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Philip O.

@purealmaz

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5.0
11

5.1

5.1

100%

AI | Full Stack | Mobile App | FinTech | Security

$45 USD / Hour

・

Flag of

Nigeria (6:54 PM)

・

Joined on May 27, 2025

・

2 Recommendations

$45 USD / Hour

・

Top 1% Developer | Scalable and Secured Full Stack & Mobile Solutions Ranked among the Top 20 Freelancers on this platform, I specialize in turning complex business visions into high-performance digital products. With over 9 years of experience and 750+ successful deliveries, I combine technical precision with a relentless focus on client ROI. Core Expertise Mobile: Flutter (Cross-platform), React Native, and Native iOS & Android Web & Frontend: React.js, Next.js, Angular, HTML5, Responsive and Modern Design Backend & API: Node.js, Django, FastAPI, and Laravel E-commerce: Shopify and WooCommerce Expert CMS and Builders: WordPress, Squarespace, and Webflow The Stats That Matter 400+ Mobile Apps Launched 350+ Web Platforms Built 100% On-Budget Completion Rate 100% On-Time Delivery Record 100% Acceptance Rate Why partner with me? You aren't just hiring a coder; you’re hiring a strategic partner. I provide clean, maintainable code and a seamless communication loop from kickoff to deployment. Ready to scale? Click ‘Hire Me’ and let’s discuss your project goals.

Verifications

On time

100%

On budget

100%

Accept rate

100%

Repeat hire rate

12%

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Portfolio

Portfolio

13880942
Telepie is a high-scale communication infrastructure project where I engineered a robust WhatsApp microservice and modernized the backend architecture to support rapid traffic growth. My role spanned from API integration to establishing enterprise-grade monitoring and external interoperability. Key Technical Implementations: High-Scale Microservice Architecture: Re-engineered the legacy backend into a scalable microservice framework. Designed the system to handle increasing concurrent traffic by optimizing resource allocation and implementing efficient request-handling logic. Multi-Tiered WhatsApp Integration: Enterprise Layer: Integrated the WhatsApp Business API for high-volume, professional-grade communication. Lite Layer: Deployed a WhatsApp Lite API to provide a lightweight, cost-effective alternative for smaller-scale user requirements. Interoperability & External Access: Developed a secure API Key Management system, enabling external developers to integrate Telepie ser

Telepie | WhatsApp Microservice

13880915
Lead Engineer & Learning Sciences Researcher The Learners App is a sophisticated ed-tech platform designed to transform static educational content into pedagogically optimized learning journeys. Moving beyond basic LLM integrations, the project focuses on the engineering of a custom content-generation engine that applies cognitive science to automate curriculum design. Key Technical Implementations: Proprietary Pedagogical Engine: Architected a high-performance backend that ingests raw PDFs and unstructured notes to generate "memory-friendly" lessons. Unlike standard wrappers, this engine uses custom logic to restructure data into incremental, "scaffolded" modules using simplified language and strategic information density. Active Recall & Assessment Logic: Integrated automated question-generation systems that deploy pedagogical checks after each lesson. The system dynamically inserts interactive diagrams to reinforce visual learning and ensure comprehen

The Learners App

13880861
Full-Stack Fintech Engineer & Security Architect Apex Pay is a specialized, dual-mode fintech solution designed to bridge the accessibility gap in digital finance. While fully functional for sighted users, it features a specialized interface for the visually impaired, combining high-security payment processing with innovative proximity-based transaction technology. Key Technical Implementations: Proximity-Based "Air Pay" Protocol: Developed a proprietary peer-to-peer (P2P) discovery mechanism that allows for direct financial transfers via proximity. This removes the barrier of manual contact entry or visual QR scanning, significantly improving autonomy for visually impaired users. Unified Accessibility UI/UX: Leveraged Flutter to build a hybrid interface. It integrates the "Orb" navigation engine and high-fidelity Text-to-Speech (TTS) overlays, ensuring that complex financial actions—like bills payment and wallet funding—are consistent and accessible. Finan

APEX PAY

13880778
Full-Stack Web Developer & Architect Lantern is a robust, feature-rich crowdfunding platform designed for the startup ecosystem, modeled after the Kickstarter paradigm. Built with React and Vite, the application prioritizes a high-conversion "frictionless funding" experience while maintaining a sophisticated management suite for both investors and administrators. Key Technical Implementations: Frontend Optimization: Developed using React and Vite to ensure ultra-fast load times and a highly responsive single-page application (SPA) architecture, critical for maintaining investor engagement. Frictionless Transaction Logic: Engineered a "One-Tap" funding mechanism that bypasses traditional authentication barriers, allowing for anonymous/guest contributions to maximize conversion rates. Scalable Data Architecture: Utilized Firebase Firestore for real-time document-based storage. Implemented complex security rules to handle multi-user roles (Founder, Investor, A

Lantern Startup Funding

13880754
Apex Echo is a cross-platform social networking ecosystem engineered specifically for visually impaired users. Built with Flutter, the application replaces traditional graphical interface dependencies with a high-fidelity tactile and auditory navigation framework. Key Technical Implementations: Proprietary Navigation Engine: Designed and implemented a custom "Orb" UI component, a gesture-driven navigation system that allows users to traverse complex menus without visual confirmation. Haptic-Aural Feedback Loop: Engineered a synchronized feedback system using vibration patterns and Text-to-Speech (TTS) overlays. This ensures consistent spatial awareness and action confirmation across all application states. Serverless Backend Architecture: Architected a scalable backend using Firebase Functions and Cloud Firestore. Implemented logic for real-time data syncing, automated contact discovery, and ephemeral data management. Feature Engineering: Chat Hub: Developed a seamless

Apex Echo

Apex Echo is a cross-platform social networking ecosystem engineered specifically for visually impaired users. Built with Flutter, the application replaces traditional graphical interface dependencies with a high-fidelity tactile and auditory navigation framework. Key Technical Implementations: Proprietary Navigation Engine: Designed and implemented a custom "Orb" UI component, a gesture-driven navigation system that allows users to traverse complex menus without visual confirmation. Haptic-Aural Feedback Loop: Engineered a synchronized feedback system using vibration patterns and Text-to-Speech (TTS) overlays. This ensures consistent spatial awareness and action confirmation across all application states. Serverless Backend Architecture: Architected a scalable backend using Firebase Functions and Cloud Firestore. Implemented logic for real-time data syncing, automated contact discovery, and ephemeral data management. Feature Engineering: Chat Hub: Developed a seamless

Apex Echo

Apex Echo is a cross-platform social networking ecosystem engineered specifically for visually impaired users. Built with Flutter, the application replaces traditional graphical interface dependencies with a high-fidelity tactile and auditory navigation framework. Key Technical Implementations: Proprietary Navigation Engine: Designed and implemented a custom "Orb" UI component, a gesture-driven navigation system that allows users to traverse complex menus without visual confirmation. Haptic-Aural Feedback Loop: Engineered a synchronized feedback system using vibration patterns and Text-to-Speech (TTS) overlays. This ensures consistent spatial awareness and action confirmation across all application states. Serverless Backend Architecture: Architected a scalable backend using Firebase Functions and Cloud Firestore. Implemented logic for real-time data syncing, automated contact discovery, and ephemeral data management. Feature Engineering: Chat Hub: Developed a seamless

Apex Echo

13880942
Telepie is a high-scale communication infrastructure project where I engineered a robust WhatsApp microservice and modernized the backend architecture to support rapid traffic growth. My role spanned from API integration to establishing enterprise-grade monitoring and external interoperability. Key Technical Implementations: High-Scale Microservice Architecture: Re-engineered the legacy backend into a scalable microservice framework. Designed the system to handle increasing concurrent traffic by optimizing resource allocation and implementing efficient request-handling logic. Multi-Tiered WhatsApp Integration: Enterprise Layer: Integrated the WhatsApp Business API for high-volume, professional-grade communication. Lite Layer: Deployed a WhatsApp Lite API to provide a lightweight, cost-effective alternative for smaller-scale user requirements. Interoperability & External Access: Developed a secure API Key Management system, enabling external developers to integrate Telepie ser

Telepie | WhatsApp Microservice

13880915
Lead Engineer & Learning Sciences Researcher The Learners App is a sophisticated ed-tech platform designed to transform static educational content into pedagogically optimized learning journeys. Moving beyond basic LLM integrations, the project focuses on the engineering of a custom content-generation engine that applies cognitive science to automate curriculum design. Key Technical Implementations: Proprietary Pedagogical Engine: Architected a high-performance backend that ingests raw PDFs and unstructured notes to generate "memory-friendly" lessons. Unlike standard wrappers, this engine uses custom logic to restructure data into incremental, "scaffolded" modules using simplified language and strategic information density. Active Recall & Assessment Logic: Integrated automated question-generation systems that deploy pedagogical checks after each lesson. The system dynamically inserts interactive diagrams to reinforce visual learning and ensure comprehen

The Learners App

13880861
Full-Stack Fintech Engineer & Security Architect Apex Pay is a specialized, dual-mode fintech solution designed to bridge the accessibility gap in digital finance. While fully functional for sighted users, it features a specialized interface for the visually impaired, combining high-security payment processing with innovative proximity-based transaction technology. Key Technical Implementations: Proximity-Based "Air Pay" Protocol: Developed a proprietary peer-to-peer (P2P) discovery mechanism that allows for direct financial transfers via proximity. This removes the barrier of manual contact entry or visual QR scanning, significantly improving autonomy for visually impaired users. Unified Accessibility UI/UX: Leveraged Flutter to build a hybrid interface. It integrates the "Orb" navigation engine and high-fidelity Text-to-Speech (TTS) overlays, ensuring that complex financial actions—like bills payment and wallet funding—are consistent and accessible. Finan

APEX PAY

13880778
Full-Stack Web Developer & Architect Lantern is a robust, feature-rich crowdfunding platform designed for the startup ecosystem, modeled after the Kickstarter paradigm. Built with React and Vite, the application prioritizes a high-conversion "frictionless funding" experience while maintaining a sophisticated management suite for both investors and administrators. Key Technical Implementations: Frontend Optimization: Developed using React and Vite to ensure ultra-fast load times and a highly responsive single-page application (SPA) architecture, critical for maintaining investor engagement. Frictionless Transaction Logic: Engineered a "One-Tap" funding mechanism that bypasses traditional authentication barriers, allowing for anonymous/guest contributions to maximize conversion rates. Scalable Data Architecture: Utilized Firebase Firestore for real-time document-based storage. Implemented complex security rules to handle multi-user roles (Founder, Investor, A

Lantern Startup Funding

13880754
Apex Echo is a cross-platform social networking ecosystem engineered specifically for visually impaired users. Built with Flutter, the application replaces traditional graphical interface dependencies with a high-fidelity tactile and auditory navigation framework. Key Technical Implementations: Proprietary Navigation Engine: Designed and implemented a custom "Orb" UI component, a gesture-driven navigation system that allows users to traverse complex menus without visual confirmation. Haptic-Aural Feedback Loop: Engineered a synchronized feedback system using vibration patterns and Text-to-Speech (TTS) overlays. This ensures consistent spatial awareness and action confirmation across all application states. Serverless Backend Architecture: Architected a scalable backend using Firebase Functions and Cloud Firestore. Implemented logic for real-time data syncing, automated contact discovery, and ephemeral data management. Feature Engineering: Chat Hub: Developed a seamless

Apex Echo

Apex Echo is a cross-platform social networking ecosystem engineered specifically for visually impaired users. Built with Flutter, the application replaces traditional graphical interface dependencies with a high-fidelity tactile and auditory navigation framework. Key Technical Implementations: Proprietary Navigation Engine: Designed and implemented a custom "Orb" UI component, a gesture-driven navigation system that allows users to traverse complex menus without visual confirmation. Haptic-Aural Feedback Loop: Engineered a synchronized feedback system using vibration patterns and Text-to-Speech (TTS) overlays. This ensures consistent spatial awareness and action confirmation across all application states. Serverless Backend Architecture: Architected a scalable backend using Firebase Functions and Cloud Firestore. Implemented logic for real-time data syncing, automated contact discovery, and ephemeral data management. Feature Engineering: Chat Hub: Developed a seamless

Apex Echo

Apex Echo is a cross-platform social networking ecosystem engineered specifically for visually impaired users. Built with Flutter, the application replaces traditional graphical interface dependencies with a high-fidelity tactile and auditory navigation framework. Key Technical Implementations: Proprietary Navigation Engine: Designed and implemented a custom "Orb" UI component, a gesture-driven navigation system that allows users to traverse complex menus without visual confirmation. Haptic-Aural Feedback Loop: Engineered a synchronized feedback system using vibration patterns and Text-to-Speech (TTS) overlays. This ensures consistent spatial awareness and action confirmation across all application states. Serverless Backend Architecture: Architected a scalable backend using Firebase Functions and Cloud Firestore. Implemented logic for real-time data syncing, automated contact discovery, and ephemeral data management. Feature Engineering: Chat Hub: Developed a seamless

Apex Echo

5.0 · 11 Reviews
11 Reviews
User Avatar
Flag of

Marteijn N.

5.0

$200 USD

1 month ago

Poc for microsoft authenitcator

Capable developer that also knows how to document steps needed on our side.

PHP
Android
HTML
Software Development

+1 more

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Marteijn N.

5.0

$250 USD

1 month ago

Wildfly Authenticator Integration Sample

I would like more developrs like this. Very efficient.

Java
JSP
JavaScript
XML
JSON

+3 more

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N
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Nick V.

5.0

$250 USD

5 months ago

Tab Groups

Simply amazing! Can't wait for the next one.

Android
HTML
Node.js
Software Development

+1 more

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Former Client (inactive)

5.0

₹83,000 INR

5 months ago

Kickstarter Style Crowdfunding Site

Philip was great to work with and the whole process felt smooth from start to finish. The best part is he explains things clearly whenever needed and handles revisions patiently. His solid backend knowledge shows in how the website has turned out. Very professional and reliable. Would definitely work with him again!

PHP
Website Design
Graphic Design
HTML
Web Development

+3 more

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Joao M.

5.0

£350 GBP

6 months ago

Fix MT4 Indicator & Build EA - MAX 100£ in TOTAL

Philip has been truly exceptional as a coder! 10*! Very professional, patient with my requests, always very quick and responsive, has been very refreshing to find a person like him to deliver and look after my project as if it was his own! Even though there was some things that couldnt be done the way i asked, he found a way and very quickly also delivered an alternative , to which i am pleasently surprised to see, as you often dont have the experience to see things differently! Thank you!

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Experience

Lead Engineer

Jan, 2025 - Present

•

1 year, 4 months

Learners App (learners-app.com)

Jan, 2025 - Present

•

1 year, 4 months

Currently building a tool that combines AI with cognitive science to help students study more effectively. Uses techniques like spaced repetition, active recall, and personalized learning plans to improve retention and reduce study time.

Jan, 2025 - Present

•

1 year, 4 months

Full-Stack Engineer

Aug, 2022 - Dec, 2023

•

1 year, 4 months

Jumia

Aug, 2022 - Dec, 2023

•

1 year, 4 months

Built and optimized high-performance e-commerce apps at Jumia, ensuring reliability during peak traffic. Resolved backend bottlenecks, improved load times, and reduced infrastructure costs. Refined UI/UX with design teams to boost conversions. Collaborated with DevOps for smooth deployments and platform scalability.

Aug, 2022 - Dec, 2023

•

1 year, 4 months

Full Stack Engineer (Intern)

Nov, 2020 - Dec, 2021

•

1 year, 1 month

Flutterwave

Nov, 2020 - Dec, 2021

•

1 year, 1 month

Completed a 1-year internship at Flutterwave as a Junior Full-Stack Engineer. Contributed to internal tools, helped build scalable web apps, and improved system reliability. Gained hands-on experience with Agile, code reviews, and production workflows. Left after receiving a full-time offer from Jumia.

Nov, 2020 - Dec, 2021

•

1 year, 1 month

Education

University of Ibadan

2019 - 2023

•

4 years

Computer Science (BSC)

Flag of

Nigeria

2019 - 2023

•

4 years

Qualifications

Back-End Development and APIs

2019

FreeCodeCamp

Completed the Back-End Development and APIs Certification

2019

Front End Development Libraries

2018

FreeCodeCamp

Completed the FreeCodeCamp Front End Development Libraries Certification

2018

Responsive Web Design

2018

FreeCodeCamp

Earned the FreeCodeCamp.org responsive web design cetification in 2018

2018

Certifications

P

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