Open to opportunities

Aytuğ Ulış

@aytuul

Senior software developer delivering backend, cloud-native, payment, and full-stack products for high-traffic platforms.

Turkey

Message

What I'm looking for

I’m looking for a backend-focused, cloud-native team where I can own architecture and payment/order systems, improve reliability and performance, and build scalable APIs that support high-traffic products with strong engineering standards.

I’m a Senior Software Developer with 5+ years building backend-focused, cloud native, and full-stack software products across ecommerce, marketplace, payment, chatbot, NFT, and digital product platforms. I focus on scalable APIs, payment systems, and reliable production services where performance and stability matter.

In my recent work, I develop and optimize backend services for large-scale ecommerce and marketplace platforms using Node.js, TypeScript, AWS Lambda, DynamoDB, PostgreSQL, Redis, and Elasticsearch. I’ve also taken strong ownership of backend architecture, database design, API standards, code standards, and production reliability.

I’ve built critical payment and order/billing flows with an emphasis on secure handling, error management, and dependable operations. I also support ERP integrations and backoffice/web/mobile API development, including authentication, order management, billing, and operational synchronization.

I work comfortably across microservices, serverless, monolithic, and monorepo architectures, delivering REST APIs for multiple client types (web, mobile, backoffice, and integration partners). I’m known for quickly understanding complex systems, identifying problems early, learning new technologies fast, and mentoring through code reviews and technical discussions.

Experience

Work history, roles, and key accomplishments

Backend Developer

Retter

Jul 2023 - Jun 2026 (2 years 11 months)

Worked on large-scale ecommerce and marketplace backend systems, including payment infrastructure, cloud-native services, ERP integrations, and web/mobile-facing APIs. Built scalable backend services for high-traffic platforms and implemented secure, reliable payment flows while contributing to architecture, database design, and API/code standards.

Fullstack Developer

Finartz

Oct 2022 - Jul 2023 (9 months)

Developed backend and frontend features for an NFT and digital product platform, including blockchain-related integrations and digital payment flows. Delivered services in a microservice-based architecture and contributed to testing, code reviews, and technical discussions.

TypeScript React Next.js PostgreSQL MongoDB Redis RabbitMQ Google Cloud Microservices Digital Payments Payment Flow Architectures Blockchain Integrations NFT Purchase Flows Pinata Testing Code Review

Fullstack Developer

MindBehind

Nov 2021 - Oct 2022 (11 months)

Contributed to enterprise chatbot development by building custom chatbot designs, integrations, and backend services for major brands. Developed enterprise chatbot frontend and backend features focused on reliability, security, and delivery in high-traffic environments.

Chatbot Development Backend Development Frontend Development Build Integrations Reliability Security High Traffic Systems

Back End Developer

De Marke Labs

Jan 2021 - Nov 2021 (10 months)

Developed backend services for ecommerce projects, subscription-based streaming platforms, and game-machine applications across multiple products. Owned backend development for multiple projects and built payment and subscription payment flows for different business models.

Backend Development ECommerce Platforms Subscriptions