Jesus C.

Jesus C.

Mobile Developer

Germany
Trusted member since 2025
7 years of experience

He has led the technical design and implementation of complex products from concept to App Store release, focusing on code quality, performance, and maintainability.

Jesus is recognized for his expertise in clean architecture and SOLID principles, mentoring junior engineers, and guiding teams to deliver reliable, end-to-end mobile solutions.

Main expertise

Mobile7 years
iOSiOS7 years
SwiftSwift7 years
AndroidAndroid5 years
12+

Experience5

Neybox

Senior iOS Engineer

Neybox
Fitness and Wellness
Aug 2025 · 8m

Neybox builds Pillow, a leading sleep-tracking app for Apple devices.

  • Contributed to new features and UX improvements across iPhone, iPad, and watchOS.
  • Enhanced watchOS integrations and optimized data flows for sleep-tracking features.
  • Maintained code quality and supported ongoing improvements for a high-traffic consumer app.
UI
UX
iOSiOS
SwiftSwift
FigmaFigma
4+
Pillow

Senior iOS Engineer

Senior iOS Engineer
Healthcare
Jan 2024 - Jul 2025 · 1y 6m

Fisher & Paykel Healthcare is a leading global manufacturer specializing in medical devices and systems for respiratory care, acute care, and the treatment of obstructive sleep apnea.

  • Designed the mobile system architecture integrating iOS apps with cloud backends and BLE peripherals.
  • Built PoCs using Kotlin Multiplatform to share business logic across Android and iOS.
  • Implemented the full iOS codebase using SwiftUI and clean architectural patterns.
  • Led, mentored, and supported junior mobile developers.
  • Conducted A/B tests and user interviews to validate product hypotheses and improve patient experience.
  • Coordinated design, development, and QA tasks aligned with stakeholder goals.
AndroidAndroid
iOSiOS
SwiftSwift
FigmaFigma
UIKitUIKit
7+
Dormakaba

Software iOS Engineer

Dormakaba
Home Automation
Oct 2020 - Oct 2023 · 3y

The dormakaba Group is a globally leading provider of smart & secure access solutions. World leader in engineering, research, and development services.

  • Conceived, developed, and launched multiple high-quality IoT applications from scratch for the App Store.
  • Spearheaded the development and launch of new iOS applications for cloud-based digital twin access solutions (IoT) in 2018.
  • Managed maintenance of existing apps from analysis through deployment.
  • Provided ongoing support and mentored new colleagues within the iOS team.
  • Developed complex integrations across cloud, firmware, and mobile technologies.
  • Performed system analysis to identify gaps and ensure seamless end-to-end integrations.
  • Consistently delivered projects on time, demonstrating strong project management skills.
  • Managed Apple certificates and developer accounts, contributing to the development and support of internally developed SDKs.
  • Implemented BLE communication between iOS apps and hardware devices.
iOSiOS
SwiftSwift
FigmaFigma
UIKitUIKit
FirebaseFirebase
5+
TalentoMobile

Software Android Engineer

TalentoMobile
InsurTech
Sep 2019 - Oct 2020 · 1y 1m

FinTech / InsurTech company that offers mobile first technology solutions.

  • Spearheaded the development and launch of new Android applications and managed the maintenance of legacy apps.
  • Delivered high-quality, defect-free applications across financial, insurance, and telecom domains.
  • Consistently met project deadlines across all engagements.
Sketch AppSketch App
JavaJava
AndroidAndroid
FigmaFigma
KotlinKotlin
3+
Holvi

Mobile Engineer Intern

Holvi
Mobile Banking
Feb 2019 - Jun 2019 · 4m

Holvi is a Finnish digital banking platform for entrepreneurs and small businesses.

  • Supported the mobile team in enhancing features for the Holvi Android banking app.
  • Developed an end-to-end invoice-recognition feature using QR codes.
  • Contributed to e-commerce and payments functionalities.
  • Gained hands-on experience building customer-facing financial apps in an agile environment.
JavaJava
AndroidAndroid
iOSiOS
KotlinKotlin
ScrumScrum

Assessments

Engineering excellence

Jesus’s overall performance in a 90-minute live technical assessment ranks in the top 5% of vetted Mobile Developers at Proxify.

Certificates 1

British Council
IELTS Level C1British Council

Issued Jun 2023
Credential ID 23ES500248CALJ024G

British Council
IELTS Level C1British Council

Issued Jun 2023
Credential ID 23ES500248CALJ024G

Do you want to know more about Jesus’s certifications?Book a call

Portfolio

Highlighted by Jesus

Pillow 3
Aug 2025 · Neybox
Pillow

Contributed to new features and improvements for Pillow, a leading sleep tracking app for Apple Watch and iOS. Worked on enhancing watchOS integrations and refining the user experience across iPhone, iPad, and Apple Watch.

Education

UOH
University of Hradec Kralové
Computer Science2018 - 2019
PUO
Polytechnic University of Madrid
Computer Science2015 - 2019

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