Staff Software Development Engineer (iOS)

How You’ll Support Our Mission 

As a member of our newly formed EMS Medic-5 Engineering Team, you will be working on a new, high-profile product which ESO is launching to revolutionise the Emergency Medical Services marketplace and fundamentally change the way ambulance crews and clinicians provide and track the medical care they provide.  Partnering with Apple to build our new iOS app in an innovative iOS Native architecture will allow ESO to use many of the out of the box features and functions you may find on an iOS device. This role is an opportunity to make a real difference to community health and safety while growing your expertise on a cutting-edge application which makes use of the latest iOS technologies.  Our software engineers are passionate about their craft and revel in shipping software that improves patient care, so if you are ready to write elegant and innovative code that will affect real change, this is the job for you. 

 Reporting to the Development Manager you would be an integral and influential part of our Engineering team.   

What You’ll Be Doing – the day to day 

As a Staff Engineer, you'll take on a dynamic role that combines technical expertise, leadership, and collaboration. You'll work closely with product managers and designers to understand project requirements and translate them into a scalable, efficient app architecture. You'll be instrumental in the development process, writing and reviewing code primarily in Swift, ensuring adherence to coding standards and best practices. Throughout the development cycle, you'll implement robust testing strategies and optimize the app’s performance to ensure a seamless user experience. Additionally, you'll mentor more junior developers as the team expands, providing technical guidance and conducting code reviews to maintain high-quality code. You'll also collaborate with other engineering teams to integrate the app with backend services and APIs, and continuously monitor and debug any issues that arise. You’ll help to drive continuous improvement in the development process and contribute to the overall success of the project.  

Our development engineers lead by championing a culture of personal ownership and customer-focused execution. We love those who pride themselves on how they contribute through excellent solutions and end-user experiences, as much as clean and clear code. 

Who You Are - the essentials (Some of the things required to be successful in the role):  

• 8+ years’ experience in software engineering, software design and architecture principles 

• Demonstratable experience in implementing and optimizing complex architectural patterns like MVVM (Model-View-ViewModel), VIPER (View-Interactor-Presenter-Entity-Router), and Clean Architecture to ensure maintainable and scalable code 

• Strong experience programming in Swift and/or Objective C 

• Deep understanding of concurrency mechanisms in iOS, such as Grand Central Dispatch (GCD) and Operation Queues, to ensure smooth and responsive user interfaces 

• Proficiency in handling complex networking tasks, including background data synchronization, real-time data updates with WebSockets, and efficient caching strategies 

• Designing and implementing efficient and secure communication between the app and backend services using RESTful APIs, GraphQL, and WebSockets. Experience with parsing and managing large JSON/XML data structures  

• Expertise in profiling and optimizing app performance using tools like Instruments. Experience with identifying and resolving memory leaks, reducing CPU usage, and optimizing battery consumption 

• Strong experience in writing unit tests, UI tests, and integration tests using frameworks like XCTest, and adopting TDD practices to ensure high code quality and reliability 

• Problem-solving and analytic thinking skills 

• Understanding of Agile Scrum framework 

• A track record of defining and implementing high quality engineering practices 

Experience of some of the following technologies, and a passion to learn and grow across many of the remainder: 

• IDEs such as AppCode, CodeRunner, Xcode 

• Familiarity with AVFoundation, RxSwift, UIKit, XCTest, XCUITest and Tuist Cloud 

• Strong understanding of Apple OS frameworks (Core Animation, Core Data, Core Graphics, Core Text) 

• Any wider experience of other technologies, and a passion to teach and share those with your new team 

Who You Are - the desirables (It’s a plus if you have):  

• Strategic leadership experience with an ability to set long-term technical direction 

• Experience with cross-platform frameworks like React Native or Flutter, or proficiency in integrating iOS apps with other platforms, ensuring a cohesive multi-platform strategy 

• Willingness to work on any part of the technology stack 
• A thought leader in our industry who regularly contributes to the community  

Benefits & Perks! You will have fantastic benefits at ESO including but not limited to;

• Life insurance (4 x base salary) 
• Income protection insurance 
• A generous pension contribution 
• Private medical insurance including optical and dental 
• A health cash plan 
• Modern City Centre office and a flexible hybrid working policy  
• Annual health and wellness allowance + cycle-to-work scheme  
• Enhanced paternity leave and pay, enhanced adoptive pay, enhanced maternity pay 
• Enhanced short and long-term sick pay 
• Great holiday entitlement which increases year on year until you reach 5 years of service! 

About ESO

ESO is a fast-paced, growing data, technology and research company passionate about improving community health and safety through the power of data. We pioneer innovative, user-friendly software to meet the changing needs of today’s EMS agencies, fire departments, and hospitals. We’re small enough to be nimble and fun, but big enough to be a great place to work. We serve thousands of customers out of our offices across the US, Canada and Northern Ireland. 

Are you ready to Make a Difference? 

ESO is committed to creating a diverse and inclusive work environment and is proud to be an equal opportunity employer. We invite you to consider opportunities at ESO regardless of your gender; gender identity; gender reassignment; age; religious or similar philosophical belief; race; national origin; political opinion; sexual orientation; disability; marital or civil partnership status or other non-merit factor.

Data Privacy

We disclose your personal information to our private equity sponsor, Vista Equity Partners, and its affiliates, including Vista Consulting Group (collectively, “Vista”), for administration, research, database development, workforce analytics and business operation purposes, in line with the terms of this Privacy Policy. Vista processes and shares your personal information with its affiliates, including other Vista portfolio companies, on the basis of its legitimate interests in managing, administering and improving its business and overseeing the recruitment process and, if applicable, your employment relationship with ESO Solutions UK Ltd. If you have consented to us doing so, we also share your personal information with other Vista portfolio companies for the purpose of being considered for other job opportunities in the pooling system, both inside and outside the EEA. Please find a full list of all Vista portfolio companies at: https://www.vistaequitypartners.com/companies/ and Vista’s privacy policy at https://www.vistaequitypartners.com/privacy/. Where this requires us to transfer your personal information outside of the EEA, please refer to the Privacy Policy for further details on cross-border transfers. In connection with the recruitment process, your personal data may be transferred outside of the EEA to Lever, Hirebridge, LLC and Criteria Corp., which provide applicant tracking and evaluation services. Hirebridge, LLC and Criteria Corp. have agreed to comply with the EU Standard Contractual Clauses to ensure that your personal information is adequately protected whilst outside of the EEA.