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I am a Full Stack Developer with 3+ years of experience building scalable web applications and payment infrastructure. I independently architect and ship production SaaS products, including payment processing, subscription billing, and e-commerce integrations. I have a strong background in .NET Core, React, microservices, and event-driven architectures, and I enjoy delivering end-to-end solutions from backend services to user interfaces, including OAuth, PCI-compliant payment flows, and Shopify integrations.…I am a Full Stack Developer with 3+ years of experience building scalable web applications and payment infrastructure. I independently architect and ship production SaaS products, including payment processing, subscription billing, and e-commerce integrations. I have a strong background in .NET Core, React, microservices, and event-driven architectures, and I enjoy delivering end-to-end solutions from backend services to user interfaces, including OAuth, PCI-compliant payment flows, and Shopify integrations.

Sabit Can Caglar

Full Stack Developer, Web Developer, Back-End Developer, +3

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I am a Full Stack Developer with 3+ years of experience building scalable web applications and payment infrastructure. I independently architect and ship production SaaS products, including payment processing, subscription billing, and e-commerce integrations. I have a strong background in .NET Core, React, microservices, and event-driven architectures, and I enjoy delivering end-to-end solutions from backend services to user interfaces, including OAuth, PCI-compliant payment flows, and Shopify integrations.…I am a Full Stack Developer with 3+ years of experience building scalable web applications and payment infrastructure. I independently architect and ship production SaaS products, including payment processing, subscription billing, and e-commerce integrations. I have a strong background in .NET Core, React, microservices, and event-driven architectures, and I enjoy delivering end-to-end solutions from backend services to user interfaces, including OAuth, PCI-compliant payment flows, and Shopify integrations.

Available to hire

I am a Full Stack Developer with 3+ years of experience building scalable web applications and payment infrastructure. I independently architect and ship production SaaS products, including payment processing, subscription billing, and e-commerce integrations.

I have a strong background in .NET Core, React, microservices, and event-driven architectures, and I enjoy delivering end-to-end solutions from backend services to user interfaces, including OAuth, PCI-compliant payment flows, and Shopify integrations.

Skills

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Expert

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Intermediate

Work Experience

Full Stack Developer (Solo) at Cognify

January 1, 2025 - Present

Architected and shipped a production SaaS platform independently, handling payment processing, subscription management, Shopify app integration, outreach automation, and AI-powered features. Built a payment gateway abstraction using the Strategy pattern (IPaymentGateway) with Stripe flows (authorization, capture, refund, void, payment intents) and connected account platform fees. Deployed with PostgreSQL, Hangfire for background jobs, CI/CD via GitHub Actions, and structured logging with Serilog + Grafana/Loki.

Software Engineer at Directful.com

January 1, 2023 - December 1, 2024

Collaborated with cross-functional teams to design and deliver scalable backend services for a high-traffic platform. Developed an internal load testing tool to identify performance bottlenecks before production deployments. Built an asynchronous web application for content creation and worked closely with frontend developers to ensure seamless end-to-end functionality. Diagnosed and resolved complex system issues to deliver performance optimizations across services.

Full Stack Developer at Glossy Software A.S.

December 1, 2021 - January 1, 2023

Optimized Entity Framework Core queries for a dataset of 220K+ records, significantly reducing response times. Migrated a legacy .NET Framework application to .NET 6 using Upgrade Assistant. Integrated Descartes Web API for logistics and built REST API integrations for Billing and Accounting modules. Implemented Hangfire for background jobs and real-time updates using SignalR. Built new UI features with React and designed a customer portal interface from scratch. Maintained code quality across multiple repositories through PR reviews and pair programming.

Business Analyst at Prestij Yazılım

December 1, 2020 - December 1, 2021

Analyzed requirements and designed workflows for hospital management software serving multiple healthcare facilities. Wrote and optimized complex SQL queries on large-scale healthcare datasets using BigQuery and SQL Server for reporting and data analysis. Collaborated with development teams to translate business requirements into technical specifications and ensure accurate implementation. Identified and resolved data inconsistencies across hospital modules, improving overall system reliability.