Isiah Christian S.
Application Systems Developer
I am a Software Engineer with nearly more than 5 years of professional experience, primarily working with Java EE, JSP, PostgreSQL, MySQL, and Oracle 19c. Throughout my career, I have developed and maintained enterprise applications while gaining experience in database design, backend development, and system support. In addition to my core expertise, I have working knowledge of HTML, CSS, Bootstrap, basic JavaScript, ReactJS, WordPress (Divi), and Adobe Photoshop, allowing me to contribute to both technical and user-facing aspects of web development. I am currently focused on expanding my skills in Python, with the goal of developing automation solutions for repetitive tasks, advancing into data science, and building expertise in cybersecurity. Beyond software development, I am also a duly licensed Electronics Engineer (ECE) and Electronics Technician (ECT), having successfully passed the board examinations. My combination of software engineering experience, database expertise, web development knowledge, and engineering credentials enables me to approach complex technical challenges from both software and electronics perspectives while continuously pursuing opportunities for growth and innovation.
Earnings and projects
Last 6 months ÷ 5.1 months active (since Jun 2026)
Last 6 months: $4.9k
Billed in all: $5,233$5.2k
$4.9k in the last 6 months
Earnings, last 30 days
Skill rankings: Top 9% in Bootstrap
Ranked by MRR among everyone on Upwork with the skill.
- #46Microsoft Visual Studio418 freelancers · 🇵🇭 #7Top 11%🇵🇭#7 of 43
- #590Bootstrap6,899 freelancers · 🇵🇭 #27Top 9%🇵🇭#27 of 216
- #850Java8,313 freelancers · 🇵🇭 #25Top 10%🇵🇭#25 of 209
- #894CSS 39,914 freelancers · 🇵🇭 #43Top 9%🇵🇭#43 of 317
- #1,395HTML514,581 freelancers · 🇵🇭 #66Top 10%🇵🇭#66 of 485
- #1,524MySQL14,471 freelancers · 🇵🇭 #48Top 11%🇵🇭#48 of 419
- #2,080PostgreSQL12,850 freelancers · 🇵🇭 #27Top 16%🇵🇭#27 of 175
- #3,406Adobe Photoshop39,405 freelancers · 🇵🇭 #560Top 9%🇵🇭#560 of 4,768