Meliksah S.

About Me

Senior Software Engineer with over 9 years of expertise in software development and architecture, specializing in cloud platforms and container technologies. Skilled in Java, Python, and AWS, with a proven history of enhancing system performance and reliability through innovative solutions. Committed to driving efficiency and scalability in high-demand environments, with a focus on service continuity and security.

Frontend

Backend

Database

DevOps

Docker AWS Jenkins GCP Kubernetes Cloud Migration Terraform AWS CDK Google Cloud Spanner Amazon Web Services (AWS) DevOps

Workflow

Other

Work history

Lululemon
Lululemon
Senior Software Engineer
2024 - Present (1 year)
Vancouver, Canada
  • Transitioned database generation to CI/CD, enhancing reliability and reducing errors.

  • Managed over 20 microservices, ensuring seamless operations and timely updates.

  • Integrated Datadog and Splunk for improved system monitoring and incident response.

PNC Bank
PNC Bank
Senior Software Engineer
2023 - 2023
Remote
  • Created a custom framework, cutting service onboarding time by 87.5%.

  • Migrated legacy apps to AWS, reducing document generation time by 73% and supporting 10,000 docs/sec.

  • Architected a fault-tolerant system, enhancing digital banking platform reliability.

  • Implemented automated monitoring, disaster recovery, and load balancing strategies.

Amazon
Amazon
Senior Software Engineer
2021 - 2022 (1 year)
Vancouver, Canada
  • Built a generalized authentication and authorization framework between Alexa services to reduce development time.

  • Managed Tier-1 services, enabling seamless global payment method integration for Amazon customers.

  • Designed and developed serverless on-demand deletion of customer payment methods required for CCPA and GDPR processes, which can scale up to 500,000 payment methods deletion per minute.

  • Built a core payment service that is the backbone of all payment workflows at Amazon handling 100,000 payments per minute.

  • Led a migration initiative for checkout-level interfaces for all major Amazon divisions (Twitch, Foods, Prime, etc.), with a focus on the localization of payment-sensitive data.

  • Responsible for technical design, code review, development, and operations management.

BilgeAdam Teknoloji
BilgeAdam Teknoloji
Senior Software Engineer
2020 - 2021 (1 year)
Istanbul, Turkey
  • Led microservice architecture design for Vodafone's customer support app, enhancing system reliability.

  • Developed a test-driven app, dockerized and scaled over OpenShift, reducing downtime to 0.01% and ensuring a seamless experience.

  • Implemented blue/green deployments, enabling zero downtime updates with robust health checks.

  • Migrated instances from on-demand to spot instances, saving more than 70% budget of the cloud.

  • Collaborated with the Information and Communication Technologies Authority and translated Vodafone needs into concrete technical requirements.

Optiva Inc.
Optiva Inc.
Senior Software Engineer
2018 - 2019 (1 year)
Remote
  • Enhanced app performance by 55% using auto-scaling, Kubernetes, Docker.

  • Migrated DB from Oracle to Google Spanner, boosting DB performance by 120% and lowering operational costs by 36%.

  • Collaborated closely with the production teams, analyzing software requirements and technical needs to create functional, effective applications.

  • Coordinated development from concept to delivery, ensuring architectural compliance.

  • Implemented design plans and prepared technical documentation to monitor project status.

  • Determined architectural compliance within the context of system architecture and best practices in line with requirements.

  • Coordinated activities including product development, prototype development, and implementation functions.

Geotab
Geotab
Senior Software Engineer
2017 - 2017
Remote
  • Designed and developed a mobile-first responsive application with RESTful web services and APIs, boosting software availability by 40%.

  • Migrated legacy systems to 12 microservices, enhancing failover strategies for 7 transportation companies.

  • Developed SaaS strategy on AWS, reducing customer operation costs by 40%.

  • Created technical roadmaps, migrating infrastructure from managed virtualization to the cloud.

  • Worked on developing a go-to-market strategy by converting the product to SaaS on AWS.

JavaNode.jsMongoDBRedisKafkaAWSReact ReduxRESTFul APIs MicroservicesSaaSDevOpsPostgreSQLCI/CD Full Stack DevelopmentReact.jsBack-end Development Object-oriented Design (OOD) REST APIs TypescriptRedisnoSQLOAuthJavaScriptAPI Development Software ArchitectureTechnical Architecture Roadmaps
Amadeus
Amadeus
Software Developer
2017 - 2017
Istanbul, Turkey
  • Participated in a big migration project, updating current technologies of an old airline loyalty project with new technologies (from PL/SQL to Java).

  • Suggested improvements throughout the project, collaborating with technical teams, testing the applications, and making sure the project is completed on time.

JavaSpring BootHibernateHazelcastReact ReduxPL/SQLCI/CD Back-end Development REST APIs JavaScriptAPI Development Software Architecture
Eteration
Eteration
Software Developer
2016 - 2016
Istanbul, Turkey
  • Developed full-stack solutions for banking, enhancing process efficiency and adopting new tech.

  • Spearheaded the development and architected BBVA's loyalty program, enhancing enterprise engagement.

  • Developed a recommendation engine for Fizy using Collaborative Filtering for 20M users.

  • Solved complex data challenges to personalize music suggestions.

  • Developed tools and methodologies to improve the effectiveness of the overall development process, monitoring and implementing new technologies.

JavaSpring BootOracleApache SparkAngularHazelcastBanking Recommender Engine Recommendation Systems CI/CD React.jsAWSBack-end Development REST APIs Object-oriented Design (OOD) JavaScript

Showcase

Software Architect - Optiva (BSS, CPS, URCS)
Software Architect - Optiva (BSS, CPS, URCS)
  • Optiva provides business support systems and operation support system software and services to the telecommunications industry.

  • Their software solutions leverage next-generation technologies to help clients grow and improve performance.

  • Optiva collaborated with product managers to translate client needs into technical requirements and participated in architectural decisions for software development.

Software Architect - Amadeus Loyalty Management System
Software Architect - Amadeus Loyalty Management System
  • Amadeus Loyalty Management enables airlines to launch unlimited rule-based promotions to increase member engagement.

  • The solution captures and stores transaction data from flights, partner activities, and website logins, providing valuable intelligence for program development.

  • The software was migrated using new tech stacks, architected a new infrastructure from scratch, and deployed across 24 airline companies.

Software Engineer - Amazon Alexa Secure AI Foundations
Software Engineer - Amazon Alexa Secure AI Foundations
  • Stability AI is an open-source AI company focused on developing cutting-edge technologies.

  • Amazon SageMaker enables AI model training on a large scale with GPU/Trainium chips, reducing training time and cost by 58%.

  • Stability AI develops AI tools for Machine Learning Engineers and Data Scientists, leveraging Java, Typescript, Microservices, Docker, and AWS services.

Software Engineer - Amazon Payment Methods
Software Engineer - Amazon Payment Methods
  • Amazon Pay solution enhances shopper engagement, brand visibility, and security for millions of Amazon customers.

  • The solution is a core payment service handling 100.000 payments per minute.

  • The project utilizes technologies including Java, Typescript, Microservices, Docker, AWS CDK, Lambda, Step Functions, DynamoDB, SQS, SNS, IAM, VPC, Fargate, ECS, Application Load Balancer, API Gateway, HTML, SASS, CSS, Javascript.

Software Architect - Turkcell Music (Fizy)
Software Architect - Turkcell Music (Fizy)
  • Fizy app provides access to over 35 million songs and video clips across multiple devices.

  • The app utilizes a collaborative filtering algorithm and 20 nodes for deployment.

  • The solution is designed for Turkey, Germany, Ukraine, and Belarus with over 20 million active users.

Education

Advanced Architecting on AWS | Architecting on AWS
Advanced Architecting on AWS | Architecting on AWS
Amazon Web Services (AWS)
2022 - 2022
BE Computer Engineering
BE Computer Engineering
Yeditepe University - Turkey
2011 - 2015 (4 years)