Simion Agavriloaei
Tech Lead & Infrastructure Architect
Building Infrastructure That Works
I've migrated monoliths to microservices and consolidated them back when it made sense. Experience matters more than trends.
PythonDjangoGoKubernetes
Tech lead and architect with 16+ years leading teams and making infrastructure decisions at scale. I guide architectural choices—when to migrate to microservices, when to consolidate back, when to move off cloud providers. I mentor engineers, conduct architecture reviews, and make pragmatic decisions based on team size and business needs, not trends.
Currently running production AI/LLM workloads processing 75M+ daily tasks on self-managed Kubernetes infrastructure. Built complete bare-metal K3s platform, integrated multiple LLM providers with vector search. Hands-on when needed, but focused on architecture, team leadership, and technical strategy.
Technical Skills
Leadership Architecture
AI & LLM
Scraping & Automation
Bare-Metal Infra
Data & Messaging
Databases
Languages
Frameworks
Mobile Development
Architecture
Professional Experience
Tech Lead | AI Strategy & Infrastructure @ DontPayFull
Jul 2018-Present- Lead engineering team—architecture decisions, code reviews, technical mentoring. Guide when to use new tech vs proven solutions. Made pragmatic architectural calls: migrated monolith to microservices for scale, then consolidated back when team velocity mattered more than complexity.
- Architected and built production AI/LLM infrastructure processing 75M+ daily tasks. Integrated Gemini, OpenAI, and Anthropic APIs for content analysis and generation.
- Built high-volume web scraping infrastructure using Browserless/Playwright with custom parsers (lxml/selectolax). Handles millions of pages daily with distributed task queues and smart rate limiting.
- Built and manage self-hosted Kubernetes platform on bare metal. Complete infrastructure: K3s orchestration, Cilium eBPF-based networking, Ansible provisioning, GitOps deployment. Moved off expensive cloud providers—reduced costs 70% with full control.
- Designed high-throughput streaming architecture: Redpanda/Kafka for event streaming, RabbitMQ for task distribution, Golang services for low-latency processing. Complete observability with Prometheus/Grafana/Fluentd.
- Built federated GraphQL gateway in Go to replace Django monolith. Made architectural decision to later consolidate fragmented services—simpler operations, faster shipping for small team.
- Stack: Python/Django, Golang, K3s, Cilium, Ansible, Redpanda/Kafka, RabbitMQ, CockroachDB, MinIO, Gemini/OpenAI/Anthropic.
Lead Full Stack & DevOps @ Pentalog
Nov 2016-Jul 2018- Provided technical leadership, making architectural decisions for modernizing applications from legacy PHP to Angular 5 + Django/Python stack.
- Led development & maintenance of backend services (Django/Python) and frontend applications (Angular 5), ensuring high code quality with TDD.
- Achieved 95%+ test coverage through comprehensive unit testing.
- Managed DevOps tasks for ~30 Linux servers: deployment, CI/CD, monitoring, and automation.
- Ensured synchronization between legacy and new applications with complex data migrations.
- Introduced containerized environments (Docker/Compose) for various tools.
- Designed Celery/RabbitMQ task processing for data synchronization.
- Conducted developer interviews, technical audits, and led multiple Django upgrades.
- Developed Node.js/Socket.io server for real-time functionality.
- Successfully migrated data from legacy systems into new infrastructure in Agile/Scrum environment.
Software Developer @ DontPayFull
Oct 2014-Oct 2016- Led backend development using Django/Python for DontPayFull.com, optimizing performance and scalability.
- Developed and maintained backend modules, APIs, and data processing tasks.
- Managed Celery/RabbitMQ for 15M+ tasks/day and implemented crawlers for data collection.
- Built database solutions with Percona/MySQL, MongoDB, and ORMs.
- Conducted code optimization, profiling, and performance tuning for high-load systems.
- Designed real-time reporting systems with WebSockets and automated deployment using Docker.
- Led technology research, code reviews, and server maintenance.
- Rewrote Celery/RabbitMQ architecture, developed monitoring dashboard, and implemented proxy rotation system.
- Led Django upgrades, refactored crawlers, and achieved significant performance optimizations.
Web Developer @ JobRight (Project-based)
Jul 2014-Oct 2014- Developed and enhanced JobRight, a dynamic bi-directional communication platform fostering connections among candidates, companies, and training partners.
- Executed both backend and frontend development tasks, ensuring seamless functionality and user experience.
- Utilized diverse range of technologies: Python, Django, Mandrill, IronMQ, and SQL procedures for efficient data management.
- Implemented frontend features using JavaScript, jQuery, and Bootstrap 3 with customized LESS mixins for visually appealing interface.
- Managed deployments and maintenance activities using Gunicorn, Nginx, and Fabric, ensuring optimal performance and reliability.
Software Developer @ Assist Software
Aug 2010-Jul 2014- Developed and optimized backend and frontend web applications using Python/Django and PHP, enhancing overall performance and user experience.
- Led teams as Scrum Master, driving Agile processes and ensuring seamless project delivery by removing blockers and fostering collaboration.
- Implemented unit testing, code reviews, and quality assurance practices to maintain high standards of code integrity and application reliability.
- Integrated various third-party APIs such as Slack, Facebook, PayPal, Stripe, and Amazon, expanding functionality and connectivity.
- Proficient in wide range of technologies: Python/Django, PHP, JavaScript (AngularJS, D3.js, jQuery), CSS3, HTML5, Bootstrap, and various APIs.
- Experienced in utilizing tools and frameworks like Git, Subversion, MySQL, Drupal, and WordPress to streamline development processes.
- Contributed to diverse projects such as Assist Software Website, HealthBeacon, Qualsyst app, and NetCapital, showcasing adaptability and versatility.