, analytics, or AI/ML-driven systems

What's in it for you

Join at an early stage of a fast-growing engineering consultancy

Opportunity to become a foundational hire within the Belfast team

Work on large-scale, enterprise-grade cloud and AI projects

Gain exposure to cutting-edge technologies across cloud, data, and AI engineering

Clear progression opportunities into technical leadership or management

Hybrid working model

Competitive salary and comprehensive benefits package

Collaborative, engineering-led culture with genuine ownership and impact

To speak in absolute confidence about this opportunity, please send an up to date CV via the link provided or contact Matthew Rainey at

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

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.

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