Senior Software Engineer

FourCents; Canada; Remote; CAD 110,000 - 150,000; Full time

Job summary

FourCents is a software studio delivering end-to-end client products. We seek a senior engineer to own design and delivery of web and mobile apps, integrations, and AI features, collaborating directly with the founder and clients.

You will lead technical design, build full-stack features in TypeScript (React, Node.js, PostgreSQL), and explore AI-assisted capabilities with responsible guardrails. Expect direct client communication and a shared ownership culture.

Qualifications

• 6+ years building and shipping production web or mobile software.
• Strong TypeScript/JavaScript with React and Node.js experience.
• Experience deploying and operating services (Linux, Docker, NGINX or equivalent, a major cloud).
• Track record of working directly with clients or stakeholders on fixed-scope commitments.
• Clear written and spoken English; able to write technical commentary.

Responsibilities

• 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 React Native or native mobile where needed.
• Integrate third-party systems: payment gateways, ERPs, CRMs, booking and messaging platforms.
• Design and implement AI-assisted features with guardrails.
• Set up and maintain CI/CD, infrastructure and monitoring on Linux, Docker and cloud providers; maintain production health.
• Review code, mentor contributors, improve testing, docs, and handover.
• Join client calls and explain trade-offs clearly and scope work honestly.

Skills

Leadership on product decisions

TypeScript/JavaScript

React

Node.js

PostgreSQL

CI/CD & Cloud

Client communication

Tools

Docker

NGINX

Cloud platforms

Job description

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.