Mobile Application Engineer

Freetrade

ABOUT FREETRADE Freetrade’s mission is to become the default place to invest. Investing has been too complicated and expensive for too long, keeping millions from making the most of their savings. We’re changing that. We’re building our team and looking for people who are excited to reshape how our customers invest and grow their wealth. If you’re driven by solving complex problems and building innovative products, you’ll fit right in. 2026 is a big year for us. Last year, we announced a game changing deal to become part of the IG Group. We’ll continue to operate as an independent business while gaining access to the resources and support of an established leader in the space. This year, we’re accelerating our roadmap and taking our products to the next level. We’re building new features like mutual funds, bonds, and family investment tools. We’re also exploring how we can leverage AI to deliver an even better experience for our customers. Why Join Our Engineering Team? Be part of a team that’s shaping the future of investments. As an engineer, you’ll play a pivotal role in developing and maintaining a robust, scalable platform used by thousands daily. We tackle complex technical challenges, drive innovation, and build solutions that make a real impact. The Freetrade iOS mobile application provides the functionality for customers to access investment opportunities across the financial markets in the UK, US and EU. We are looking for an iOS Mobile Engineer to join our team at Freetrade. The role requires someone with a good understanding of the iOS mobile platform, ability to problem solve, and passion to improve their skills and deliver within a highly collaborative team. This is a unique opportunity to work with knowledgeable and experienced mobile engineers across both iOS and Android platforms, that will help develop your abilities. As part of our dedicated mobile engineering team, you will work on implementing new features as well as ensuring high levels of customer satisfaction by assisting in handling customer queries and feedback. In collaboration with design, product and QA teams you will craft new user experiences that will delight our customers. You will also help guide priorities around platform issues, technical debt, patterns, and architecture, ensuring we deliver a high-quality app and an excellent developer experience. Our Mobile team’s tech stack: * Our iOS app is written fully in Swift * Our app's UI is built using SwiftUI, with some UIKit code that we are in the process of migrating away from * We organise our components using the MVVM-C pattern * We use RxSwift for reactive data handling, with an ongoing migration toward Swift Concurrency * We use Factory for dependency injection * Screens are constructed with building blocks from our design system, built in SwiftUI * We use a layered modular architecture using Swift Packages to optimise scalability * We have recently transitioned to a modern, unified GraphQL API using Apollo What you'll be doing & your impact * Contribute to the development of new features and maintain existing features of the Freetrade iOS app. Ensure high performance, quality, security and responsiveness of the application. * Collaborate with cross-functional teams (including backend, design, product, and QA) to define, design, and ship new features. * Ensure the robustness of the application by writing tests and participating in code reviews. * Identify and correct bottlenecks and fix bugs. Help maintain code quality, organisation, automation and application releases * Ensure customer satisfaction by participating in a support rota to understand and address customer issues What you bring to the team * Typically around 3-5 years of experience developing production grade mobile applications * Strong ability to problem solve and passionate about improving your skills and knowledge * Good understanding of mobile architectural patterns, such as MVVM or MVP or VIPER * Experience in using industry standard tools for iOS development, such as Swift, SwiftUI and Xcode * Experience of using reactive libraries, such as Combine or RxSwift * Good understanding of Human Interface Guidelines. * Working understanding of using code version control tools (such as Git). * Appreciation of continuous integration and build tools (CircleCI). BENEFITS Freetrade is the place to accelerate your career. Our benefits package and ways of working are designed to attract and retain the most talented people who are dedicated to making an impact at Freetrade. Here’s what’s on offer in 2026: Hybrid working culture * We’re operating in a hybrid model: 3-days in-office / 2-days from home. We believe great collaboration happens in person and our beautiful offices in central London and Budapest are designed to bring people together. 🏢 Office days: Monday, Tuesday, Thursday 🏡 Work from home days: Wednesday, Friday This setup helps us stay connected, collaborate more effectively, and keep building a culture where we all do our best work together, including dedicated days for focus work. Flexibility for those who need it: We have a hybrid working model, but life happens. If you need flexibility let's talk about it, whether you're a parent or have other care responsibilities. Values At Freetrade we live and breathe our values: Honesty, Focus and Grit. Expect to be asked about these in your interview! Benefits In London: * Competitive salary – carefully benchmarked. * Base salary band for the position: £52K - £75K * Holidays – 25 days plus UK public holidays. Your birthday off, plus one extra day for every year at Freetrade * Enhanced pension – We’ll match your contributions up to 7%. * Group Life Insurance – Protect your loved ones with coverage at 5x your salary, ensuring financial security in any circumstance * Private Health Insurance - Which includes access to high quality medical care, mental health support, dental and vision plans, Wellness programs and preventative care initiatives are also provided to ensure the wellbeing of your entire family * Income Protection Cover – Safeguard your income with comprehensive coverage, ensuring financial stability in the event of illness or injury * Enhanced parental leave – Time off when it matters most * Flexibility for those who need it – We’re office-first, but life happens. Whether you’re a parent or have care responsibilities, we focus on output and trust you to manage your time * Learning & Development – We fund industry qualifications so you can grow as a financial services professional * Cycle to Work scheme – Get a high quality bike and gear through our salary sacrifice scheme, spreading the cost with tax free monthly installment * Paid Sick Leave – Receive 10 days of fully paid sick leave each calendar year Interview Process We keep things simple and transparent. Our process includes: * Initial interview – A chat with our Senior Talent Partner * Hiring Manager interview – A deep dive into your skills and experience * Live Coding – Show us how you think and solve problems * System Design – We’ll explore how you design systems to handle real-world challenges * Executive interview – A conversation with our stakeholders, where we also assess cultural fit We are an Equal Opportunity employer committed to a diverse and representative team. Whatever your race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability - we want to hear from you. To find out more about how we look after your personal data when you apply for a job with us, please see our Recruitment Privacy Policy here. Please note we are not accepting agency CVs.

Freetrade

ABOUT FREETRADE Freetrade’s mission is to become the default place to invest. Investing has been too complicated and expensive for too long, keeping millions from making the most of their savings. We’re changing that. We’re building our team and looking for people who are excited to reshape how our customers invest and grow their wealth. If you’re driven by solving complex problems and building innovative products, you’ll fit right in. 2026 is a big year for us. Last year, we announced a game changing deal to become part of the IG Group. We’ll continue to operate as an independent business while gaining access to the resources and support of an established leader in the space. This year, we’re accelerating our roadmap and taking our products to the next level. We’re building new features like mutual funds, bonds, and family investment tools. We’re also exploring how we can leverage AI to deliver an even better experience for our customers. Why Join Our Engineering Team? Be part of a team that’s shaping the future of investments. As an engineer, you’ll play a pivotal role in developing and maintaining a robust, scalable platform used by thousands daily. We tackle complex technical challenges, drive innovation, and build solutions that make a real impact. The Freetrade iOS mobile application provides the functionality for customers to access investment opportunities across the financial markets in the UK, US and EU. We are looking for an iOS Mobile Engineer to join our team at Freetrade. The role requires someone with a good understanding of the iOS mobile platform, ability to problem solve, and passion to improve their skills and deliver within a highly collaborative team. This is a unique opportunity to work with knowledgeable and experienced mobile engineers across both iOS and Android platforms, that will help develop your abilities. As part of our dedicated mobile engineering team, you will work on implementing new features as well as ensuring high levels of customer satisfaction by assisting in handling customer queries and feedback. In collaboration with design, product and QA teams you will craft new user experiences that will delight our customers. You will also help guide priorities around platform issues, technical debt, patterns, and architecture, ensuring we deliver a high-quality app and an excellent developer experience. Our Mobile team’s tech stack: * Our iOS app is written fully in Swift * Our app's UI is built using SwiftUI, with some UIKit code that we are in the process of migrating away from * We organise our components using the MVVM-C pattern * We use RxSwift for reactive data handling, with an ongoing migration toward Swift Concurrency * We use Factory for dependency injection * Screens are constructed with building blocks from our design system, built in SwiftUI * We use a layered modular architecture using Swift Packages to optimise scalability * We have recently transitioned to a modern, unified GraphQL API using Apollo What you'll be doing & your impact * Contribute to the development of new features and maintain existing features of the Freetrade iOS app. Ensure high performance, quality, security and responsiveness of the application. * Collaborate with cross-functional teams (including backend, design, product, and QA) to define, design, and ship new features. * Ensure the robustness of the application by writing tests and participating in code reviews. * Identify and correct bottlenecks and fix bugs. Help maintain code quality, organisation, automation and application releases * Ensure customer satisfaction by participating in a support rota to understand and address customer issues What you bring to the team * Typically around 3-5 years of experience developing production grade mobile applications * Strong ability to problem solve and passionate about improving your skills and knowledge * Good understanding of mobile architectural patterns, such as MVVM or MVP or VIPER * Experience in using industry standard tools for iOS development, such as Swift, SwiftUI and Xcode * Experience of using reactive libraries, such as Combine or RxSwift * Good understanding of Human Interface Guidelines. * Working understanding of using code version control tools (such as Git). * Appreciation of continuous integration and build tools (CircleCI). BENEFITS Freetrade is the place to accelerate your career. Our benefits package and ways of working are designed to attract and retain the most talented people who are dedicated to making an impact at Freetrade. Here’s what’s on offer in 2026: Hybrid working culture * We’re operating in a hybrid model: 3-days in-office / 2-days from home. We believe great collaboration happens in person and our beautiful offices in central London and Budapest are designed to bring people together. 🏢 Office days: Monday, Tuesday, Thursday 🏡 Work from home days: Wednesday, Friday This setup helps us stay connected, collaborate more effectively, and keep building a culture where we all do our best work together, including dedicated days for focus work. Flexibility for those who need it: We have a hybrid working model, but life happens. If you need flexibility let's talk about it, whether you're a parent or have other care responsibilities. Values At Freetrade we live and breathe our values: Honesty, Focus and Grit. Expect to be asked about these in your interview! Benefits In London: * Competitive salary – carefully benchmarked. * Base salary band for the position: £52K - £75K * Holidays – 25 days plus UK public holidays. Your birthday off, plus one extra day for every year at Freetrade * Enhanced pension – We’ll match your contributions up to 7%. * Group Life Insurance – Protect your loved ones with coverage at 5x your salary, ensuring financial security in any circumstance * Private Health Insurance - Which includes access to high quality medical care, mental health support, dental and vision plans, Wellness programs and preventative care initiatives are also provided to ensure the wellbeing of your entire family * Income Protection Cover – Safeguard your income with comprehensive coverage, ensuring financial stability in the event of illness or injury * Enhanced parental leave – Time off when it matters most * Flexibility for those who need it – We’re office-first, but life happens. Whether you’re a parent or have care responsibilities, we focus on output and trust you to manage your time * Learning & Development – We fund industry qualifications so you can grow as a financial services professional * Cycle to Work scheme – Get a high quality bike and gear through our salary sacrifice scheme, spreading the cost with tax free monthly installment * Paid Sick Leave – Receive 10 days of fully paid sick leave each calendar year Interview Process We keep things simple and transparent. Our process includes: * Initial interview – A chat with our Senior Talent Partner * Hiring Manager interview – A deep dive into your skills and experience * Live Coding – Show us how you think and solve problems * System Design – We’ll explore how you design systems to handle real-world challenges * Executive interview – A conversation with our stakeholders, where we also assess cultural fit We are an Equal Opportunity employer committed to a diverse and representative team. Whatever your race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability - we want to hear from you. To find out more about how we look after your personal data when you apply for a job with us, please see our Recruitment Privacy Policy here. Please note we are not accepting agency CVs.

Proton

Join Proton and build a better internet where privacy is the default Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right. Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives! We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants. Our 500+ team members across 50+ countries come from leading organizations and elite academic backgrounds. We move fast, keep hierarchy light, and prioritize impact over optics. If you want to do meaningful work with exceptionally high-caliber people, this is it. Join us and do work you can truly be proud of. Check our open-source projects here! About Photos Join the team building Proton Drive Photos, a private photo storage designed so your memories belong only to you. We’re creating the encrypted alternative to Big Tech photo platforms, combining consumer-grade UX with uncompromising privacy. If you want to build products used by millions while helping fix the internet, we’d love to meet you. Role overview As a fullstack cross-platform Android Engineer, you'll play a pivotal role in developing Proton Photos using Jetpack Compose and Rust. You’ll use an end-to-end ownership approach, ensuring timely delivery of high-quality, scalable solutions that will delight our customers.  Key responsibilities * Develop and maintain cross-platform mobile applications for Android using a blend of cross-platform (Rust) and native technologies (Kotlin) * Take end-to-end ownership of mobile application development projects: you'll be comfortable with scoping projects, walking back from deadlines and being able to discern the important from the superfluous * Foster a culture of innovation by exploring new technologies, methodologies and approaches to mobile development – we tackle complex engineering challenges with creativity and ingenuity * Optimise mobile applications for performance, usability and responsiveness across different devices and screen sizes * Master memory management, multithreading and concurrency mechanisms to enhance performance and responsiveness of mobile applications * Design for scalability, considering factors such as data caching, network bandwidth and server load * Prioritise customer satisfaction by maintaining a customer-centric mindset throughout the development process, continuously seeking feedback and iterating to improve the user experience The ideal candidate will bring * Bachelor's degree in Computer Science, Engineering or related field (or equivalent work experience) * Excellent problem-solving skills and the ability to think outside the box to overcome challenges * Passion for continuous learning and driving change in the rapidly evolving field of mobile development * Excellent communication and interpersonal skills * Proven experience developing mobile applications for Android using Kotlin * Proficiency with Jetpack Compose for Android, and familiarity with Rust * Strong understanding of mobile app architecture, design patterns and best practices * Knowledge of memory management techniques and best practices * Experience with multithreading and concurrency in mobile applications * Good understanding of scalability considerations when it comes to engineering mobile applications * Previous experience working in a fast-paced, scale-up environment Even if you don’t meet all the requirements listed above but feel you could still be a great fit, please do apply. What we offer * Technology: we provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals * Learning & Development: we are committed to your professional growth – Proton offers various learning opportunities, including training programs, conferences/events and continual learning * Employee Benefits: comprehensive health insurance plans, competitive retirement savings options, generous vacation/leave policies and wellness programs * Stock Options: at Proton, we are all owners of the company and you get stock options when you join us * In-Person Collaboration: collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje and Taipei – you can enjoy working from home for up to 30% of the time, while enjoying great company culture during our three core days in the office * Food: lunch and snacks are provided by Proton every day at our offices * Transport: we'll always support our employees with transport costs through subsidising public transport, bike allowances or parking spaces based on your office location * Flexible Working: you can define your own working hours as long as it works with team meetings * Work that Matters: Proton is a community-first organisation, started with the support of a crowdfunding campaign and built with community input – to this day, Proton’s only source of revenue is user subscriptions: over 100 million people trust and support Proton, and we put our users and community first in everything we do (read more about our impact here) Our commitment to diversity and inclusion At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability or socio-economic background feel valued and empowered. We strive to create equal opportunities, promote open dialogue and support continuous learning to ensure every voice is heard and respected. If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. Candidate privacy notice When you apply for a position, refer a candidate or are considered for a role at Proton Technologies AG (Proton, we, us or our), your information is stored in Greenhouse, in accordance with its Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills. If we no longer have a legitimate business need to process your information, we will either delete or anonymise it. Should you have any inquiries about how we use or manage your information or if you wish to access, correct or delete your data, please contact our privacy team at careers@proton.ch. Proton does not accept unsolicited CVs from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton. To learn more about our privacy policy, please visit our privacy policy page. #LI-ONSITE