Application Guide

How to Apply for Senior Software Engineer, Payments & Fraud

at Lime

🏢 About Lime

Lime is a leader in micro-mobility, offering eco-friendly shared scooters and bikes in cities worldwide. Working here means contributing to sustainable urban transportation while tackling complex engineering challenges at scale.

About This Role

As a Senior Software Engineer on the Payments & Fraud team, you'll own the customer payment experience and build fraud prevention systems that protect the platform. This role directly impacts Lime's financial health and user trust, processing millions of transactions.

💡 A Day in the Life

You'll start by reviewing dashboards for payment success rates and fraud alerts, then collaborate with product managers on new features. Afternoon might involve coding a new fraud heuristic or debugging a transaction issue with the data science team.

🎯 Who Lime Is Looking For

  • 6+ years of software development with a focus on building scalable, high-impact products or systems.
  • Proven experience integrating external payment gateways or financial services (e.g., Stripe, Adyen) to deliver customer outcomes.
  • Data-driven mindset with ability to analyze transaction data, design experiments, and use metrics to guide decisions.
  • Excellent communication skills to collaborate across engineering, product, data science, and finance teams.

📝 Tips for Applying to Lime

1

Highlight specific projects where you built or scaled payment systems or fraud detection models.

2

Quantify your impact: mention transaction volumes, fraud reduction percentages, or uptime improvements.

3

Show your data-driven approach: describe how you used data to make decisions or measure success.

4

Tailor your resume to emphasize experience with external service integrations and cross-team collaboration.

5

Mention any experience with AI/ML tools for fraud detection, as the role involves experimenting with modern AI.

✉️ What to Emphasize in Your Cover Letter

['Your passion for building reliable, secure payment systems at scale.', 'Experience with fraud prevention and data-driven decision making.', 'Ability to collaborate with diverse teams (product, data science, finance) to ship complex projects.', "Excitement about Lime's mission to reduce carbon emissions through shared mobility."]

Generate Cover Letter →

🔍 Research Before Applying

To stand out, make sure you've researched:

  • Read Lime's engineering blog for insights into their tech stack and culture.
  • Understand Lime's business model: how payments and fraud impact unit economics.
  • Review recent news about Lime's expansion and any fraud-related challenges in micro-mobility.
  • Familiarize yourself with common fraud patterns in the sharing economy (e.g., stolen accounts, payment disputes).

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Design a fraud detection system for a high-volume payment platform.
2 How would you handle a payment integration failure at scale?
3 Describe a time you used data to influence a product decision.
4 How do you prioritize competing features when working with multiple stakeholders?
5 Explain your experience with payment gateways and handling sensitive financial data.
Practice Interview Questions →

⚠️ Common Mistakes to Avoid

  • Not emphasizing data-driven outcomes or metrics in your past work.
  • Failing to show experience with external service integrations (e.g., payment APIs).
  • Overlooking the importance of cross-functional collaboration – this role works with many teams.

📅 Application Timeline

This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.

Typical hiring timeline:

1

Application Review

1-2 weeks

2

Initial Screening

Phone call or written assessment

3

Interviews

1-2 rounds, usually virtual

Offer

Congratulations!

Ready to Apply?

Good luck with your application to Lime!