Senior Mobile Engineer

Senior Mobile Engineer

Full-Time 43200 - 72000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Develop innovative mobile solutions and tackle real-world challenges in logistics.
  • Company: Join Relay, a fast-growing tech startup revolutionising e-commerce logistics.
  • Benefits: Competitive salary, flexible work options, and opportunities for professional growth.
  • Why this job: Make a tangible impact on the future of online shopping and delivery.
  • Qualifications: Experience in mobile development and a passion for problem-solving.
  • Other info: Dynamic team culture with rapid career advancement and mentorship from industry leaders.

The predicted salary is between 43200 - 72000 £ per year.

Relay is fundamentally reshaping how goods move in an online era. Backed by Europe’s largest-ever logistics Series A ($35M), Relay is scaling faster than 99.98% of venture-backed startups. We envision a world where more goods move more freely between more people, making the online shopping experience seamless and accessible to everyone.

The Team:

  • ~90 people, more than half in engineering, product and data
  • 45+ advanced degrees across computer science, mathematics and operations research
  • Thousands of data points captured, calculated, analysed and predicted for every single parcel we handle
  • An intellectually vibrant culture of first‑principles thinking, tight feedback loops and relentless experimentation

Work Alongside Industry Leaders:

  • Diego Protas – Director of Engineering, an expert in distributed systems and hardware architecture, merging physical computing with enterprise-scale infrastructure.

Tech Stack Highlights:

  • Cross-platform Flutter apps with a deep focus on user experience
  • Python, Rust and TypeScript - we keep things simple but use the right tool for the job
  • Cloud-native on GCP with extensive use of BigQuery and Cloud Run
  • Extensive use of ML modelling and LLM inference
  • Emerging tech integrations, including robotics and IoT-powered operations

What you’ll do:

  • Work across the full stack of technology, from mobile all the way down through data infrastructure.
  • Take end-to-end ownership over thorny real-world problems, like using machine vision to automatically assess proof of delivery photos.
  • Collaborate with team members across the company.
  • Regularly spend time in the field learning how the technology you build impacts our couriers and parcel recipients.

Fast and Focused Hiring Process:

  • Talent Acquisition Interview - 30 min
  • Build a UI Component Interview - 1 hour
  • Design and Mobile Fundamentals Interview + AI Programming (Build an APP) - 2 hours
  • Operating Principles & Impact - 1 hour
  • Decision and offer within 48 hours, our process mirrors our pace of work, typically completed in a week.

Who Thrives at Relay?

  • Aim with Precision: You define problems clearly and measure your impact meticulously.
  • Play to Win: You chase bold bets, tackle the hard stuff, and view constraints as fuel, not friction.
  • 1% Better Every Day: You believe that small, consistent improvements lead to exponential growth.
  • All In, All the Time: You show up and step up. You take ownership from start to finish and do what it takes to deliver when it counts.
  • People-Powered Greatness: You invest in your teammates. You give and receive feedback with care and candour.
  • Grow the Whole Pie: You seek out win-win solutions for merchants, couriers, and our customers.

Relay is an equal-opportunity employer committed to diversity, inclusion, and fostering a workplace where everyone thrives.

Senior Mobile Engineer employer: relaytech.co

At Relay, we are not just transforming logistics; we are creating a vibrant and inclusive work culture that prioritises innovation and collaboration. As a Senior Mobile Engineer, you will be part of a dynamic team that values your contributions and offers ample opportunities for professional growth, all while working in a fast-paced environment that encourages experimentation and learning. With access to cutting-edge technology and the chance to work alongside industry leaders, Relay is an exceptional employer for those looking to make a meaningful impact in the world of e-commerce.
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Contact Detail:

relaytech.co Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Mobile Engineer

✨Tip Number 1

Get to know Relay's mission and values inside out. When you walk into that interview, show us how your skills and experiences align with our goal of freeing commerce from friction. It’s all about making that connection!

✨Tip Number 2

Don’t just talk about your technical skills; demonstrate them! Be ready to showcase your problem-solving abilities during the Build a UI Component Interview. We want to see how you tackle real-world challenges.

✨Tip Number 3

Be prepared to discuss your past projects and how they’ve shaped your approach to engineering. We love candidates who can reflect on their experiences and share what they’ve learned along the way.

✨Tip Number 4

Finally, don’t forget to apply through our website! It’s the best way to ensure your application gets the attention it deserves. Plus, we’re all about speed, so you could be hearing back from us in no time!

We think you need these skills to ace Senior Mobile Engineer

Flutter
Python
Rust
TypeScript
Cloud-native Development
GCP (Google Cloud Platform)
BigQuery
Cloud Run
Machine Learning Modelling
LLM Inference
Mobile Development
Data Infrastructure
User Experience Design
Collaboration Skills
Problem-Solving Skills

Some tips for your application 🫡

Show Your Passion: When you're writing your application, let your enthusiasm for the role shine through! We want to see how excited you are about the opportunity to work with us at Relay and how you can contribute to our mission of freeing commerce from friction.

Tailor Your CV: Make sure your CV is tailored to the Senior Mobile Engineer position. Highlight your experience with Flutter, Python, and any relevant projects that showcase your skills in mobile development and problem-solving. We love seeing how your background aligns with our tech stack!

Be Clear and Concise: Keep your application clear and to the point. Use straightforward language to describe your experiences and achievements. We appreciate a well-structured application that makes it easy for us to see your qualifications and potential fit for the team.

Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re serious about joining our talented team at Relay!

How to prepare for a job interview at relaytech.co

✨Know Your Tech Stack

Familiarise yourself with Relay's tech stack, especially Flutter, Python, Rust, and TypeScript. Be ready to discuss how you've used these technologies in past projects and how they can be applied to solve real-world problems.

✨Showcase Problem-Solving Skills

Prepare to discuss specific challenges you've faced in previous roles and how you tackled them. Relay values end-to-end ownership, so highlight your ability to define problems clearly and measure your impact meticulously.

✨Emphasise Collaboration

Relay thrives on teamwork, so be prepared to share examples of how you've collaborated with others. Discuss how you give and receive feedback, and how you build trust within a team to achieve shared success.

✨Demonstrate a Growth Mindset

Relay is all about continuous improvement. Be ready to talk about how you strive for 1% better every day, whether through learning new skills or refining existing ones. Show that you're not just looking to fit in but to grow and contribute significantly.

Senior Mobile Engineer
relaytech.co
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