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I am Mark Ariel Tolentino, a seasoned IT professional with over 12 years as an Application Systems Engineer and a track record of leading and mentoring development teams to deliver robust, scalable solutions. I specialize in designing scalable architectures, driving end-to-end delivery, and ensuring projects meet quality standards and timelines. I thrive in fast-paced environments, excel at cross-functional collaboration, and am committed to continuous improvement, automation, and customer satisfaction through clear documentation and proactive problem-solving.…I am Mark Ariel Tolentino, a seasoned IT professional with over 12 years as an Application Systems Engineer and a track record of leading and mentoring development teams to deliver robust, scalable solutions. I specialize in designing scalable architectures, driving end-to-end delivery, and ensuring projects meet quality standards and timelines. I thrive in fast-paced environments, excel at cross-functional collaboration, and am committed to continuous improvement, automation, and customer satisfaction through clear documentation and proactive problem-solving.

Mark Ariel R. Tolentino

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

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I am Mark Ariel Tolentino, a seasoned IT professional with over 12 years as an Application Systems Engineer and a track record of leading and mentoring development teams to deliver robust, scalable solutions. I specialize in designing scalable architectures, driving end-to-end delivery, and ensuring projects meet quality standards and timelines. I thrive in fast-paced environments, excel at cross-functional collaboration, and am committed to continuous improvement, automation, and customer satisfaction through clear documentation and proactive problem-solving.…I am Mark Ariel Tolentino, a seasoned IT professional with over 12 years as an Application Systems Engineer and a track record of leading and mentoring development teams to deliver robust, scalable solutions. I specialize in designing scalable architectures, driving end-to-end delivery, and ensuring projects meet quality standards and timelines. I thrive in fast-paced environments, excel at cross-functional collaboration, and am committed to continuous improvement, automation, and customer satisfaction through clear documentation and proactive problem-solving.

Available to hire

I am Mark Ariel Tolentino, a seasoned IT professional with over 12 years as an Application Systems Engineer and a track record of leading and mentoring development teams to deliver robust, scalable solutions. I specialize in designing scalable architectures, driving end-to-end delivery, and ensuring projects meet quality standards and timelines. I thrive in fast-paced environments, excel at cross-functional collaboration, and am committed to continuous improvement, automation, and customer satisfaction through clear documentation and proactive problem-solving.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

IT Team Lead / Sr. Application Systems Engineer / Consultant at Fujitsu Philippines

January 1, 2022 - November 4, 2025

Led development initiatives, ensured 100% compliance with defined productivity and development rules; designed scalable system architectures and application solutions; spearheaded development, testing, and deployment; mentored junior developers; produced high-quality technical documentation; conducted peer reviews and presentations; managed bug fixes, enhancements, and change requests; owned team initiatives and process improvements to ensure customer satisfaction and service continuity.

Programmer Analyst III at Vertere Global Solutions Inc.

December 1, 2021 - December 1, 2021

Developed automation tools including Robotic Process Automation (RPA); provided tier-2 production support; managed timelines and deliverables; authored reports and manuals; supported and maintained production robots; extracted and analyzed large data sets using SQL based on BU requirements.

Senior Software Developer at Sandman System Software Inc.

August 1, 2019 - August 1, 2019

Led technical support operations; designed and developed customized sales and inventory reporting systems; developed SMS-based monitoring systems and web-based masterlist management platforms; maintained and optimized business process automation tools; mentored junior developers; collaborated with clients and stakeholders to refine requirements.

Data Encoder at Accupoll Inc.

May 1, 2014 - May 1, 2014

Encoded survey responses into digital datasets; reviewed incoming materials for classification; identified inconsistencies for quality assurance; organized physical and electronic records for efficient retrieval; maintained confidentiality and data accuracy.

Junior Programmer at Lexsys Technologies Inc.

December 1, 2014 - December 1, 2014

Developed customized software applications to automate core government functions, including accounting, treasury, and permit processing; designed and implemented a Hospital Information System; installed and configured LANs; provided frontline technical support; analyzed, tested, and resolved system issues.