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Dimitar Zlatev

@dimitarzlatev

Senior Backend Engineer at Inner Circle who cut Pix payment-processing costs by ~30% and migrated search workloads to OpenSearch.

Bulgaria

Message

At Inner Circle, I work on backend systems for a high-traffic international dating app, with ownership across payments, monetisation, search, APIs, and data. I led the PagBrasil/Pix implementation from API integration through production, reducing Brazilian payment-processing costs by ~30%.

I built the OpenSearch integration and migration layer to move major search and recommendation workloads from MySQL. I also led a database-cleanup initiative, and subsequent query and index optimisation reduced average MySQL latency from 3+ ms to ~2.2 ms at ~381k transactions per minute.

Before Inner Circle, I developed and maintained web applications, CMS, and CRM systems at Sunset Resort Jsc. and as an independent developer. I built the Sunset Resort Property Owners Info Portal for 2,000+ property owners and delivered 200+ custom websites and applications for clients in multiple countries.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Inner Circle

Mar 2022 - Present (4 years 8 months)

Backend engineer for a high-traffic international consumer product, with ownership across payments, monetisation, search, APIs, and data. Led the backend implementation of PagBrasil/Pix, reducing Brazilian payment-processing costs by ~30%, and built the OpenSearch integration and migration layer.

PHP Laravel Symfony Kotlin Spring Boot JPA Hibernate Flyway MySQL OpenSearch Redis MemCached AWS SNS SQS New Relic Datadog Sentry Bugsnag Elastic Prometheus Loki Grafana

Full Stack Developer

Sunset Resort Jsc.

Jan 2006 - Jan 2022 (16 years)

Designed, developed, and maintained multiple web applications, CMS, and CRM systems supporting a large hospitality and property-management business. Managed business-critical web platforms and translated requirements from multiple departments into practical software solutions.

PHP JavaScript SQL CMS CRM Web Development Fullstack Development

Part-time Independent / Freelance Developer

Self Employed

Jan 2001 - Jan 2022 (21 years)

Built 200+ custom websites and applications, CMS, and CRM systems for clients in multiple countries. Delivered end-to-end products including requirements, architecture, backend/frontend development, integrations, deployment, and ongoing maintenance.

PHP JavaScript SQL CMS CRM Web Development Fullstack Development