Anton Starkov Email & Phone Number

Serbia

Responsibilities:- Leading teams of 3 to 6 people- Providing mentorship, conducting code reviews, performing task management- Designing and scaling high-loaded VoIP services- Conducting performance, stress, failover tests- Overseeing cloud (AWS, GCP) infrastructure and budgeting- Being in charge of DevOps-related activities (CI/CD, IaC, logging, monitoring, alerting)Key achievements: - Led and completed a standalone project of bundling our product as a vendor solution and deploying to customer's infrastructure- Scaled the solution to withstand 40x the original traffic (up to 400 Call-Attempts-Per-Second and 40,000 simultaneous Call Channels)- Integrated high-availability solutions into the architecture, achieving 99.95% uptime SLOTransitioning to Apifonica marked a shift to a new team and project within the same company. This role introduced me to Go — a language that has since become my primary choice. Alongside my established stack (PHP, MySQL, Redis, Docker), here I have extensively worked with plenty of different technologies including Lua, RabbitMQ, FreeSWITCH, OpenSIPS, Kubernetes, Prometheus, Ansible, and Terraform — just to name a few.My main areas of responsibility have been: adding new features to telecommunication core components that handle VoIP traffic, developing user-facing API and business logic behind it, overseeing product infrastructure and cloud budgeting, providing mentorship and conducting code reviews for my team members. At Apifonica, I continued to nurture DevOps practices within the company, whether it be by refining CI/CD processes, getting people accustomed to monitoring and alerting systems, or organizing knowledge transfers. I believe my input so far has helped with transparency across our teams and infrastructure, resulting in minimal production incidents but fast feature time-to-market.

Responsibilities:- Migrated from vendor switching software to an in-house SIP/VoIP stack (FreeSWITCH, OpenSIPS)- Developed a custom billing integration (RADIUS)- Worked on stability and scalability for core components, e.g. load-balancing, database partitioning, monitoring- Collaborated closely with DevOps team in order to improve the technical processes company-wideKey achievements: - The in-house switching solution unlocked opportunities for customized VoIP integrations, such as long-awaited Speech Recognition, while simultaneously eliminating a major CAPEX in the budget- Zero-downtime deployments for all company services- Significant incident rate and response time reduction due to improved DevOps processes, resulting in 99.9% services SLA

Responsibilities:- Maintained and improved user-facing REST APIs- Developed custom adapters and services on top of main APIs- Worked on reusable and maintainable scripts for batch-processing of business data- Introduced and adopted unit-testing inside the team

Responsibilities:- Developed JSON-RPC web services- Adopted the containerization and CI/CD processes in the company- Moved main application from the monolith to the microservicesI joined Dzinga shortly after graduation, my career officially began as a Junior PHP Developer. From the start, I decided to focus on backend-related work, to hone my skills in server-side programming, designing APIs, working with databases and deployment processes. I worked with PHP, Yii1 and Yii2 frameworks, MySQL, Redis, as well as Linux environments. Our infrastructure comprised a mix of on-premises solutions, private hosting, and later, deployments on AWS EC2.My biggest achievement at Dzinga was convincing my team that containers and Docker in general were the way to move forward. I actively participated in implementing containerization, CI/CD and decomposing the monolith into microservices.