[Hiring] AI Product Engineer, Manufacturing, Logistics Systems Full Stack, Next.js+Supabase @Koin Limited

Role Description

The AI Product Engineer is a mid to senior level individual contributor responsible for designing, building, and shipping the internal tools, applications, dashboards, and automations that power Koin’s operations. Everything you build ships to real users across the business and directly supports revenue, margin, and operational efficiency.

This is a product engineering role with a difference: we build AI-natively. Claude Code is the primary development environment, and the expectation is that you orchestrate AI to produce production-grade software rather than hand-coding it line by line. You must, however, genuinely understand what is being built. Reading the code, questioning the architecture, and catching what the AI gets wrong is central to the job.

You will take features from an approved Statement of Work through Technical Design Document, build, testing, and deployment on our internal product stack:

• Next.js applications hosted on Vercel
• Supabase as the data layer (Postgres, Row Level Security, edge functions)
• n8n for workflow orchestration
• GitHub for source control

The wider business runs on NetSuite, Shopify, and Patchworks, and the tools you build will frequently integrate with them.

Beyond product delivery, the role carries responsibility for process automation and for upskilling the wider team:

• Building Claude-powered automations across departments
• Creating reusable templates and skills
• Coaching colleagues so that AI-augmented work is the default across the business, not the exception

We are looking for someone who gets genuinely excited by new technology, systems, and logic. Someone with a natural problem-solving mindset who sees an inefficient process and immediately starts thinking about how to fix it. Curiosity and initiative matter as much as technical skill.

This role reports to the Head of Systems & Data and works cross-functionally with all departments. Full training will be provided on Koin’s internal systems and tech stack.

Qualifications

• Proven track record of shipping production web applications using AI-accelerated development, with real examples you can walk us through
• Deep hands-on experience with Claude Code as a primary development environment, alongside strong knowledge of Claude across Chat and Cowork
• Strong Supabase experience: Postgres data modelling, Row Level Security policies, and edge functions are essential
• Experience deploying and running applications on Vercel with Next.js
• Disciplined GitHub workflow: branching strategies, pull requests, and managing preview/production environments through Vercel
• Experience building and operating n8n workflows, including error handling and integrations via APIs and webhooks
• The ability to read and reason about the code AI produces (TypeScript, SQL)
• Able to produce Technical Design Documents (with AI) covering architecture, data model, and security to a standard fit for approval
• Experience designing and building agent-based workflows, including sub-agents and orchestration agents
• Experience working within Agile frameworks: sprint planning, daily standups, and delivering in sprint increments
• Strong prompt engineering skills with the ability to design, test, and iterate on complex prompts for diverse use cases
• Comfortable working with APIs (REST, webhooks, OAuth) and JSON
• Excellent analytical and problem-solving skills with the ability to break down complex processes into buildable, automatable steps
• Strong written and spoken English with the ability to create clear documentation and training materials
• Ability to clearly communicate technical concepts to non-technical stakeholders
• Self-directed and structured working style, able to manage workload independently in a remote environment aligned with UK business hours
• Naturally curious with a bias toward continuous improvement and staying ahead of the rapidly evolving AI landscape

Requirements

• A formal software development background: professional experience writing code by hand before adopting AI-accelerated workflows (desirable but not essential)
• Any NetSuite experience: administration, saved searches, SuiteQL, or REST/OAuth integrations (desirable but not essential)
• Experience with iPaaS or middleware platforms for system integration, particularly Patchworks (desirable but not essential)
• Familiarity with MCP (Model Context Protocol) or similar AI integration standards (desirable but not essential)
• Familiarity with other AI platforms and models (e.g. OpenAI, Gemini) and the ability to compare capabilities objectively (desirable but not essential)
• Experience working with e-commerce platforms, particularly Shopify (desirable but not essential)
• Understanding of e-commerce operations including order management, inventory, and customer lifecycle (desirable but not essential)
• Experience working in or with D2C or multi-brand retail businesses (desirable but not essential)

Benefits

• Salary of $4,000 (USD) per month
• Fully remote role for LATAM-based candidates aligned with UK business hours
• Full training on Koin’s internal systems, tools, and operational processes
• Huge opportunity for career development as Koin incorporates AI into every element of the business — this role will grow as our AI capability grows
• Opportunity to define and own a new capability within a fast-growing international e-commerce business
• Direct exposure to leadership and the opportunity to shape the business’s AI strategy from the ground up
• Work across multiple brands, markets, and business functions
• Supportive and collaborative working environment with a strong focus on innovation
• Opportunity to work at the cutting edge of AI application in a commercial setting
• Access to Claude Pro and all necessary AI tooling to perform the role effectively