Skills & Experience
Leandro Tocalini — Software Engineer focused on scalable backend systems, APIs, distributed architectures, and pragmatic AI-enabled products.
Core Skills
Languages
Python, Golang, Java, JavaScript
Backend & APIs
Microservices, gRPC/protobuf, high-throughput APIs, distributed systems
Data & Storage
PostgreSQL, MongoDB, CouchDB, Redis, Cassandra, HBase
Messaging
Kafka, RabbitMQ, SQS, event-driven architectures
Cloud & DevOps
AWS, Kubernetes, Docker, Helm, CI/CD, Infrastructure as Code
AI / LLM / Agentic Systems
LLM-powered workflows, agent orchestration, prompt engineering, and AI-assisted product automation
Observability
OpenTelemetry, Prometheus, Loki, Tempo, Grafana
Experience Summary
- Senior Software Engineer — Apple (2025–Present): scalable backend services using Java/RxJava, Cassandra, Kafka, and gRPC.
- Lead Software Engineer — Asset Metrix (2024–2025): distributed Python/Golang services, 40% fewer production bugs via observability, and major API performance gains.
- Senior Software Engineer — HubSpot (2022–2023): Java microservices, Kafka, AWS integrations, and 50% latency reduction on critical APIs.
- Head of Engineering — Top.Legal (2021–2022): led contract platform delivery and reduced processing times by 30%.
- Lead Data Engineer & DevOps — Fineway (2018–2020): built serverless data lake on AWS, improved ETL throughput, and reduced cloud costs by 20%.
Certifications
- AWS Certified Solutions Architect – Associate
- FinTech & Blockchain Specialization (Coursera)