Senior Mobile Engineer (Flutter)

North London (Hybrid- 4 days onsite)

£100,000–£135,000 + Generous Equity + Strong Package

Series A | High-Growth Tech

We’re partnered with one of Europe’s fastest-scaling technology start-ups, fresh off a major Series A raise and building at extraordinary pace.

This is not a typical mobile feature delivery role. This is an opportunity to help redefine how goods move in the digital economy- working at the intersection of mobile engineering, machine learning, and real-world operational systems.

The Team

• Close to 100 people globally and will be looking to almost double the team in 2026
• More than half in Engineering, Product and Data
• Culture built around experimentation, high standards and rapid feedback loops
• You’ll work closely with senior engineering leadership who have previously scaled large distributed systems and ML-driven platforms at global technology companies.

Tech Environment

• Cross-platform Flutter applications
• Will consider anyone from a native iOS/Android background who is happy to work in Flutter
• Backend systems built in Python, Rust and TypeScript
• Cloud-native architecture on GCP (BigQuery, Cloud Run)
• Extensive use of ML modelling and LLM inference
• Robotics and IoT integrations across operational workflows

What You’ll Do

• Take ownership of mobile engineering end-to-end using Flutter
• Work across the broader stack, from mobile through to data infrastructure
• Solve complex real-world problems (for example, computer vision for proof-of-delivery validation)
• Spend time in the field to understand how your technology impacts couriers and customers
• Ship quickly, iterate frequently, and continuously improve performance and user experience

This is a high-autonomy, high-impact role suited to engineers who thrive in fast-moving, intellectually rigorous environments.

Who This Role Suits

You are likely to succeed here if you:

• Enjoy working in a fast paced environment (Startup/scaleup vibes)
• Define problems clearly and measure impact rigorously
• Enjoy tackling complex technical challenges
• Move quickly and embrace iteration
• Take ownership from start to finish
• Value high standards and candid feedback
• Want to build technology that operates in the real world, not just on a screen

Package

• £100k–£135k base salary (depending on experience)
• Very competitive equity package with annual top ups
• Bupa private medical
• Gym Membership
• 25 days of holiday
• Enhanced Parental Leave
• Fully paid for team socials
• Hybrid working (4 days onsite in North London)
• Opportunity to join at a critical scale-up inflection point

Hiring Process (Typically Completed Within 1-2 weeks

• 30-minute Talent Screening
• 1-hour tech interview
• 2-hour design interview
• 1-hour team & culture fit interview

If you are a Senior Mobile Engineer looking to build apps that reshape an industry, this is a rare opportunity.