Mikael Lepistö - Software Engineer Full Stack From Bare Metal To Cloud at Self Employed

Mikael Lepistö

Self Employed

Tampere, Pirkanmaa, Finland

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Summary

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Rockstar

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Top School

Mikael Lepistö is a versatile full-stack software engineer with 14+ years of experience building systems "from bare metal to cloud"—from assembler and embedded toolchains to web backends and cloud devops. Based in Tampere, Finland, he combines deep compiler and LLVM work from his research background with pragmatic production engineering demonstrated at Vincit and as an independent consultant. Mikael is an active open-source contributor, having improved cross-platform build systems for pocl (Portable Computing Language) and enhanced SQL tooling and testing in Knex and Objection.js. He excels at making complex build and test infrastructures robust and portable, and often bridges gaps between low-level platform constraints and high-level developer ergonomics. A detail-oriented technical writer and architect, he also brings uncommon breadth: decades of hands-on assembler-to-JavaScript coding that informs his practical, long-term solutions.

14 years of coding experience

20 years of employment as a software developer

Master's degree, Software production, Master's degree, Software production at Tampereen teknillinen korkeakoulu

Finnish, English, Spanish

Stackoverflow

Stats

19,338reputation

4.2mreached

498answers

4questions

Badges

sql

top-5%

spring

top-5%

java

top-5%

orm

top-5%

mysql

top-1%

javascript

top-5%

Github Skills (40)

json10

opencl10

javascript10

postgresql10

multiplatform10

mysql10

llvm10

testing10

build-system10

cross-platform10

cmake10

knx10

sql10

nodejs10

clangd10

Programming languages (11)

TypeScriptShellC++MojoCJavaScriptVueGo

Github contributions (5)

knex/documentation

Sep 2016 - Feb 2019

Knex Documentation Builder (Moved to https://github.com/knex/knex)

Role in this project:

Technical Writer

Contributions:1 review, 39 commits, 101 PRs in 2 years 5 months

Contributions summary:Mikael's contributions primarily involve updating and expanding the documentation for the Knex.js library. This includes adding examples, clarifying configurations for specific features like `afterCreate` pool configuration, and documenting new features such as `toSQL().toNative()`. The user also addressed typos and inconsistencies in the documentation, improving its clarity and usability for developers. The user is responsible for documenting features and usage.

jsdocdocumentation-builderdocumentation-generatorbuilderknex

knex/knex

Aug 2015 - May 2019

A query builder for PostgreSQL, MySQL, CockroachDB, SQL Server, SQLite3 and Oracle, designed to be flexible, portable, and fun to use.

Role in this project:

Back-end Developer

Contributions:18 reviews, 151 commits, 378 PRs in 3 years 9 months

Contributions summary:Mikael primarily contributed to the Knex.js query builder, focusing on enhancing its PostgreSQL dialect. Their work included implementing an escape sequence for the `?` operator within PostgreSQL raw queries and adding documentation to explain its usage. They also addressed a bug by adding the functionality to the postgres dialect to use a raw expression with question mark syntax. Additionally, they made build-related changes.

sql-serverjavascriptsqlite3sqlitedatabase

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