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Senior backend engineer

Cardiff
Monzo
Engineer
€110,000 a year
Posted: 20 May
Offer description

Overview

Monzo is a digital bank built by about 400 engineers. We design and build an in‑house banking platform that powers products used by millions. Our squads span core banking, payments, security, and more, working across disciplines from product to data science.


Responsibilities

As a backend engineer you will collaborate with product managers, designers, mobile and web engineers, and data analysts to build and maintain the services that power the Monzo experience. You will design API endpoints, write resilient distributed systems, and help drive the architecture of our platform.


Qualifications

* Strong experience building backend services for a technology product.
* Product mindset – care about customer outcomes and make data‑informed decisions.
* Comfortable working in an ambiguous, cross‑functional team.
* Interest in distributed systems and writing resilient software.
* Experience with strongly‑typed languages such as Go, Java, C, Scala, etc.
* A willingness to learn and be excited about the work we do.


Technologies you’ll be working with

* Go for application code.
* AWS for most infrastructure and GCP for data.
* React for public web apps and internal tools.
* Interaction with physical datacentres and third‑party connections.


The interview process

* Initial call.
* Take‑home task or pair‑coding exercise.
* Final interview – system design and behavioural interview.


Compensation & benefits

* £95,000 - £130,000 base salary plus incentive awards.
* Relocation assistance to the UK and visa sponsorship.
* 8‑week paid parental leave for both parents at entry level.
* 32 paid holidays (including public holidays).
* Flexible working hours and a culture of trust.
* Professional learning budget of £1,000 per year.
* Full benefits package including health, dental, and life insurance.


Equal opportunity employer

Monzo is an equal‑opportunity employer. We consider all applicants without regard to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity or disability status.

If you have a preferred name, please use it to apply.

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