Hello, my name is

Le Danny Yang

I'm a Senior Software Engineer based in London.

About me

Hello! I'm Le Danny, a Software Engineer based in London, who enjoys building things that live on the internet. I'm a backend developer who strives to build robust software with the help of design patterns and good practises.

Fast learner, proactive and easy-going person by nature.

Skills

Here are a few technologies I've been working with:
Functional Scala Scala Cats Effect doobie circe fs2 streams http4s GCP Kubernetes Docker Terraform Kafka DataDog Microservices TDD Mockito SBT DynamoDB PostgreSQL AWS CircleCI GitHub Actions ArgoCD FluxCD BigQuery

Experience

  • Ovo Energy, London (May 15, 2021 - Present)

    Promoted to Senior Software Engineer

    Designing and implementing Energy Rebate scheme for OVO https://www.gov.uk/government/publications/energy-bills-support-scheme-payments-made-by-electricity-suppliers-to-customers by creating all the infrastructures via Terraform. This delivered more than a billion pounds across all OVO customers during 2022/2023.

    Allowing customers to apply for the Warm Home Discount scheme by successfully creating a State Machine where all the customer applications will go through and sending comms (email, post, sms) whenever is required during the lifecycle of those applications. https://www.ovoenergy.com/guides/energy-guides/warm-home-discount-scheme

    Building an internal UI for supporting and managing applications in order to speed up the process in an intuitive and easy-to-use way.

    Implementing a solution to deliver payments to OVO customers via Post Office vouchers

    Creating an alternative approach when applying for WHD scheme by generating a temporary token.

    Implementing metrics via DataDog to check the correctness of the system, whether applications have been transitioning correctly or not. Includes alerts to notify the teams in case of wrong behaviour.

    https://www.ovoenergy.com


  • Ocado Technology, London (January 13, 2020 - May 15, 2021)

    Providing Ocado's retailers the ability to automate their supply chain logistic process and track all orders they can place.

    Providing the Geospatial intelligence underpinning the Ocado Smart Platform. From geocoding our customers’ locations and calculating the fastest way to navigate to them, to managing the geography of our clients’ delivery, retail, and e-commerce operations.

    Allowing Sobeys Inc. to modify routes avoiding specific toll roads in order to save massive costs on their day-to-day deliveries.

    Creating robust code following testing best practises from Unit Test, Component Test, Integration Test and Load Test to achieve and fulfil strict SLAs. Testing coverage must meet 100%.

    Leading various in-team and cross-team sessions acting like the main source (Retrospective, Sprint Planning, Backlog Grooming, Discovery).

    Actively being part in multiple knowledge sharing sessions, either in-team and cross-team ones (GraphQL, DynamoDB).

    https://www.ocadotechnology.com/


  • Universitat Politècnica de Catalunya (September 1, 2018 - September 15, 2019) - Master Degree in Computer Science.

    Multilingual Android Chat Application with Kotlin. This project lets all people from every language have a chat with each other using Google Realtime Translation, Firebase and TensorFlow library for detecting objects through images.

    Further information click on this link.

    www.upc.edu


  • Gentrack UK Ltd, London (December 11, 2017 - August 13, 2018)

    Software Solutions for Energy and Gas billing. Creating new features for its own utility software and continuously improving their software.
    (Java + MySQL)

    www.gentrack.com


  • Universitat Politècnica de València (2013 - 2017) - Bachelor Degree in Computer science.

    www.upv.es

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