Mateus Lazarus

Software Engineer focused in high-scale financial applications

📧 [email protected]📍 São Paulo, Brazil
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Notable Projects

Credit Product Platform at Stone

Institutional Site

One of the responsibles for: leverage requirements, design, and implement the backend vendor platform for all credit products, such as: Working Capital, Short Term Credit. By that platform we grown from 10k req/daily to 1M+ req/daily with more than 99.95% uptime, more 85% code coverage and a credit wallet from 0 to 1 billion in 3 years along with monitoring of all client journey (JPDEX)

C# .NET • Azure • Azure Service Bus • Kafka • SQL Server • Docker • Kubernetes (K8) • Terraform • New Relic • Datadog • Grafana Loki / Prometheus

Short Term Credit Management at Stone

Institutional Site

One of the responsibles for all the backend platform for Short Term Credit Management, which is a product that allows clients to get credit in less than 2 minutes, with more than 99.95% uptime, more than 95% code coverage and +50 millions managed automatically. Handling the client short term credit wallet from creation, concession, payment and management of risk

MongoDB • C# .NET • Azure • Azure Service Bus • Kafka • Docker • Kubernetes (K8) • Terraform • Datadog • Grafana Loki / Prometheus

Specialized Credit Analysis at Stone (not public available)

The internal platform to manually analyze risk of high tickets clients with individual credit analyzes over R$ 20 Millions ($5 Millions dollars) and over 100 clients analyzed daily. Reconstruction of the platform from a monolith to a microservices architecture, handling all credit journey from risk analysis to concession with target Journey APDEX (JPDEX) over 90%

C# .NET • Azure • Azure Service Bus • Docker • Kubernetes (K8) • Terraform • Datadog • Grafana Loki / Prometheus

Experience

2022 April - Present
  • Working on high-scale financial applications with a billion requests monthly maintaining 99.95%+ uptime
  • Maintaining exceptional code quality with more than 95% code coverage across all projects
  • Designing and implementing cloud solutions for high demand and reliability needs in the financial sector
  • Implementing microservices environments using Domain-Driven Design (DDD) and Behavior-Driven Design (BDD) practices
  • Leading migration projects from SpecFlow to Reqnroll for BDD testing frameworks
  • Working with comprehensive technology stack including C#, .NET, JavaScript, TypeScript, and various Azure/AWS services
  • Implementing automated testing strategies using SpecFlow, Reqnroll, and PlayWright for functional testing
  • Contributing to DevOps initiatives with CI/CD pipelines using GitHub Actions and Azure Pipeline
  • Managing observability and monitoring using New Relic, PingDom, Datadog, Grafana Loki, and Splunk
  • Working with data lake solutions using Google BigQuery for analytics and reporting
  • Implementing Infrastructure as Code (IaC) using Terraform for cloud resource management
Technologies: C# • .NET • Azure • Kafka • MySQL • MongoDB • SQL Server • Docker • Kubernetes (K8) • Terraform • All pyramid of tests
2019 Jan - 2022 April
  • As a seasoned freelance developer, I have actively contributed to projects characterized by their low maintenance requirements and substantial impact on fostering customer loyalty to the associated brands
  • Utilizing technologies such as PHP, Relational Database, and Javascript, I laid a solid foundation for acquiring a profound understanding of the paramount aspect in development – creating tangible value for both the business and its clientele
  • Among my notable achievements is the pivotal role I played in enhancing various facets of operations for Atenas Fit Oficial, a longstanding local enterprise with over a decade of presence in the fitness and health industry. In this capacity, I focused on optimizing CRM services, fortifying entrance security protocols, and implementing measures to closely monitor disengaged and unpaid customers, thereby contributing significantly to the overall operational efficiency and client satisfaction within the organization
Technologies: C# • .NET • JavaScript • TypeScript • Angular • Node.js • React.js • PHP • Laravel • MySQL • PostgreSQL • Express.js

Professional Summary

Experienced Software Engineer with 5+ years of experience solving problems with software and high engineering. Currently working on applications with a billion requests monthly, more than 95% of code coverage and uptime >99.95%. Software engineering with experience in designing and creating cloud solutions for companies dealing with high demand and reliability needs. Proficient in coding best practices, design patterns, microservices environments, Domain-Driven Design (DDD), Behavior-Driven Design (BDD), DevOps concepts, Test-Driven Development (TDD), and monitoring.

Technical Skills

Languages

C# • JavaScript • TypeScript • Python

Frameworks

.NET • Angular • Express.js • Next.js • Node.js • React.js

Tools

AWS • Azure • Azure Pipeline • Cloudflare • Datadog • Docker • Kubernetes (K8) • Git • GitHub Actions • Google BigQuery • Grafana Loki • Grafana K6 (software testing) • Grafana Loki / Prometheus • Kafka • MongoDB • MySQL • SQL Server • New Relic • Nginx • PlayWright • PostgreSQL • RabbitMQ • Reqnroll • Selenium • SpecFlow • Splunk • Terraform

Languages

Portuguese (Native) • English (Professional) • Spanish (Basic)

Education

Computer Science Bachelor

University of Estacio de Sá

GPA over 9 out of 10 over 5 semesters

Jan 2022 - Present

Certifications

Software Architecture Fundamentals

Desenvolvedor.io

View Certificate

Fundamental knowledge of software architecture: modular monolith, microservices, components trade-offs and evolutional architecture

October 2023
Data Structures and Algorithms - Augusto Galego

Hubla

View Certificate

Revisiting data structures and algorithms in a deep dive, focused in Big Tech DSA interview preparation

Fev 2025