Senior Software Engineer, Add-Ons (Python/Django)

Location: Remote Belgium

Salary: €56,000–€74,000 EUR annually

Company

hirify.global is a non-profit-backed technology company building open-source products such as Firefox to support an open and accessible internet.

What you will do

• Deliver major features and architectural improvements across the Firefox Add-ons stack, including automated moderation pipelines, DevHub, and Reviewer tools.
• Build and operate production systems using Python/Django, MySQL, React/TypeScript, and asynchronous processing.
• Improve internal developer platforms, CI/CD pipelines, declarative infrastructure, testing, deployments, and operational safety.
• Develop observability systems, data-backed insights, monitoring, incident response, and platform reliability practices.
• Collaborate with engineers, reviewers, product managers, designers, QA, developer support, and community contributors.
• Document technical decisions and operations through design notes, ADRs, runbooks, and incident reports while mentoring peers.

Requirements

• Strong hands-on experience building and maintaining production applications with Python and Django.
• Experience operating reliable production software and improving CI/CD, automated testing, integration testing, and progressive delivery workflows.
• Strong understanding of observability, including metrics, logging, tracing, service-level objectives, and actionable alerting.
• Experience with internal tools or platforms, engineering standards, operational readiness, incident response, runbooks, and on-call practices.
• Ability to debug complex production issues and trace behavior across frontend, backend, asynchronous jobs, data stores, and infrastructure.
• Strong technical writing, collaboration, communication, and peer mentoring skills in a distributed team environment.

Nice to have

• Experience with Google Cloud, Kubernetes, infrastructure as code, or policy as code.
• Experience with SLOs, error budgets, chaos engineering, disaster recovery testing, or production readiness reviews.
• Experience with trust and safety, automated moderation, abuse prevention, adversarial systems, or open-source contributions.

Culture & Benefits

• Open-source, mission-driven work focused on keeping the internet accessible and open.
• Performance-based bonus plans, country-specific holidays, birthday leave, and quarterly company wellness days.
• Medical, dental, vision, retirement, disability, life, and employee assistance benefits, varying by country.
• Home office stipend, professional development budget, well-being stipend, and paid parental leave.
• Inclusive workplace with accommodations available for qualified individuals with disabilities.