About Us

Zac Gosling

CEO

Atoss Development is a Northern Ireland-based software development company established in 2019. We specialise in Java development, but our expertise also extends to maintaining and building applications in Python, PHP, and Perl. Our team of 20 experienced developers brings a wealth of knowledge to every project, whether it involves supporting legacy systems, modernising outdated infrastructure, or building scalable new software from the ground up. With a practical, no-nonsense approach to development, we focus on delivering solutions that are reliable, maintainable, and built to last.

We primarily serve clients across the UK and Ireland, working with a wide range of organisations — from agile startups to established enterprises. Our strength lies in our ability to work with existing systems without disrupting what already works. We understand that many businesses rely on long-standing infrastructure, and we respect that. Rather than pushing for unnecessary change, we aim to enhance what’s already there, bringing stability and value through thoughtful development practices and deep technical insight.

What makes Atoss Development different is the way we work with our clients. We don’t operate behind closed doors or surprise you with unexpected costs. From the very beginning, we prioritise open, honest communication. We take the time to understand your goals and collaborate closely throughout the process to ensure the final result matches your expectations. Our pricing is clear and upfront — no hidden fees, no vague estimates — just a straightforward commitment to getting the job done right.

If you’re looking for a development team that values experience, transparency, and long-term reliability, Atoss Development is ready to help. Fill out our contact form and let’s start building something solid, together.