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Nikola Čubelić
Curriculum vitae

Nikola Čubelić

Software Engineer · Founder of Lion Code

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Summary

Software engineer with 13+ years of experience, iOS-first. I've been building for Apple platforms since 2014 and ship my own apps on the App Store. Around mobile I build what a product needs: web frontends in Next.js, backends in Django and Java, payment integrations and the occasional piece of hardware. Since 2016 I run Lion Code, a one-person studio where clients work directly with the engineer who builds their software.

Experience

  1. 2016 - present

    Founder & Software Engineer

    Lion Code d.o.o.

    • Design, build and ship iOS apps, web applications and backends for clients in fintech, retail, aviation, hospitality and transport.
    • Own products on the App Store: SmartBox, Biblijske Priče, KidRun and Kada ide smeće?
    • Long-term maintenance and support - FoodSafe has been in production since 2017.
    • IoT and hardware side projects: ESP32 controllers with BLE iOS apps, MIDI-triggered stage effects.
  2. 2015 - 2016

    Business Solution Consultant

    TIS objektni informacijski sustavi d.o.o.

    • Member of an agile team covering the full development lifecycle for financial institutions.
    • Business analysis, system architecture and implementation of payment solutions.
  3. 2013 - 2015

    Junior Java Developer

    Zagrebačka banka d.d. (UniCredit Group)

    • Developed and maintained Java applications and services for internal and external banking operations.
    • Worked with cross-functional teams on functionality, security and regulatory compliance of backend services.
  4. 2012 - present

    Software Developer (volunteer)

    Plavi telefon

    • Migrated a Microsoft Access database to MySQL and built the call center application on top of it.
    • Used daily by helpline volunteers for over a decade.

Selected projects

KidRun

own product

Kids activity calendar and pickup planner shared between parents. Live Activities and widgets.

Kada ide smeće?

own product

Waste collection calendar with day-before reminders and an App Clip.

SmartBox

own product

Storage box organizer with QR labels, local-first with iCloud sync.

Biblijske Priče

own product

Audio Bible stories for children on iOS and Android.

Ledolu

2024

Business management for bus fleet operators: orders, scheduling, driver availability. Next.js and Django REST.

Genius

2024

InterCapital's robo-advisor: automated ETF investing with a personalized plan.

MyCapital

2023

Independent investing in InterCapital Asset Management funds.

Icarus SMS

2022

Aviation safety and compliance management, built for iPad and cockpit use.

Konzum klik

client work

Online grocery shopping for Croatia's largest retail chain.

Neostar

2019

Buying, selling and servicing vehicles: listings, test drives, maintenance appointments.

RoomOrders

2018

Contactless ordering system for the hospitality industry.

BBC Pandemic

2017

Nationwide citizen science experiment modelling the spread of a flu outbreak across the UK.

More on the work section of the site.