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Victor Macari

@victormacari

Senior Full Stack Engineer at Costt POS who built a POS API and integrated national tax invoicing and payment validation.

Moldova

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At Costt POS, I built an API for POS terminal connectivity, tax invoicing, and payments. I also developed an integration with the national Tax Authority API for invoice and payment validation.

At Amdaris, I built and maintained a microservices-based CRM for Robert Walters. I migrated search endpoints from GraphQL to a REST API backed by ElasticSearch, improving query performance by about 30%, and built billing modules using CQRS and the Saga Pattern.

At Orange Systems, I developed a billing system for an internet service provider and built the foundation of a Nest.js monorepo. Earlier, at Safeguard Global, I built a payroll and accounting platform and improved financial-report query efficiency by about 30% by adding indexes.

Experience

Work history, roles, and key accomplishments

Senior Backend Developer

Costt POS

Dec 2025 - Jul 2026 (7 months)

Built an API for a POS company covering terminal connectivity, tax invoicing, and payments. Developed integration with the national Tax Authority API and a government compliance system.

NestJS PostgreSQL TypeORM Redis Elasticsearch AWS AWS ECS S3 Cloudwatch GitHub Actions

Backend Developer

Amdaris

Jun 2022 - Dec 2025 (3 years 6 months)

Built and maintained a microservices-based CRM for a recruitment company. Migrated search endpoints to REST, built billing modules with CQRS and Saga, and led critical releases.

NestJS PostgreSQL MikroORM Redis gRPC Elasticsearch Helm Charts CircleCi CQRS Saga Pattern Docker CI CD

Full-Stack Developer

Orange Systems

Sep 2021 - May 2022 (8 months)

Developed a billing system for an internet service provider and built the foundation of a Nest.js monorepo.

NestJS TypeORM PostgreSQL MongoDB React

Full-Stack Developer

Safeguard Global

Apr 2019 - Aug 2021 (2 years 4 months)

Built a payroll and accounting platform serving multiple clients. Developed complex SQL queries for financial reports and improved query efficiency by ~30% with indexes.

KoaJS PostgreSQL React SQL Query Optimization