Marcelus Trojahn
Porto Metropolitan Area Portugal
Summary
👤
Senior🎓
Top SchoolMarcelus Trojahn is a seasoned software engineer based in the Porto Metropolitan Area with 10 years of experience building backend and full-stack systems across telecom, startups, and small businesses. He brings hands-on expertise in agile practices (Scrum, Kanban, XP) and a history of owning projects and teams—from founding small ventures to managing network operations and automation for large-scale BGP/OSPF infrastructures. Recent roles focus on backend engineering and cloud communications at Cloud5, backed by prior ETL and full-stack work that demonstrates comfort with data pipelines and end-to-end delivery. Marcelus pairs infrastructure-level networking know-how with application development, enabling efficient integrations between network services and business applications. Colleagues rely on him to translate complex operational requirements into maintainable software and automation.
10 years of coding experience
17 years of employment as a software developer
Other
English, Portuguese, Italian
Stackoverflow
699reputation
82kreached
22answers
16questions
Github Skills (31)
vaadin9
spring-boot8
spring-integration8
web-application8
snmp7
laravel7
java7
php7
spring7
network6
dependency-injection6
ktor6
base646
vuetify6
kotlin6
Programming languages (8)
Github contributions (5)
mtrojahn/recruiting-challenge-02
Oct 2019 - Nov 2021
A TODO list app sample. This is a sample for a recruitment process. Backend was done with Python with Flask and SQLAlchemy. Frontend was done with Vuejs.
Contributions:17 PRs, 24 pushes, 18 branches in 2 years
todorecruitment-processpythonsqlalchemybackend-process
mtrojahn/mtrojahn
Jan 2023 - Mar 2026
Contributions:63 pushes, 4 branches in 3 years 2 months
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