Intermediate UI Developer (React) to build and maintain a internal data platform that supports workflows, approvals, monitoring, and decision-making for ou
S.i. Systems
Calgary, AB-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on February 15th, 2026
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Starting date : 1 position to fill as soon as possible
Description
Our oil and gas client is seeking an Intermediate UI Developer (React) to build and maintain a internal data platform that supports workflows, approvals, monitoring, and decision-making
Candidate will be in-office 5 days/week in downtown Calgary
Must Haves:
- 5+ years of UI development experience in React with a focus on UX/UI
- Experience managing server state (React Query, Redux Toolkit, Zustand, etc.)
- Solid understanding of async UI behavior (loading, retries, partial failure)
- Experience using TypeScript in real production codebases
- Experience in the Oil and Gas Industry
Nice to Haves:
- Experience with industrial, energy, or operations software
- Exposure to event-driven systems
- Excellent written and verbal communication skills
Responsibilities:
- React UI for dashboards, tables, and workflows
- Turn complex domain concepts into clear, usable UI
- Forms and review flows (approve / reject / override)
- Data-dense views where accuracy and clarity matter
- APIs that are event-driven and change over time
- Work closely with backend engineers on API shape and UI behavior
- Geospatial mapping, plots and advanced visualizations
AI may be used in evaluating candidates.
This posting is for an existing vacancy.
Requirements
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