I am a software engineer with over 10 years of experience building mobile, web, and cloud-based products for startups and enterprises. I enjoy turning complex requirements into practical, scalable solutions and leading cross-functional teams to deliver high-quality software on time. I thrive in fast-paced environments and love mentoring others, sharing knowledge, and contributing to open-source and education projects.…

Darryl Bayliss

I am a software engineer with over 10 years of experience building mobile, web, and cloud-based products for startups and enterprises. I enjoy turning complex requirements into practical, scalable solutions and leading cross-functional teams to deliver high-quality software on time. I thrive in fast-paced environments and love mentoring others, sharing knowledge, and contributing to open-source and education projects.…

Available to hire

I am a software engineer with over 10 years of experience building mobile, web, and cloud-based products for startups and enterprises. I enjoy turning complex requirements into practical, scalable solutions and leading cross-functional teams to deliver high-quality software on time.

I thrive in fast-paced environments and love mentoring others, sharing knowledge, and contributing to open-source and education projects.

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Skills

Experience Level

Android
Expert
iOS
Expert
Kotlin
Expert
Swift
Expert
AWS
Expert
Google Cloud
Expert
Java
Expert
JavaScript
Expert
React JS
Expert
Node.js
Expert
Objective-C
Expert
Spring
Expert
TypeScript
Expert
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Language

English
Fluent

Work Experience

Technical Lead at Novoda
August 1, 2024 - Present
Responsible for the technical direction and hiring of an Android team of 6 contractors and permenent staff across Europe for a theatre ticketing and indoor food delivery app with an industry leader. Delivered the 1 st iteration of the app in 13 months, and within 3 months achieved a Google Play rating of 4.9 stars and contributed to gross revenue of 2.5M. Setup the app using a modular approach, using MVVM as the architecture of choice. Used the latest Android tools (Kotlin 2, Jetpack Compose, Retrofit / Okhttp, Apollo Kotlin, Room, Ktlint, Detekt, Hilt, New Relic, Firebase, Roborazzi, JUnit, Jetpack Compose UI Test, Espresso) and AWS Technologies (AWS Lambda, CloudWatch, SQS). Set up the release process to support beta releases for different audiences (stakeholders, technical) using JIRA Releases, GitHub Actions, Firebase App Distribution, and Google Play Developer Console.
Contributor at Raywenderlich.com / Kodeco
August 1, 2014 - Present
Educating developers worldwide by writing, editing and project managing iOS / Android mobile development content. Between 2014-2018 wrote a number of Android development tutorials, including a beginners series using XML Views and Java Between 2018-2021 created new revenue sources and extended audience by co-authoring 4 editions of Android Apprentice. The sites first Android book for beginners. In 2020, participated in a series of zoom calls, facilitating questions from viewers about Android & Flutter. In 2022-2023 Extended company revenue by leading a team of subject matter experts, technical editors and editors to deliver the 2nd edition of Jetpack Compose by Tutorials. In 2023, reviewed and provided critique for iOS based content relating to SwiftUI widgets In 2024, produced a collection of iOS content based on Observable View Models, Swift Concurrency, Swift Data, and App Storage In 2025, produced content exploring how to use Liquid Glass for iOS 26 development
Senior Android Engineer at Tymit
June 1, 2023 - Present
Built a whitelabel loyalty payments solution in collaboration with Visa, Launching a bespoke Rewards Credit Card for Harley Davidson and Frasers Group, a company partner. Provided Technical Leadership to a multi-disciplinary team across Europe (Product, Design, Backend) to prevent Fraudulent transactions and enable payments via QR codes for Frasers Group, a company partner. Tools used include Kotlin, XML Views, Jetpack Compose, Firebase, Jenkins CI
Senior Android Engineer at The Body Coach
January 3, 2022 - May 31, 2023
Delivered the 1 st The Body Coach Senior Android Engineer iteration of the app. The app won Google Play Best App of 2022 within UK and Australian markets. Slashed company spending by seamlessly bringing platform and app development in house. The platform served 120k users at the time. Increased subscription conversion by 10% implementing a redesign of the app paywall using RevenueCat. Raised the profile of the company internationally by running a workshop at App Builders 2022 in Ascona, Switzerland. Created the companies first wearOS wearable prototype by measuring heart rate whilst a workout is played via the mobile app. Advanced company partnerships by developing app integration with Strava. Worked using Android, Kotlin, XML Views, Retrofit, Apollo GraphQL, Koin, ExoPlayer, Firebase, AWS Amplify
Senior Mobile Engineer at Thortful
May 17, 2021 - December 17, 2021
Boosted company sales for Fathers Day by delivering engagement features for the iOS app Introduced continuous delivery for the mobile apps via Microsoft App Studio, acquiring backing and budget from the VP of Engineering. Increased the Android apps average star rating from 1 to 5 by implementing features and fixes requested by product managers. Introduced the engineering function to knowledge sharing sessions. Supporting engineers to develop their presentation skills and encourage team discussion on best practices. Led a new gifting journey in the apps built in Flutter. Showcasing integration with the native codebase and reduced development times. Worked using iOS, Objective-C, Swift, Core Data, Mantle, Alamofire, Android, Kotlin, XML Views, Room, Retrofit, OkHttp, Picasso
Technical Lead at Axon Vibe
January 2, 2019 - March 1, 2021
Provided Technical Leadership for multiple cross-functional squads across Europe and Vietnam, supporting 1.7 million users of the platform. Drove technical deployments with new and existing external partners to increase company visibility and support company goals. Built features and bug fixes for SmartWay, an app built in conjunction with SBB to provide Switzerland’s first end to end journey booking app using shared journey providers. Strengthed company relations by delivering a set of mobile apps to the Metropolitan Transport Authority in New York during the pandemic. The apps received coverage by The Verge Mentored engineers on their strengths and weaknesses. Fostering a culture of continuous improvement and development. Travelled to meet partner organisations internationally, supporting integration of the business platform. Worked using Spring Framework, AWS SQS, S3, ECS, Postgres, MongoDB, Objective-C, Swift, Java, Kotlin, Jenkins CI
Mobile Engineering Chapter Lead at Axon Vibe
January 4, 2016 - January 1, 2019
Supervised a team of 6-7 engineers across iOS and Android based in Europe building SDKs & Apps Established process and ways of working to increase team productivity Represented the mobile function in external audits to help the business achieve and maintain ISO27001 certification Mediated between mobile engineering and product to ensure business priorities were achieved Worked using Objective-C, Swift, Core Location, Core Motion, Core Data, Java, Kotlin, SQLiteHelper / Room, FusedLocationProvider, SensorManager, Jenkins CI
Senior Mobile Engineer at Axon Vibe
June 1, 2015 - January 4, 2016
Delivered features and bug fixes to support company goals Drove the development and publishing of the companys first iOS app to the App Store under strict deadlines, enabling the company to demonstrate progress to investors Worked using Objective-C, Core Location, Core Motion, Jenkins CI

Education

BSc in Computing (Software & Systems) at Edge Hill University
January 1, 2009 - January 1, 2012

Qualifications

AWS Professional Cloud Architect
February 1, 2024 - February 28, 2026
As an AWS Certified Architect I have been independently verified that I have a a comprehensive understanding of AWS services and technologies.
GCP Professional Cloud Architect
January 13, 2026 - January 13, 2026
As an GCP Certified Professional Cloud Architect. I have been independently verified to enable organizations to leverage Google Cloud technologies.

Industry Experience

Software & Internet, Media & Entertainment, Education, Telecommunications, Professional Services
    paper EV Buddy

    A showcase of my Full Stack development Skills. EVBuddy is a full stack web app showing public electric vehicle chargers in the UK on a map. Uses publicly available data acquired from charging point operators.

    Built using ReactJS, Javascript, MapboxGL and NodeJS / Serverless. Hosted on AWS via S3, Route 53, Cloudfront, CloudWatch, Lambdas & Certificate Manager

    Available to try out [here](https://www.twine.net/signin

    paper Chill Videos

    A showcase of my Apple Development Skills. Chill Videos is a whitelabel video player app for tvOS and VisionOS showing a collection of looped videos, overlaying music using the latest Apple engineering practices. The videos are available for offline use.

    Available as a Looped Christmas Video App called [Christmas Chill](https://www.twine.net/signin and a Looped Ocean View App called [Ocean Chill](https://www.twine.net/signin

    In 2025 Christmas Chill was amongst the first apps available on the Apple Vision Pro App Store. In recognition of this I recieved an email from Apple’s VP of Worldwide Developer Relations, Susan Prescott, to thank me for being part of the launch.

    Built using Xcode, Swift 6, SwiftUI, UIKit, Observation Framework.