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Senior Engineer; MongoDB & AWS Serverless

Job in Cardiff, Cardiff City Area, CF10, Wales, UK
Listing for: LegalAndGeneral
Full Time position
Listed on 2026-09-03
Job specializations:
  • Software Development
    Cloud Engineer - Software, DevOps, AWS, Software Engineer
Job Description & How to Apply Below
Position: Senior Engineer (MongoDB & AWS Serverless)

We are looking for a highly skilled Senior Software Engineer to play a critical role in designing building and evolving our cloud native platforms. You will bring deep technical expertise strong engineering judgement and a customer first mindset to deliver secure scalable and high performing software.

As a senior member of the team you will help shape technical direction reduce complexity and technical debt and continuously improve how we engineer deliver and operate our services. This role has a strong emphasis on AWS serverless technologies and MongoDB operating within a modern Agile engineering environment.

What youll be doing:

  • Owning the design and delivery of high quality software solutions working endtoend across features services and systems to deliver meaningful customer and business outcomes
  • Building and operating cloud native serverless applications on AWS ensuring solutions are secure resilient scalable and optimised for performance and cost
  • Leading by example in applying clean code sound architectural principles and engineering best practices that align with Legal & Generals SSDLC and technology strategy
  • Actively identifying prioritising and addressing technical debt ensuring longterm maintainability reliability and operability of our platforms
  • Defining and influencing test strategies that raise the quality bar with a strong focus on security accessibility usability resilience and nonfunctional requirements
  • Performing and leading high quality code reviews providing constructive feedback that improves code quality system design and team capability
  • Driving continuous improvement in team processes tooling and ways of working fostering a culture of learning accountability and technical excellence
  • Mentoring and coaching engineers within the team supporting their technical growth while encouraging collaboration inclusion and knowledge sharing
  • Keeping pace with emerging cloud data and application technologies identifying opportunities to adopt relevant advancements and sharing insights across the engineering community
  • Ensuring solutions and engineering practices consistently support fair customer outcomes in line with Legal & Generals Customer Experience principles and Treating Customers Fairly policy

Who were looking for:

  • Strong expertise in modern software engineering including clean code clean architecture design patterns distributed systems microservices and cloud native application design
  • Proven experience delivering serverless solutions on AWS with handson use of services such as Lambda API Gateway ECS and infrastructureascode using Cloud Formation and serverless frameworks
  • Deep practical experience with MongoDB including schema design performance optimisation and advanced aggregation pipelines alongside a solid understanding of SQL and other No

    SQL data stores
  • Extensive experience building and maintaining large scale systems using TDD automated testing CI/CD pipelines and containerisation with a clear emphasis on reliability and operational excellence
  • A strong security first mindset with realworld experience in secure application development web and API security threat modelling and compliance in cloud environments
  • Demonstrated ability to solve complex technical problems make sound architectural decisions navigate ambiguity and balance immediate delivery needs with longterm system health
  • Significant experience working in Agile environments (Scrum Kanban) contributing to effective planning prioritisation dependency management and continuous improvement across teams
  • A natural technical leader and communicator who can mentor others facilitate technical discussions collaborate effectively with nontechnical stakeholders and positively influence team culture and outcomes

Whatever your role we reward performance and behaviour with a package that looks after all the things that are important to you. Here are some of the benefits we offer:

  • The opportunity to participate in our annual performance
    -related bonus plan and valuable share schemes
  • Generous pension contribution
  • Life assurance
  • Healthcare Plan (permanent employees only)
  • At least 25 days holiday plus public holidays 26 days after 2 years service. Theres also the option to buy and sell holiday
  • Competitive family leave
  • Participate in our electric car scheme which offers employees the option to hire a brand-new electric car through tax efficient salary sacrifice (permanent employees only)
  • There are many discounts we offer both for our own products and at a range of high street stores and online
  • Were creating netzero carbon workplaces by 2030 by investing in our sustainable modern offices across the UK all designed to bring people together and elevate the inperson experience

#LI-NH1

Additional Information :

At L&G we believe its possible to generate positive returns today while helping to build a better future for all.

If you join us youll be part of a welcoming inclusive culture with opportunities to collaborate with people of diverse backgrounds views and experiences. Guided by leaders with…

Position Requirements
10+ Years work experience
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