OVO Tech Blog

Our journey navigating the techosphere

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OVO Tech Blog

Our journey navigating the techosphere


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WFH Engineering Diaries - #2 🏡

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WFH Engineering diaries #2 with Teodora Danciu. Teodora has given us an insight into her life from home including her Master Chef style cooking skills and workout tools. Whats your role here at OVO and what does your team do? I'm a Scala developer in Orion Pay…

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WFH Engineering Diaries - #1 🏡

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Over the course of the next few months, once a week, I’m going to be delving into the working from home lives of our Engineers. First up is Mike Wallace, a Software Engineer who has joined Rob Gillies team in Kaluza based in Bristol. Tell us about your posit…

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Living the type-safe, well-documented REST API dream with TypeScript + Fastify

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An intro to writing REST APIs that combine TypeScript + Fastify web framework + some other neat projects for code, API documentation and schema validation that’s all kept in sync with static types…

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aws lambda stepfunctions monitoring

Monitoring Step Function based workflows

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I'm an engineer for the Orion Migrations team. The job we do as a team is to allow seamless as possible migration of users and all their data from a legacy system to the Orion platform. This is something which sounds simple at first but becomes more complicate…

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ux design user research

Mapping a service from the inside out

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This is a post I wrote 2 months after joining OVO as a designer. It tells the story of how I mapped the service OVO Retail provides and met an awesome set of colleagues in the process.…

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Bayesian Optimisation for improving model performance

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Hello whoever is reading this, I'm here with a data science themed blog post for anyone interested in adding a new tool to their predictive modelling/ML toolkit. This post will focus on hyperparameter optimisation - these are the parameters of modelling techni…