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Lead Software Engineer - MongoDB / Node.js / JavaScript 

As a Lead Engineer, you’ll play a pivotal role in shaping the technical direction of the product. You’ll guide a talented squad of engineers, drive architectural decisions, and deliver scalable backend systems that directly impact thousands of users.

This is a hands-on leadership role where you’ll balance technical excellence with mentorship, collaboration, and strategic thinking.

What You’ll Be Doing

Technical Leadership

Set the technical direction and lead architectural decision-making

Mentor and support junior and senior engineers

Conduct code reviews and uphold engineering best practices

Backend Engineering

Build and maintain scalable backend services and RESTful APIs

Design and optimise MongoDB database solutions

Improve and maintain existing backend infrastructure

Troubleshoot production issues and implement robust solutions

Collaboration & Delivery

Work closely with cross-functional teams to deliver meaningful customer outcomes

Participate in technical interviews and help grow the engineering team

Drive improvements in processes, tooling, and development practices

Core Technical Skills

You’ll thrive if you have experience with:

MongoDB (data modelling, indexing, aggregation, performance tuning)

Node.js and the wider JavaScript/TypeScript ecosystem

Express.js and/or Fastify

RESTful API design

AWS or similar cloud platforms

Microservices architecture

Testing frameworks (Vitest, Jest, Mocha, etc.)

CI/CD pipelines & DevOps practices

GitHub workflows

Observability tools (e.g., DataDog)

Docker / Kubernetes

Tech Stack You’ll Be Working With

Node.js, JavaScript/TypeScript

Express.js, Fastify

MongoDB

AWS

Vue.js, Nuxt.js

Nice to Have – AI Experience

Not essential, but a big bonus:

Integrating AI/ML models

Working with LLM APIs (OpenAI, Anthropic, etc.)

Prompt engineering

AI workflow tools (LangChain, Flowise)

Building internal AI automation tools

Benefits

This company genuinely invests in its people. You’ll enjoy:

Remote-first working with offices in London, Manchester

Flexible hours 

25 days annual leave + 8 bank holidays + 2 Christmas shutdown days

Option to purchase an extra week off

Interested? Please Click Apply Now