Senior Backend Engineer

The Growth Foundation; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Jobs in JS in London is seeking a Senior Backend Engineer to design and scale backend systems for a fast-growing DTC & e-commerce tech platform.

You will own APIs, data processing, and infra, working with Python, TypeScript, AWS and Postgres/Redis, in a hands-on environment with end-to-end ownership.

Qualifications

• 4+ years building production-grade backend systems.
• Strong Python and TypeScript.
• Experience with AWS (ECS, SQS), Docker and GitHub Actions.
• Postgres and Redis.
• Experience with high-throughput systems or background job queues.
• A passion for clean, maintainable code and great developer experience.

Responsibilities

• Designing and building robust, scalable backend systems.
• Architecting infrastructure for job processing, analytics and event tracking.
• Building internal tooling for rate limiting, quotas and authentication.
• Developing and maintaining APIs and backend services.
• Working closely with product, design and customer experience to ship great features.
• Owning your work end to end: code, infrastructure, tests and monitoring.

Skills

Python

TypeScript

Backend design

Tools

Docker

GitHub Actions

AWS ECS

SQS

PostgreSQL

Redis

Job description

Senior Backend Engineer | London | Scale-up, DTC & E-commerce Tech

I'm hiring for a fast-growing tech company that’s changing how leading DTC and e-commerce brands reach the customers they struggle to get through to: the ones who ignore emails, scroll past retargeting ads and don't respond to SMS.

Their platform plugs straight into tools like Shopify and Klaviyo, and it's already delivering measurable incremental revenue for some of the best brands in the world. Now they need a Senior Full Stack (Backend) Engineer to help shape the architecture behind it.

What you'll be doing:

• Designing and building robust, scalable backend systems
• Architecting infrastructure for job processing, analytics and event tracking
• Building internal tooling for rate limiting, quotas and authentication
• Developing and maintaining APIs and backend services
• Working closely with product, design and customer experience to ship great features
• Owning your work end to end: code, infrastructure, tests and monitoring

What you'll bring:

• 4+ years building production-grade backend systems
• Strong Python and TypeScript
• Experience with AWS (ECS, SQS), Docker and GitHub Actions
• Postgres and Redis
• Experience with high-throughput systems or background job queues
• A passion for clean, maintainable code and great developer experience

Nice to have:

rate limiting or auth systems, analytics and attribution engineering (dbt, Snowflake), WYSIWYG editors, PDF generation and render jobs, SSR frameworks (Next.js, Remix)

On‑site, 5 days a week, London