Senior Backend Engineer · Go
Felipe Ascari
15+ years building backend systems. Go engineer since 2022, focused on distributed systems and scale.
15+ years building backend systems. Go engineer since 2022, focused on distributed systems and scale.
Started with Dataflex, building ERP and logistics software for freight companies. A decade in Java, mostly in public accounting: municipal tax systems, fiscal documents, the kind of software that has to be right. Then logistics at Ambev, and high-volume shipment systems at Mercado Livre, building Go microservices for the delivery pipeline under tight latency. Now at McGraw Hill, building an offer pricing orchestrator that ties together the full pricing chain for products and services across one of the largest edtech e-commerce platforms in the US. 15+ years in, still finding new things to break and fix.
Led the design of a Go API consolidating pricing rules across internal systems using DDD and Clean Architecture. Designed serverless workflows on AWS (Lambda, Step Functions, SQS/SNS) replacing manual financial processes, and instrumented services with New Relic. Also contributed to the Angular admin UI consuming the service.
Built high-volume event-driven Go microservices for logistics under a p99 budget of 100-200ms. Worked on daily delivery plan optimizations reducing carrier contract mismatch costs, and contributed to Mercado Pago flows around Meli Dolar (MUSD), a cashback stablecoin, handling consistency requirements of money movement at scale.
Delivered CT-e and MDFe transportation document systems supporting nationwide logistics for the AB InBev group. Led the migration from on-premises infrastructure to Microsoft Azure, including on-call support for issuance flows during peak distribution windows.
Led migration of fiscal and tax systems for municipal clients from legacy monoliths to Spring Boot microservices on PostgreSQL, moving deploy cadence from monthly to daily. Worked full-stack on AngularJS UIs over the Java backend. Earlier work covered financial and ERP modules with Oracle query optimization.
Go monorepo issuing cashback as ERC-20 tokens on Ethereum. Uses go-ethereum, Solidity, NATS JetStream for idempotent minting, and gRPC for wallet operations.
GoStateful TCP-based message processing system with job distribution, cryptographic validation, and async statistics processing.
GoService API for crypto exchange operations and integrations.
GoSimple key-value storage implementation focused on correctness and internal behavior.
GoEducational project focused on runtime and blockchain concepts, keeping the implementation intentionally simple.
GoService responsible for evaluating offer eligibility based on business rules and constraints.
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