Maciej Jagiełło
Software Developer at Trend Technology S.r.l.
Bagnolo in Piano, Emilia-Romagna, Italy
Summary
👤
Senior🎓
Top SchoolMaciej Jagiełło is a seasoned software developer with over a decade of experience building backend systems and evolving toward full-stack responsibilities while based in Emilia-Romagna, Italy. He cut his teeth on enterprise Java, COBOL and UI work (Swing) and later expanded into mobile, database/server administration and modern web tooling. An active contributor to the Grain language compiler, he has improved standard libraries, optimized memory use, and hardened numeric and string utilities—showing a pragmatic eye for correctness and performance. Comfortable spanning legacy and modern stacks, he combines hands-on bug fixing with design and technology evaluation, often uncovering subtle runtime and encoding issues others miss.
10 years of coding experience
10 years of employment as a software developer
Diploma of Maturity: Qualified Technician in Industrial Electronics and Telecommunications, Electronics and Telecommunications, Diploma of Maturity: Qualified Technician in Industrial Electronics and Telecommunications, Electronics and Telecommunications at I.T.I.S. Leonardo da Vinci di Carpinone, Computer Science, none, Computer Science at University of Modena and Reggio Emilia
Polish, Italian, English, Japanese
Github Skills (16)
compiler10
g10
functional-programming10
compiler-compiler10
webassembly10
rust-wasm10
wasm-pack10
gr10
strings9
text-manipulation9
memory-management9
algorithms8
data-structures8
algorithm8
data-structure8
Programming languages (10)
Github contributions (5)
grain-lang/grain
Jun 2021 - Mar 2022
The Grain compiler toolchain and CLI. Home of the modern web staple. 🌾
Role in this project:
Back-end Developer
Back-end DeveloperContributions:37 reviews, 22 commits, 21 PRs in 9 months
Contributions summary:Maciej primarily focused on improving the Grain language's standard library, addressing bugs and adding new features. They fixed issues in the time module by returning proper values. The user implemented and optimized number utilities, including `isNaN`, `isFinite`, and `isInfinite`. They also worked on memory management by reducing redundant memory loads, along with enhancements to the string module, providing improvements in the string encoding and decoding processes.
grainfunctional-programmingwebassemblytoolchaincompiler
cician/grain-json
May 2021 - Feb 2022
Contributions:69 commits, 57 pushes, 1 branch in 8 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.