Ammar.
Ammar Oker

Ammar Oker — Portfolio

Sr. Full Stack Engineer

Building scalable, observable, and resilient web applications. Expertise in Node.js, React, Microservices, and cloud-native architectures. Bridging the gap between complex backend systems and beautiful user experiences.

Experience

Founder & Full Stack Engineer

Oker.cloud01/2023 – Present
  • Founded and developed Oker Cloud, a subscriber-management platform for WISP operators serving 500k monthly end subscribers.
  • Built CRM, RADIUS authentication, billing, customer communications, salespoints, inventory, support tickets, and analytics.
  • Designed the platform to unify subscriber operations from sign-up to support, with cloud and edge deployment options for RADIUS.
  • Developed API-first workflows and real-time synchronization across operational modules.
  • Built tools and infrastructure to support reliability, observability, and scalable operations.

Senior Full Stack Software Engineer

UMA01/2024 – 12/2025
  • Architected and developed core microservices-based platform components to support scalable, decoupled services and rapid feature delivery.
  • Implemented a full SCIM server for standards-compliant user/group provisioning and automated identity lifecycle management.
  • Integrated multiple 3rd-party device and sensor vendors using MQTT: designed ingestion pipelines, message parsing/mapping, vendor authentication, and reliable delivery to downstream services.
  • Built RESTful APIs and admin tooling for device management, improving onboarding time for new vendors.
  • Contributed to containerized deployments, CI/CD pipelines, monitoring/alerting, and mentored team members.

Founding Engineer

Flowbase10/2023 – 06/2024
  • Lead engineer reporting to the founder, building a Shopify marketing automation platform competing with Klaviyo.
  • Designed a real-time customer data and segmentation system that ingested storefront events and enabled dynamic audience creation.
  • Developed a no-code, highly customizable form builder for embedded Shopify storefront experiences.
  • Built a multi-channel campaign automation engine supporting email and SMS flows with varied event-based triggers.

Tech Lead & Sr. Backend Engineer

Rising Digital11/2022 – 01/2024
  • Led design and implementation of the Rising Mobile Proxy service and platform infrastructure using containerized microservices.
  • Defined backend architecture, established API contracts, and implemented deployment strategies.
  • Built CI/CD pipelines and automated testing to reduce manual release work and increase deployment frequency.
  • Improved service reliability and observability through monitoring and incident-reduction practices.

Frontend Engineer

Getir11/2021 – 10/2022
  • Contributed to migrating the web platform to a micro-frontend architecture and developed reusable React components.
  • Converted the web client into a Progressive Web App (PWA), improving engagement metrics.
  • Provided backend support during understaffed periods to maintain on-time deliveries.

Frontend Engineer

Volt Lines09/2020 – 10/2021
  • Built a Vue.js design system and a mission-control web app.
  • Substantially reduced bundle size to improve load times and UX.

Frontend Developer

Lippo Grup01/2019 – 08/2020
  • Implemented interactive front-end features using JavaScript, HTML5, and CSS3; followed SEO and accessibility best practices.

Technical Expertise

JavaScript
TypeScript
Node.js
React
Vue.js
Docker
Kubernetes
REST APIs
Microservices
CI/CD
MQTT
PostgreSQL
Redis
Monitoring & Observability
System Design
Progressive Web Apps
Git
Agile Development

Ready to build something amazing?

I'm always open to discussing new projects, creative ideas or opportunities to be part of your visions.

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