Millie Watts

Engineering Manager at Cinder Finance · API platforms · Django, rate limiting

Cinder Finance

London, UK · GMT (UTC+0)

6+ years experience

London School of Economics

English

Messaging unavailable

Overview

I've spent 6 years on API platforms - first at Just Eat Takeaway, now at Cinder Finance. Shipped 15 launches on the public API team without a rollback. Swimming before work keeps me sane.

Good reasons to reach out

Questions about API platforms

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Crypto token projects
Requests to fix your code for free

Skills

DjangoPostgreSQLPythonrate limiting

Experience

Engineering Manager
May 2026 - Present
Cinder Finance · 5 mo · Full-time · London, UK
- Wrote the Django service that now handles 17 million requests a day.
- Shipped 11 launches on the public API team without a rollback.
- Grew the public API team from 4 to 20 engineers.
Backend Engineer
Jun 2024 - May 2026
Wise · 1 yr 11 mo · Full-time · London, UK
- Brought on-call pages for public API down from 30 a week to 1.
- Cut p99 latency on the public API services from 302ms to 82ms.
Backend Engineer
Feb 2021 - Jun 2024
Just Eat Takeaway · 3 yr 4 mo · Full-time · London, UK
- Moved 75% of public API traffic off a legacy monolith without a customer-facing incident.

Projects

Conference talk: lessons from public API

2022

What went wrong and what worked while scaling API platforms.

References

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Education

London School of Economics
BSc, Information Technology
2017 - 2020

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