José Jeria-Freelance iOS Developer
Check rate
Experience
Freelance iOS Developer
Freelancer
PAYBACK GmbH: PAYBACK app - a loyalty bonus program and customer card that allows users to collect points.
Enhanced the application's architecture by restructuring and modularizing it.
Refactored and improved complex features using SwiftUI and The Composable Architecture.
Maintaining, bug fixing, optimizing, troubleshooting, and continuously improving the app.
Facilitating and planning the onboarding of new developers and providing mentorship.
Assistance in the hiring process, including evaluation, interviews, and strategic planning.
Porsche Digital GmbH: Development of the Porsche Road Trip app that allows users to comfortably plan and navigate through spontaneous drives and individual road trips along curated premium routes.
KI Labs: Development of a MVP for a large automotive company.
Snapp Mobile Germany GmbH: Equitel Banking - Consumer digital banking app for Equity bank, one of the largest banks in Sub-Saharan Africa.
comdirect Mobox - Banking app to manage current, savings and credit card accounts for teenagers. Addressed technicalities of implementing playful UI with customizable options and various offline features.
Deutsche Bahn AG - Development of a prototype for the next generation of companion app for train travellers.
optile GmbH: KPI Dashboard - KPI tracking of online payments for merchants that use optile's online payment solutions.
Every Interaction: Watchy - Composer of Apple Watch screenshots, which allows users to export the composed image and share it.
Senior Developer
optile GmbH
- Architecture and implementation of a RESTful web service using Spring REST and MongoDB.
- JavaScript development of a dynamic payment page for merchants.
- Development of a native (Objective-C) iOS app that displays realtime KPI tracking for optile GmbH merchants.
Senior Consultant
b.telligent GmbH
- Technical lead for a small team, successfully developing and delivering high quality web applications greatly improving client processes.
- Delivered several complex applications at o2 Germany for a user base of over 1000 users with a team of 3 developers using Spring, Oracle and JSF with a self-developed GUI toolkit.
- Design and implementation of software solutions using user centered design methodologies including user interviews and development of wireframes.
- Development of a workflow-driven recruiting management system capable of handling over 100000 applicants per year using Spring, Ext-GWT, Hibernate and MySQL.
- Development and delivery of Spring Framework training within the company.
- Actively participated in recruiting new team members.
Site Developer
Sapient
- Development of front-end templates for an intranet at Deutsche Telekom.
- Creation of business designs with related use cases.
- Development of various front-end solutions such as search functions and widgets (calendars, autocomplete).
- Collaborative work with a development team located in India.
Interface Developer
Ciao GmbH
- Recoded, optimized and maintained the site's front-end interface using web standards-compliant technologies such as XHTML, CSS and JavaScript.
- Implemented search engine optimization techniques.
- Applied work to [link] [link] [link] [link] and [link]
Interface Developer
Razorfish Germany
- Developed entire front-end solutions (JavaScript/DOM widgets, templates) for clients such as Audi, Deutsche Börse, Bayern LB, Postbank, SI Centrum and HVB Group.
- Delivered a 7 month project at Deutsche Börse in Frankfurt developing its complete new front-end interface as well as client-side widgets using JavaScript/DOM.
- Improved browser compatibility for Netscape 4 and Mozilla browsers for Audi’s main web portal.
- Integrated HTML templates for WebEdition, a PHP-based content management system, for SI Centrum.
- Served as technical advisor for usability and other issues in the preparation of customer proposals and development of front-end interfaces.
Interface Developer
Razorfish Sweden
- Developed client-side solutions and back-end functionality using JSP for clients including hemel.se (now Fortum), endesa.com and SJ Ung.
- Template development and JSP integration for the Birka HemEl web portal.
- Cross-browser DHTML game development for a campaign on Swedish artist Ernst Billgren’s website.
- Developed client-side functionality in Madrid for Endesa, an electric utility company in Spain.
Interface Developer
Entrappa AB
- Developed cross-browser HTML and JavaScript solutions for the initial jobbdirekt.se web portal.
- Worked on projects for clients including Interflora, Sony Music and megastore.se.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Banking and Finance, Automotive, Professional Services, Advertising, and Media and Entertainment.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Marketing.
Summary
With over 20 years of expertise, I offer extensive experience in software development, specializing in the architecture and development of complex applications. I have a track record of effectively leading teams to success. Proficient in the entire software life cycle, from requirements analysis to ongoing support.
Currently freelancing with a primary focus on iOS development.
Skills
- Programming Languages And Frameworks: Swift, Objective-C, Swiftui, Uikit, Swift Concurrency, Combine, The Composable Architecture, Mvvm, Firebase, Rxswift, Rxcocoa, Swift Package Manager, Cocoapods, Carthage, Mapbox, Java, Javascript, Typescript, Gwt, Ext-Gwt, Spring, Spring Mvc, Spring Rest, Spring Hateoas, Junit, Testng, Maven, Jpa, Jsp, Jsf, Html, Xml, Xslt, Dom, Json, Css
- Software Design And Development: Functional Programming, Oop, Design Patterns, Component-Based Architecture, Agile, Scrum, User-Centered Design, Continuous Integration
- Databases And Query Languages: Core Data, Realm, Mysql, Oracle, Postgresql, Pl/Sql, Mongodb
- Development Tools And Software: Xcode, Testflight, Fabric, Zeplin, Jenkins, Git, Jira, Confluence, Trello, Eclipse, Subversion
- Operating Systems: Macos, Linux, Windows
Languages
Education
Rudbecksskolan
High school · Sweden
Certifications & licenses
Object-Oriented Analysis and Design Using UML (OO-226)
SpringSource Certified Spring Professional
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
José is based in Lich, Germany.
José speaks the following languages: Spanish (Native), Swedish (Native), German (Advanced), English (Advanced).
José has at least 30 years of experience. During this time, José has worked in at least 5 different roles and for 8 different companies. The average length of individual experience is 4 years and 9 months. Note that José may not have shared all experience and actually has more experience.
Based on recent experience, José would be well-suited for roles such as: Freelance iOS Developer, Senior Developer, Senior Consultant.
José's most recent position is Freelance iOS Developer at Freelancer.
In recent years, José has worked for Freelancer.
José is most experienced in industries like Information Technology, Banking and Finance, and Automotive. José also has some experience in Professional Services, Advertising, and Media and Entertainment.
José is most experienced in business areas like Information Technology, Product Development, and Marketing.
José has recently worked in industries like Automotive, Banking and Finance, and Information Technology.
José has recently worked in business areas like Information Technology and Product Development.
José attended Rudbecksskolan.
José has 3 certificates. These include: Object-Oriented Analysis and Design Using UML (OO-226), SpringSource Certified Spring Professional, and Sun Certified Java Programmer (CX-310-055).
The availability of José needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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