Senior Software Developer I

AB
On-site
Posted Oct 8, 2026
1 position

Opens an external site

Employment type: Full-time
Experience level: Senior · 5+ years
Minimum education: Bachelor’s degree
Posting language: English
Working hours: 40 hours per week

Job summary

The Senior Software Developer will lead system architecture design, oversee product delivery, and ensure the security and reliability of cloud-based services. They are also responsible for mentoring junior developers and maintaining high coding standards through thorough code reviews and documentation.

Job details

Key Accountabilities Job Title Important Tasks / Activities / Outcomes Technical Leadership & Architecture · Design and document the system architecture for assigned products, recording key decisions and trade-offs. · Plan and lead staged rebuilds of existing products so current clients see no disruption or data loss. · Select tools, frameworks and patterns that balance delivery speed, cost and long-term maintainability. · Work with the lead developer to shape the technical roadmap and identify technical debt worth paying down. · Translate business requirements into technical designs, estimates and clear stories with acceptance criteria. Product Delivery & Ownership · Own large features and projects from design through to production, delivered on schedule and to agreed quality. · Contribute to sprint planning, estimation and retrospectives, helping keep the team’s delivery predictable. · Work with stakeholders and non-technical colleagues in various context and complexities to clarify requirements and explain trade-offs. · Ensure every release is tested, reviewed and documented before it reaches clients. · Monitor delivered features after launch and act on feedback, bugs and performance issues. Security, Reliability & Observability · Apply secure development practices across products, including threat modelling and secrets management. · Design and maintain authentication and access control so each client’s data stays separate. · Ensure every service has logging, monitoring, alerting and backups, with tested recovery procedures. · Maintain CI/CD pipelines and Azure cloud infrastructure, keeping hosting costs under control. · Lead the response to production incidents, identify root causes and put preventive fixes in place. Team Standards & Mentorship · Create SOPs to maintain coding standards, review guidelines and best practices. · Conduct thorough code reviews that raise the quality of the team’s code, including AI-assisted code. · Mentor junior developers through pairing, feedback and progressively larger assignments, and track their growth. Position Requirements Requirements Required Education * Bachelor’s degree in Computing Science, Software Engineering, or a related field, or equivalent practical experience. Experience * 8+ years of professional software development experience, including 2+ years as a senior or lead developer owning production systems. * Experience taking over or rewriting an existing codebase in stages while it remains in use. Designations & Certifications * None required. * Certifications in cloud platforms (e.g., Microsoft Azure, AWS, or Google Cloud) or machine-learning specializations are considered an asset. Knowledge, Skills & Abilities * Expert React and TypeScript, including Next.js (App Router) and state management for both server and client state. * Strong Python for backend services: FastAPI or similar, async, pydantic, strict typing and pytest. * PostgreSQL in depth: schema design, migrations, query performance and row-level security. * Authentication: OAuth 2.0 and OpenID Connect, Microsoft Entra ID, and access control for many clients in one system. * Application security: secure development practices, threat modelling and secrets management. * Microsoft Azure in production: Container Apps or App Service, managed PostgreSQL, Key Vault, networking and cost management. * Observability: structured logging, metrics and tracing (OpenTelemetry, Azure Monitor or Application Insights), alerting and incident handling. * CI/CD with GitHub Actions, and Docker. * Agile and Scrum, including writing clear stories and acceptance criteria. * Uses AI coding assistants daily and reviews their output as rigorously as a colleague’s code. * Able to explain technical trade-offs to non-developers. Assets (Nice to have): * PostGIS and geospatial work: GeoPandas, Shapely, MapLibre or Leaflet. * Supabase and Vercel. * Payload CMS or another headless CMS. * Multi-tenant SaaS architecture. * Mining, exploration or geoscience experience. * Experience leading or growing a small dev team. * Ability to communicate in French. Working Conditions Office Work * Primarily works in a standard office environment with minimal exposure to physical hazards. * May encounter high-stress situations, especially when dealing with multiple projects and tight deadlines. * This position requires that the candidate will be in front of a computer for long periods, up to 8 hours a day. * Potential discomfort when working with computers for long periods may happen. Overall * A strong commitment to safety is required, with adherence to protocols. * Clear communication is essential for safety and maintaining a supportive work environment.

What you’ll do

Requirements

Candidates must have at least 8 years of professional software development experience, including 2 years in a senior or lead role. A bachelor's degree in a relevant field is required, along with expert-level proficiency in React, TypeScript, Python, and PostgreSQL.