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Português
$
USD
Anjum Zaki
@anjum_multiware
Level 2
Mobile App and Backend Developer, 8 Years Experience
Paquistão
Inglês, Urdu
Sobre mim
Senior developer with 8+ years building production mobile apps and backend systems. Over 100 five-star reviews on Fiverr across React Native apps, Node.js APIs, and integrations.
What I build:
-Cross-platform mobile apps with React Native and Expo
-Node.js and Express REST APIs with MongoDB or PostgreSQL
-Payment gateway, auth, and IoT integrations
-Dockerized backends ready for production
I treat every project like my own product. Clean code, clear communication, and I don't leave loose ends. Message me if you need someone who can architect and ship.
Habilidades
Anjum Zaki
US$ 40/hora
offline •
Tempo médio de resposta: 1 hora
Conheça meus serviços
Desenvolvimento Multiplataforma
I will create android and ios application in react native
Desenvolvimento Multiplataforma
I will make react native mobile app
Quer trabalhar com remuneração por hora?
Diga a Anjum Zaki o que você precisa.
US$ 40
/
horaPortfólio
Experiência profissional
Solutions Architect
Techverx • Período integral
Nov 2021 - Feb 2026 • 4 yrs 3 mos
Fintech & Payment Systems Architect | Spring Boot Backend AMOS – Payment Processing System Architected and developed a complete Spring Boot backend for a blockchain-based cashback wallet platform serving thousands of users. Built RESTful APIs for payment processing, token transactions, and wallet management. Implemented JWT/OAuth2 via Spring Security, microservices architecture with Spring Cloud, and Redis caching for sub-second response times. Integrated blockchain for token settlement, multiple payment gateways for cashback distribution, and Spring Data JPA with PostgreSQL for transactional data. Deployed via Docker/CI-CD with GitHub Actions. PCI-compliant with structured logging, circuit breaker patterns, and high unit test coverage using JUnit/Mockito. Air Arabia – Flight Booking & Payment Platform Built payment processing system handling thousands of daily transactions with 150+ integrated payment gateways. Implemented PCI-compliant card tokenization, JWT authentication, and containerized auto-scaling services. Developed comprehensive REST APIs for booking flow and payment management. VoucherSkout – Digital Payment Marketplace Architected real-time voucher redemption payment processing. Integrated merchant APIs via REST and SOAP, implemented JWT-secured transaction workflows, and built real-time payment notification systems. CarbonEx – Cryptocurrency Exchange Platform Architected a fully functional crypto exchange with carbon credit tokenization on Ethereum. Built a sub-second order matching engine, multi-sig wallet management, and KYC/AML compliance workflows including identity verification, transaction screening, and SAR pipelines. Deployed microservices backend on Docker/Kubernetes with smart contract architecture for token issuance and settlement.
118 Avaliações
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Classificação detalhada
- Nível de comunicação do freelancer
- Qualidade da entrega
- Valor da entrega
1-5 fora das 118 avaliações
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macmidge
Estados Unidos
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It was a pleasure to work with Anjum. I gave him an idea of what I wanted in my scale app and he guided me through the process. I am at best a novice when it comes to BLE. I made a working model of the device that the app will interface with and we communicated well through the process of making it a good tool for my scale applications.
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macmidge
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Anjum is a great person to work with. Knowledge and expertise is worth every penny spent on this project
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clearsolutions
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trepcat
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You NEED someone like Anjum. Someone who won’t give up until it’s absolutely right. Thank you Anjum!
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chris_broderick
Estados Unidos
He knows his stuff, is a very good guy, quality code, and is patient and ready to understand. He puts in a lot of effort just to make sure everything is perfect. I will always work with this guy because he takes projects like they are his personal work. Thank you Anjum.
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