Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm a senior frontend developer passionate about building scalable, secure client-side apps using TypeScript, Angular 18+ and UX-focused design. In Siemens Portugal I joined as a Senior Frontend Developer and, after about ten months, was promoted to Tech Lead Frontend with a focus on TypeScript, Angular 18+, and SASS, concentrating on UX/UI and frontend security. I lead architectural decisions, perform code reviews, and drive alignment with clients to ensure elegant, secure user experiences. I’ve worked in multi-country, agile environments, coordinating frontend work across markets and teams. I enjoy mentoring peers, refining requirements with clients, and turning complex needs into practical, UX-driven solutions. My experience spans multiple industries and roles, always with a focus on delivering solid frontend solutions and smooth collaboration with product, design, and backend teams.…I'm a senior frontend developer passionate about building scalable, secure client-side apps using TypeScript, Angular 18+ and UX-focused design. In Siemens Portugal I joined as a Senior Frontend Developer and, after about ten months, was promoted to Tech Lead Frontend with a focus on TypeScript, Angular 18+, and SASS, concentrating on UX/UI and frontend security. I lead architectural decisions, perform code reviews, and drive alignment with clients to ensure elegant, secure user experiences. I’ve worked in multi-country, agile environments, coordinating frontend work across markets and teams. I enjoy mentoring peers, refining requirements with clients, and turning complex needs into practical, UX-driven solutions. My experience spans multiple industries and roles, always with a focus on delivering solid frontend solutions and smooth collaboration with product, design, and backend teams.

Lumadaiara Nascimento Vittorino





I'm a senior frontend developer passionate about building scalable, secure client-side apps using TypeScript, Angular 18+ and UX-focused design. In Siemens Portugal I joined as a Senior Frontend Developer and, after about ten months, was promoted to Tech Lead Frontend with a focus on TypeScript, Angular 18+, and SASS, concentrating on UX/UI and frontend security. I lead architectural decisions, perform code reviews, and drive alignment with clients to ensure elegant, secure user experiences. I’ve worked in multi-country, agile environments, coordinating frontend work across markets and teams. I enjoy mentoring peers, refining requirements with clients, and turning complex needs into practical, UX-driven solutions. My experience spans multiple industries and roles, always with a focus on delivering solid frontend solutions and smooth collaboration with product, design, and backend teams.…I'm a senior frontend developer passionate about building scalable, secure client-side apps using TypeScript, Angular 18+ and UX-focused design. In Siemens Portugal I joined as a Senior Frontend Developer and, after about ten months, was promoted to Tech Lead Frontend with a focus on TypeScript, Angular 18+, and SASS, concentrating on UX/UI and frontend security. I lead architectural decisions, perform code reviews, and drive alignment with clients to ensure elegant, secure user experiences. I’ve worked in multi-country, agile environments, coordinating frontend work across markets and teams. I enjoy mentoring peers, refining requirements with clients, and turning complex needs into practical, UX-driven solutions. My experience spans multiple industries and roles, always with a focus on delivering solid frontend solutions and smooth collaboration with product, design, and backend teams.

Available to hire

I’m a senior frontend developer passionate about building scalable, secure client-side apps using TypeScript, Angular 18+ and UX-focused design. In Siemens Portugal I joined as a Senior Frontend Developer and, after about ten months, was promoted to Tech Lead Frontend with a focus on TypeScript, Angular 18+, and SASS, concentrating on UX/UI and frontend security. I lead architectural decisions, perform code reviews, and drive alignment with clients to ensure elegant, secure user experiences.

I’ve worked in multi-country, agile environments, coordinating frontend work across markets and teams. I enjoy mentoring peers, refining requirements with clients, and turning complex needs into practical, UX-driven solutions. My experience spans multiple industries and roles, always with a focus on delivering solid frontend solutions and smooth collaboration with product, design, and backend teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

French

Beginner

Work Experience

Tech Lead Frontend at Siemens Portugal

January 1, 2023 - Present

Joined as Senior Frontend Developer and, after ~10 months, promoted to Tech Lead Frontend specialized in TypeScript, Angular 18+, and SASS; focused on UX/UI and frontend security. Responsible for overall client-side application architecture, technical decisions, and code reviews following Angular standards. Direct client engagement to refine requirements and present UX-centered solutions. Led security-focused frontend development and coordination of development tasks on the server side.

Senior IT Consultant / Frontend Developer at Aubay (placed at Siemens Portugal)

July 1, 2021 - December 1, 2022

Placed by Aubay at Siemens Portugal as frontend developer specialized in TypeScript, Angular 11, and SASS, with a UX/UI profile. Worked in a large agile/scrum team in the GBS department (Global Business Systems). Developed new features across a big solution with four applications; conducted code reviews and ensured client-side development standards; collaborated with product owners and teams across markets to align requirements and drive frontend improvements with security considerations.

Full Stack Developer / Consultant at Fyld, Lisbon

October 1, 2020 - June 1, 2021

Full stack developer on a financial web system project (NET Core, DDD, Azure, SQL Server). Frontend involved React + Redux; served as Scrum Master for the team and coordinated with Product Owners. Delivered frontend and backend improvements, aligning with business requirements across markets.

UI Developer at Farfetch, Lisbon

June 1, 2018 - December 1, 2018

UI developer focusing on frontend with JavaScript, TypeScript, React (Redux), HTML5 and CSS3; worked in a Scrum environment for a luxury Swiss client, collaborating with design and backend teams to improve UI/UX and performance.

Full Stack Developer at Securibox, Lisbon

August 1, 2016 - May 1, 2018

Full stack developer contributing to several frontend and backend modules, using C#, .NET, and JS-based frontend technologies within a Scrum environment; collaborated with UI/UX designers and backend teams.

Software Engineer at CESAR, Recife - PE, Brazil

December 1, 2013 - July 31, 2016

Software Engineer working on frontend/back-end projects in a multi-team setup. Contributed to maintaining legacy systems and developing new features in a Scrum environment for major clients, including involvement in JavaScript, jQuery, and .NET-based solutions.

Researcher at INRIA, Paris - Île-de-France, France

October 1, 2012 - October 1, 2013

Researcher focusing on computer intelligence techniques applied to logistics problems with constraints. Conducted research in Java; contributed to prototypes and collaborations in a multidisciplinary team.

Systems Engineer at CESAR, Recife - PE, Brazil

July 1, 2010 - October 1, 2010

Worked on Java and C++ projects for varied clients; contributed to early-stage development and integration efforts in an embedded/industrial context.

Systems Analyst at GCF Systems, Recife - PE, Brazil

December 1, 2008 - June 1, 2010

Systems analyst focusing on requirements elicitation, analysis, and validation; documented final-use scenarios and supported handover to development teams.