Senior Software Engineer - London

Chetwood Bank
London

Senior Software Engineer - LondonSalary: £70,000 - £80,000 / year

About Chetwood Bank:

We’ve been challenging the way financial services firms should operate ever since our launch back in 2016. From day one, we’ve been focused on helping customers underserved by the mainstream banks, creating highly targeted products to meet their specific needs. Today, we focus on mortgage and savings products. We understand real people and their real lives, and our simple, clear approach is designed to help customers make sense of their money. We work hard to make sure customers get the quick and helpful support they need in the moments that matter, when they matter. We’re a secure, stable, and well-funded bank backed by a large investor. We generate funding using retail deposits through our savings brand, SmartSave.

Role Overview

We are seeking a highly skilled and motivated “data-aware” Senior Engineer with a deep focus on software engineering and AWS technologies to join our dynamic Data Platform team. In this role, you will work on designing, developing, and optimizing our modern Lakehouse architecture that seamlessly integrates data ingestion, processing and analytics. You'll be responsible for building scalable, secure, high-performance and configuration-driven data infrastructure, improving data availability and quality, and collaborating with cross-functional teams to drive data-driven decision-making across the organisation.

Key Responsibilities

Building a modern Data Platform:

  • Design and implement components of our Data Platform, based on a Lakehouse architecture
  • Develop tooling and services to support the efficient ingestion, storage, and processing of both structured and semi-structured data in a cloud-native, cost-effective way
  • Ensure data is organised, accessible, and ready for analytical use
  • Implement robust data governance policies, ensuring that the data is accurate, traceable, and compliant with regulatory standards
  • Ensure security best practices are followed, including encryption, data masking, and access control mechanisms

Software Engineering & Cloud Infrastructure:

  • Design and develop high-performance reusable data solutions leveraging AWS cloud services
  • Develop maintainable, and testable code to automate data processing tasks and workflows
  • Contribute to the design and optimisation of cloud-based data systems that scale to handle large volumes of data with minimal operational overhead
  • Focus on ensuring reliability, fault tolerance, and scalability in data systems
  • Build repeatable and automated deployments using infrastructure-as-code and CI/CD tooling

Collaboration & Stakeholder Engagement:

  • Work in partnership with data analysts, product and product engineering teams, and other stakeholders to understand their data needs and ensure the architecture supports data-driven decision-making
  • Participate in code and design reviews, and provide recommendations to other team members
  • Mentor more junior data engineers, help set technical standards and drive the adoption of best practices within the team

Skills, Knowledge and Expertise

  • Deep experience with AWS cloud services, particularly those supporting Lakehouse architectures and their components (e.g. Lambda, S3, Lake Formation, Kinesis, Glue, Step Functions, Athena, EventBridge, SNS, SQS, DynamoDB and the IAM policies that support them all)
  • Proficiency in software development using Python
  • Knowledge of infrastructure-as-code, ideally using Terraform
  • Experience with building and maintaining CI/CD pipelines, particularly using GitHub actions
  • Strong understanding of version control, code reviews, and collaborative development practices (e.g., GitHub, JIRA)


Desirable Skills & Experience:

  • Skilled in data querying with SQL
  • Experience using DBT in Enterprise environments

Benefits

  • Competitive salary
  • 25 days holiday PLUS your BIRTHDAY off
  • Pension contribution with Royal London
  • Life Assurance
  • Private medical, dental and optical health insurance with Axa
  • Hybrid working – Wrexham or Central London
  • Free breakfast available

About Chetwood Bank

We’re a UK-based digital bank dedicated to getting the basics right and offering straightforward savings and mortgages

Data Protection

We anticipate that we will retain your data as part of the recruitment process for no longer than is necessary for the purpose for which it was collected unless we have sought your consent to keep your data for future suitable job vacancies. Cifas The personal information we have collected from you will be shared with Cifas who will use it to prevent fraud, other unlawful or dishonest conduct, malpractice, and other seriously improper conduct. If any of these are detected you could be refused certain services or employment. Your personal information will also be used to verify your identity. Further details of how your information will be used by us and Cifas, and your data protection rights, can be found by Chetwood Bank does not accept speculative or unsolicited CVs from Recruitment Agencies. Any unsolicited CVs received will be treated as the property of Chetwood Bank and Terms & Conditions associated with the use of such CVs will be considered null and void.

Posted 2025-06-30

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