Full Stack Engineer

Full Stack Engineer – Integrations Manchester City Centre | Hybrid – 2 days per week £40,000–£45,000 depending on experience Most engineering roles at this level involve joining an established team and working within structures that are already in place. This opportunity is different. We’re working with a funded Manchester startup using behavioural science and AI-driven matching to help young people discover and access career opportunities. The product is live, customers are already using it, and the business is now entering its next stage of growth. They’re looking for a Full Stack Engineer who can initially take ownership of a key technical area: the integrations connecting the platform with the wider HR and recruitment technology ecosystem. You'll work across integrations with Applicant Tracking Systems, HR platforms and partner APIs, making sure data moves reliably and securely between systems as the platform scales. The opportunity to grow This isn't intended to remain a purely delivery-focused engineering position. You'll initially work closely with an experienced fractional CTO and senior engineering partners, giving you access to strong technical mentorship while allowing you to take genuine ownership of production systems. As the business grows, the intention is to develop more engineering capability internally. For the right person, that creates the opportunity to take on broader technical ownership, influence engineering decisions and potentially help build and lead an internal engineering team. It could suit a strong mid-level engineer who isn't necessarily a Lead today, but wants their next move to put them on that path. What you'll be doing Build and own integrations with third-party platformsDesign and work with REST APIs, webhooks and authentication flows such as OAuthTroubleshoot problems across multiple systems when integrations or data flows don't behave as expectedContribute across the stack using Node.js / TypeScript and ReactWork with PostgreSQL and AWS within a live production environmentHelp shape integration architecture and engineering standards as the platform scalesWork directly with senior technical leadership on engineering decisions and prioritiesGradually take greater ownership as the internal engineering capability develops Tech stack Node.js / TypeScript | React | PostgreSQL | AWS What we're looking for Around 3–5 years of commercial software engineering experienceStrong JavaScript / TypeScript experienceGood experience building or integrating REST APIsExperience working across backend and frontend developmentComfortable investigating problems that span multiple systems and servicesSomeone who can work with autonomy rather than needing every task defined for themAn interest in taking greater technical ownership as their career develops Particularly useful experience Experience within recruitment technology, HR systems, payroll platforms, SaaS products or other integration-heavy environments would be valuable, especially where you've worked with external APIs, OAuth, webhooks or third-party platforms. Why join? You'll join early enough to have genuine influence over how the platform develops, while still having experienced technical leadership around you. Rather than joining a large engineering structure with several layers above you, you'll have the opportunity to become increasingly important to the technical direction of the business as it grows. For someone currently operating at mid-level who wants their next move to develop them towards Senior or Lead Engineer responsibility, this offers a genuine route to do that.