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Hi, I'm Karim Hussen Patatas Hassam dos Santos, a full-stack developer based in Golães, Fafe, Portugal. I'm driven by a constant desire to learn, evolve, and push my own boundaries every day. Beyond technical skills in React Native, Java, Spring/Spring Boot, Linux, and Django, I am deeply committed to continuously expanding my knowledge in system integration, full-stack web development, and the latest practices and architectures. Curious and proactive, I view each project as an opportunity to grow, experiment with new solutions, and contribute to the ongoing improvement of teams and products. This daily learning mindset drives me to adopt an innovative approach, strive for excellence, and create a positive, lasting impact within dynamic and forward-thinking organizations.…Hi, I'm Karim Hussen Patatas Hassam dos Santos, a full-stack developer based in Golães, Fafe, Portugal. I'm driven by a constant desire to learn, evolve, and push my own boundaries every day. Beyond technical skills in React Native, Java, Spring/Spring Boot, Linux, and Django, I am deeply committed to continuously expanding my knowledge in system integration, full-stack web development, and the latest practices and architectures. Curious and proactive, I view each project as an opportunity to grow, experiment with new solutions, and contribute to the ongoing improvement of teams and products. This daily learning mindset drives me to adopt an innovative approach, strive for excellence, and create a positive, lasting impact within dynamic and forward-thinking organizations.

Karim Hussen Patatas Hassam dos Santos

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

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Hi, I'm Karim Hussen Patatas Hassam dos Santos, a full-stack developer based in Golães, Fafe, Portugal. I'm driven by a constant desire to learn, evolve, and push my own boundaries every day. Beyond technical skills in React Native, Java, Spring/Spring Boot, Linux, and Django, I am deeply committed to continuously expanding my knowledge in system integration, full-stack web development, and the latest practices and architectures. Curious and proactive, I view each project as an opportunity to grow, experiment with new solutions, and contribute to the ongoing improvement of teams and products. This daily learning mindset drives me to adopt an innovative approach, strive for excellence, and create a positive, lasting impact within dynamic and forward-thinking organizations.…Hi, I'm Karim Hussen Patatas Hassam dos Santos, a full-stack developer based in Golães, Fafe, Portugal. I'm driven by a constant desire to learn, evolve, and push my own boundaries every day. Beyond technical skills in React Native, Java, Spring/Spring Boot, Linux, and Django, I am deeply committed to continuously expanding my knowledge in system integration, full-stack web development, and the latest practices and architectures. Curious and proactive, I view each project as an opportunity to grow, experiment with new solutions, and contribute to the ongoing improvement of teams and products. This daily learning mindset drives me to adopt an innovative approach, strive for excellence, and create a positive, lasting impact within dynamic and forward-thinking organizations.

Available to hire

Hi, I’m Karim Hussen Patatas Hassam dos Santos, a full-stack developer based in Golães, Fafe, Portugal. I’m driven by a constant desire to learn, evolve, and push my own boundaries every day.

Beyond technical skills in React Native, Java, Spring/Spring Boot, Linux, and Django, I am deeply committed to continuously expanding my knowledge in system integration, full-stack web development, and the latest practices and architectures. Curious and proactive, I view each project as an opportunity to grow, experiment with new solutions, and contribute to the ongoing improvement of teams and products. This daily learning mindset drives me to adopt an innovative approach, strive for excellence, and create a positive, lasting impact within dynamic and forward-thinking organizations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Portuguese

Fluent

English

Fluent

French

Advanced

Work Experience

Full Stack Developer at Randstad Digital

October 1, 2025 - Present

Full-stack development and maintenance for the financial and insurance sector (Société Générale Assurances). Collaborated with functional and technical teams in an international environment. Practiced Agile methods, produced functional documentation, and provided production support.

Fullstack Engineer at Hexa Consulting

March 1, 2025 - October 1, 2025

Consultant for a Deloitte project serving a major Canadian insurance company. Developed and maintained insurance solutions using Guidewire technology.

Full Stack Developer at KPSPORTUGAL

March 1, 2021 - February 28, 2025

Led development of web and mobile solutions for a French-speaking call center; improved customer response times by 35%. Implemented robust back-end APIs with Java (Spring Boot) and Node.js; enhanced front-end with React. Introduced CI/CD with Docker and Kubernetes, reducing deployment time by 50%. Collaborated with cross-functional teams and provided technical guidance in a multilingual environment.

Technical Manager at KPSPORTUGAL

March 1, 2016 - March 31, 2021

Leadership of multidisciplinary teams and operational management of contact center with up to 50 employees. Development of proprietary platform integrating management of towing companies and contact center. Workflow optimization and operational cost reduction. Implementation of web and mobile solutions in Django and React Native. Integration of telephony systems and process automation. Management of Linux infrastructure and networks, ensuring high availability and security.

Application Support Engineer at Natixis

December 1, 2022 - June 30, 2023

Support for critical banking applications (high availability, reliability, financial security). Automation & process monitoring via Java, Shell/Bash; proactive management of critical incidents. Technical troubleshooting, maintenance, and continuous system improvement (various environments). Collaboration with international teams (FR/PT), ticket management (JIRA), technical documentation, workflow optimization.

Operations Coordinator at Randstad

April 1, 2014 - March 31, 2016

Team coordination; monitoring financial and IT KPIs, continuous improvement. Call platform migration, optimization/configuration/testing of business tools.

Project Manager at AcordoTango

July 1, 2012 - April 30, 2014

Implementation of logistics technology systems (mapping, vehicle geolocation). Integration of decision support tools, dedicated user interfaces.

Apple Support Specialist at Apple

January 1, 2018 - December 31, 2020

Specialized technical support for Apple products (iPhone, iPad, Mac, Apple Watch, AirPods). Diagnosis and resolution of hardware and software issues on iOS and macOS devices. Assistance to business customers and end consumers in a multilingual environment. Training and mentoring of new technical support specialists. Collaboration with engineering teams for identification and resolution of critical bugs. Development of technical documentation and troubleshooting guides. Remote and on-site support for Apple device configuration and optimization. Management of complex cases and escalation to specialized teams when necessary.

iOS/MacOS Support – Apple Project at IBM

May 1, 2008 - June 30, 2012

T1/T2 technical support for Apple products (iOS, macOS). Diagnosed incidents and utilized Apple-specific tools; managed tickets with rigorous documentation.