Backend Engineer III

monzoreferrals; United States; Hybrid; USD 112,000 - 145,000; Full time

Benefits offered by this job

Visa sponsorship

UK relocation support

Flexible hours

Annual learning budget

UK remote flexibility

Job summary

monzoreferrals is seeking a senior backend engineer to help build and evolve its in-house banking platform. The role spans infrastructure, security, payments, financial crime, and data, with flexible working options across the UK.

You will design and develop backend services powering everyday banking features, collaborate with product and data teams, and operate services on container orchestration infrastructure while embracing a product mindset focused on customer outcomes.

Qualifications

• Experience building production-ready backend services.
• Ability to operate in ambiguity with shifting priorities.
• Interest in distributed systems, resilience, and reliability.
• Familiarity with strongly-typed languages (Go/Java/Scala).
• Product mindset focused on customer outcomes.
• Experience in regulated financial products is a plus.

Responsibilities

• Design and develop backend services powering banking features.
• Collaborate with product, data, and platform teams to deliver outcomes.
• Build resilient distributed systems using asynchronous messaging and event-driven patterns.
• Operate and evolve services on container orchestration infrastructure.
• Make data-informed decisions to improve customer experience.
• Participate in system design discussions, pairing, and code reviews.

Skills

Backend engineering

Distributed systems

Go/Java/Scala

Product mindset

Ambiguity handling

Tools

Go

Cassandra

Kafka

Kubernetes

Docker

AWS

GCP

Envoy

React

Job description

Role overview

A digital banking organisation is hiring a senior backend engineer to help build and evolve its in‑house banking platform. The engineering organisation spans roughly 650 people working across disciplines, tackling challenges that range from customer‑facing products through to infrastructure, security, payments, financial crime, and data. The role suits someone who wants broad impact and is comfortable working across a regulated financial product, with flexible working options across the UK.

Responsibilities

• Design and develop backend services that power everyday banking features


• Collaborate with product, data, and platform teams to deliver end-to-end outcomes


• Build resilient distributed systems using asynchronous messaging and event‑driven patterns


• Operate and evolve services running on container orchestration infrastructure


• Make data‑informed decisions that improve customer experience


• Participate in technical discussions including system design, pairing, and code reviews

Requirements

• Strong backend engineering experience on a production technology product


• Comfort working in teams that navigate ambiguity and shifting priorities


• Interest in distributed systems, resilience, and writing reliable software


• Familiarity with a strongly‑typed language such as Go, Java, C, or Scala


• A product mindset focused on customer outcomes


• Genuine enthusiasm for a product used daily by a large customer base

Nice to have

• Hands‑on exposure to Go, Cassandra, Kafka, Kubernetes, Docker, Envoy, AWS, or GCP


• Experience building public web apps or internal tooling with React

Benefits and work setup

• £85,000–£110,000 base salary plus performance‑linked incentive awards


• London headquarters with UK‑remote flexibility and reimbursed travel for occasional in‑person gatherings


• Visa sponsorship and UK relocation support available


• Flexible hours and part‑time arrangements considered where feasible


• £1,000 annual learning budget for books, training courses, and conferences


• Structured interview process averaging around four weeks: an initial call, a take‑home task or pair coding exercise, and a final round covering system design and behavioural fit