( Hi, I'm Zakarya Rahim )
Chlef → Remote
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BackendSystemsEngineer®
I design and ship event-driven backend systems: microservices and order pipelines that hold up under real load.
What I can build
Whatever the stack, I take ownership from the first scope call to the production deploy. This is where I can help.
Backend Engineering
01Full-Stack Apps
02System Architecture
03Cross-Platform
04Selected work
(01)
Orders Microservice: Multi-Channel Fulfillment
Event-driven orders microservice for a national delivery company, ingesting HMAC-validated webhooks from Shopify, WooCommerce, and Google Sheets and orchestrating fulfillment end to end.
→ Single source of truth for orders across three sales channels
(02)
HRForce: HR Management Platform
Enterprise HR platform spanning 26 NestJS modules: from recruitment to resignation: with CASL-based RBAC, Arabic/RTL document generation, and an async RabbitMQ audit trail.
→ One platform replaces fragmented spreadsheets across the full employee lifecycle
(03)
On-Demand Service Platform
Order management platform for an on-demand service business, built around a 9-state order state machine with soft deletes, crypto-secure public IDs, and PDF document generation.
→ Order lifecycle is fully explicit: no order can reach an invalid state
(04)
Logistics KPI & Courier Scoring Dashboard
Courier performance platform for a delivery network: a 5-dimension scoring engine, an 8-role access model over a 4-level hierarchy, and a resilient Celery daily ingestion pipeline.
→ Courier performance became measurable and comparable across the whole network
How I work
A consistent process from a free call to a production deploy, whatever the stack.
( Discovery )
Free call, fixed-price proposal
A free 20-minute call to map the domain: entities, data flow, and where things are likely to break. Followed by a fixed-price proposal before any code is written, so you know the cost upfront.
Ship in vertical slices
Each feature moves from API to database to tests before the next one starts, so there's always something working end to end.
Design for the failure case
Retries, idempotency, and race conditions get the same attention as the happy path: production doesn't grade on how clean the demo looked.
Document the handoff
Commit history, READMEs, and API docs stay current, written for the next engineer to touch the code: including future me.
Systems that hold up under real load
Chlef, Algeria
Available for freelance
Years shipping production systems
Projects delivered end to end
Typical reply to a new enquiry
I build reliable backend systems for logistics, HR, SaaS, and e-commerce. I specialize in API architecture, domain-driven design, asynchronous processing, and production deployments, with 3+ years of hands-on experience shipping software that scales.
I build systems that hold up under real load, with real users. My stack centers on NestJS and Django/DRF, with deep experience in PostgreSQL, RabbitMQ, Redis, Celery, TypeORM, and Docker.
Where I've shipped
OURQUILANE - YALIDINE DELIVERY
Mar 2024 – Present · RemoteFull Stack Software Engineer, Contractor
Self-employed
2024 – Present · RemoteFreelance Software Engineer
Tools of the trade
Backend
Databases
Messaging & Architecture
Let's work together
Available for freelance and contract work, fully remote. Tell me what you're building and I'll reply within 24 hours.