Full-Stack Engineer (B2B e-Commerce)

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Location: Remote
Department: Engineering
Employment Type: Full-Time

About the platform

A B2B ordering & customisation portal where authorised users (teams, retailers, leagues) configure products and place/manage orders. The app is Rails-based with a modern JS front end (Vite), background processing (Sidekiq/Redis), and integrations for product customisation, fit/scans, and shipping. Data lives primarily in PostgreSQL, with some document-style payloads persisted in a secondary store.

What you’ll do

  • Build and enhance end-to-end workflows (browse → configure → order → track) across Rails controllers/services and a JS SPA front end.
  • Integrate with internal/external REST APIs (auth, pagination, retries, timeouts), and harden data contracts for order and “recipe/spec” payloads.
  • Implement and maintain background jobs (imports, assets, emails) using Sidekiq/Redis with idempotency, retries/backoff, and basic alerting.
  • Contribute to data modeling and validations in PostgreSQL; handle document-like data where appropriate (JSON/JSONB or a document store).
  • Improve quality via request/service/worker tests, performance tuning, and pragmatic observability (logs/metrics).
  • Participate in code reviews, grooming, and small design docs; help keep developer setup friction low.

Core tech you’ll work with

  • Backend: Ruby on Rails (API + server-rendered endpoints), ActiveJob/Sidekiq
  • Frontend: JavaScript, Vite (SPA build tooling)
  • Data: PostgreSQL (primary), JSON/JSONB (and optionally a document store), Redis (queues/cache)
  • Infra/Tooling: Git, CI, environment configs, secrets management

Must-have experience

  • 3–5 years building web applications with Ruby on Rails, including controllers/services, validations, and background jobs (ActiveJob/Sidekiq).
  • Strong SQL and schema literacy in PostgreSQL; comfort reading/writing JSON payloads and enforcing validations.
  • Hands-on with Sidekiq + Redis in production: queues, concurrency, idempotent jobs, retries/backoff, and (basic) scheduling.
  • API integration fundamentals: auth (tokens/keys), pagination, rate limits, timeouts, and resilient retries.
  • Front-end fundamentals with modern JS (fetch/XHR flows, build tooling such as Vite) to wire UI actions to backend endpoints.
  • Practical security hygiene: input validation, safe file handling, secrets, least-privilege access.
  • Familiarity with a document store (e.g., MongoDB) or advanced JSONB patterns in Postgres.

Nice to have

  • Experience with product customisation or asset pipelines (templates/elements, artwork generation, image processing).
  • Shipping/logistics integrations (e.g., EasyPost/UPS/FedEx), or fit/scan style integrations.
  • Observability basics (structured logging, metrics, dashboards) and performance profiling.

Soft Skills

  • Self-starter with the ability to take ownership of features from design to deployment.
  • Strong communication skills to work with cross-functional teams.
  • Ability to translate business requirements into technical solutions.
  • Detail-oriented with a focus on delivering high-quality, maintainable code.

What Success Looks like (first 90 days)

  • Ship an improvement to a core flow (e.g., order submission or bulk import) with measurable latency/throughput gains.
  • Add or upgrade one external API integration and land tests that validate the contract.
  • Instrument key Sidekiq jobs with sane retries and minimal alerting; remove any long-running work from web threads.
  • Author a small “how-to” or runbook entry (setup, tracing an order, or import workflow) to reduce onboarding friction.

What We Offer

  • Opportunity to work on a high-impact B2B commerce platform that serves global brands.
  • A collaborative, innovative, and flexible work environment.
  • Exposure to cutting-edge technologies in e-commerce and product customisation.

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