Job Title

Night Zookeeper is a London-based ed‑tech company on a mission to make reading and writing fantastically fun through a gamified platform for children aged 6-12.Salary: £60,000-£70,000 per annum (depending on experience)Founded in 2012 in London by Joshua Davidson and Paul Hutson, Night Zookeeper has grown into a leading children’s brand offering a web-based learning program, a best‑selling book series, and an animated TV series. Their platform uses game‑based learning, storytelling and tutor‑feedback to help children develop literacy skills and creativity.Over a million children worldwide have used the platform across tens of thousands of schools. The program combines writing challenges, character creation, and curated tutor feedback to boost engagement and learning.Role OverviewAs a Senior Full‑Stack JavaScript Developer, you will:Design, build, and enhance scalable frontend and backend systems within the core product (e.g. writing platform, dashboards, games, tutor and admin interfaces)Plan architecture and technical work across the JavaScript stackDevelop clean, maintainable, and testable code using modern practices and frameworksCollaborate closely with product/design/education teams to ensure features support pedagogical goalsMonitor and optimize performance, reliability, and accessibilityParticipate in planning, code reviews, deployment workflows, and continuous integration pipelinesLead projects and record progress on project management systems, as well as in meetings with the teamRole ResponsibilitiesArchitect and implement new full‑stack features in JavaScript across frontend and backend layersMaintain and extend scalable APIs and microservicesOptimize UI/UX for high interactivity, creativity tools, and responsive performanceDrive best practices including code reviews, automated tests (unit/integration), documentationEnsure data privacy, performance, and reliability in line with GDPR and education standardsExperience and SkillsEssential:≥5 years professional experience with JavaScript/TypeScript in full‑stack rolesStrong frontend skills: React, state managementBackend development: Strong expertise in Node.js, GraphQL and NoSQLExperience scaling and optimising complex web applicationsExpert level with version control workflows (Git), CI/CD pipelines (Github Actions, Cloud build)Excellent communication and collaborative teamworkDesirable:Experience developing native iOS applications (or using capacitor / cordova)Experience in the ed‑tech or kids’ entertainment spaceFamiliarity with gamification techniques and rich interactive UIsExposure to UX for child-centric applications, accessibility standardsKnowledge of analytics tools for educational tracking and dashboardsExperience working in agile or hybrid DevOps environmentsWhy Join Night Zookeeper?Join a fast‑growing, London-based, award-winning ed‑tech company (BAFTA‑nominated, BETT awards) with a global mission to foster children’s creativity and literacyOpportunity to work on game-based learning products that have real educational impact (millions of words written, thousands of stories created)Be part of cross‑functional, mission-driven teams contributing to product design, education and creative learningSenior role with ownership, responsibilities, and a meaningful stake in technical decisionsAdditional DetailsLocation: London (hybrid and remote flexibility)Reporting to: CTOStart Date: Flexible; immediate availability preferredWhat We OfferA competitive salary and benefitsA team-oriented, forward-thinking company cultureOpportunities for professional developmentThe chance to make a real difference in children's educationHow to ApplyPlease include:CV and portfolio of relevant JavaScript-based full‑stack projects linked to your Github accountExamples of scalable web applications, ideally including interactive or gamified UIBrief note on why you’d love contributing to a children’s literacy and creativity platformLet us know what magical animal you would be Night Zookeeper is an equal opportunity employer and encourages all qualified candidates to apply. If you are organised, motivated, and passionate about creating educational solutions, then we would love to hear from you.Please Note: Only shortlisted candidates will be contacted.2011-2025. Wonky Star LtdRegistered Company No. 07706300