Stefan Nachev
Conversational AI Chatbot Developer
San Jose, California, United States
Summary
🤩
Rockstar🎓
Top SchoolStefan Nachev is a Conversational AI Chatbot Developer with 16 years of experience building enterprise-grade, omnichannel virtual assistants and backend integrations from San Jose, CA. He designs and optimizes IBM Watson and AWS Bedrock–powered bots that scale to process thousands of claims and payment transactions while improving containment and reducing live-agent transfers. Comfortable across the full stack, Stefan pairs conversational design (intents, entities, SSML, STT/TTS tuning) with API design and cloud engineering—authoring REST APIs and integrating serverless and data services for robust automation. His background includes improving CI/CD and mobile tooling in well-known open-source projects like fastlane, where he focused on logging, modularization and security-sensitive refactors. A former enterprise systems manager and SQL specialist, he brings strong operational rigor, metrics-driven analytics, and security-conscious engineering to fast-paced deployments. He’s equally at home refining developer tools and crafting human-centric voice experiences, a blend that helps reduce friction between product, engineering, and business goals.
16 years of coding experience
20 years of employment as a software developer
Bachelor of Science (B.S.), Business Administration and Management, MIS, 3.65, Bachelor of Science (B.S.), Business Administration and Management, MIS, 3.65 at University of Bridgeport
Bulgarian, English
Github Skills (21)
editors10
git10
ios10
jquery10
bootstrap10
testing10
css10
ui-design10
editor10
cicd10
ruby10
uid10
front-end-development10
openssl10
logging10
Programming languages (14)
Github contributions (5)
fastlane/ci
Feb 2018 - Aug 2018
Open source, self hosted, mobile optimized CI powered by fastlane
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:52 commits, 55 PRs, 115 pushes in 5 months
Contributions summary:Stefan primarily focused on refactoring the logging system to utilize idiomatic Ruby log levels, ensuring consistent string styles, and modifying environment variables to control log verbosity. They also made updates to the git repository handling code, including adding detailed logging statements for various git actions. Further contributions involved moving submodule projects into vendored gems and migrating controllers to use APIController. These actions demonstrate the user's efforts to improve logging, modularization, and overall maintainability of the CI/CD system.
fastlanehosteddockermobile-optimizedoptimized
fastlane/fastlane
Apr 2015 - Jun 2022
🚀 The easiest way to automate building and releasing your iOS and Android apps
Role in this project:Backend Developer & iOS Mobile Developer
Backend Developer & iOS Mobile DeveloperContributions:1 release, 18 reviews, 127 commits in 7 years 3 months
Contributions summary:Stefan's commits focused on improving the internal workings of the `PEM` library, which is used for provisioning and managing iOS certificates within the `fastlane` ecosystem. They migrated code to use OpenSSL for cryptographic operations, enhancing security. The user refactored the certificate handling code, separating concerns into distinct methods and adding automated tests. These changes directly contribute to enhancing the reliability and maintainability of the tools for iOS app development.
fastlaneandroid-appsappsdeploymentreact-native
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