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Senior Backend Engineer

MonzoRemote
Remote, Remote
65000 - 115000
Posted August 6, 2025
Any Experience

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Job Description

Senior Backend Engineer

Location: Remote (UK) - Cardiff, London or Remote

About Monzo

Monzo is on a mission to make money work for everyone. We're revolutionizing banking by simplifying financial management and providing transparent, user-friendly experiences. Since our beginnings as a prepaid card, we've expanded our product offerings significantly over the past decade.

About the Role

We are seeking a talented and passionate Senior Backend Engineer to join our growing team. You will play a key role in designing, developing, and maintaining our robust and scalable backend infrastructure.

Responsibilities:

  • Design, develop, and implement new features and functionalities for our backend systems.
  • Collaborate with cross-functional teams to ensure seamless integration and delivery.
  • Write clean, maintainable, and well-documented code.
  • Participate in code reviews and contribute to best practices.
  • Monitor system performance and identify areas for optimization.

Qualifications:

  • Proven experience as a Backend Engineer with a strong understanding of software development principles.
  • Expertise in relevant programming languages (e.g., Go, Python, Java).
  • Experience with relational and NoSQL databases.
  • Familiarity with cloud computing platforms (e.g., AWS, GCP).
  • Excellent problem-solving and analytical skills.

Qualifications

Essential:

  • 5+ years of experience building and maintaining robust, scalable backend systems.
  • Strong proficiency in a relevant programming language (e.g., Go, Python, Java).
  • Experience with relational and NoSQL databases.
  • Familiarity with cloud platforms (e.g., AWS, GCP, Azure).
  • Understanding of API design and development principles.
  • Excellent problem-solving and debugging skills.
  • Passion for writing clean, maintainable code.

Desirable:

  • Experience with financial services or fintech.
  • Knowledge of microservices architecture.
  • Familiarity with CI/CD pipelines.
  • Contributions to open-source projects.
  • Experience working in an agile environment.

Key Responsibilities

  • Design, develop, and maintain robust and scalable backend systems for Monzo's core banking platform.
  • Collaborate with product managers, designers, and frontend engineers to deliver high-quality features and improvements.
  • Write clean, well-documented, and testable code adhering to best practices and coding standards.
  • Participate in code reviews and contribute to the continuous improvement of the engineering team's processes.
  • Identify and resolve performance bottlenecks and ensure system stability and reliability.
  • Stay up-to-date with the latest technologies and trends in backend development.
  • Mentor junior engineers and contribute to a positive and collaborative team environment.

Selection Process

Monzo - Senior Backend Engineer Hiring Workflow

1. Application Review: AI-powered screening analyzes resumes and cover letters against pre-defined criteria, focusing on technical skills, experience, and cultural fit.

2. Initial Screening Call: Short phone call with a recruiter to assess communication skills, motivation, and initial fit.

3. Technical Assessment: Candidates complete a coding challenge designed to evaluate problem-solving abilities and proficiency in relevant technologies.

4. Technical Interview: In-depth discussion with senior engineers, focusing on technical expertise, design patterns, and past projects.

5. Culture Fit Interview: Conversation with a team member to assess cultural alignment and collaborative style.

6. Final Interview: Meeting with the hiring manager to discuss career goals, team dynamics, and next steps.

7. Offer & Onboarding: Successful candidates receive a competitive offer and embark on a comprehensive onboarding program.

How to Apply

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Ensure that your contact information is correct and up-to-date, and accurately reflect your qualifications and experience.

Important Note

Submitting an application with incorrect or incomplete information could harm your chances of being selected for an interview.

About Monzo

About Monzo

Monzo is on a mission to make money work for everyone. We're shaking up the traditional banking world, ditching the complexity and confusion for a transparent, user-friendly experience.

Starting as a prepaid card, Monzo has evolved into a full-fledged digital bank, offering a suite of innovative financial products designed to empower our customers. We believe in putting people first, fostering a culture of transparency, and using technology to create a fairer, more inclusive financial system.

Join us and be part of a team that's redefining what a bank can be.

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