About the role

Senior Product Engineer designing backend systems for parcelLab's post-purchase experience platform. Collaborating with Product and Design teams to ship efficient services for returns experience.

Responsibilities

You will design and evolve the backend systems behind our returns experiences—owning problems end‑to‑end: clarify outcomes, collaborate with Product and Design, and ship reliable, observable services that make returns fast, clear, and correct.
Lead services & workflows from concept to impact: model data, implement APIs and jobs, instrument, launch, and iterate.
Design and evolve domain models & rules for returns (RMAs, eligibility, routing, bundles) with safe migrations and clear boundaries.
Build and maintain APIs (REST/GraphQL) and endpoints that power our server‑driven UI (HTMX/Alpine).
Integrate with commerce systems (e.g., Shopify) and order/warehouse tools: design and operate API/webhook integrations, keep orders and RMAs in sync, and ensure idempotent, reliable synchronization and backfills.
Raise the bar on engineering practices: typing (mypy), validation (Pydantic), code quality (Ruff), CI/CD, and thoughtful reviews.
Own quality in production: monitor performance and error rates; fix what you ship.

Proficiency with Python in production, ideally (nice to have) with Django.
Strong SQL fundamentals, relational modeling, and safe migrations.
Experience building APIs (REST) and working with job queues.
Comfort with modern Python tooling: uv, mypy, Ruff, Pydantic.
Testing mindset (unit/integration) and continuous delivery know‑how.
Evidence of agency: stories where you drove an outcome end‑to‑end.
Bonus Points: Experience with server‑driven UIs (Django templates + HTMX/Alpine).
Tailwind CSS and solid CSS fundamentals (layout, responsive, a11y) for pragmatic UI tweaks in server‑rendered templates.
Shopify ecosystem exposure (Admin API, webhooks, embedded apps).
E‑commerce/returns domain familiarity (bundles, routing, warehousing).
Observability and SLO practice (metrics, tracing, error budgets); performance tuning in Django at scale.

Plenty of room for your own ideas...space to try, fail and learn!
Comprehensive 30-60-90 day onboarding plan in place from the very first day to help you integrate seamlessly with the rest of the company and understand new responsibilities
Equipped with the latest MacBook or PC, as a digital-first company, you choose whether to work entirely from home, in one of our offices or a mix that suits you. Not close to one of our offices No problem! Find yourself a co-working space instead, and we’ll help cover the costs
Career development opportunities, including our Leadership Development Program and our Mentorship Program, as well as online language courses, available budgets for further training
Stay grounded with our free meditation, mindfulness and coaching sessions via our mental wellbeing platform TELUS.health
Regular company retreats, parcelLab events (in-person and online), local and regional meet-ups, as well as team off-sites
Be part of a motivated, diverse and international team made up of over 25 different nationalities; and with a great rating for company culture and employee experience on Glassdoor, you’ll love working here!