Filip Aleksić
Senior Software Engineer at Userlane
Zadar, Croatia
Summary
👤
Senior🎓
Top SchoolFilip Aleksić is a Senior Software Engineer with a decade of experience building and improving backend systems across startups and scale-ups from Zadar, Croatia. He excels at turning messy, hard-to-maintain architectures into pragmatic, maintainable services—recently leading a migration from a complex Node.js job system to a Go/Asynq-based background processing platform at Userlane. His background spans security-focused tooling and large-scale data collection (ReversingLabs), mobile game injection for recording (PlaytestCloud), and HubSpot integrations that streamlined onboarding (Mailtastic/Cognism), giving him a rare mix of operational, integration, and platform engineering skills. Comfortable across Python, Ruby on Rails, Node.js, PHP and Go, he pairs hands-on coding with thoughtful architectural decisions and developer-first tooling. An open-source contributor, he added Google Safe Browsing integration to the popular SpiderFoot OSINT project, reflecting an interest in security and threat intelligence beyond his day job. Filip focuses on solutions that are easy for teams to own long-term, preferring deep problem understanding over flashy tech choices.
10 years of coding experience
6 years of employment as a software developer
Gimnazija Jurja BarakovićaBachelor of Science - BS, Information Technology, Bachelor of Science - BS, Information Technology at Faculty of Organization and Informatics
Croatian, English
Stackoverflow
172reputation
8kreached
6answers
4questions
Github Skills (14)
apim10
api10
osi10
python10
threat-intelligence9
cybersecurity9
html6
javascript6
android6
loops6
multithreading6
angular6
ng-bootstrap6
java6
Programming languages (5)
Github contributions (5)
smicallef/spiderfoot
Aug 2020 - Sep 2020
SpiderFoot automates OSINT for threat intelligence and mapping your attack surface.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 reviews, 18 commits, 6 PRs in 26 days
Contributions summary:Filip primarily contributed to the development of a new module (`sfp_googlesafebrowsing.py`) for the SpiderFoot project, integrating Google Safe Browsing API functionality. This involved writing Python code to interact with the API, parse responses, and produce events based on the results. Further commits focused on correcting module errors and integrating changes from the main project branch.
pythonbugbountyautomatesctipentest
faleksic/spiderfoot
Aug 2020 - Sep 2020
SpiderFoot automates OSINT collection so that you can focus on analysis.
Contributions:16 pushes, 4 branches in 25 days
information-gatheringpythonbugbountyautomatespentesting
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