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API Node.js Python RESTful API Software Architecture
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Fatih SARAL

@fatihsaral

4.9
13

6.8

6.8

85%

SaaS & Payment Dev | Python · Node.js · React

$60 USD / Hour

・

Flag of

Turkey (1:10 AM)

・

Joined on May 23, 2017

・

3 Recommendations

$60 USD / Hour

・

From Idea to Product – End-to-End Software & Hardware Development (Powered by Paymore) We provide end-to-end software solutions for mid- and large-scale SaaS, Fintech, and Payment Systems projects. From project analysis and system architecture to DevOps, Backend, Frontend, Mobile App development, and UI/UX design — we handle the full product lifecycle. Areas of Expertise • Online payment systems (Virtual POS, SoftPOS, EFT POS) – Powered by Paymore • SaaS platforms and B2B portals • Telemetry and IoT integrations (Vending, Car Wash, Laundry, Parking, and more) • Microservice architecture and scalable APIs • Cloud infrastructure (DigitalOcean, AWS) • CI/CD and DevOps pipelines Services Offered • Project management and technical consultancy • Backend API development (Node.js, Kotlin, Python) • Frontend development (Angular, Vue.js, HTML/CSS) • Mobile app development (Android - Kotlin, Flutter) • UX/UI design and prototyping (Figma) • Server setup and infrastructure optimization Highlighted Projects • EVEND – Cashless payment and telemetry system for vending machines [login to view URL] • EYEDIUS – AI-powered smart security system [login to view URL] With Paymore, we deliver cutting-edge payment and monitoring technologies for the retail and self-service industries. If you’re looking for a reliable and full-scope tech partner, I’m ready to collaborate.

Verifications

On time

97%

On budget

97%

Accept rate

88%

Repeat hire rate

15%

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Portfolio

Portfolio

10344142
We enable you to receive payments in your systems with Stripe, which is a worldwide valid and payment platform. We offer Stripe powerful payment methods and features. PAYMENTS - Payment - Checkout - Elements - Payment Links - Connect - Invoicing - Billing - Terminal FINANCIAL SERVICES - Corporate Card - Capital - Issuing - Treasury BUSINESS OPERATIONS - Radar - Data Pipeline - Sigma - Atlas - Climate - Tax - identity - Revenue Recognition - Financial Connections

Stripe for E-Commerce & All Payments

10015000
It enables the detection of unwanted persons in a closed area with the Face Recognition System and informing the managers with methods such as SMS, Push Notification, Alert. The Face Recognition Algorithm on the system has been developed completely for the project. Within the scope of the project, processes were optimized with Artificial Intelligence. There are 3 layers in the project; - Desktop App - SaaS User Dashboard - SaaS Admin Dashboard The above layers work synchronously with each other. These systems communicate with each other with the powerful Restful API. Python, YoloV5, OpenCV technologies are used for image processing. SaaS applications are developed with Angular12. Node.js, Expressjs, MongoDB technologies are used on the backend. The architectural design of the project, the determination of the layers and the technologies to be used, and subsequent developments were made by us. For details and live use of the project, you can follow it at https://redlyst.ai

Face Recognition System

9868379
I have integrated 35 APIs on Coinbase Cryptocurrency Exchange. -Get all accounts for a profile -Get a single account's holds -Get a single account by id -Get a single account's ledger -Get a single account's transfers -Get all Coinbase wallets -Generate crypto address -Convert currency -Get a conversion -Get all known currencies -Get a currency -Deposit from Coinbase account -Deposit from payment method -Get all payment methods -Get all transfers -Get a single transfer -Withdraw to Coinbase account -Withdraw to crypto address -Get fee estimate for crypto withdrawal -Withdraw to payment method -Get fees -Get all fills -Get all orders -Cancel all orders -Create a new order -Get single order -Cancel an order -Get signed prices -Get all known trading pairs -Get single product -Get product book -Get product candles Get product stats Get product ticker Get product trades Get profiles Create a profile Transfer funds between profiles Get profile by id Rename a pro

Coinbase API Integration

I have integrated 35 APIs on Coinbase Cryptocurrency Exchange. -Get all accounts for a profile -Get a single account's holds -Get a single account by id -Get a single account's ledger -Get a single account's transfers -Get all Coinbase wallets -Generate crypto address -Convert currency -Get a conversion -Get all known currencies -Get a currency -Deposit from Coinbase account -Deposit from payment method -Get all payment methods -Get all transfers -Get a single transfer -Withdraw to Coinbase account -Withdraw to crypto address -Get fee estimate for crypto withdrawal -Withdraw to payment method -Get fees -Get all fills -Get all orders -Cancel all orders -Create a new order -Get single order -Cancel an order -Get signed prices -Get all known trading pairs -Get single product -Get product book -Get product candles Get product stats Get product ticker Get product trades Get profiles Create a profile Transfer funds between profiles Get profile by id Rename a pro

Coinbase API Integration

9062137
The view of the projects I have developed so far in the bitbucket account

Projects Developed

9031312
Python scripts and node.js applications running on Linux have been integrated in order to follow the processes such as monitoring, logging and removing the pillars in the background.

PM2 Integration

9027721
Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

10344142
We enable you to receive payments in your systems with Stripe, which is a worldwide valid and payment platform. We offer Stripe powerful payment methods and features. PAYMENTS - Payment - Checkout - Elements - Payment Links - Connect - Invoicing - Billing - Terminal FINANCIAL SERVICES - Corporate Card - Capital - Issuing - Treasury BUSINESS OPERATIONS - Radar - Data Pipeline - Sigma - Atlas - Climate - Tax - identity - Revenue Recognition - Financial Connections

Stripe for E-Commerce & All Payments

10015000
It enables the detection of unwanted persons in a closed area with the Face Recognition System and informing the managers with methods such as SMS, Push Notification, Alert. The Face Recognition Algorithm on the system has been developed completely for the project. Within the scope of the project, processes were optimized with Artificial Intelligence. There are 3 layers in the project; - Desktop App - SaaS User Dashboard - SaaS Admin Dashboard The above layers work synchronously with each other. These systems communicate with each other with the powerful Restful API. Python, YoloV5, OpenCV technologies are used for image processing. SaaS applications are developed with Angular12. Node.js, Expressjs, MongoDB technologies are used on the backend. The architectural design of the project, the determination of the layers and the technologies to be used, and subsequent developments were made by us. For details and live use of the project, you can follow it at https://redlyst.ai

Face Recognition System

9868379
I have integrated 35 APIs on Coinbase Cryptocurrency Exchange. -Get all accounts for a profile -Get a single account's holds -Get a single account by id -Get a single account's ledger -Get a single account's transfers -Get all Coinbase wallets -Generate crypto address -Convert currency -Get a conversion -Get all known currencies -Get a currency -Deposit from Coinbase account -Deposit from payment method -Get all payment methods -Get all transfers -Get a single transfer -Withdraw to Coinbase account -Withdraw to crypto address -Get fee estimate for crypto withdrawal -Withdraw to payment method -Get fees -Get all fills -Get all orders -Cancel all orders -Create a new order -Get single order -Cancel an order -Get signed prices -Get all known trading pairs -Get single product -Get product book -Get product candles Get product stats Get product ticker Get product trades Get profiles Create a profile Transfer funds between profiles Get profile by id Rename a pro

Coinbase API Integration

I have integrated 35 APIs on Coinbase Cryptocurrency Exchange. -Get all accounts for a profile -Get a single account's holds -Get a single account by id -Get a single account's ledger -Get a single account's transfers -Get all Coinbase wallets -Generate crypto address -Convert currency -Get a conversion -Get all known currencies -Get a currency -Deposit from Coinbase account -Deposit from payment method -Get all payment methods -Get all transfers -Get a single transfer -Withdraw to Coinbase account -Withdraw to crypto address -Get fee estimate for crypto withdrawal -Withdraw to payment method -Get fees -Get all fills -Get all orders -Cancel all orders -Create a new order -Get single order -Cancel an order -Get signed prices -Get all known trading pairs -Get single product -Get product book -Get product candles Get product stats Get product ticker Get product trades Get profiles Create a profile Transfer funds between profiles Get profile by id Rename a pro

Coinbase API Integration

9062137
The view of the projects I have developed so far in the bitbucket account

Projects Developed

9031312
Python scripts and node.js applications running on Linux have been integrated in order to follow the processes such as monitoring, logging and removing the pillars in the background.

PM2 Integration

9027721
Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

Integration of online payment, cancellation, return, bin no query, card storage, transaction query functions with the API integration of Payment Gateway companies. Integration with Node.js. Restful and SOAP services are all used.

Payment Gateway API Integration

4.9 · 13 Reviews
Reviews
D

Modbus to MQTT Sparkplug-B (archived) • $1,000 SGD

This guys/company didn't commit to the promise and dragging project longer by saying they understand the project scope wrongly and bla bla bla.

Former Client (inactive)

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A

Expert Full Stack Developer • $3,000 USD

Very very poor communication as he doesn't understand English at all. He wasted 2-months straightforward with ZERO output. Also demanded advance payment even before he started the work We've no idea what he's actually capable of doing. This was our first hire in this platform and our worst decision in choosing this freelancer. Highly not recommended !

Former Client (inactive)

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Project Manager • $1,010 USD

"Fatih went above and beyond on this project - like always. In the past, my company has tried many outside resources for projects similar to this but the reason we keep utilizing Fatih is his work ethic and his quality of work and would highly recommend him"

Jahidul I.

@soft4solution

•

Flag of

Dhaka, Bangladesh

•

3 years ago

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User Avatar

Google Extension APIs Developer • $1,300 USD

"I have been working with Fatih for years and he does an excellent job every time. He has a keen attention for detail and always completes the job on time with high quality. I look forward to working with Fatih again and would highly recommend him to anyone looking for someone with a strong work ethic, great communication skills, and is motivated to get the job done right. Thanks for your hard work and commitment, Fatih"

Jahidul I.

@soft4solution

•

Flag of

Dhaka, Bangladesh

•

3 years ago

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S

Software programming, Facial Recognition, Web managed... • $12,000 USD

Great work! Great communication! Smart team! Will definately work with again!

Former Client (inactive)

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Experience

Chief Technical Officer / Founder

Jan, 2018 - Apr, 2021

•

3 years, 2 months

Evend Vending Tech.

Jan, 2018 - Apr, 2021

•

3 years, 2 months

Embedded systems, Backend, Mobile application software processes are managed and everything is built from scratch, and it is a very good and precious 4-year project. - Python, Node.js, Socket.io, MongoDB, Android, Swift etc. - POS System / Virtual POS Integration - Telemetry System Hardware and Software - IoT

Jan, 2018 - Apr, 2021

•

3 years, 2 months

ABAP Developer

May, 2017 - Dec, 2017

•

7 months

İBB İstaç A.Ş.

May, 2017 - Dec, 2017

•

7 months

SAP ABAP Developer

May, 2017 - Dec, 2017

•

7 months

Education

Karabuk University

2019 - 2021

•

2 years

Master

Flag of

Turkey

2019 - 2021

•

2 years

Karabuk University

2011 - 2016

•

5 years

Computer Engineering

Flag of

Turkey

2011 - 2016

•

5 years

Certifications

P

Preferred Freelancer Program SLA

US English - Level 2

US English

US English - Level 1

US English

US English - Level 3

US English

Freelancer logo US (International) / English
Help & Support

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