Summary
Overview
Work History
Education
Skills
Projects
Github Projects
Recommendations
Timeline
Generic

Ilker Isa Mercan

Sr. iOS Developer
Istanbul

Summary

Experienced Senior iOS Developer with 9+ years of expertise building scalable, modular, and user-focused applications.

Successfully delivered high-performing apps in travel, e-commerce, fintech, healthcare, and entertainment sectors.

Passionate about clean architecture, app store excellence, and continuous learning. Proven leadership in both

team-based and independent roles.

Overview

18
18
years of professional experience
1
1
Language

Work History

Sr. Ios Developer

Etstur
02.2023 - Current
  • Applied Agile software development methodology to elevate final products and streamline development efforts.
  • Translated basic design plans into full iOS app frameworks, delegating project components to appropriate team members.
  • Evangelized for end-user experience improvements to enhance overall adoption rates.
  • Our application has crash-free rate of 99,96%, meaning that 99,96% of all sessions occurred without any issues."

Sr. IOS Developer

Machinarium
10.2021 - 02.2023
  • Maintained and redesigned existing Boyner e-commerce applications by designing patches to be applied
  • Worked with stakeholders to find collaborative ways to deliver business value for parties.
  • Redesigned rejected applications to correctly apply Apple guidelines.

IOS Developer

Medics By Sirius
05.2018 - 07.2022

Medics By Sirius, the Next-Generation Healthcare. Medics By Sirius enables users to access easy, fast and reliable health services without leaving their comfort areas. Medics By Sirius, helps users navigate their entire healthcare journey, bring patients and medics together for the right healthcare, in the right place, at the right time.

  • Researched and selected APIs for integration into development projects.
  • Collaborated on all stages of systems development lifecycle, from requirements gathering to production releases.
  • Developed code fixes and enhancements for inclusion in future code releases and patches.
  • Worked closely with other business analysts, development teams and infrastructure specialists to deliver high availability solutions for mission-critical applications.

Sr. UX Designer & IOS Developer

Lojika Field Labs
06.2017 - 06.2018

TAG is a carpooling app in Turkey designed for people who would like to share their rides and share costs with other people. I lead the team responsible for the re-design and re-architecture of TAG App.

  • Built custom UI components to provide visually appealing and interactive experiences for users
  • Researched and selected APIs for integration into development projects
  • Developed maintainable, and testable code for various iOS applications
  • Enhanced user experience by designing and implementing intuitive user interfaces for iOS applications
  • Conceptualized and deployed enhanced product features and optimized implementation for use in marketing strategies.
  • Consulted with product development teams to enhance products based on customer data.
  • Worked with stakeholders to find collaborative ways to deliver business value for parties.

Sr. UX&UI Designer

Enuygun AS
02.2016 - 06.2017
  • Worked with C-level managers to enhance products based on customer data.
  • Leverage an understanding of customer needs and workflow to propose strategic enhancements to User Experience Design
  • Drive User Experience Design and User Research as core components of the product development process
  • Include user-centered design methods in all phases of the product development process
  • Represent User Experience Design in the definition of project scope
  • Independently, or in conjunction with Project Management, create, implement, and manage project plans for User Experience Design milestones

UX&UI Designer

UTT Publishing
09.2009 - 04.2015
  • Responsible for making sure that all internal and external systems in UTT Publishing Learning Management Systems and its subsidiaries had thoughtfully designed digital experiences that were delivered flawlessly
  • Analyzed requirements and designed, developed and implemented mobile apps, web sites, desktop apps

UI Designer

Ilancilik Advertising Agency
10.2007 - 10.2009
  • Translated established creative direction into conceptual ideas
  • Developed site navigation by categorizing content and funneling traffic through content for different companies
  • Developed concepts, target audience, requirements, deadlines and budgets
  • Delivered attractive, user-friendly and unique websites

Education

Bachelor of Arts - Public Relations And Advertising

Selcuk University
Konya
09.2004 - 2007.07

Skills

- Languages: Swift, Python, Go

- Architectures: MVVM, Clean Architecture, Coordinators

- Tools: Xcode, Git, Firebase, Bitrise, Jenkins, Fastlane

- Testing: XCTest, XCUITest, Unit & UI Testing

- APIs: RESTful services, JSON, 3rd Party SDKs

- CI/CD: Bitrise, GitHub Actions

- Store Management: App Store optimization and submission workflows

Projects

  • Etstur - Hotel, Flight - https://apps.apple.com/tr/app/etstur-otel-ara-u%C3%A7ak-bileti/id882198456?l=tr
  • Ucuzabilet: Flight, Hotel, Bus - https://apps.apple.com/tr/app/ucuzabilet-u%C3%A7ak-otel-otob%C3%BCs/id942464034?l=tr
  • Kids Fairy Tales ~ Book Sleepy - https://apps.apple.com/tr/app/kids-fairy-tales-book-sleepy/id6475602798
  • AI GirlFriend Chat - AMA - https://apps.apple.com/tr/app/ama-chat-video-call/id1504656317
  • Story Maker for Insta - Reels - https://apps.apple.com/tr/app/story-maker-for-insta-reels/id1574167404?l=tr
  • Minted TR - https://apps.apple.com/tr/app/minted-tr/id1609255317
  • Boyner – Online shopping - https://apps.apple.com/tr/app/boyner-online-al%C4%B1%C5%9Fveri%C5%9F/id610957461
  • Medics by Sirius - https://apps.apple.com/tr/app/medics-by-sirius/id1389805604?l=tr
  • Musixen - Live Concert Music - https://apps.apple.com/us/app/musixen-live-concert-music/id1511058649

Github Projects

The sample projects just show what kind of architecture I'm working on.


  • 🧩 [CoreMCPKit] (https://github.com/isamercan/CoreMCPKit)
    A modular, plugin-based Swift framework for building **context-aware AI agents** using the Model Context Protocol (MCP).
    Supports multi-agent orchestration with **LLM integration** and dynamic data sources.
  • 🧠 [LangMem] (https://github.com/isamercan/LangMem)
    An extensible, minimal AI memory system for hotel reviews.
    Features:
    - Structured memory per user
    - Semantic search
    - GPT-4o summarization
    - Polite, auto-generated replies
    - Runs **without a traditional database

  • 🎬 [MovieBox] (https://github.com/isamercan/MovieBox)
    A modular movies app written in Swift 5 using the TMDb API.
    Demonstrates **Clean Architecture**, **Dependency Injection**, **MVVM**, and **Coordinator** patterns.
  • 🎟️ [TicketApp] (https://github.com/isamercan/TicketApp)
    A sample ticketing application in Swift.
    Showcases **layered architecture** and **feature-based modularization** suitable for large-scale projects.

Recommendations

Ömer Akkentli
General Manager | Innovating CX using AI @ Afiniti

As the Head of Product and Technology team at Lojika, I worked with Isa from 2017 to 2018. We worked closely in developing our mobile product TAG, and I enjoyed watching him grow as a distinguished design professional.

İsa's knowledge of UI design and his expertise in user experience was a huge advantage. We worked on bringing a totally unique experience to market, which is quite challenging for designers. İsa has always been passionate at understanding user needs via research, at innovating solutions and at testing them with prototypes with real users.

He also completed his tasks with minimal supervision and despite his hectic schedule, he's always been on excellent terms with his colleagues and other teams.

Caglar Erol

Founder & CEO at Enuygun.com A.S. July 31, 2017

İsa is the kind of professional I would work with again with no hesitation. I know he'll make an excellent design leader and a valuable asset to any team he works with.

We worked with Isa for 1,5 years when he was a Senior Designer at Enuygun. Isa is a talented designer who always tries to come up with new ideas. He is a responsible professional who wants as many details as possible to deliver the right output. I recommend working with Isa in mobile or desktop design needs.

Timeline

Sr. Ios Developer

Etstur
02.2023 - Current

Sr. IOS Developer

Machinarium
10.2021 - 02.2023

IOS Developer

Medics By Sirius
05.2018 - 07.2022

Sr. UX Designer & IOS Developer

Lojika Field Labs
06.2017 - 06.2018

Sr. UX&UI Designer

Enuygun AS
02.2016 - 06.2017

UX&UI Designer

UTT Publishing
09.2009 - 04.2015

UI Designer

Ilancilik Advertising Agency
10.2007 - 10.2009

Bachelor of Arts - Public Relations And Advertising

Selcuk University
09.2004 - 2007.07
Ilker Isa MercanSr. iOS Developer