Senior Full-Stack Engineer for AI-Driven Platform (Hybrid)

Sitemark; Town of Belgium (WI); Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Hybrid working model

Job summary

Sitemark, the AI and robotics platform for renewable energy, seeks a Senior Full-Stack Engineer to own features end to end—from spec to production. You’ll think like a product person, talk to customers, and shape the system architecture.

You’ll work with JavaScript/TypeScript, React, Node.js, and cloud services, using AI tooling to boost productivity. This is a hybrid role with two days per week in Leuven and collaboration across teams to deliver high-impact solutions.

Qualifications

• Strong fluency in modern JavaScript/TypeScript, with React and Node.js.
• Solid understanding of, or a strong interest in, full stack development and cloud infrastructure (PostgreSQL, Azure, AWS, Docker…).
• You write clean, maintainable, reusable code with a focus on best practices, testing, and long-term scalability — and you can architect, review, and debug complex systems with strong judgment.
• A product-level thinker — you reason about users and outcomes, and you have opinions about what to build.
• You believe the future of engineering is building systems that write code, and you already build this way — with real, hands‑on experience using AI coding tools like Claude Code or Cursor.
• High agency, with a drive to keep improving your craft and to share what you learn with the team.
• A collaborative mindset, able to work autonomously in a small, fast‑paced team. Comfortable working in English.

Responsibilities

• Lead features and projects end to end — from spec and prioritization through development, testing, and deployment.
• Shape what we build, not just how — bring ideas to product refinement, brainstorming, and prioritization as a genuine product thinker.
• Work directly with customers — understand their problems firsthand and turn them into technical solutions.
• Own architecture and the hardest problems. You make the calls on how systems fit together and what 'good' looks like, take on the toughest technical challenges, and you can read, debug, and harden anything that gets built.
• Build with AI as your default: direct it, review it, and ship far more than you could by hand — without ever shipping something you don't understand or can't stand behind.
• Share what you know, and help the team get better every day.

Skills

JavaScript/TypeScript

React

Node.js

Tools

React

Node.js

PostgreSQL

Azure

AWS

Docker

Python

Job description

Sitemark, the AI and robotics platform for renewable energy, seeks a Senior Full-Stack Engineer to own features end to end—from spec to production. You’ll think like a product person, talk to customers, and shape the system architecture.

You’ll work with JavaScript/TypeScript, React, Node.js, and cloud services, using AI tooling to boost productivity. This is a hybrid role with two days per week in Leuven and collaboration across teams to deliver high-impact solutions.