Haci Sahin Email and Phone Number

With a wealth of expertise as a Cloud Principal, I've successfully led diverse projects encompassing architectural solutions for digital transformation, cloud adoption, and enterprise cloud footprint establishment. Specializing in cloud security design and implementation, I've fortified organizations against cyber threats. My proficiency extends to identity and access management, ensuring robust security frameworks. Leveraging my skills in infrastructure automation using IaC frameworks, I've streamlined cloud operations. As a seasoned professional with 5 expert certificates in Azure and 2 in AWS, I bring a strategic vision to every project. Open to advisory and consultancy roles, I thrive on guiding businesses toward optimal cloud solutions for sustained success.

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Providing consultancy on cloud solutions to Fortune 500 companies in terms of security, governance, migration, devops, cost management, high availability/disaster recovery and best practices.

A member of Solution Architecture team within the Cloud Center of Excellence. Team is responsible for defining, implementing & maintaining best-in-class security services, and making them available globally to provide consistent capabilities across all application & infrastructure services within CS. The Solution Key Responsibilities:The Solution Architecture team is a global team that is multi-disciplinary in terms of having members with proven capabilities covering everything from enterprise architecture to global infrastructure service deployments. Requirements definition & specification for cloud adoption in enterprise level· Solution & component design· Implementation planning· Prototyping & evaluation· Providing technical recommendations· Best practice solution and implementation· . Designing, managing and implementing of infrastructure as code· Developing Terraform framework for infrastructure deployments· Defining security baselines and compliances· End-end troubleshooting of complex processes relating to delivering enterprise-class security services for (multiple) public cloud platforms that support diverse deployment patterns (PaaS, CaaS primarily)

Experienced migrating the on-prem application and database to AWS infrastructure by applying best practice considering the 5 pillars of AWS Well Architected FrameworksComposing and leveraging AWS CloudFormation Templates for utilization, to ensure repeatable, sustainable AWS infrastructure to be effectively managed.Deploying, testing and documenting development, pre-production, and production environments.Developing security implementation for data in transient and data at rest by encryption management service (AWS KMS)Creating VPC resources such as subnets, network access control lists, and security groups, bastion host and nat gateway.Backing up cloud resources (EBS Snapshots), including in a hybrid environment Leveraging resource tagging to allocate costs and optimize resource planningCreating gold images / AMIs and employing Auto Scaling Group integrated with Application Load Balancer as a target group.Monitoring application infrastructure, security and performance, enabling CloudWatch and CloudTrail. Analyzing the CloudWatch metrics on compute, storage and network resources to ensure the cost efficient usage. Reporting the idle or saturated usage and taking actions accordingly.Creating CloudWatch alarms with SNS topics and subscribers.Creating S3 Buckets with appropriate permission policy and cost effective and efficient lifecycle.Configuring reliable password policy and multi-factor authentication for one extra layer security.Creating IAM users, groups and roles with least privilege permission policies.Maintaining availability of critical AWS infrastructure as code and improving operational capabilities of enterprise infrastructure as approved and directed.Environment:Java, Scala, Javascript, HTML, CSS, Docker, JenkinsAWS Architected application including Amazon Linux, IAM, VPC, Subnets, Bastion Host, NAT Gateway, IGW, NACL, Security Groups, RDS Postgres, S3, ELB, CodeCommit, CloudTrail, CloudWatch, SNS, CloudFormation and Auto Scaling Group.

• Working closely with business analyst team to make sure code meets defined business requirements/user stories.• Defining and reviewing test plans for releases and identifying areas of risks to existing functionality.• Participating the ROM sizing and AGILE ceremonies, like Sprint Planning, Sprint Grooming, Daily Scrum, Demo Releasing and Retrospective Meetings. • Estimating and planning testing activities in collaboration with the project team, including all relevant details of the testing approach and scope.• Developing, designing and maintaining the necessary frameworks, which are the Hybrid, Data Driven and Behavior driven, for the test cases.• Managing / Arranging the necessary dependencies (API’s and JAR files) one with Maven (POM.xml file) including Selenium, Java, JUnit, Cucumber and package.json including Selenium, Javascript, Chai, Cucumber, Proctractor, NodeJS (NPM).EnvironmentEclipse, Selenium WebDriver, Java, JUnit, Cucumber, Maven, Jenkins, JIRA, XML, HTML, AGILE.WebStorm, Selenium, Protractor, Javascript, Cucumber, Chai, Chai-Promised, Jenkins, Jira, Angular, NodeJS, AGILE

• Founder/Manager of the Soar Partners mainly focusing on developing automation testing frameworks for web applications and consultancy in various kinds of domains using latest tools and technologies.• Finding out necessary human resources and building up the QA teams.• Collaborating with Product Owners and Developers required on acceptance criteria and functionalities. Prioritizing the QA activities based on the delivery schedules and feature functionalities.• Designing and developing automation detailed test cases based on product requirements and best suitable automation testing framework from scratch.• Following the best practices and improving the Quality of the Testing Processes by developing most suitable automation-testing framework.• Being essential to enhancing established test harnesses as well as logging and verifying defect fixes.• Being responsible for delivering in all aspects of testing, including smoke, functional, regression testing.• Managing the integration of tools and their dependencies.• Designing/Configuring builds for CI. • Working collaboratively with product owners to deliver the testing activities within the death lines.• Taking actively role in AGILE regular and impromptu meetings.• Identifying, recording, thoroughly documenting, and tracking issues through the entire bug lifecycle in defect tracking tool (Jira).• Participated in design sessions and provide feedback on requirements and design specifications.• Maintained high customer satisfaction through the delivery of high-quality, timely, and thorough solutions to customer problems

Provides analytic solutions and data prediction models for energy companies. Gathering the past inflow data of a water basin and preparing the data for the prediction model by using basic statistical techniques. Developing and implementing data collection systems and other strategies that optimize data quality.Constructing new analytical techniques that better utilize company resources, which include identifying new technologies such as artificial intelligence or new methods such as predictive analytics. Supplying appropriate statistical technical expertise when requestedFiltering and cleaning data to find errors or opportunities for optimization. Working closely with clients to prioritize business and information needs. Clearly summarizing findings in oral, written, and graphical forms.Conducting external benchmarking, actively participating in external working groups regarding data analytics. Using regression analysis to predict the inflow for next 40 years of basing to do hydropower optimization. Developing neural network prediction model to estimate cost of a hydropower plant projects (This is the master thesis which was earned in 2009).