# Efkan T. > Independent Consultant & Lead Software Engineer | Development, Mobile App, AI Location: San Francisco Bay Area, United States Profile: https://flows.cv/efkan Senior Software Engineer & Team Lead with 10+ years of experience, including work in Fortune 500 environments, delivering scalable web, mobile, and cloud solutions. Skilled in leading cross-functional teams and driving full lifecycle software projects from concept to deployment. Passionate about system design, AWS cloud architecture, and clean, maintainable code. Strong technical leadership with hands-on expertise in React, Node.js, Azure, and AWS services. Environmentalist and technology enthusiast. Interested in AI and IoT. ## Work Experience ### Independent Consultant & Hush @ Efkan Works Jan 2025 – Present | Dublin, CA Established an independent consultancy focused on transitioning traditional software workflows to AI-First architectures. Operating under the brand "Efkan Works" to design, build, and deploy cloud-native mobile solutions. • Production-Grade App Development: Architecting and deploying cross-platform mobile apps (e.g., Hush) to App Store & Google Play. Expert implementation of RevenueCat for hybrid monetization models and robust CI/CD pipelines. • Engineered an "Offline-First" AI architecture: Developed a React Native (CLI) baby monitor app utilizing on-device machine learning (TensorFlow Lite) for zero-latency, privacy-compliant smart cry detection without cloud audio processing. • Architected a serverless multi-parent pairing system: Built an anonymous, cross-device pairing architecture using Firebase (Anonymous Auth, Firestore, Cloud Functions), enabling sub-second FCM push notifications without requiring mandatory user accounts. • Led full-cycle product development: Managed the entire lifecycle from UI/UX design (implementing a dark-mode, melatonin-safe color system) to RevenueCat subscription integration and automated CI/CD deployment via Fastlane. • Developing agentic workflows utilizing Claude Code and Antigravity to automate coding tasks and improve developer velocity. ### Team Lead Software Engineer @ Monster Notebook Jan 2022 – Jan 2025 | Istanbul, Turkey As a Team Lead Engineer, I oversaw the development of several key applications, including a mobile e-commerce app, a support platform, a survey application, and the Monster Ambassador Program application. Furthermore, I contributed to the development of a front-end control center application for Monster Notebook customers, enabling them to access hardware features. Additionally, I spearheaded the development of an AI Chatbot application, although its product was subsequently suspended due to the rapid advancements in AI technology. ### Team Lead Software Engineer @ amplicade Jan 2022 – Jan 2022 | Cologne, North Rhine-Westphalia, Germany Led a scrum team that is responsible for developing the Skulp app. ### Sr. Frontend Engineer @ Rementis Jan 2021 – Jan 2021 | San Jose, California, United States Worked on the project Metance.com (formerly a.k.a Vault) • Developed new features and maintained existing modules for a content management product. • Improved UI rendering performance by 35% in certain components. Also implemented virtualized lists and optimized React component lifecycles. ### Senior Software Engineer @ Arneca Technologies Jan 2019 – Jan 2020 | Istanbul, Turkey Engaged in diverse software development projects, tailored to meet the specific requirements of various domains, including finance and e-commerce. ### Senior Software Engineer @ GE Aviation Jan 2019 – Jan 2020 | Kocaeli, Turkey Worked as a senior full-stack JavaScript developer in a scrum team. The product's name worked on was OpsVision. It aims to give data visualization to provide info about the current and previous state of the machines in the facilities so that the facility can optimize the underperformed machines. Used mainly Node.js, Reactjs, and Amazon Web Services. ### Entrepreneur (In charged of development, architecture and DevOps) @ Self Employed Jan 2014 – Jan 2018 | İstanbul Developed a multilingual e-commerce application from scratch, including a web app for business partners, APIs, an Android app, and a landing page. Hosted on AWS, it utilized EC2, IAM, S3, Route53, SES, and WorkMail services. An additional Firewall server protected the system from DDoS attacks and malicious IP addresses. The mobile app, built with React-Native, has a multilingual UI, Google Maps, QR/Barcode scanning, content sharing on Twitter and Facebook, and various UI elements. Point of Interest (POI) requests from the API are displayed lightning fast, in milliseconds. SQLite serves as the database, and Redux is the state tree. Native modules were created and modified to enhance the app's functionality. A background service was developed for a persistent socket connection. Location services, Firebase-JobDispatcher, and Account Manager were used as Android services. A responsive web application, using OAuth client credentials, was developed for business partners. Twitter Bootstrap provided the UI, EJS rendered static pages, Morgan handled logging, SOAP processed e-invoicing, AWS SDK stored invoices on S3, Nodemailer sent invoices, socket.io and Redis cached and optimized performance, and MongoDB served as the primary database. An admin console provided a system overview, enabling automatic e-invoicing. Rigorous testing ensured money-related operations. A horizontal-scalable two-layer caching mechanism was developed for API requests, offering high-performance message transmission and throughput. ### Software Development Specialist @ Kaptan Demir Çelik End. ve Tic. A.Ş. Jan 2011 – Jan 2013 | Istanbul, Turkey Kaptan is one of the industry’s leading companies in Turkey. Developed a financial module to track and manage the cash flow for a large fund. - Analyzed and developed a financial module using the JD Edwards EnterpriseOne platform, in accordance with banking and accounting regulations. - An existing in-house developed financial application was updated according to new requirements using C#, DevExpress and SQL Server. - Developed a SSH tool for the Financial Department to upload bank instructions to the banks work with. C# was used. - Developed a general purpose desktop application. Applied OOP and multi-tier architecture that provided authentication solutions-private data encoding and improved custom controls such as Toolbar, Data Grid, Textboxes and Smart Forms. Provided standardization in the application. This rapid application development tool was developed using C#. ### Sales Systems Analyst Developer @ Eti Jan 2010 – Jan 2011 | Istanbul, Turkey Eti is one of the industry’s leading companies in Turkey. Member of a developer team responsible for producing new software packages used to track sales commissions of field staff and their managers. - Developed an application that determined monthly sales goals using data from an existing sales automation system. - Supported an existing sales and premium application that developed ASP (MVC), C#, ExtJS. - An existing DWH-SSAS OLAP cube updated according to new requirements. - Developed a new report and some existing reports-SSRS were updated. ### Software Developer @ Dinateks A.Ş. Jan 2009 – Jan 2010 | Tekirdag, Turkey A manufacturing company that works with world’s most famous clothing brands. - Added new features to an existing manufacturing application which developed using ASP, C# and SQL Server. - Developed a demand management application for the material planning department. - Developed an outsourced manufacturing management software. - Managed the IT team after 2009. ## Education ### Bachelor of Science (BS) in Computer Engineer Ahmet Yesevi Üniversitesi Jan 2005 – Jan 2011 ### Bachelor of Business Administration (BBA) in Administrator of Business Anadolu University Jan 2004 – Jan 2007 ## Contact & Social - LinkedIn: https://linkedin.com/in/efkan - GitHub: https://github.com/efkan --- Source: https://flows.cv/efkan JSON Resume: https://flows.cv/efkan/resume.json Last updated: 2026-03-20