Seyf Orhan

Seyf Orhan

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Senior Software Engineer | AWS Certified Solutions Architect
Bucharest, Romania
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Résumé

Jobs verified_user 0% verified
  • NIX
    Senior Software Engineer
    NIX
    Jan 2026 - Current (10 months)
  • Procter Gamble
    Senior Software Engineer
    Procter Gamble
    Aug 2025 - Jan 2026 (6 months)
    • Spearheaded the migration of a legacy monolith into four GCP-based microservices using Spanner and FastAPI, reducing deployment time from 3 days to 5 minutes • Refactored production services, cutting P99 latency 20x by eliminating O(N) operations and redesigning Spanner transactions • Led the API design and release cycles with backend and frontend teams to ship new features
  • Spate
    Data & Backend Software Engineer II
    Spate
    Mar 2025 - Aug 2025 (6 months)
    • Built and maintained production ETL pipelines serving enterprise clients under strict SLAs • Designed and shipped infrastructure on GCP, reducing test cycles by 16x and cost by ~1000x • Led the migration of legacy monolithic codebase from Python 3.8 to 3.12, improving performance and maintainability • Implemented CI/CD pipelines and led code reviews
  • Studyportals
    Software Engineer II
    Studyportals
    Oct 2024 - Mar 2025 (6 months)
    • Architected and deployed scalable ETL pipelines using Python to ingest, process, and analyze over 500,000 web pages daily • Designed a scalable, distributed, and cost-efficient architecture leveraging AWS Spot Fleet, SQS, EC2 and S3 for parallelized data retrieval and storage • Developed a multi-threaded NLP pipeline featuring a binary classifier that leverages log probability scoring and keyword filtering, achieving 96% accuracy in reliable information processing • Built a custom RAG system, chunking webpages and using keyword filtering & embeddings to extract obscured or hidden information, enhancing LLM-powered analysis • Fine-tuned and tested the latest HuggingFace transformers using QLoRA for data extraction and augmentation
  • Studyportals
    Software Engineer
    Studyportals
    Jan 2024 - Oct 2024 (10 months)
  • freelance
    Software Engineer
    freelance
    Aug 2022 - Jan 2024 (1 year 6 months)
    • Developed automation pipelines using Python for tracking and analyzing data from e-commerce & real estate domains • Deployed monolithic full-stack web apps on AWS using Python, Flask, and Bootstrap with CI/CD • Transformed raw data (Extraction, Cleaning, EDA, ML) into insights and predictions for clients
  • Roketsan Missiles Inc
    Senior Year Project Engineer
    Roketsan Missiles Inc
    Sep 2019 - Jun 2020 (10 months)
    Project: Design of a Four Way Cold Gas Thruster System Four way cold gas thruster design according to design restrictions specified by the company. Conducted patent analysis and research on cold gas thrusters and valve systems. Designed novel valve systems and modelled them using SOLIDWORKS Conducted CFD analysis using FLUENT (Mesh Independence, Comparing results with analytical functions, User Defined Functions and simulation of Real Gas) Transient Analysis (Numerical Solution of PDE's) and finding the optimal nozzle dimensions using MATLAB. Periodic report writing and communication experience in a multi-national team.
  • C
    Research Internship
    Corlam Labs
    Jul 2019 - Aug 2019 (2 months)
    Designed parts for novel biomedical devices using SolidWorks. Manufactured parts using 3D printers. Fluid path optimization conducted on serum tubes to minimize pressure loss.
  • Bilkent University
    Teaching Assistant
    Bilkent University
    Feb 2019 - Current (7 years 9 months)
    PHYS102 Grader Grading student quizzes and entering the grades in the University Portal
  • Bilkent University
    Teaching Assistant
    Bilkent University
    Feb 2019 - May 2019 (4 months)
    PHYS102 Grader Grading student quizzes and entering the grades in the University Portal
  • EMEK BORU MAKİNA SANAYİ VE TİCARET AŞ
    Mechanical Engineering Intern
    EMEK BORU MAKİNA SANAYİ VE TİCARET AŞ
    Aug 2018 - Sep 2018 (2 months)
    Gained experience in spiral welded pipe manufacturing processes as well as various types of welding and CNC machining processes. Modelled machine elements and equipment using SolidWorks.
  • Bilkent University
    Undergraduate Researcher
    Bilkent University
    Jan 2017 - Current (9 years 10 months)
    Member of the Microfluidics and Lab on a Chip Research Group (MLRG) https://github.com/s-orhan/Research-BEM
  • Bilkent University
    Undergraduate Researcher
    Bilkent University
    Jan 2017 - Sep 2019 (2 years 9 months)
    Member of the Microfluidics and Lab on a Chip Research Group (MLRG) https://github.com/s-orhan/Research-BEM
Education verified_user 0% verified
  • Bilkent Üniversitesi
    Bachelor of Science - BS, Mechanical Engineering
    Bilkent Üniversitesi
    Jan 2015 - Dec 2020 (6 years)
    Comprehensive Scholarship (100%)
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