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Hello! I’m a software developer with over 6 years of experience building frontend, backend, and full-stack solutions across diverse industries. I’ve taken on roles from developer to technical lead, and most recently worked on the Exercises Creator project for Santander Bank, where I helped improve platform performance and user experience. I enjoy transforming complex problems into clean, reusable components and robust APIs, while collaborating with cross-functional teams and mentoring peers. I’m passionate about learning new technologies and applying best practices to deliver high-quality software. I thrive in fast-paced environments and enjoy turning ideas into tangible, measurable results.…Hello! I’m a software developer with over 6 years of experience building frontend, backend, and full-stack solutions across diverse industries. I’ve taken on roles from developer to technical lead, and most recently worked on the Exercises Creator project for Santander Bank, where I helped improve platform performance and user experience. I enjoy transforming complex problems into clean, reusable components and robust APIs, while collaborating with cross-functional teams and mentoring peers. I’m passionate about learning new technologies and applying best practices to deliver high-quality software. I thrive in fast-paced environments and enjoy turning ideas into tangible, measurable results.

Luis Jesús Miranda Geldres

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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Hello! I’m a software developer with over 6 years of experience building frontend, backend, and full-stack solutions across diverse industries. I’ve taken on roles from developer to technical lead, and most recently worked on the Exercises Creator project for Santander Bank, where I helped improve platform performance and user experience. I enjoy transforming complex problems into clean, reusable components and robust APIs, while collaborating with cross-functional teams and mentoring peers. I’m passionate about learning new technologies and applying best practices to deliver high-quality software. I thrive in fast-paced environments and enjoy turning ideas into tangible, measurable results.…Hello! I’m a software developer with over 6 years of experience building frontend, backend, and full-stack solutions across diverse industries. I’ve taken on roles from developer to technical lead, and most recently worked on the Exercises Creator project for Santander Bank, where I helped improve platform performance and user experience. I enjoy transforming complex problems into clean, reusable components and robust APIs, while collaborating with cross-functional teams and mentoring peers. I’m passionate about learning new technologies and applying best practices to deliver high-quality software. I thrive in fast-paced environments and enjoy turning ideas into tangible, measurable results.

Available to hire

Hello! I’m a software developer with over 6 years of experience building frontend, backend, and full-stack solutions across diverse industries. I’ve taken on roles from developer to technical lead, and most recently worked on the Exercises Creator project for Santander Bank, where I helped improve platform performance and user experience. I enjoy transforming complex problems into clean, reusable components and robust APIs, while collaborating with cross-functional teams and mentoring peers.

I’m passionate about learning new technologies and applying best practices to deliver high-quality software. I thrive in fast-paced environments and enjoy turning ideas into tangible, measurable results.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Work Experience

Full Stack Developer at Open Systems - Santander Bank Spain

July 1, 2022 - Present

Led efforts to move historical pending issues to zero. Built reusable UI elements (table, pager, input, button, select, list), doubling the speed of creating new views. Worked with frontend and backend technologies including Jira, Azure Functions, Git, GitLab Merge Requests, GitHub Pull Requests, TypeScript, Angular 10-18, HTML, SCSS, JavaScript, Node, Express, and Snowflake SQL.

Full Stack Developer at Fitech Falabella (Image Maker) / Falabella

September 1, 2021 - July 1, 2022

Improved the platform used by clients and executives of the bank by resolving incidents of all priority types; Implemented new features on the platform. Used frontend and backend technologies: TypeScript, Angular 9, HTML, CSS, JavaScript, Node, Express; also Angular 9, Ionic 4. Tools included Git, Kibana, Jira, Confluence, Trello, GitLab CI/CD. Backend with .NET Core Web API, C#, MongoDB, SQL Server; Azure DevOps (Repos, Pipelines, Releases).

Full Stack Developer at Adaptativamente

January 1, 2019 - September 1, 2021

Led the 'Exercises Creator' project, a platform enabling interactive math exercises for elementary and middle school students, successfully replacing the old platform. Participated in development and support of platforms for Students, Teachers, Admin, and Reporting. Developed the Students mobile applications. Technologies used include Azure DevOps (Repos, Pipelines, Releases), Git, Agile, Scrum, Jira, Confluence, Trello, GitLab CI/CD, TypeScript, Angular 7-11, Ionic 4, HTML, CSS, JavaScript, Node, Express, Hapi, C#, .NET Core Web API, MongoDB, and SQL Server.

Frontend and Backend Developer at Haibu Solutions - VTR

January 1, 2018 - December 1, 2018

Contributed to the Ionic framework platform update from version 1 to 3 and 4 in the Client application. Also developed backend using the Backend-for-Frontend (BFF) pattern. Participated in the development and support of mobile applications for Clients, Technicians, and Sales. Used Git, Kibana, Agile, Jira, Confluence, Trello, GitLab CI/CD, TypeScript, Angular 9, HTML, CSS, JavaScript, Node, and Express.

FullStack Developer at Open Sistemas - Santander Bank Spain

July 1, 2022 - Present

Remote frontend/backend development for Santander Bank Spain; led a team to reduce historic pending issues to 0; built reusable UI elements (table, pager, input, button, select, list), doubling the speed of creating new views; technologies used include Jira, Azure Functions, Git, GitLab Merge Requests, GitHub Pull Requests, TypeScript, Angular 10-18, HTML, SCSS, JavaScript, Node, Express and Snowflake SQL.

FullStack Developer at Falabella FinTech (Remote)

September 1, 2021 - July 1, 2022

Remote role focusing on improving platform usage for clients and executives; resolved incidents of all priority types; implemented new features on the platform; used Git, Kibana, Agile, JIRA, Confluence, Trello, GitLab CI/CD, TypeScript, Angular 9, HTML, SCSS, JavaScript, Node and Express.

FullStack Developer at Adaptiveamente

January 1, 2019 - September 1, 2021

Led the 'Exercises Creator' project, a platform for creating interactive math exercises for elementary and middle school students, successfully replacing the old platform; participated in development and support of the Students, Teachers, Admin and Reporting modules; developed the Students mobile applications; used Azure DevOps (Repos, Pipelines and Releases), Git, Agile, Scrum, Jira, Confluence, TypeScript, Angular 7-11, Ionic 4, HTML, CSS, SCSS, JavaScript, Node, Express, Hapi, C#, .NET Core Web API, MongoDB and SQL Server.

Frontend and Backend Developer at Haibu Solutions - VTR Chile

January 1, 2018 - December 1, 2018

Contributed to version updates of the Ionic framework from v1 to v3 and v4 in the client’s application; backend development using the BFF (Backend for Frontend) pattern; participated in the development and support of mobile applications for Clients, Technicians and Sales; used Git, Agile, Scrum, Trello, Jira, TypeScript, AngularJS, Angular 7, Ionic 1-4, HTML, CSS, SASS, JavaScript and Node.