Software Engineer

Job Overview

We are hiring engineers who build with agents, not just with editors.

Mumzworld is the largest mother, baby and child e-commerce platform in the Middle East - millions of customers, a deep catalogue, and a stack that has to stay fast, correct and cheap at scale. We are rebuilding how our engineering team works around AI: agents write, review and test alongside us, and the engineers who compound fastest are the ones who know how to direct them.

This is a backend-heavy full stack role. You will own services end to end - schema to API to the React surface that consumes it - and you will be expected to ship at a pace that only makes sense if you are genuinely fluent with modern AI tooling.

Key Responsibilities

• Own backend services end to end. Design, build and operate NestJS/TypeScript services on PostgreSQL - data modelling, APIs, background jobs, caching, observability, on-call for what you ship.

• Close the loop on the frontend. Build the React interfaces that consume your APIs. You should be comfortable shipping a feature all the way to the customer without a handoff.

• Work at real e-commerce scale. Catalogue, cart, checkout, pricing, promotions, inventory, order orchestration - systems where correctness and latency both matter, in two languages and multiple markets.

• Build with agents by default. Use Claude Code and similar tooling as a core part of your workflow: planning, implementation, refactors, test generation, migrations, incident triage.

• Make the team faster, not just yourself. Author agent skills, subagents and workflows that other engineers reuse. Wire up MCP servers to our internal systems. Turn tribal knowledge into tooling.

• Ship AI into the product. Build LLM-powered features - search and discovery, content generation, support automation, merchandising assistance - with proper evals, guardrails and cost/latency budgets.

• Raise the bar on quality. Strong code review, meaningful tests, and a healthy scepticism about agent-generated code that looks right.

  WHAT "AI-NATIVE" MEANS HERE

  Not "I use Copilot sometimes." Concretely, we expect you to:

  • Drive a coding agent through a non-trivial change - scoping context, breaking work down, iterating on failures - rather than accepting the first output.

  • Write agent skills and reusable prompts/workflows that encode how work should be done in a specific codebase or domain.

  • Compose multi-step and multi-agent workflows for things like large refactors, test backfills, dependency upgrades and codebase audits.

  • Understand MCP (Model Context Protocol) - and be able to build or integrate a server that gives agents safe access to a real system.

  • Evaluate LLM output properly: eval sets, regression checks, cost and latency tracking. If you cannot measure it, you cannot ship it.

  • Know where agents fail - and review their output like you would a talented but overconfident junior engineer.

Requirments

• 3+ years building and running production software, with backend as your centre of gravity.

• Strong TypeScript/Node.js; production experience with NestJS or a comparable structured framework.

• Solid PostgreSQL - schema design, indexing, query tuning, migrations, transactions. You know why your query is slow.

• Working React proficiency - you can build and ship a clean, performant UI.

• Real experience with REST/GraphQL API design, async patterns (queues/events), caching and integration with third-party systems.

• Comfort with cloud infrastructure, CI/CD, Docker and modern observability tooling.

• Demonstrable, daily use of AI coding agents - and an opinion about how to use them well.

• Clear written communication. In an AI-native team, the quality of your writing is the quality of your engineering.

BONUS POINTS

• E-commerce, marketplace, retail or logistics systems experience.

• Built and shipped an LLM feature into production - including the unglamorous parts (evals, fallbacks, cost control).

• Published MCP servers, agent skills, plugins or open-source tooling.

• Experience with high-traffic systems, search relevance, or recommendation/personalisation.

• Arabic/English bilingual product experience.

OUR STACK

TypeScript · Node.js · NestJS · React · PostgreSQL · Redis · REST & GraphQL · Docker · AWS · GitHub Actions · Claude Code and agentic tooling throughout.

WHY MUMZWORLD

• The region’s category leader - real scale, real customers, real problems.

• An engineering org actively investing in AI-native ways of working, not just talking about them.

• Small teams, high ownership, short path from idea to production.

• Competitive package, health cover, and a genuine say in the tools you use.