Barkin Buyuksagin

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🚀 About Me

A backend software engineer with full-stack capabilities and 6+ years of experience building scalable web-based solutions, deep expertise in Javascript ecosystem, and more...

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My Tech Stack

Technologies and tools I use to ship products

Programming Languages

TypeScriptJavaGo

Frontend

ReactNext.jsReduxJestStorybookTailwind CSS

Backend

Node.jsFastifyExpress.jsNestJSBunSpring BootKafkaSocket.io

Databases

MongoDBPostgreSQLRedisBigQueryUpstash Vector

Cloud & DevOps

AWSGCPKubernetesDockerTerraformGrafanaOpenTelemetry

AI

LangChainOpenRouterCursorHugging Face

My Journey

The path of building, scaling...

Backend Software Engineer

Getir

August 2023 - June 2025
  • Maintained and developed event-driven backend microservices (Node.js, Java, Go) on AWS for a large-scale e-commerce platform.
  • Integrated Google Vertex AI Search for commerce to improve product search relevance and accuracy.
  • Built a batch data pipeline using BigQuery, Cloud Scheduler, and Workflows for periodic data ingestion.
  • Developed BFF services to control mobile app pages from the backend, reducing the need for frequent app releases.

Frontend Software Engineer

Getir

January 2023 - August 2023
  • Helped build web and admin apps using React and Nx for a large e-commerce platform.
  • Refactored untestable parts of a Next.js app and added tests to improve test coverage and reliability.
  • Built a flexible, reusable component library in React to speed up UI development.

Full-stack Software Engineer

Bilisim Inc.

June 2021 - January 2023
  • Built and maintained React apps of an HR management SaaS used by employees and admins.
  • Extracted replicated React components (buttons, inputs, etc.) into reusable libraries shared across teams.
  • Increased the accessibility of internal UI tools by simplifying their APIs and adding examples.
  • Reduced unnecessary backend requests by adding client-side caching for common data.
  • Contributed to backend to maintain momentum on frontend feature development when needed.

Full-stack Software Engineer

Cubicl

June 2019 - June 2021
  • Built the frontend of a JIRA-alternative, user-friendly task management SaaS in collaboration with UI/UX designers.
  • Developed REST APIs, background jobs, and database logic using NestJS for core app features.
  • Integrated external services like SMS gateways, Google Drive, and email (SMTP/IMAP).
  • Replaced a 3rd-party SaaS dependency by building a custom push server with Socket.io.

Reach out!

Ready to explore collaboration opportunities or discuss your next software ideas?