I design and engineer whole products, end to end.

Brand, design system, web, native iOS, backend, infrastructure. Two products live, one launching.

Abdullah Kahvecioglu · Lead Design Engineer, DC Development · Belgrade
open to design engineer roles · cv

// 01 · live · for Novi Kvadrat Group DOO

A five-language property platform for Serbia, built end to end.

Marketplaces, business portal, admin console and in-browser floor-plan and 3D studios. Designer and developer in a core team of four since December 2025.Marketplaces, portal, admin and in-browser floor-plan and 3D studios. Designer and developer in a team of four.

277 pages
5 languages
390 migrations · RLS on every table

rent + saleadmin + portal5 languages

a scanned plan goes in. a walkable listing comes out.

open ./novi-kvadrat

// 02 · live · App Store · v1.0.4

A twins-first baby tracker I designed and built, shaped every day by its first real user.

Pregnancy, newborn and postpartum tracking for iPhone, iPad and Apple Watch, in 32 languages.

32 languages
8 Live Activities · 17 widgets
offline-first sync

live activities 8widgets 17sync scenarios 25

start it on one phone. the other one already knows.

open ./probababy

// 03 · IN BUILD · beta November 2026

A B2B sourcing marketplace for Turkish manufacturing, rebuilt as a platform.

As CTO, I’m rebuilding it from a no-code prototype in Go, Next.js and SwiftUI.

145-phase plan · 45 ADRs
556 API operations
4,430 visual baselines

∑ = 0T+1 releasepayout after KYB

money moves when goods do. not before.

open ./sultana-express

// 04 · SHIPPED · Q3 2025 · for Axel Properties

A brand system for a riverside development, from mark to signage.

Logo suite, colour, type, icons and patterns, in guidelines that hold from print to signage. Design Lead, 2025.Logo suite, colour, type, icons and patterns, in guidelines that hold from print to signage.

42 assets
38 guideline sections
15 colours · NCS, RAL, Pantone

symbol + wordmarkNCS · RAL · Pantone3 typefaces

one mark on a grid. every surface follows.

open ./axel-properties

[HOW] the method, not the headline

Products get built in a loop.

Listen, decide, explore, build, prove, run, and listen again. Agents work at four of the seven stations; the call is mine at all of them.

listensignals in
decidemy notes, my call
exploremany, then one
buildagents write the code
provegates, then my eye
runmachines, CI, hosting
listen againreports become plans
back to listenand round again

14 sub-phases on one Saturday
4 directions → 1, after 8 rounds
57,423 tests passing

cd ./method

[CAP] 17, each with its proof

What I do, and where to see it.

design/

engineering/

quality/

leadership/

Technical leadership

cat ./about

[LAB]

Experiments and notes.

ls ./lab

SC Neon Wave Shader
A glowing neon wave.
shadersfx
SC Debug Overlay Pro
Graphs FPS, captures logs.
utilitiesdebug
SC Typewriter Title
Type & erase rotating phrases.
typographymotion

Four platforms in four months

Oct 2026 · 9 mincat ./notes/four-platforms-in-four-months

[LOG] still frames

Before the flagships.

ls ./archive

2025Axel Propertiesbrand, mobile design lead
2025SecretoChoweb, code 28 components
2023–25client identitiesbrand 7 marks
2023–24Leverateweb, brand, mobile, print UX/UI and web designer
2022–23HYLA North Americabrand, web, mobile Senior UX/UI designer
2020–22CPM SoftwareERP, BI, mobile, desktop UX/UI designer
2018–22Palamut Groupmobile, web, research UX/UI designer

[MSG]

Hiring a design engineer?

I’m open to senior design engineer roles: remote from Belgrade, or relocation with visa sponsorship. Write to me, or read the CV first. Client work stays selective, one project at a time.

sc@secretocho.design

read the CV · LinkedIn

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