Serhan Kiymaz Email & Phone Number

Luxembourg, Lu

Luxembourg, Lu

Luxembourg, Lu

• Managed 15 cross functional teams of 120+ engineers to deliver technical and business initiatives for high traffic camera streaming platform with 50M daily and 250K concurrent users• Achieved 2x faster hiring with re-structured hiring process and lead hiring activities of engineers• Reviewed and approved product designs and architecture, verifying compatibility with project principles and goals• Fostered positive working environment that encouraged innovation, collaboration and accountability and accomplished 20% higher employee NPS• Produced executive summaries and informative metrics for progress reports and presentations for senior leadershipStarted modernization projects to build sustainable and maintainable systems such as;• Migrated payment platform from monolith architecture to service oriented architecture• Merge of frontend codebases to a single responsive frontend with NextJS to burn less resource by 1/3• Pioneered refactoring of large APIs to simplify and distribute knowledge and responsibility between engineers• Solved critical problems with accounting system which has a significant impact on company revenue• Introduced new quality assurance and test automation strategy and test automation coverage increased from 20% to 56%

Istanbul, Tr

• Managed all engineering activities in company which runs 2 high traffic travel/hotel booking websites with development teams of 70 developers, QA engineers, 4 product teams of 25 employees, Devops and Techops teams• Coordinated third-party vendors and IT teams to seamlessly deliver effective solutions• Project leadership in technology-driven environment with focus on 4 different products• Completed and submitted monthly and yearly reports to support executive decision making

Istanbul, Tr

• Directed software engineering and product team's complex project development and functionality objectives for delivering massive replatforming of website and native applications of largest betting company of country• Delivered this large scale re-platforming project in 5 months to meet legal requirements to keep betting license• Initiated excessive hiring activity to grow engineering and IT infrastructure teams by 100%• Designed new software architecture with micro services and migration from monolith to new applications• Collaborated with third-party vendors (software, hardware, quality assurance consultants, auditors from central betting authority) to implement new system• Improved software program delivery performance and reliability• Briefed executives on technology risks and suggested ways to alleviate concerns about delivery of new system• Updated all server and network infrastructure for new micro service architecture

London, England, Gb

• Guided software engineering, infrastructure, technical support and product teams• Modernized existing machine learning core architecture of recommendation engine. Company increased customer base by 4x with new distributed core• Implementation of department KPIs and employee bonus system linked to KPIs• Completed and announced 2 new products for customers: Personalized email recommendation and push recommendation• Management of relationships with 3rd parties including cloud vendor, hardware vendors and investors• Decreased yearly budget by 30% by employee, cloud and software optimization

Bucuresti, -, Ro

elefant.ro is 2nd largest e-commerce company of Romania.• Implemented in-store purchasing project from pickup points which contributed company revenue by 20%• Improvements in warehouse systems performed 5 times better in Black Friday• Launched international site of company in Moldova with pickup point• Delivered cross-border supply chain project. Number of products on site increased by 10x• Collaborated with third-party vendors to succeed with critical campaigns and Black Friday• Completed and submitted monthly and yearly reports to senior management

Istanbul, Çatalca, Tr

- Developed and implemented technical application support and information technology policies and procedures that advanced investment needs, outcomes and performance measurements to balance continuous innovation with responsible risk-taking.- Fostered positive working environment that encouraged innovation, collaboration and accountability and managed end-user needs with functional and security responsibilities.- Deployed, monitored and maintained software releases and infrastructure- Performed regular audits and tests of infrastructure and applications.- Implemented, created and tested disaster recovery and business continuity plans and maintained appropriate back-up system.- Developed, tracked and controlled information technology operating budgets and cost and benefit analyses for IT spending initiatives.- Reviewed and assessed architecture design, implementation, testing and deployment needs to identify project requirements and costs.- Interviewed, hired and trained staff, leading performance reviews and offering constructive feedback.- Supported implementation of warehouse management system software applications to enable centralized management of tasks.- Worked closely with management teams to plan, develop and execute technical strategies aligned to company vision.- Delivered critical projects like redesign of mobile applications, One Click Checkout, Same day delivery- Launched offline stores

Istanbul, Çatalca, Tr

IT System & Infrastructure Manager of Markafoni Group (a part of Naspers) which is one of the biggest retail e-commerce sites in Turkey.- Management of system administration, network, enterprise systems, helpdesk teams- Managing PCI DSS reports and compatibility- Developing IT Operation procedures, standards- Managing IT vendor/outsource relationships and agreements- Management of audit processes- Management of IT budget- Responsible from 3rd Party contracts and agreements- Reporting to upper management board- Completed datacenter relocation, office relocation, offline store opening projects

Istanbul, Şişli, Tr

TVYO is one of the biggest VOD and live streaming platform in Turkey- Reviewed code to check compliance with company coding guidelines.- Led cross-functional teams of engineers, quality assurance engineers and Type designers in development of products and resolution of product defects.- Worked with developers to identify and remove software bugs.- Documented technical workflows and knowledge to educate newly hired employees.- Led sprint planning, reviews and retrospectives.- Inspected final products for application uptime, overall performance and ease of use.- Mentored junior developers and engineers through onboarding process and long-term team contributions.- Monitored development efforts to maintain high levels of quality control and reduce impact of unforeseen issues.- Collaborated with senior leadership to define requirements and build projects that achieved or exceeded corporate plans.

Istanbul, Turkey, Tr

- Resposible from 100+ internal/external portal applications- Technical coordination with 3rd parties- Identified issues, analyzed information and provided solutions to problems.- Participated in continuous improvement by generating suggestions, engaging in problem-solving activities to support teamwork.- Resolved problems, improved operations and provided exceptional service.- Increased customer satisfaction by resolving issues.- Proved successful working within tight deadlines and fast-paced atmosphere.- Improved operations through consistent hard work and dedication.

London, Gb

- L2 support for vodafone.com.tr, Online Self Service etc. - Web site monitoring (Nagios)- System administration (Linux)- Weblogic administration

Istanbul, Istanbul, Tr

- Developed server-side logic in Java- Defined and maintained databases to deliver responsiveness to data client requests.- Built flexible, reusable code and libraries for future use.- Resolved scalability problems and addressed security concerns.- Integrated front-end elements into applications.- Integrated third-party APIs from external applications into web platforms.

Ataşehir, Istanbul, Tr

Sahibinden.com is leading classifieds site of Turkey with more than 50M daily visitors.- Replatforming of site with service oriented architecture- Resolved architecture, design or verification problems - Provided input to team lead regarding areas for process and procedural improvement.- Wrote, reviewed and edited technical document in accordance with template requirements.- Participated in formal internal design reviews of proposed products and components.- Developed positive working relationships with stakeholders to effectively coordinate work activities.- Developed work plans for various personnel roles based on strengths and talents.

İstanbul, Tr

- Developed first MMS website MMS Yarat in Turkey for Shubuo (Turkcell) This product is also used by Ukraine Mobile Operator Life- Developed SMS services for Turkcell and Shubuo (SMS opt-in/opt-out services, Shubuo Gezeglen, Shubuo Boxer etc)- Developed bulk SMS application tool for Turkcell which was sending more than 5 million SMS daily. Turkcell used this tool for all bulk SMS transports until 2008- Development Genpa e-commerce site www.genpatech.com- First 3D Secure implementation in Turkey for Genpa e-commerce site- Wrote, reviewed and edited technical document in accordance with template requirements.- Participated in formal internal design reviews of proposed products and components.

Developed one of first open source projects in Turkey.DCP-Portal was one of kind content management system with an easy installation script and theme support.Some main feature were;- Content add/editing with WYSIWYG Html editor- Category management- Search engine- Member features like favorites, commenting, email notificaitons- Forum areaDCP-Portal reached 400K downloads globally and stayed in Top 10 PHP scripts on Hotscripts.com for more than 1 year.It built a community all over the world and helped Peron A.S to sign commercial contracts with customers like UNESCO.

Istanbul, Turkiye, Tr

• Re-designed, developed KocSistem website between 2000-2002• KocSistem intranet adminsitration

Tr

• Created first local portal of Turkey (BagdatCaddesi.net)• Created first local community of Turkey (ClubCadde.net)

Economics

Education record