Senior iOS engineer, 6+ years in fintech. Deep in Swift, SwiftUI, structured concurrency, and modular architecture, with experience building framework code that ships into other teams' apps. Looking for a remote senior iOS role where engineers have real say in technical decisions.
Looking for a job
Guillermo Alfonso Varela Chouciño
@guillevc
Senior iOS Software Engineer and Tech Lead building modular Swift fintech apps.
SpainWhat I'm looking for
I’m a senior iOS engineer with 6+ years building iOS apps, most recently shipping core banking experiences in fintech at Open Digital Services (Santander Group) for Openbank and Verse (Block). I’ve led iOS development on a squad, driving end-to-end rollout of multi-tier subscription features across multiple markets and banks.
I enjoy building in modular, multi-target codebases—splitting features into independently releasable modules—while coaching and managing one engineer through goal-setting and career growth. Beyond my day job, I also ship my own App Store apps and open-source tools, including projects like SwiftUI-based SwiftTube and the iOS lottery app Décimos.
Experience
Work history, roles, and key accomplishments
OG
Current
Senior iOS Software Engineer & Tech Lead
Open Digital Services (Santander Group)
Jan 2025 - Present (1 year 6 months)
Led iOS development on a squad, delivering a multi-tier subscription feature end to end (perks and paid upgrades) and rolling it out across other Santander banks. Managed one engineer through goal-setting, 1:1s, and career growth.
OG
iOS Software Engineer
Open Digital Services (Santander Group)
Aug 2023 - Jan 2025 (1 year 5 months)
Built SwiftUI features for the cards squad, including card controls, details, statements, payment configuration, and financing.
VE
iOS Software Engineer
Verse
May 2022 - Jul 2023 (1 year 2 months)
Shipped core banking features using Swift and UIKit, including automatic deposits and scheduled peer-to-peer payments. Owned the shared design-system module and a UI test suite with end-to-end and snapshot coverage.
NS
iOS Software Engineer
Nomasystems S.L.
Feb 2020 - May 2022 (2 years 3 months)
Worked across a large Swift and Objective-C UIKit codebase and led the revamp of checkout and login flows. Handled on-call during peak sale events, diagnosing and resolving production issues under heavy user load.
EN
Full Stack Software Engineer
Enxenio
Sep 2018 - Feb 2020 (1 year 5 months)
Built web and back-end projects for multiple clients using Java, Node.js, and Angular.
Education
Degrees, certifications, and relevant coursework
Universidade da Coruña
Master's Degree in Computer Engineering, Computer Engineering
2019 - 2021
Master's degree in Computer Engineering at Universidade da Coruña (2019–2021).
Universidade da Coruña
Bachelor's Degree in Software Engineering, Software Engineering
2014 - 2019
Bachelor's degree in Software Engineering at Universidade da Coruña (2014–2019).
Availability
Looking for a job
Location
SpainAuthorized to work in
Website
guillevch.devSalary expectations
80k+ EUR
Job categories
Interested in hiring Guillermo Alfonso?
You can contact Guillermo Alfonso and 90k+ other talented remote workers on Himalayas.
Message Guillermo AlfonsoGet matched with your dream remote job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
