Principal Backend Engineer

Monzo Bank

Principal Backend Engineer providing hands-on engineering leadership at Monzo tackling complex systems and technical challenges in a remote UK position.

Posted 4/27/2026full-timeCardiff • 🇬🇧 United KingdomLeadWebsite

About the role

Key responsibilities & impact

Partner with and guide Engineering and Product Leaders to shape the technical and product direction of Monzo
Remain hands-on in both coding and architecture where it adds the most leverage, especially in complex, high-risk or novel areas
Actively identifying high-leverage opportunities for Monzo and setting the direction of Engineering effort towards the most impactful outcomes.
Mobilise teams across Monzo around high-impact problems, creating clarity, alignment and momentum
Lead and influence architectural direction for the most complex systems, driving consistency and reuse across domains
Set and uphold a high bar for technical excellence across Monzo
Proactively mentor, sponsor and develop senior engineers and future leaders

Requirements

What you’ll need

You have a track record of leading complex, high-impact systems and driving technical direction across multiple teams, domains or business areas
You think in multi-year horizons to look around corners and build for the future, identifying opportunities before they present themselves
You combine strong technical judgment with product and business awareness, making pragmatic trade-offs
You’ve worked on large scale backend, distributed or data-intensive systems
You’re comfortable operating in ambiguous problem spaces, helping teams define direction and execute
You influence and align the most senior stakeholders across engineering, product and beyond
You care about outcomes and impact, using data to guide decisions and to iterate
You enjoy mentoring and raising the bar for other engineers

Benefits

Comp & perks

£1,000 learning budget each year to use on books, training courses and conferences.
We will set you up to work from home; all employees are given Macbooks and for fully remote workers we will provide extra support for your work-from-home setup.
Health insurance
We’ll help you relocate to the UK.
We can sponsor your visa.
Flexible working hours and trust you to work enough hours to do your job well, and at times that suit you and your team.
Plus lots more! Read our full list of benefits.

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

codingarchitecturetechnical directionbackend systemsdistributed systemsdata-intensive systemstechnical judgmentpragmatic trade-offsdata-driven decision makingmentoring

Soft Skills

leadershipinfluencealignmentclarityproblem-solvingcommunicationteam mobilizationstrategic thinkingoutcome-focusedmentorship