Tanat Lokejaroenlarb Email & Phone Number

Barcelona, Catalonia, Spain

Key Achievements and Contributions:Architectural Leadership: Spearheading architectural shifts to enhance platform adaptability, ensuring the system is equipped to handle evolving market demands. Working closely with the technical lead to shape and execute the team’s technical roadmap.Cloud Cost Optimization: Directed a cost-saving initiative that reduced monthly expenses by over $200,000. Focused on increasing cost visibility, cost attribution, and identifying optimization opportunities, creating sustainable savings for the platform.Strategic Oversight and Communication: Known for clear, data-driven communication that fosters actionable insights and measurable results. My work involves practical, assertive approaches to drive closure on initiatives, aligning with both infrastructure and software engineering principles.Platform Scale and Reliability: Led the technical design and operation of a large-scale internal platform supporting major digital marketplaces. Managed over 30 Kubernetes clusters, 2,300 nodes, and a peak throughput of 8 billion requests daily.Incident Management: Participated in over 300 production incidents, taking on roles from incident commander to postmortem analysis, contributing to resilient platform operations.Knowledge Sharing and Industry Engagement: Represented Adevinta at conferences and authored industry-referenced blog content, attracting 40,000+ views on Medium. Publications included references from Pragmatic Engineering, LearnK8S, SREWeekly, and Grafana Labs.

Barcelona, Catalonia, Spain

Responsibilities & Key Contributions:Platform Scale and Reliability: Led the technical design and operation of a large-scale internal platform supporting major digital marketplaces. Managed over 30 Kubernetes clusters, 2,300 nodes, and a peak throughput of 8 billion requests daily.Platform Reliability and On-call Health: Established reliability practices and streamlined on-call processes, reducing incidents and optimizing health metrics. Introduced self-healing mechanisms that cut down incident paging to 0-1 pages per week.Enhanced Observability and Security: Developed a federated observability system and implemented advanced security policies (network policies, enforcement policies) across the platform. Provided internal users with reliability contracts via Service Level Objectives (SLOs).Innovation in Scaling and Upgrades: Drove a shift from Blue-Green to in-place upgrade processes for EKS clusters, significantly reducing engineering effort and simplifying the upgrade cycle. Expanded platform capabilities under the "Polaris" project to accommodate twice the workload and scale seamlessly across multiple regions.

Barcelona, Catalonia, Spain

Adevinta is a global classifieds specialist with market-leading positions in key European markets.As part of the central platform team, we provide our development team with a robust internal platform runtime on top of Kubernetes on an incredibly large scale.Our team operates more than 30 Kubernetes clusters as cattle hosting more than 40,000 active pods over > 700 nodes on AWS and growing. we serve more than 70k req/s across the fleets.My responsibility includes:- Maintaining a robust production environment for our market places- Manage and propose SLOs for our provided services such as managed certificates, logs, ingresses for our platform users- Provide seamless integrations for platform users (IAM, Logging, Monitoring, Auto-scaling) to speed up their path to production- Develop features that help platform users to have great experience of on-boarding and running on the platform - Develop and maintain proprietary Kubernetes operators to absorb toils that accelerates customer's productivity and stability of the platform- Gather clusters, tenants, application metrics and utilised them to monitor, alerts, or operate clusters in a self-healing, ready-to-scale way

Bangkok Metropolitan Area

Oversee the whole AWS cloud infrastructure of Monix (more than 3.5M users now and increasing quickly!) including network, security, and platform.Working with development team in Beijing 🇨🇳 to ensure high availability of production services to be able to serve our end customers at all time.Taking care of DevSecOps development and delivery process by making sure that developers can perform their works effortlessly and efficiently while ensuring that security perimeters are met with standard requirements from auditors.I introduce best practices and state of the art technologies adopted from CNCF and opensources that are widely use, such as GitOps with ArgoCD, Kubernetes operators, Hashicorp's Vault, Harbors and many more to keep technology roadmap of our company to catch up with industry's pace.Technologies I have got my hands on includeAWS services: VPC, EC2, EKS, RDS, Route53, Cert Manager, ALB, ELB, ElastiCache, etc (almost all services)Tools: Gitlab, Harbor, ArgoCD, Helm, Kubernetes, Docker, Jenkins, Terraform, Hashicorp's Vault, SonarQube, ELK stacks.Middleware: Kafka, RabbitMQ, RocketMQ, Redis, MongoDB, MySQL, PostgreSQL.Development: Java Spring Boot, Python, Dubbo(RPC)

Bangkok Metropolitan Area, Thailand

Working as a technical lead in DevOps Platform engineering team.Our team, partnered with Thoughtworkers in Houston and Wuhan, is responsible for research and development of best practices, technologies and platform for digital transformation teams (over 50+ developers over the world), and providing technical consultant to help modernised ExxonMobil digital plaform to accelerate Digital Transformation.We provide a "Starter kit" for teams to kick start their development quickly and effortlessly. This includes common integration libraries, well-established IaaC module, best practice references and architecture guardrails.Our technology stacks cover infrastructure provisioning using Terraform, Deployment of Kubernetes application with Helm on Azure. CI/CD pipeline and IaC for Azure and Redhat Openshift. In addition, from development aspect, we provide 12 factors Spring boot referenced project for teams to adopt best practices across software development lifecycle.

As a system architect for Europe Lubes Logistics project, involved with project teams of more than 30 developers across the globes.I helped designing a robust, scalable system that enabled new logistic options in the eCommerce system and make sure that actual implementations are aligned with the design.I worked closely with a global team consisting of different countries (🇨🇿🇺🇲🇹🇭🇩🇪🇧🇷🇨🇳🇳🇪) and received great opportunities to travel and run design workshops to make sure that all system components worked together seamlessly, and the design is flexible and easy to expand business capabilities in the future.Using a wide knowledge of architectural designs including Rich Domain Microservices architecture, Event-driven architecture using Kafka as a messaging broker and localised data caching with Redis to decouple these systems to minimise tightly coupled implementation.

Bangkok Metropolitan Area

Working as a lead developer for ExxonMobil's digital transformation project to modernised eCommerce platform.I lead a development team to build Microservices RESTful APIs on cloud platform using Redhat Openshift. Building containerised cloud-ready applications using Java Spring boot.As a lead software engineer, I take all responsibilities of building a modern application from establishing an infrastructure as a code template, stabilise and streamlined CI/CD workflow, ensure code quality are met with the enterprise standard.I also ran a session such as code review, technical huddle for teams to be able to improve their work and come up with ideas to enhance the system.Apart from working in particular team, I expand my skills to help resolving cross-cutting issues that all ExxonMobil developers around the world faced, such as common CI/CD practises, Customer identity authentication strategy, services monitoring, IaC, and etc.My main recognition for this role is the ability to build knowledge among organisation. I held many sessions teaching about CI/CD, DevOps, Docker, Kubernetes, TDD, etc.Technologies stacks:Java Spring boot, NodeJS.Jenkins, Openshift, Docker, Kubernetes.OAuth, RESTful, SSL.

Bangkok Metropolitan Area, Thailand

Working in a highly experienced technical scrum team to develop an automated end to end testing framework for global entetprise product. Using leading industry technologies such as Java Spring framework, Hibernate ORM, Jenkins, Cucumber, AngularJs.I have started my passion as a software developer here learning from passionate senior developers. I adopted great software development best practices like Test Driven Development, Behaviour Driven Development, and learnt how proper softwares are done right