Senior Backend Developer

Senior Backend Developer (Remote)

Role Overview

Design and scale the core backend systems that power our business-critical workflows. As a

Senior, you'll own architecture decisions, integrations, and reliability in a modern

TypeScript/serverless environment.

Key Responsibilities

• Develop and maintain scalable API services for core business workflows using

Node.js/TypeScript, including Next.js API routes and serverless functions.

• Integrate third-party platforms (e-commerce, payment, shipping) via webhooks and

GraphQL/REST APIs; ensure secure authentication and authorisation.

• Implement resilient asynchronous workflows with Pub/Sub-style messaging, retries,

idempotency and data reconciliation.

• Model and optimise data across GraphQL/Data Connect and SQL-based systems; balance

performance and cost.

• Improve observability and diagnostics using feature flags, telemetry and tracing tools.

• Collaborate closely with frontend, product and DevOps teams to deliver end-to-end

features; lead testing strategy with strong coverage.

Required Skills

• 5+ years of backend engineering with Node.js and TypeScript; experience designing

high-volume APIs and microservices.

• Solid understanding of distributed systems and event-driven workflows; experience with

serverless/cloud-native services and message queues.

• Strong data modelling and query optimisation skills in SQL and GraphQL contexts.

• Experience with authentication and authorisation frameworks (Firebase Auth, OAuth,

etc.).

• Proficiency in automated testing (Vitest/Newman or similar) and code reviews.

Tech Stack

• Core: TypeScript, Node.js, Next.js API routes

• Cloud & Data: GCP, Firebase (Auth, Cloud Functions, Firestore), Data

Connect/GraphQL, SQL databases, BigQuery (analytics)

• Messaging & Orchestration: Pub/Sub-style asynchronous processing

• Tooling: Feature flags & telemetry, Vitest/Playwright/Postman for testing

Nice to Have

• Experience with e-commerce/order-management integrations.

• Familiarity with Python/FastAPI sidecar services and analytical pipelines.

• Exposure to BigQuery and OpenTelemetry-based tracing.