Daniel Marvin F.
Delphi Expert/Developer
With over 40 years of software development experience and three decades dedicated to Delphi, I bring deep expertise and proven results to every project. Certified in Delphi by Embarcadero Academy, I have worked with every version of the language, designing, developing, and supporting complex applications across industries. My track record includes rescuing failing projects, modernizing legacy systems, and ensuring long-term stability by addressing technical debt, performance bottlenecks, and memory leaks. I am highly skilled in working with third-party component systems such as DevExpress, TMS, Woll2Woll, and n software, and I excel at quickly understanding complex code bases. My database experience spans MS SQL, MySQL, Oracle, Interbase, and more, giving me the versatility to integrate and optimize applications across diverse environments. Having led multiple Delphi teams, I combine strong technical leadership with a hands-on approach. I am known for working independently with minimal supervision, while also asking the right questions and seeking resources to ensure success. Whether building new solutions or revitalizing existing ones, I deliver reliable, efficient, and future-ready results.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $30k
Billed in all: $49,449$49k
$30k in the last 6 months
Across 3 contracts
Earnings, last 30 days
Skill rankings: #1 in 1 skill of 7
Rarest: top 1% in Wix, of 4,075. Ranked by MRR among everyone on Upwork with the skill.
- Pascal25 freelancers · 🇺🇸 #1Top 4%🇺🇸#1 of 3
- #5Delphi130 freelancers · 🇺🇸 #3Top 4%🇺🇸#3 of 17
- #16Web Service559 freelancers · 🇺🇸 #5Top 3%🇺🇸#5 of 50
- #31Mailchimp2,594 freelancers · 🇺🇸 #14Top 1%🇺🇸#14 of 513
- #44Wix4,075 freelancers · 🇺🇸 #20Top 1%🇺🇸#20 of 728
- #62Database Design2,161 freelancers · 🇺🇸 #22Top 3%🇺🇸#22 of 296
- #80App Development2,592 freelancers · 🇺🇸 #28Top 3%🇺🇸#28 of 297