What we do

Old St Labs is a London-based digital product studio that transforms ideas into production-ready software for startups and growing businesses. We specialize in web platforms, mobile apps, and AI-powered solutions—from rapid 3-day prototypes to full-scale applications across healthcare, fintech, education, and community sectors. Founded by experienced startup builders in 2020, we act as technical partners who guide clients from initial concept through to launch and beyond.

Why work for us

Join a studio that survived the 2020 downturn by solving real problems for innovators who needed more than just code. We work with ambitious founders and established businesses on meaningful projects—recent work includes AI-powered math tutoring apps, menstrual health platforms, and music industry marketplaces. Our Clutch reviews consistently highlight our reliable delivery, thoughtful design, and clear communication, reflecting our reputation-driven approach to building products that last.

Our culture

We're a transparent, design-led company where diverse backgrounds meet startup energy—from young tech natives to experienced veterans who previously built their own companies. The team thrives on high responsibility and bringing their own ideas to problem-solving. Remote-friendly with roots in London (WeWork Southbank) & Cape Town (Workshop 17 Waterfront), we balance autonomy with collaboration, fostering an environment where everyone knows what's expected and delivers quality work.

Our engineering process

We invest heavily in quality through test-driven and behaviour-driven development, dedicating roughly one-third of development time to testing. Our workflow includes working across multiple tech stacks (Java, Python, Node.js, React/Next.js), using agile methodologies with ClickUp for project management, and maintaining rigorous QA processes from feature approval through release. We prototype quickly using tools like Marvel to validate ideas before deep development, emphasizing both visual design excellence and detailed UX research.

Our hiring process

We're currently expanding our AI Automation division and actively hiring engineers who are digital natives with strong problem-solving abilities. Positions range from junior developers (looking for up to 1 year experience with frameworks in Java/Python/Node.js) to senior leadership roles. We value self-management, excellent communication skills, and candidates who want to take ownership of projects while learning new technologies as different client needs arise.