Umut Şentürk — Backend Developer & Software Engineer

Backend developer and software engineer based in Edirne, Turkey, specializing in Python (Django, FastAPI), Node.js, payment and shipment integrations, and scalable e-commerce backends that process millions of orders per month. Currently Backend Developer at Akinon. Previously at Boranka and Wiseback, plus 150+ freelance projects for international clients.

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Profile, Skills & Contact — Umut Şentürk

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  • umut@senturk
  • ------------
  • OS: Yes, that distro btw.
  • Kernel: Kırklareli University v2022-lts
  • Packages: Software Engineer (backend)
  • Resolution: 2020xCURRENT
  • Uptime: 6 years
  • Shell: Edirne/TURKEY
  • CPU: Python (Django, FastAPI), NodeJS (Express.JS)
  • GPU #0: Javascript, HTML, CSS, React, Solid.JS
  • Memory: PostgreSQL, MySQL, MongoDB
  • WM: AWS, GCP
  • WM Theme: EC2, S3, RDS, Translation, GDrive, Gmail, Docs
  • Terminal: GNU/Linux
  • Terminal Font: Arch based, Debian based, Red Hat based
  • Theme: Git Version Control
  • DE: Turkish (native), English
  • Icons: LinkedIn, GitHub,

Akinon — Backend Developer (February 2024 – Present)

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  • Backend Developer (February 2024 - CURRENT)
  • ---------------------------------------------
  • 3rd Party Integration
  • Payment Integrations: Built and maintained Django-based SOAP/REST integrations with MPGS (incl. Apple Pay), Cybersource (Authorize.Net), Unicredit, PayU, Masterpass, Moka, Mobilexpress (Lidio), Craftgate, NKolay and Netopia (Bitcoin).
  • Supported diverse payment methods: Apple Pay, Credit Cards, Masterpass Wallet, Hosted Payment Pages (Redirection), Funds Transfer and Cryptocurrency Payments.
  • Shipment Integrations: Built and maintained Django-based SOAP/REST integrations with Sky Express, Carriyo and FarEye, handling order creation, tracking and webhook callbacks at high scale.
  • Analysis & Documentation: Conducted deep pre-integration analysis and authored installation guides used by engineering and partner teams.
  • Microservices & Extensibility: Designed some provider integrations as independent extensions/microservices, enabling modular deployments and easier maintenance.
  • Event-Driven & Async Processing: Implemented webhook/IPN handling for instant payment/shipment notifications, used Celery for asynchronous task processing and reliability under high load.
  • Testing & Quality: Wrote comprehensive test suites (unit, integration, regression) even across other teams' scope, ensuring consistent quality and reducing production issues.
  • Scale & Reliability: Engineered flows resilient enough to process millions of e-commerce orders per month, implementing idempotency, retries, timeouts and compensation logic to ensure high transaction success rates.
  • Team Contribution & Leadership: Supported teammates with problem-solving and mentoring; acted as interim team lead during leader's absence, coordinating work and delivery.
  • Performance: Consistently achieved 140%+ of performance KPIs, accelerating project delivery and improving partner satisfaction.
  • International Collaboration: Worked with global stakeholders across Europe and MENA, adapting integrations to local payment, compliance and logistics standards.

Boranka — Backend Developer (March 2023 – February 2024)

[umut@senturk ~]$ biofetch boranka

  • Backend Developer (March 2023 - February 2024)
  • ----------------------------------------
  • BAF, PetekB2B, PetekCRM, Mergen
  • Authentication & Security: Partnered with the CTO to design a Google-like API versioning and scope-based system, ensuring accurate user authentication and authorization per module. Built a custom JWT solution to enhance flexibility and security.
  • Product Development: Contributed to Boranka Application Framework (BAF) and core modules of PETEKB2B (dealer/sales management), PETEKCRM (customer relationship management) and MERGEN (international shipment management) improving operational efficiency for enterprise clients.
  • Data Integrity & Reliability: Optimized PostgreSQL queries and schema migrations, applied transactional safeguards (all-or-nothing updates, ACID) to maintain high data consistency during complex operations.
  • API & Integrations: Delivered scalable REST APIs and backend services, enabling seamless interaction between internal systems and external front-ends.
  • Frontend Enhancements: Extended Django with SASS and SolidJS (TypeScript) to improve UX:
    • pop-up modals for customer emails
    • auto-filled relational fields
    • tax/price/total auto-calculation
    • searchable dropdowns
    • drag-and-drop file uploads
  • Mentorship & Collaboration: Helped onboard new developers, guiding them through Boranka's complex framework and supporting them when blocked, reducing ramp-up time and improving team productivity.

PopularPicks.co — Freelance Project (Email Newsletter System)

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  • PopularPicks.co (Freelance-shelved by customer)
  • ---------------------------------------------
  • Email Newsletter System for the Most Popular News
  • Infrastructure & Setup: Installed and maintained a Linux server, deploying services and scheduling tasks with cronjobs for automated daily and weekly operations.
  • Email & Data Processing: Integrated Gmail API (GCP) to fetch emails, implemented a Python BeautifulSoup4 parser to extract URLs and stored results in MySQL for structured data management.
  • User Interface: Built an administrative panel to monitor and manage fetched data, providing visibility and control for the client.
  • 3rd-Party Integrations:
    • Integrated APIs to calculate URL popularity metrics, enriching stored data.
    • Implemented SendGrid API for email delivery and mailing campaigns.
    • Added SparkLoop API to enable a referral system and track user engagement.
  • Automation & Reliability: Designed fully automated workflows combining scheduled jobs, data parsing and notification systems to reduce manual intervention.

Freelancer — Backend & Automation Developer (December 2020 – March 2023)

[umut@senturk ~]$ biofetch freelancer

  • Freelancer (December 2020 - March 2023)
  • ---------------------------------------
  • Delivered 150+ successful projects for international clients (US, EU, MENA, Asia), consistently maintaining a 5 stars rating.
  • Web scraping & automation: Built robust scripts with Selenium and BeautifulSoup4 to extract and process data from platforms like Amazon, Twitter, Google, Maps, Facebook, etc.
    • Implemented anti-bot strategies and CAPTCHA solving where necessary, while always respecting robots.txt and platform policies.
    • Automated complex workflows such as product purchasing (Clinique), eBay bidding, file downloading, saving clients significant manual effort.
  • API & backend development: Designed and deployed APIs using Node.js (Express) and Python (FastAPI) to support integrations and data pipelines.
  • Content & document automation:
    • Created Python scripts to generate and publish WordPress posts, reducing manual publishing time.
    • Built automation for PDF, Word, Excel and CSV files to generate new documents, bulk-update records or extract structured data.
  • Server administration: Installed and maintained Linux servers, ensuring stable environments and automated workflows with cronjobs.
  • Productivity tooling: Developed a freelancer auto-bidder tool to improve efficiency in client acquisition and project management.

Wiseback — Backend Developer Intern (July 2021 – November 2021)

[umut@senturk ~]$ biofetch wiseback

  • Intern (July 2021 - November 2021)
  • ----------------------------------
  • Web Scraping System
  • Web scraping & automation: Built Python scripts using Selenium and BeautifulSoup4 to collect and process data from web sources.
  • API development: Created a backend service with FastAPI to manage scraping scripts and expose processed data.
  • Security & authentication: Implemented JWT-based authentication and authorization, ensuring secure access to API endpoints.
  • Database modelling: Designed and added new PostgreSQL models and schemas, supporting scalable data storage and retrieval.

Kırklareli University — Computer/Software Engineering (2016 – 2022)

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  • Student (2016 - 2022)
  • ---------------------
  • Student Affairs Information System, Kırklareli University (Final Year Project)
  • Team project: Collaborated in a 10-person team to build a web-based Student Affairs Information System for the Turkish Language Application and Research Center.
  • Backend development: Implemented exam and grade management pages with full CRUD functionality, streamlining academic record handling.
  • Database integration: Built a feature to import student data directly from the university's database using national ID numbers, reducing manual entry and errors.
  • Technology: Developed with PHP and SQL, applying structured coding practices and version control in a collaborative academic environment.

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