Mark Joseph Zaballero Estareja

[email protected] • +639296293786 • #2228 Malaya St. Balut, Tondo, Manila

PROFESSIONAL SUMMARY

To enhance my career as a Software Engineer by applying my experience in full-stack development, collaborating with cross-functional teams, and continuously expanding my technical and professional skills.

WORK EXPERIENCE

Freelance Full Stack Web Developer
04/2025 - 06/2025
Self Employed
• Designed and developed responsive, user-focused websites and web applications for diverse clients
• Built and customized WordPress themes and plugins, ensuring high performance and SEO optimization
• Developed dynamic front-end interfaces using React, Vue, and Angular integrated with RESTful APIs
• Created secure and efficient Node.js/Express backends with optimized MySQL databases
• Deployed and maintained applications on AWS, implementing CI/CD and version control best practices
• Translated Figma designs into interactive, cross-browser, and mobile-friendly web solutions
• Integrated analytics, payment gateways, and third-party APIs to enhance functionality
Senior Full Stack Developer
02/2024 - 03/2025
Prudential Singapore (One North Consulting Pte Ltd) , Remote
• Led the design and development of applications, ensuring alignment with business goals and user requirements
• Acted as technical lead, mentoring developers and overseeing code quality through reviews
• Designed complex workflows, data models, and distributed systems with seamless front-end and back-end integration
• Developed and optimized REST APIs, integrated third-party services such as payment gateways and insurance data providers
• Built responsive, accessible interfaces using modern frameworks
• Maintained clear documentation for systems, APIs, and workflows
Software Engineer L2
04/2024 - 07/2024
PayMaya/Maya Bank Inc (Project Based)
• Designed, developed, and tested core credit card system features, including transaction processing and billing
• Wrote modular, reusable code for payment authorization, settlement, and reversals
• Performed unit, integration, and end-to-end testing to ensure reliability and compliance with banking standards
• Diagnosed and resolved production issues under tight deadlines
• Collaborated with QA, DevOps, and product teams in Agile/Scrum environments to deliver robust solutions
Packaged App Development Senior Analyst
05/2023 - 12/2023
Accenture Inc.
• Designed, built, and configured applications aligned with business processes and client requirements
• Collaborated with clients through demos and consultations to ensure technical solutions met business needs
• Developed and optimized ETL processes and managed Teradata databases for improved performance
• Implemented CI/CD pipelines and applied DevOps best practices to streamline delivery
• Participated in Agile and Scrum workflows, code reviews, and performance testing
• Created and maintained detailed documentation for databases, configurations, and processes
• Utilized advanced Excel skills for data analysis, reporting, and process optimization
IT Instructor
10/2023 - 12/2023
PHINMA Saint Jude College (Part Time)
• Facilitated lessons using Agile and Scrum principles to enhance learning and collaboration
• Delivered instruction based on approved curricula, developing daily lesson plans, activities, and assessments
• Monitored and documented student attendance, behavior, and academic progress
• Provided academic support and advising to ensure student success
• Maintained up-to-date knowledge in assigned subjects to deliver relevant examples and insights
• Guided students in developing end-of-year projects aligned with the creative coding curriculum
Senior Application Development Analyst
01/2022 - 05/2023
Accenture Inc.
• Developed, tested, and maintained efficient, well-designed code following best software practices
• Collaborated with clients and cross-functional teams to gather requirements and deliver solutions on time
• Designed, built, and optimized applications, databases, and ETL processes
• Created and maintained comprehensive technical and process documentation
• Implemented CI/CD and DevOps practices to improve deployment efficiency
• Mentored new team members and ensured adherence to development standards
• Supported daily operations by applying code fixes and deploying reports, code reviews, and performance testing
Software Developer
10/2021 - 12/2021
Trend Micro (Project Based)
• Implemented and maintained automated tests using Junit
• Contributed to enhancing test automation frameworks for functional and system test cases
• Optimized API response time and reduced latency by implementing caching strategies and asynchronous processing using FastAPI and Golang
• Built dynamic interactive user interface using ReactJS and VueJS, ensuring seamless user experience and responsiveness
Freelance Full Stack Web Developer
01/2017 - 10/2021
AMRI Web Portal Services Corporation - IT Service
• Designed and developed responsive website layouts and user interfaces using HTML, CSS, and standard web practices
• Integrated data from back-end services and databases to enhance functionality
• Built and configured applications aligned with business and technical requirements
• Participated in code reviews and implemented CI/CD and DevOps best practices
• Conducted performance testing and optimized software for efficiency
• Created and maintained comprehensive technical and process documentation
Freelance Android Developer/Game Developer
06/2015 - 10/2021
Self Employed
• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes
• Designing, building, and maintaining high performance, reusable, and reliable Java codes

EDUCATION

Bachelor of Science in Information Technology
STI College Sta.Mesa , Sta.Mesa, Manila
Timoteo Paez Integrated High School , Younger St. Balut, Tondo, Manila

SKILLS

CERTIFICATIONS

VMWare Spring Certification
09/2023
Accenture Inc.
Business Trip/Internal Project Training
01/2023
Accenture Singapore