About this role
In order to work in Ireland a non-EEA National, unless they are exempted, must hold a valid employment permit. Please review the Eligibility and requirements for an employment permit if you are unsure of your eligibility to apply for this vacancy. Nayvail (operated by Grimlingo Limited, Cork) is building a software-driven bookkeeping service for purely digital Irish and UK businesses — SaaS, online services and digital agencies with no cash and no inventory. We automate the whole accounting workflow, from invoicing and bank feeds through to VAT, payroll and tax filing. We're looking for a full-stack developer to join our small team part-time and help build it. We build with modern AI coding tools (like Claude Code) as a core part of how we work. That means we care far more about how you think, learn and build than about how many years you've done it. If you have solid fundamentals and can move fast with AI tools — then read, test and trust what you ship — you can do this job whether you're a student, a recent grad, self-taught, or already experienced. Our stack is Python background workers (Redis/RQ), a web frontend, and integrations with open banking, Stripe and government tax APIs (Revenue / HMRC). You'll touch most of it. Please note: applicants must be legally entitled to work within Ireland and the EU. What you will do Work across our four codebases: customer portal, ledger engine , integrations service, and website Build and maintain integrations with banking, payments and tax-filing APIs Use AI coding tools to ship features fast, then verify, test and harden them Turn accounting rules (worked out with our finance specialist) into reliable automated logic Help keep the system secure, tested and maintainable What we are looking for Solid programming fundamentals in at least one language (Python a plus) Comfortable working — or genuinely eager to learn — across both front end and back end Able to use AI coding tools to move fast, and to read, debug and verify code (including AI-generated code) Curious, self-directed and clear in communication Students, recent grads, self-taught and career-changers all welcome — we hire on how you build, not years or degrees Nice to have Any Python experience Experience with REST APIs, webhooks or background job queues Exposure to fintech, payments, accounting or open banking Frontend framework experience (React/Vue) This is a part-time, flexible role (hours rise and fall with our development cycle). It is fully remote, but you must be based in Ireland and legally resident here. Fluent English (written and spoken) is required. Please note: a complete CV is required to be considered for this role. Applications submitted without a CV cannot be progressed.