Role overview

Senior Back End Engineer UK Based

Requirements and responsibilities

Readable role content extracted into sections for faster review.

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 haves

  • 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 handling, and patterns other team members can follow.
  • Communicates proactively — posts in Slack when deploying, writes migration plans before running them, documents API contracts for the frontend team.
  • Moves fast without breaking things — we deploy to production multiple times a week. You should be comfortable with that cadence while still being careful.
Similar roles

Keep a backup shortlist.

Browse stack
FocusSenior Backend EngineerRole area
Seniority signalSeniorCandidate level
StackCI/CD, Java, Node.jsPrimary skills
Location1 accepted countryEligibility

Stack

Use these tags to compare similar remote roles.

Location eligibility

Candidates should apply only when their profile country is listed here.

Your profileCountry not setSign in to check your country against this role.

Hiring flow

WithMira shows the role, then sends candidates to the company application.

1Check role fit, stack, and location eligibility in WithMira.
2Open the company application page from the tracked apply link.
3Save the role or subscribe for similar opportunities before leaving.
Apply on company siteCompany siteOpen link