Open to opportunities

Alexandr Isacov

@alexandrisacov

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I build reliable backend platforms, microservices, and data pipelines in Go, Python, and PHP.

Moldova

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What I'm looking for

I'm seeking backend or architecture roles where I can build scalable, reliable systems with clean design, strong observability, and well-defined service boundaries.

I've led backend architecture for RSPL's AI-integrated microservices, building Go, Python, and PHP services, data pipelines, API gateways, and Docker/CI/CD delivery. I improved PostgreSQL and Redis performance, reducing tail latency by approximately 30% while improving uptime.

Across IT-FINANCE and Introduct Group, I've built Kafka and gRPC streaming services, analytics storage in ClickHouse, and crypto-fintech integrations using Laravel and Node.js. I focus on clear service boundaries, reliable APIs, observability, schema design, caching, and idempotent systems.

Earlier, I led CRM, microservice, WebSocket, and hybrid mobile development for PRESTACALL and X-Cloud Solutions, improving database response times by 40% and standardizing delivery through code reviews, runbooks, monitoring, and automated deployments.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer | Architect

Current

RSPL

Feb 2024 - Present (2 years 6 months)

Lead backend architecture for AI-integrated microservices in Go, Python, and PHP; designed service boundaries, contracts, and deployment strategy. Built data processing pipelines and API gateways, added observability, and optimized PostgreSQL and Redis to reduce tail latencies by ~30%.

Go Python PHP Docker CI CD PostgreSQL Redis REST gRPC Observability SLOs Microservices API Gateway

Backend Engineer

IT-FINANCE

Feb 2023 - Nov 2023 (9 months)

Implemented streaming services with Kafka and gRPC, coordinating consumers/producers and schema evolution. Modeled analytics storage in ClickHouse and OLTP in PostgreSQL, added Redis caching and idempotency keys, and containerized workloads with Docker.

Kafka gRPC Clickhouse PostgreSQL Redis Docker Streaming

Backend Engineer

Introduct Group

Oct 2020 - Dec 2022 (2 years 2 months)

Maintained and extended a crypto-fintech ecosystem, building Laravel/Node.js microservices integrating a digital-asset transfer API. Improved system performance through DB indexes, query tuning, and async jobs, and enhanced developer productivity with runbooks and Docker scripts.

Laravel Node.Js Development Microservices Docker Database Optimization

Full-Stack Web Developer | Mobile App Developer | Microservices Architect

PRESTACALL SRL

Oct 2018 - Apr 2020 (1 year 6 months)

Led CRM development with Laravel and Vue/JS, built Node.js microservices and WebSocket services including device connectivity with Raspberry Pi. Delivered CRM and integration work for international clients, consolidated codebases, and refactored toward modular services.

Laravel Vue.Js Node WebSockets Raspberry Pi Microservices CRM Cordova

Full-Stack Web Developer | CRM System Developer

X-Cloud Solutions

Jun 2016 - May 2018 (1 year 11 months)

Built and enhanced CRM systems end-to-end with Laravel and Vue/JS, designed REST APIs, and implemented ORM patterns. Improved database design and optimization in MySQL/PostgreSQL, improving response times by 40% under typical workloads.

Laravel Vue.Js REST APIs ORM MySQL PostgreSQL Database Optimization