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Senior Back End Engineer UK Based

Kyra
CompanyKyra
CategoryEngineering
LocationUK
RemoteRemote
EmploymentNot stated
LevelSenior
SalaryNot stated by the employer
Posted6 May 2026
Last verified30 Jul 2026
SourceEmployer career page (ashby)
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Description
ABOUT KYRA Kyra is an enterprise influencer marketing platform working with brands like SharkNinja, Coach, H&M, Ray-Ban, and Converse. Our platform manages the full lifecycle — creator discovery, campaign management, content review, payments, analytics, and AI-powered intelligence across TikTok, Instagram, and YouTube. THE ROLE We’re looking for a senior backend engineer with sharp product judgement. You’ll work alongside our engineering lead on a platform that processes millions of creator data points, runs real-time analytics, and powers AI-driven workflows. This isn’t a “wait for a fully-scoped ticket” role. You’ll take ambiguous direction, make calls, and ship features end-to-end — including deploying them yourself. We have infra already; we need someone who can operate inside it confidently, not someone who wants to rebuild it. WHAT YOU’LL ACTUALLY DO • Build and maintain domain modules in a DDD-style Node.js/TypeScript monorepo. • Take vague product direction, sharpen it into a real spec, and ship a v1 — then iterate. • Design APIs, write docs, and manage database schemas and migrations. • Build features that span our main transactional backend and a separate analytics backend running heavy queries over creator data. • Write services that integrate with TikTok, Instagram, and YouTube APIs. • Work with queue workers for background job processing (media analysis, outreach, data syncing). • Deploy your own services to our cloud infrastructure, write the migrations, watch them go out safely. • Investigate production issues when they touch your code — trace through the observability stack to find the cause. REQUIRED — NON-NEGOTIABLE • 6+ years backend development with Node.js and TypeScript in production. • Product mindset — you’ve shipped features where the brief was a paragraph, not a ticket. You ask why before how, make calls when requirements are vague, and iterate after release. You’ve sat across from non-engineers and left with a sharper problem than you walked in with. • Strong relational database experience — schema design, query optimisation, safe migrations at scale. • Comfortable deploying and operating your own services on a major cloud provider — containers, CI/CD pipelines, the basics of running things in production. You don’t need to be an infra specialist, but you don’t need handholding either. • Queue-based background job processing patterns. • REST API design and documentation. • Git workflow maturity — branching strategies, code review, migration safety. You understand why you don’t run destructive commands on a production migration. STRONGLY PREFERRED • Shipped AI features to production — you know what evals are for, why prompts regress, and why “it worked in testing” isn’t enough. • Columnar / analytics databases for heavy aggregate queries. • In-memory caching and session stores. • DDD or domain-driven design — explicit module boundaries, repositories, services, event-driven patterns. • Production observability — you’ve triaged real issues, not just configured dashboards. • OAuth, OTP, or session-based auth systems in production. NICE TO HAVE • Social media platform APIs (TikTok, Instagram, YouTube). • Search infrastructure for large datasets. • Monorepo tooling and workflows. • Side projects, OSS contributions, or tools you’ve built for yourself that other people now use — signal that you ship for the love of shipping. WHAT THIS PERSON LOOKS LIKE • Holds opinions and changes them fast — you’ll ship the wrong thing sometimes and replace it a week later. That’s the job. • Debugs across boundaries — when a metric shows the wrong number, you can trace it from the frontend component through the API layer down to the database query and figure out where it breaks. • Writes code that doesn’t need babysitting — proper validation, error h
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Senior Back End Engineer UK Based — Kyra · Job Opportunities API