Senior Full Stack Engineer (Perm) Typescript

Job title: Senior Full Stack Engineer (TypeScript / / )
Type: Full-time Permanent
Location: UK (flexible home office or hybrid working)
UK offices: Edinburgh Newcastle Leeds Manchester and London
Start date: 23rd March

Please note that to be considered for this role you must be based within 30 miles of one of our UK offices.

What youll do

Youll 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. Its used by senior decision makers so quality and trust are critical.

Youll work end-to-end in TypeScript. Youll build frontend features in and design backend services in .

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.

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

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

Youll contribute to performance readiness including handling traffic spikes during rankings release periods.

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

Youll also support mid-level engineers through reviews good practice and raising engineering standards.

Whats in it for you

Youll build a product where the quality bar is high and visible. This is a premium subscription platform. The difference between okay and excellent matters.

Youll have real ownership. Youll make technical decisions that shape the build not just implement tickets.

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

Youll have influence across squads. Youll help shape how quality and delivery standards are applied across teams.

Youll also get variety. This is the initial project but over time youll 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 you get in return

• 28 days holiday plus bank holidays

• 5 Impact Days per year for learning volunteering or innovation

• Flexible working environment

• Annual wellbeing budget plus two days of wellbeing leave

• Mental health support

• A company supplied Apple Mac
  

What were looking for - required experience

Strong TypeScript experience across frontend and backend
Strong experience building secure production-grade apps
Strong experience building APIs (Express or similar)
Experience with Postgres and data modelling
Experience with async worker patterns and background processing
Experience designing robust API contracts and backend services
Strong attention to UI quality performance and responsive behaviour
Ability to work confidently with clients and internal teams

What were looking for nice to have

Experience integrating with LLM APIs and handling non-deterministic output
Experience building validation and guardrails around generated content
AWS experience and familiarity with Kubernetes-based deployment models
CI/CD experience (CircleCI or similar)

Ready to apply

Apply now and help build premium digital products at hedgehog lab.