Hi, I'm Joaquim Costa
Junior Software Developer
I’m an entry-level Software Developer with a passion for building practical and creative projects that solve real-world problems. I enjoy contributing to open-source communities where I can learn from others and give back through code.
About
I am an IT professional excelling in customer service, technical support, and junior software development, driven by a passion for solving challenges. I bring to life innovative projects like a personal portfolio website and engaging applications, reflecting my creative and technical skills. Actively contributing to open-source initiatives on GitHub, I collaborate globally and enhance my expertise. As a dedicated, communicative, and highly collaborative individual, I thrive in dynamic team settings and am committed to making a positive impact.
Experience
GitHub Community
Open Source Contributor
Part-time · June 2024 - Present
Remote
- Collaborated with global developer communities on GitHub, contributing to high-profile open-source organizations including Microsoft, and CS50, enhancing web development and educational tools.
- Documented code improvements and fixed bugs in freeCodeCamp's curriculum repositories, supporting millions of learners worldwide in acquiring programming skills.
- Participated in issue triage and pull request reviews for roadmap.sh projects, improving platform accessibility and government digital services.
- Developed features and resolved UI/UX issues for creative tools in Hundred Rabbits repositories, fostering innovative open-source design solutions.
FreeCodeCamp
Open Source Contributor
Part-time · Jan 2024 - Present
Remote
- Contributed to curriculum development by creating and refining coding challenges in JavaScript, HTML, and CSS, enhancing the learning experience for millions of users.
- Collaborated with the community to identify and fix bugs in existing lessons, improving clarity and functionality.
- Participated in code reviews and discussions to ensure high-quality contributions aligned with FreeCodeCamp's educational goals.
- Engaged with learners on forums to provide support and guidance, fostering a collaborative learning environment.
StaffSmiths
Technical Support Specialist
Full-time · Sep 2024 - Present
City of Cape Town, Western Cape, South Africa · Remote
- Provided advanced technical support via Zendesk Support & Chat for iOS, Android and web apps.
- Used Zendesk macros, triggers, views and SLAs to achieve 2h first response and 12h resolution times.
- Guided customers through advanced troubleshooting steps (cache clear, permissions, VPN, fallback uploads).
- Ensured full GDPR compliance when handling customer data in Zendesk.
BestService
Customer Support Specialist
Full-time · Jan 2023 - April 2024 · 1 yr
City of Cape Town, Western Cape, South Africa · Remote
- Delivered first-line support via Zendesk, Gorgias, email, in-app chat and social media with 94%+ CSAT and 4h response times.
- Collaborated with warehouse, logistics partners (Royal Mail, DPD, UPS) and Product teams to resolve order-specific problems.
- Processed replacement orders, discount codes and goodwill gestures to maximise customer retention.
- Resolved escalated issues including delayed/damaged orders, refunds and reprints while maintaining empathetic brand tone.
Convio
Customer Service Representative
Full-time · Fev 2020 - April 2021 · 1 yr 2 mos
Cape Town, Western Cape, South Africa · On-site
- Use a deeper understanding of the product or service to troubleshoot issues and assist agents in resolving customer problems
- Take ownership of cases that cannot be resolved by agents, handling more technical, complex, or sensitive issues
- Collaborate with other teams and departments to address issues that require in-depth technical expertise or feature adjustments.
- Delivered high-quality customer support through various channels, including live chat, email, and phone, handling inquiries about game rules, account issues, and bonus offers.
Education
University Education
- Advance Diploma: Business Management
- University: Zetaweb Institute
- Gradution Year: 2020
I excel at developing and implementing effective business strategies. I'm adept at market analysis, process improvement, and leading teams to achieve measurable results.
Download CertificateProfessional Certifications
- Certification Name:Oracle Autonomous Database Cloud 2025 Certified Professional
- Issuing Organization: Oracle
- Completion Date: 2025
Completed comprehensive with knowledge in building, training, deploying, manage, monitor, and migrate workloads to Autonomous Database, both on shared and dedicated Exadata infrastructure.
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- Certification Name: IT Professional
- Issuing Organization: Optimi College
- Completion Date: 2025
Completed a comprehensive online course covering foundational IT skills, including networking, cybersecurity, and server administration, with a focus on preparing for industry certifications from CompTIA, Cisco, and Microsoft.
Download CertificatePackages Of Certificates
- Certificates Name: LinkedIn
- Issuing Organization: LinkedIn Learning
This file contains certificates of course completion for professional development courses successfully completed by me on the LinkedIn Learning platform.
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- Certificates Name:IBM-Skillsbuild
- Issuing Organization: IBM
This file is dedicated to storing digital credentials and certificates earned through IBM SkillsBuild, a program offering free skills-based learning. Each completed course or learning plan will have its own file to document the achievement.
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- Certificates Name: Oracle Mylearn
- Issuing Organization: Oracle
This file contains verified records of the Oracle certifications and related examination score reports for my enrolled. All documents are official and were issued by the Oracle Certification Program, a part of Oracle University.
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- Certificates Name: Internship Virtual Accomplishment and Certificate
- Issuing Organization: Forage
This file serves as a portfolio to document and showcase the job simulations I have completed on the Forage platform. Each simulation is designed to provide practical, on-the-job experience and help me develop key skills in a professional environment.
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- Certificates Name: FreeCodeCamp Master
- Issuing Organization: FreeCodeCamp
This file serves as a portfolio to document and showcase the job simulations I have completed on the FreeCodeCamp platform, such as 📜 Certifications, 🧪 Projects, 📝 Assignments, 🏆 Achievements, 📂 Daily Challenges and 📚 Notes and Resources.
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- Certificates Name: Zendesk Specialist Certification Bundle
- Issuing Organization: Zendesk
This repository serves as an official portfolio to document and showcase my completed Zendesk Training certifications issued by Zendesk Training (Zendesk University partner). All certificates are 100% official, publicly verifiable via Skilljar, and include QR codes for instant validation.
Download CertificateSkills
My journey as a developer and IT professional has allowed me to build a versatile set of skills. Here's a look at my technical expertise and soft skills, covering Front-End Development, IT Service & Networking, Tools & Technologies, and Soft Skills.
Front-End Development
HTML5
Crafting the structure of web pages with semantic markup.
CSS3
Designing modern, responsive layouts using Flexbox and Grid.
JavaScript
Building dynamic and interactive front-end user experiences.
Tailwind CSS
Creating clean, utility-first designs for faster development.
Responsive Design
Ensuring websites look great on any device or screen size.
IT Service & Networking
Hardware & Software Troubleshooting
Diagnosing and fixing technical issues quickly and efficiently.
Mobile Device Configuration & Support
Providing seamless setup and support for mobile devices.
Networking Fundamentals
Understanding and applying core networking concepts.
Operating Systems
Proficient with Windows, Linux, and macOS administration.
Tools & Technologies
Git & GitHub
Using version control for collaborative development.
Command Line
Executing tasks efficiently through the command-line interface.
npm
Managing packages and dependencies in JavaScript projects.
VS Code
Using the code editor for a productive development workflow.
Soft Skills
Problem-Solving
Successfully diagnosed and resolved complex bugs in code.
Perseverance & Grit
Worked through challenging projects with resilience.
Time Management
Effectively managed a self-paced learning schedule.
Attention to Detail
Wrote clean, well-documented code with meticulous review.
Projects
A selection of projects I've built to apply my skills and solve real-world problems.
Portfolio Website
Developed a dynamic and responsive personal portfolio website to showcase projects, skills, professional experience, and contact information. Implemented smooth scrolling navigation, an animated typing effect, and a scroll-to-top button to enhance user experience.
AutoExchange Website
Developed a responsive static website inspired by AutoTrader, designed as a conceptual prototype for a car marketplace platform tailored to the South African market. features an intuitive user interface with dynamic functionalities, showcasing expertise in front-end web development and a focus on delivering market-specific digital solutions.
Digital Clock
A simple digital clock built using HTML, CSS, and JavaScript. The clock updates every second and shows the current local time in real-time.
Contact Me
I'm always open to new opportunities, collaborations, and conversations. Feel free to reach out to me using the form below or connect with me on social media.