Birmingham, United Kingdom

Osama Bin Shiraz

Technical Lead / Senior Full Stack Engineer
Open to UK / EU roles

I build and lead engineering for SaaS and integration-heavy platforms. For the last six years I've delivered production systems for US and UK companies. The kind of work where a Shopify store has to stay in sync with an ERP at all hours, a healthcare team can't afford to drop a referral, and a loyalty platform has to handle real-time events without missing one.

I lead teams, but I stay close to the code: architecture, reviews, and the late-night production debugging when something breaks. I'm strongest where systems meet: APIs, queues, webhooks, and the unglamorous reliability work that keeps a platform standing.

Selected Work

Shopify ↔ Acumatica ERP integration

High-volume product and inventory sync, catalog mapping, order workflows, and operational dashboards, with the error recovery and alerting needed to keep a live store and an ERP in agreement around the clock.

LaravelPostgreSQLRedis queuesShopify APIWebhooksAWS

Healthcare operations platform

Referral and scheduling workflows, therapist matching logic, credentialing, documentation templates, and audit-friendly data structures for a US operations team where dropped data has real consequences.

Node.jsReactPostgreSQLREST APIsReporting

POS-connected loyalty platform

Backend APIs, queue workers, scheduled jobs, and webhook processing feeding real-time events, analytics, and notifications, coordinated across mobile and backend delivery.

Node.jsReact NativeEvent-drivenAnalyticsNotifications

Experience

Engineering Team Lead / Senior Full Stack Engineer
Jun 2022 – Present
Highwater · long-term US client engagement via OBS Technologia · Remote
Engineering Lead
Jul 2020 – Present
OBS Technologia · software consultancy delivering for US / UK clients
Mobile Application Developer
2020
O3 Interfaces · native iOS (Swift, SwiftUI)
JavaScript / iOS Developer
2019
airtango · React.js and iOS
Web Application Developer
2018 – 2019
developers lab · full-stack (Laravel, Python)

Stack

Languages & Frameworks
PHP 8 / Laravel · JavaScript / TypeScript · React · Next.js · Node.js · React Native
Data & Infrastructure
PostgreSQL · MySQL · Redis · queue workers · webhooks · AWS (EC2/RDS) · Docker · Nginx · Linux · Git · CI/CD
E-commerce & Integrations
Shopify · Magento 2 · BigCommerce · Acumatica ERP · Salesforce · HubSpot · Klaviyo · REST & GraphQL
Practices
System design · API architecture · code review · production support & incident response (Sentry, New Relic) · Agile

Education

MSc Data Science & Artificial Intelligence
2026 – 2027
University of Leicester, UK · in progress
BSc Computer Science
2016 – 2020

Open to UK / EU Technical Lead and Senior Full Stack roles: remote, hybrid, or relocation. Graduate Route eligible from 2027; open to visa-sponsored roles.