Senior Full Stack Engineer (Contract) - Typescript / Next.js / Node.js

hedgehog lab

Leeds

On-site

GBP 60,000 - 80,000

Full time

14 days+

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Job summary

A digital product agency is seeking a Senior Full Stack Engineer with profound experience in TypeScript, Next.js, and Node.js to work on a premium subscription platform for Times Higher Education. This role entails significant ownership of both frontend features and backend services, ensuring high quality, security, and performance. Candidates should be adept at client collaboration and leading mid-level engineers while also enjoying a flexible working arrangement in the UK with opportunities to shape long-term technical decisions.

Qualifications

Strong experience in TypeScript for both frontend and backend.
Experience with building secure applications using Next.js.
Node.js experience to design robust APIs.
Ability to model data effectively with Postgres.
Experience with asynchronous processing and worker patterns.

Responsibilities

Deliver a high-quality web product for Times Higher Education.
Build frontend features and design backend services.
Shape data delivery, enrichment, and security.
Support mid-level engineers through reviews and technical guidance.

Skills

TypeScript experience

Next.js experience

Node.js experience

Postgres knowledge

async worker pattern

UI quality attention

Tools

AWS

Kubernetes

CircleCI

Job description

Overview

Job title: Senior Full Stack Engineer (TypeScript / Next.js / Node.js / AWS)

Type: Full-time, Contract

Location: UK (flexible home, office, or hybrid working)

UK offices: Edinburgh, Newcastle, Leeds, Manchester and London

Start date: 23rd March

What You’ll Do

You’ll join hedgehog lab as a Senior Full Stack Engineer. Your first engagement will be delivering a premium, subscription-based web product for our client, Times Higher Education. It’s used by senior decision makers, so quality and trust are critical.

You’ll work end-to-end in TypeScript. You’ll build frontend features in Next.js and design backend services in Node.js.

The core data already exists. Your job is to shape how it is delivered, enriched, and served in a way that feels secure, scalable, and premium.

You’ll take ownership of API design and data modelling. You’ll help define how caching works and how static page payloads are structured.

You’ll build and improve async processing that enriches data using LLM calls. You’ll design validation and guardrails to ensure output is safe, consistent, and production-ready.

You’ll contribute to performance readiness, including handling traffic spikes during rankings release periods.

You’ll work closely with the client engineering team and influence the delivery approach. You’ll help ensure the solution is maintainable and can be owned by the client long-term.

You’ll also support mid-level engineers through reviews, good practice, and raising engineering standards.

What’s In It For You

You’ll build a product where the quality bar is high and visible. This is a premium subscription platform. The difference between “okay” and “excellent” matters.

You’ll have real ownership. You’ll make technical decisions that shape the build, not just implement tickets.

You’ll work on modern full stack TypeScript, plus AI-driven enrichment pipelines that require strong validation and QA thinking.

You’ll have influence across squads. You’ll help shape how quality and delivery standards are applied across teams.

You’ll also get variety. This is the initial project, but over time you’ll work across different clients, industries, and delivery challenges.

If you want a role where you can lead by example, own technical decisions, and ship high-trust products, this is it.

What We’re Looking For – Required Experience