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Volt Africa has an opportunity for an innovative and skilled Full-Stack Developer. The person will work with our high performing teams of technology experts to develop software in an agile environment for major digital brands in the media industry, using Open Source technologies and a mix of cutting edge Front-End JavaScript frameworks. The developer will lead a team of junior and mid-level developers, and work in project environments at client sites, both in an integrated team of developers, designers, content producers, sales and digital experts and independently, to deliver enhancements and features as requested by the Product Owner, as well as ad-hoc fixes to existing functionality.

ABOUT US CoGrammar, which powers HyperionDev, is an ed-tech startup that is dedicated to closing the global tech skills gap. We achieve this by integrating human code review into the world's leading businesses. HyperionDev/CoGrammar also have their own edtech product (HyperionDev Coding Bootcamps) helping learners from over 40 countries in changing into fulfilling tech careers. HyperionDev is the largest tech education provider in Southern Africa.  We are recognised as one of the top ed-tech startups in Europe, Middle East, and Africa, being selected as one of the top ten startups in the UK by Tech Nation, and winning 2nd place in the London TechCrunch Pitchoff. In 2016 we won financial backing from Facebook, as the first prize winner in Facebook's Innovation Challenge, with Facebook selecting us as the most socially impactful startup operating in Africa. We were originally launched from the University of Cambridge by Computer Science graduates and our senior leadership comprises world-leading talent out of places such as Google, Amazon, 2U, Yoco, Groupon and PwC. We're a people-first company with a purpose that underlines everything we do. We're obsessed with the potential in people and challenge them to do their best work. We embrace a culture of growth and learning to deliver on our vision and ours is a relentless quest for improvement. ABOUT THE ROLE  As a Freelance Code Reviewer at HyperionDev / CoGrammar, you should ideally be experienced in carrying out technical, high-quality code reviews and would possess strong programming skills in one or more of the following: Java JavaScript React Databases (SQL) APIs Spring Express UI / UX Python HTML / CSS C / C++ iOS development (Swift) PHP Pandas / Matpotlib / similar skill Statistics and R Machine learning Excel / VBA In this role you would be a member of our freelance code reviewer network. This is a network of technical experts who can review code in a variety of contexts, both education and business. Reviews can range from a quick 10-min feedback session on a basic piece of code, to a 1-hour technical interview with tech job applicants. To fit this role, you must be driven by a hunger for excellence. You must possess an uncompromising and critical attitude when it comes to code quality, and have a passion for people development. You should be technically capable and confident to advise on code reviews, offering a supportive and educational experience to the individual/s you are assessing. You should strive to improve the code’s quality, structure, readability, and efficiency in a systematic manner.  Are you excited by the enormous impact this work can and will have in assessing and improving the quality of code around the world? Then this role is for you!  RESPONSIBILITIES As a Code Reviewer, you not only fill one of the most key roles in our organisation, you define what we do. In this role, you will be responsible for completing, and will own the quality of, the technical code reviews we provide to our international partners (some of the biggest brands in technology, recruitment and education headquartered in the US, UK and Europe). A growth mindset is essential because at any point in time, you could be invited to work on an advanced-level curriculum or a new technology stack in order to meet the requirements of our partners. Therefore, continuous training, further learning and specialisation will be an integral part of this role.

We are looking for a Backend Software Engineer to help us build tools to provide farmers across the globe with timely and accurate estimates of what they can expect to produce at harvest. These estimates include key information like fruit size, mass and colour that help farmers make critical decisions about how they manage their orchards, plan their harvests and sell to the market. Your contribution would consist of making impactful design decisions around infrastructure & architecture as well as being an important individual contributor - writing application code and getting your hands dirty. This Would Involve Working closely with our data scientists on integrating new machine learning models into our data processing pipelines. Building APIs to allow clients (external & internal) to access complex & rich datasets Improving efficiency, reliability and scalability of the system as a whole, taking cost and utilisation into account Occasional frontend product related features where necessary (bonus)