Senior Software Engineer

Own the design and delivery of client products end to end: web apps, mobile apps, integrations and AI features, working directly with the founder and the clients themselves.FourCents is a software studio with more than twenty years of product work and 350+ projects delivered for clients across healthcare, real estate, finance, logistics, e-commerce and education. We are small on purpose: clients work directly with the people writing their code, and we stay with them for years. We are hiring a senior engineer who wants that kind of ownership, not a ticket queue.What you will do
Lead the technical design and delivery of client products from discovery to launch and beyond.Build and ship full-stack features in TypeScript (React, Node.Js, PostgreSQL) and in React Native or native mobile where a project calls for it.Integrate third-party systems: payment gateways, ERPs (for example Epicor P21), CRMs, booking and messaging platforms.Design and implement AI-assisted features responsibly: retrieval, automation and agent workflows with clear guardrails.Set up and maintain CI/CD, infrastructure and monitoring on Linux, Docker and cloud providers;
keep production healthy.Review code, mentor contributors, and raise the bar on testing, documentation and handover.Join client calls, explain trade-offs in plain language, and help scope work honestly.What we are looking for
Six or more years building and shipping production web or mobile software, with at least two as the technical lead on a product.Deep TypeScript/JavaScript with React and Node.Js;
comfortable with SQL schema design and performance on PostgreSQL.Experience deploying and operating services (Linux, Docker, nginx or equivalent, a major cloud) and debugging them under pressure.A track record of working directly with clients or stakeholders and delivering on fixed-scope commitments.Clear written and spoken English;
you can write the technical section of a proposal and the release notes.
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