Full Stack Engineer

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Haystack

Full Stack Engineer

£50k

-

£60k

Newcastle upon Tyne

Hybrid

Graduate
Junior
Mid
Senior
Leader

Description

Hybrid requirements: 2 days per week in the office.
About the Company
Our website uses big data, analytics, and machine learning to aggregate the best products and prices from a range of partners. We save our customers time and money by displaying the best deals and expert product guides in one convenient place.
Our Technology
The technology that drives our business is composed of multiple microservices. These include data ingestion pipelines and APIs written in C#, a frontend website using Node.js + Next.js (React), and large machine learning models that help determine attributes like product type and colour from imagery. We also have various services for alerting users to the best deals and much more.
Responsibilities
Assist our technical lead with all aspects of our back-end systems. We use AWS and Kubernetes with MongoDB. This role offers significant learning opportunities with cutting-edge technology.
A key part of this role will be helping to maintain our data feed service. This includes developing new ways to ingest data, maintaining the service, and ensuring optimal data ingestion.
Participate in code reviews to maintain code quality and ensure best practices.
Contribute to documentation (project briefs, technical specifications, etc.) as needed.
Keep up to date with industry trends and developments.
Update work schedules and perform troubleshooting as required.
Be transparent with the team about challenges, failures, and successes.
Maintain an approach of continuous improvement, optimising for maximum performance, scalability, and responsiveness.
Requirements
Excellent technical, diagnostic, and troubleshooting skills.
Strong leadership and organisational abilities.
Willingness to build professional relationships with colleagues and clients.
Excellent communication, motivational, and interpersonal skills.
Desirable Experience
Node.js
C# (.NET 7)
Next.js
ReactJS
MongoDB
Git
CSS
HTML
JavaScript
AWS
Kubernetes

Role tech stack

csharp
C#
nodejs
Node.js
nextjs
Next.js
javascript
JavaScript
mongodb
MongoDB
react
React
aws
AWS

Culture overview

At Haystack we work like the product we build – fast, transparent and signal-driven. We trust people to own their work and give them the space to ship without red tape. Ideas win on merit, not job titles. We’re remote-friendly but tightly connected, using daily async stand-ups and quick calls when it matters. Feedback flows openly, experiments happen daily, and learning is built into the job. Everyone here cares about craft – whether that’s clean code, crisp design or clear communication – and we back each other to keep raising the bar. We celebrate wins, own mistakes and move on quickly. If you like autonomy, impact and a team that genuinely roots for each other, you’ll feel at home at Haystack.

Employee benefits

Flexible Hours
Flexible Working
Free Parking
Laptop
Learning Allowance
Learning/Development days

Office vibe

Beer Fridge
City Centre
Free Coffee
Social Events
Team Building Days

Location

Leadership

Mike Davies
Co-founder

Tech overview

Haystack is a real-time marketplace connecting 150k+ tech professionals with teams they actually want to join. Our AI-driven matching crunches millions of data points to surface the right people in seconds, while Verified Candidates come pre-screened and interview-ready with 80% shortlist rates. Behind the scenes we run a live, event-driven platform built with TypeScript/Node, React, GraphQL, MongoDB and AWS—shipping fast with vector search, embeddings and microservices powering instant alerts and 24–48h interview booking. If you love distributed systems, data pipelines and building products people genuinely want to use, this is the place to do it.

Engineering principles

Agile Process
Code Reviews
Continuous delivery
Continuous Development
Mentoring
Rapid release cycles
Scrum
Unit testing

Company tech stack

aws
AWS
graphql
GraphQL
mongodb
MongoDB
nodejs
Node.js
react
React
react-native
React Native
typescript
TypeScript
Haystack
Full Stack Engineer
£50k - £60k
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