Lucas Cegatti

Software Engineer

São Paulo, São Paulo, Brazil19 yrs 3 mos experience

Most Likely To Switch

Key Highlights

18 years of experience in mission-critical systems.
Expert in Elixir and architectural design.
Proven track record in mentoring and team leadership.

Stackforce AI infers this person is a Fintech Backend Engineer with extensive experience in scalable systems and team leadership.

Contact

Skills

Core Skills

Architectural DesignElixirJavaDocker

Other Skills

ResiliencySoftware DevelopmentKubernetesWeb ServicesSpring IntegrationApache KafkaJMSSQLScrumDesign PatternsKanbanSpringHibernateJSFJUnit

About

I’m a Staff Software Engineer with 18 years of experience building and maintaining mission-critical systems across fintech, banking, and large-scale platforms. Known for being resilient, responsible, and trustworthy, I perform best under pressure — especially when leading teams through high-impact incidents or critical technical challenges. I take a language-agnostic approach to engineering, with hands-on experience in Java, Ruby, Scala, and over seven years in Elixir, always focused on designing scalable, maintainable, and reliable solutions that drive business growth. At Stone, I help evolve the banking transactional core, ensuring our financial ledger and systems scale with the company’s expansion, while mentoring engineers and guiding architectural decisions that strengthen performance and reliability.

Experience

19 yrs 3 mos

Total Experience

1 yr 11 mos

Average Tenure

2 yrs 10 mos

Current Experience

Stone

2 roles

Staff Software Engineer

Promoted

Oct 2024 – Present · 1 yr 8 mos · Brazil

As part of the Banking Transactional Core team, I focus on building and evolving the foundational systems that power Stone’s financial operations. My main responsibility is ensuring our core ledger and transactional platform scale reliably to meet the company’s rapid growth and increasing business demands.
Key contributions and responsibilities include:
Architecting and evolving the ledger platform, ensuring high throughput, accuracy, and resilience across millions of daily financial transactions.
Designing and implementing scalable, event-driven components to support new banking products and improve system reliability.
Collaborating with cross-functional teams to align architectural decisions with business objectives and compliance standards.
Reviewing and mentoring senior engineers to uphold high technical standards, code quality, and best engineering practices.
Driving continuous improvements in system performance, observability, and scalability, enabling sustainable long-term growth for Stone’s financial ecosystem.
By combining deep technical expertise with a strong focus on mentorship and system design, I help ensure Stone’s banking platform remains robust, scalable, and future-ready.

Architectural DesignResiliencyElixirJavaSoftware DevelopmentKubernetes+1

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Senior Software Developer

Oct 2015 – Jan 2016 · 3 mos · Araraquara, Brazil

Dev at Walmart's Catalog project
Developed docker and docker-compose images to build dev and test environments
Generated tests coverage reports via Sonar and Maven
Part of an agile team using Kanban
Developed solutions with Spring Integration and Apache Kafka
Technologies
Docker
Redis
Solr
ActiveMQ
Java 7
Maven
Sonar
Spring Integration
Apache Kafka

DockerJavaSpring IntegrationApache Kafka

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Feb 2009 – May 2015 · 6 yrs 3 mos

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Integrated legacy apps by providing a solution of MQ and JMS by processing messages through online services.
Developed online services to process a high volume of messages in a daily basis.
Developed web solution to maintain customer data provided by online services.
Responsible for support and scalability of the apps.
Technologies: Java (J2EE, Hibernate, Jakarta Struts, Servlets, JSP, Eclipse, JasperReports, JMS, Apache Ant, Spring), JavaScript (ajax, jQuery), SQL, Subversion, Git, HTML, CSS, Unix/Linux, Apache Tomcat, Websphere, XML.

JavaJMSSQL

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JavaSQL

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Java

Visual systems informatica ltda.

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Java