Frontend​/UI Developer

Position: Frontend / UI Developer
Job Summary
Full-time : 37.5 Hours per week, Monday to Friday

Location :
Ottawa Office (Up to 3 days per week), 70 Laurier Ave West, Suite 310, Ottawa, ON K1P 5V5 and Ottawa-based Home Office, or, remote if located outside of the National Capital Region.

Reporting To :
Director of Technology

Salary Range : $80,

Type of Vacancy :
New

We are looking for a UI/Frontend Developer to join the Larus team. You will design and build the interfaces through which military planners, analysts, and decision-makers make sense of complex, high-stakes information, interactive maps with NATO symbology, AI-powered workflows, rich text and code editors, and collaborative scenario planning tools. This is not a dashboard role: you will build decision-support tools where clarity and responsiveness directly impact outcomes.

You will own features end-to-end, from gathering requirements with domain experts, through architecture and implementation, to shipping tested code. We expect you to have opinions about how frontend applications should be structured, and the experience to back them up. You will influence technical direction, mentor junior developers, and contribute to a codebase built on Feature-Sliced Design, headless UI primitives, and a custom design system.

Key Responsibilities

Gather requirements from subject matter experts (including defence and military specialists), design user flows, and deliver working software;

Architect and build complex, interactive React/Type Script applications, geospatial interfaces, editors, data-dense views, and AI-integrated workflows;

Design and maintain frontend state effectively, choosing the right patterns for client, server, and UI state;

Build and extend a custom design system with headless primitives, scoped styling, and design tokens;

Plan and conduct user studies (usability testing, A/B experiments, surveys) and use findings to iterate on designs;

Write tests at every level, unit, integration, and end-to-end; and participate in code reviews;

Present designs and demos to stakeholders; and

Collaborate across disciplines, backend engineers, data scientists, and product managers, within an agile process.

Qualifications
Some individuals are less likely to apply for a job unless they consider they are a perfect match. At Larus Technologies, we welcome motivated individuals to our diverse and inclusive workplace. Thus, if you are excited about this role but do not have every qualification, we encourage you to apply anyway.

Expected qualifications include:

University degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience;

Required to meet qualifications to obtain a Canadian Government security clearance (typically requires Canadian citizenship or permanent residency);

At least 2 years of professional frontend development experience;

Strong proficiency with React and Type Script;

Experience with modern state management (Zustand, Redux Toolkit, or similar) and server state patterns (Tan Stack Query, SWR, or equivalent);

Experience with REST API integration and generated API clients;

Experience writing unit, integration, and end-to-end tests (Vitest or Jest, Testing Library, Playwright or Cypress);

Working knowledge of Git workflows and CI/CD pipelines;

Strong communicator comfortable gathering requirements from domain experts and presenting to both technical and non-technical audiences; and

Genuine interest in the product, understanding what we’re building and why.

Technical Skill Requirements, working knowledge of:

GIS/geospatial interfaces:
Map Libre GL, Mapbox, Leaflet, or Open Layers;
GeoJSON and spatial analysis;

Rich text editors:
Tip Tap, Prose Mirror, Slate; or code editors:
Code Mirror;

AI/ML-powered UX:
Integrating LLM services, building chat interfaces, or designing human-in-the-loop features;

User research:
Planning usability studies, A/B tests, or surveys and translating findings into design improvements;

Docker, Azure Dev Ops, or similar deployment and CI/CD platforms;

Familiarity with Python for cross-team collaboration.

Desired Higher‑Level Skills

Frontend architecture  – modular methodologies (Feature‑Sliced Design or similar), clear module…