
Leonardo Oliveira Das Neves
@leonardooliveiradasn
I build scalable enterprise web applications with Angular, React, TypeScript, and front-end architecture.
What I'm looking for
I've built and evolved enterprise web applications for AmorSaúde, SulAmérica, Keyrus, Avanade, and CoreBiz, serving healthcare, insurance, banking, and e-commerce initiatives. My work centers on scalable Angular and React applications, reusable components, responsive experiences, REST integrations, and maintainable front-end architecture.
At AmorSaúde, I lead Angular and NestJS engineers, implemented Amazon Cognito SSO with MFA, and guide architecture, production delivery, mentoring, and hiring. I enjoy partnering with Product, UX/UI, QA, Back-End, and DevOps teams to turn complex requirements into reliable products.
Experience
Work history, roles, and key accomplishments
Tech Lead | Angular - TypeScript - JavaScript - Node.JS - AWS
Oct 2025 - Aug 2026 (10 months)
I worked as a Tech Lead at AmorSaúde, providing technical leadership to Front-End (Angular) and Back-End (NestJS) engineers, with responsibility for architecture, technical decisions, engineering best practices, and delivery through production.
• Led the implementation of a new SSO solution using Amazon Cognito (AWS) with MFA, strengthening application security and providing greater control over
Senior Front End Software Engineer | Angular - TypeScript - RxJS - NgRx - Signa
May 2024 - Sep 2025 (1 year 4 months)
As a Senior Front-End Engineer at SulAmérica, I contributed to the evolution of enterprise web applications and business-critical features, focusing on scalability, performance, software quality, and user experience.
• Developed and delivered strategic features, including Limit Management and Rule Exception Registration modules, supporting essential operational processes and improving business ef
Senior Front End Software Engineer | Angular - TypeScript - RxJS - NgRx - Sign
Oct 2023 - Apr 2024 (6 months)
As a Senior Front-End Engineer at Keyrus, I contributed to the development and evolution of web applications, focusing on scalable, performant, and business-oriented solutions.
• Developed web applications and new features using Angular, TypeScript, JavaScript, HTML5, CSS3, and SCSS.
• Built reusable components and responsive interfaces following Front-End development best practices and architec
Senior Front End Software Engineer | JavaScript - Angular - React - Typescript
Feb 2020 - Aug 2023 (3 years 6 months)
As a Senior Front-End Engineer at Avanade, I contributed to the development and evolution of enterprise web applications for major organizations across the financial, banking, and insurance sectors.
• Developed web applications and new features using Angular, React, TypeScript, JavaScript, RxJS, HTML5, CSS3, and SCSS.
• Worked on projects for major organizations including Santander, Itaú Unibanc
Front End Developer | HTML5 - CSS - JavaScript - GraphQL - VTEX
Nov 2018 - Feb 2020 (1 year 3 months)
As a Front-End Developer at Corebiz, I worked on-site with Grupo Boticário, contributing to the development and evolution of e-commerce experiences on the VTEX platform, with a strong focus on performance, usability, campaigns, and customer experience.
• Developed and maintained custom landing pages and campaign experiences using HTML, CSS, JavaScript, and VTEX, supporting marketing initiatives a
Trainee Service Desk | Windows - Microsoft 365 - Remote Desktop
May 2017 - Jun 2018 (1 year 1 month)
* Triage of calls: I start the day by reviewing the queue of open calls, prioritizing them according to urgency and importance. I analyze the descriptions of problems reported by users and classify them in order of response.
* Answering calls: I answer user calls by phone, email or ticket system, as per the guidelines of the support team. I listen carefully to user issues, ask additional question
Education
Degrees, certifications, and relevant coursework
Uninove - Universidade Nove de Julho
Bachelor of Information Systems, Tecnologia da Informação
2015 - 2019
Universidade Nove de Julho
Bachelor of Information Systems, Information Technology
2015 - 2019
Bachelor of Information Systems from Universidade Nove de Julho, completed in 2019.
Uninove - Universidade Nove de Julho
Information security, Network Management and Systems Security
2016 - 2018
Universidade Nove de Julho
Information Security, Network Management and Systems Security
2016 - 2018
Degree in Information Security from Universidade Nove de Julho, completed in 2018.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Salary expectations
Job categories
Skills
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