Android Engineer London

Android Engineer London

Full-Time 36000 - 60000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Design and build features for our innovative Android app, optimising performance and user experience.
  • Company: Join Sling, a cutting-edge fintech startup revolutionising money transfers globally.
  • Benefits: Competitive salary, equity, free lunch, hybrid work, and growth opportunities.
  • Why this job: Make a real impact in fintech while working with modern tech and a collaborative team.
  • Qualifications: Experience in building consumer Android apps and strong communication skills.
  • Other info: Be part of a dynamic team shaping the future of money transfer.

The predicted salary is between 36000 - 60000 £ per year.

About Sling

We aim to create a world where sending and receiving money is effortless. Our app allows users to pay people, not numbers – no IBAN, account numbers, or sort code required. All you need is the recipient\’s name to send money.

Sling leverages blockchain technology to transfer in any currency almost instantaneously for a negligible fee. We\’re in 150 countries and the app is available in the Android and iOS app stores. Sling is from Avian Labs, Inc., created by product builders and engineers from Monzo, Square, and Cash App.

Android at Sling Money

Our Android app is built entirely in Kotlin with Jetpack Compose from day one, so there\’s no legacy Java or XML code to maintain. We use modern libraries and architecture, including Apollo GraphQL for networking, Room for local storage, and Slack\’s Circuit framework to structure our Compose-driven UI. We\’ve built our own Solana Kotlin library in-house to interface directly with the blockchain.

The codebase is about three years old and we\’re entering a phase of rapid growth. Android is a critical platform for Sling, and we need to scale the app to serve users across 150+ countries on a wide variety of devices. This means focusing on performance, stability, and an excellent user experience, even on lower-end Android phones. And because Sling deals with people\’s money on the blockchain, security and cryptography are super important in everything we do on Android.

About the Role

We\’re looking for a Senior Android Engineer to join our small, experienced, and highly collaborative team. We want someone who is product-oriented and cares about how people will use and interact with the software they\’re building.

You\’ll be a key part of building and defining our product, our infrastructure, and our culture for years to come. We\’re looking for an engineer who cares about people, craft, and quality-and who likes to move fast.

What you\’ll do

  • Design, build, and ship new features for the Sling Money Android app, working across the UI and platform stack.
  • Collaborate closely with product managers, designers, and backend engineers to craft a great user experience from concept through launch.
  • Optimize the app\’s performance and reliability across a broad range of Android devices, ensuring a smooth experience even on entry-level hardware.
  • Improve and maintain core systems related to security and blockchain (Solana) integration.
  • Participate in code reviews, testing, and iterative improvements to keep the codebase high-quality and scalable as we grow.

What we\’re looking for

  • You\’re an experienced engineer who has built high-quality consumer Android apps at scale.
  • You have a drive to build and want to do it for billions of people, from the ground up.
  • You want to help build a team, not just be a part of it. You\’re happy to take the extra time to explain things, provide actionable feedback, and level up those around you.
  • You\’re a good communicator, both verbally and written.
  • You\’re comfortable with ambiguity, both technically and organizationally. You\’re happy to tackle problems without a clear definition or solution.
  • You enjoy owning problems from end-to-end, from the early exploration of the problem through to releasing things to customers.
  • You like to share your work early and you\’re happy to put something out there when it\’s 70% done.

Bonus points

  • Experience in fintech or the payments industry.
  • Familiarity with GraphQL and the Solana blockchain (or other blockchain technologies).
  • An eye for smooth, delightful Jetpack Compose animations and UI polish.
  • Proven skills in Android performance optimization, especially with Jetpack Compose.

Compensation, Perks & Benefits

  • Competitive salary and equity package
  • Opportunity to be a core part of a fast-growing fintech startup
  • Collaborative and innovative work environment with autonomy
  • Free lunch in our breezy Shoreditch office and hybrid working flexibility
  • Professional growth opportunities, team offsites, and events

Android Engineer London employer: Story Terrace Inc.

At Sling, we pride ourselves on being an exceptional employer, offering a collaborative and innovative work environment where your contributions truly matter. As a Senior Android Engineer in our vibrant Shoreditch office, you'll enjoy competitive compensation, equity options, and the chance to shape the future of fintech while working with cutting-edge technology. We foster professional growth through team offsites and events, ensuring that you not only thrive in your role but also enjoy a fulfilling career journey with us.
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Contact Detail:

Story Terrace Inc. Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Android Engineer London

✨Tip Number 1

Network like a pro! Reach out to folks in the fintech and Android development space. Attend meetups, webinars, or even just grab a coffee with someone who works at Sling. You never know who might have the inside scoop on job openings!

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best Android projects, especially those that highlight your experience with Kotlin and Jetpack Compose. This will give you an edge when chatting with potential employers.

✨Tip Number 3

Prepare for the interview by brushing up on your knowledge of blockchain technology and security practices. Sling is all about handling money securely, so being well-versed in these areas will definitely impress the team.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Sling team!

We think you need these skills to ace Android Engineer London

Kotlin
Jetpack Compose
Apollo GraphQL
Room for local storage
Blockchain integration
Android performance optimization
UI/UX design principles
Security and cryptography
Collaboration with product managers and designers
Code reviews
Testing methodologies
Problem-solving in ambiguous situations
Effective communication skills
Experience in fintech or payments industry

Some tips for your application 🫡

Show Your Passion for Product: When writing your application, let us see your enthusiasm for building products that people love. Share examples of how you've created user-friendly experiences in your previous roles, especially in Android development.

Highlight Your Collaboration Skills: We value teamwork at Sling, so make sure to mention any collaborative projects you've worked on. Talk about how you’ve partnered with product managers, designers, and backend engineers to bring ideas to life.

Demonstrate Your Technical Expertise: Be specific about your experience with Kotlin, Jetpack Compose, and any relevant libraries or frameworks. We want to know how you've tackled performance and security challenges in your past projects.

Keep It Clear and Concise: While we love detail, clarity is key! Make sure your application is well-structured and easy to read. Avoid jargon unless it’s necessary, and don’t forget to proofread before hitting send!

How to prepare for a job interview at Story Terrace Inc.

✨Know Your Tech Stack

Familiarise yourself with Kotlin, Jetpack Compose, and the libraries mentioned in the job description. Be ready to discuss how you've used these technologies in your previous projects, especially in terms of performance optimisation and user experience.

✨Show Your Problem-Solving Skills

Prepare to tackle hypothetical scenarios related to app performance and security. Think about how you would approach issues without clear solutions, as this role requires comfort with ambiguity and ownership of problems from start to finish.

✨Communicate Effectively

Practice articulating your thoughts clearly, both verbally and in writing. Since collaboration is key at Sling, demonstrate your ability to provide actionable feedback and explain complex concepts in a simple way during the interview.

✨Demonstrate Your Passion for User Experience

Be prepared to discuss how you prioritise user experience in your work. Share examples of how you've designed features with the end-user in mind, and express your enthusiasm for building products that truly benefit people.

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