Doruk Gurleyen
Senior Software Engineer at BILL
Philadelphia, Pennsylvania, United States
Summary
👤
Senior🎓
Top SchoolDoruk Gurleyen is a senior software engineer in Philadelphia with six years of experience building resilient, cloud-native systems and improving user-facing flows. At BILL he drives measurable product impact—doubling auto-approval rates year-over-year and halving credit application completion time—by combining Elixir back-end engineering, React front-ends, and automation for ID verification. He champions Federated GraphQL and maintains the Absinthe Federation open-source library, accelerating microservice API development across teams. Doruk also architects async integrations with Kafka, authors RFCs to raise engineering standards, and has a history of shipping secure infrastructure (HashiCorp Vault encryption libraries) and high-throughput services. His background in hospitality operations and training informs a customer-first, process-oriented approach to tooling and onboarding. Beyond coding, he mentors engineers and has a track record of turning complex compliance and onboarding problems into scalable, automated solutions.
6 years of coding experience
5 years of employment as a software developer
Course, Leading for Creativity and Innovation, Course, Leading for Creativity and Innovation at eCornellSoftware Engineering Immersive, Software Engineering Immersive at Hack ReactorBachelor of Arts (BA), Faculty of Business, Tourism Administration, Bachelor of Arts (BA), Faculty of Business, Tourism Administration at Dokuz Eylul UniversityErasmus Student Exchange Program, Tourism / Hospitality, 3.71 / 4.00, Erasmus Student Exchange Program, Tourism / Hospitality, 3.71 / 4.00 at Kodolányi János University
Turkish, English
Stackoverflow
51reputation
6kreached
3answers
0questions
Github Skills (78)
graphiql10
apollo-client10
relay10
api10
elixir10
absinthe10
http-status10
graphql10
apollo9
apollo-federation9
apollo-link9
rfc9
ietf8
spec8
gateway8
Programming languages (8)
Github contributions (5)
HRR47-FEC-Burke/similar-listings-and-news
Aug 2020 - Dec 2020
A module that shows similar listings and related news on a product page
Contributions:1 review, 73 PRs, 95 pushes in 4 months
newslistingssimilarproduct-page
kzlsakal/advent-solutions
Dec 2020 - Dec 2023
Contributions:73 pushes, 2 branches in 3 years
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.