Full Stack Engineer

Senior Product Engineer | London | Hybrid | Startup

£90,000 - £130,000 + meaningful equity

Tech stack:

Experience required across any of the following:

Golang

Rust

TypeScript, Node.js

React.js, Next.js

AWS or GCP

Most B2B SaaS products are effectively dashboards on top of a database. This isn't that.

We're working with an Agentic AI startup building infrastructure and intelligent software systems that sit underneath large scale operational workflows and real time decision making processes.

The platform processes very high volumes of live data, powers complex orchestration pipelines, and delivers AI driven functionality directly into customer environments at enterprise scale.

The engineering challenges are genuinely difficult. Not "we use Kubernetes so we're scaling" difficult. More the kind of problems involving distributed systems, real time data ingestion, AI orchestration pipelines, and building software that customers rely on day to day inside production environments.

The team is still small enough that every engineer materially changes the trajectory of the business. No giant hierarchy, no endless roadmap theatre, no Jira archaeology expedition trying to work out why a ticket exists.

That means speaking to customers, understanding commercial context, shaping product direction, building systems, shipping to production, monitoring outcomes, and iterating quickly.

You'll be working across:

Real time event streaming systems handling very high traffic volumes

AI powered workflows and orchestration pipelines

Product engineering across backend infrastructure and frontend applications

CRM and third party integration infrastructure

Identity resolution and large scale data processing

Systems where reliability and speed both matter because customers actively use what gets shipped

The environment is best suited to engineers who:

Enjoy ambiguity rather than waiting for perfect specs

Think commercially as well as technically

Want ownership rather than ticket queues

Care about shipping quickly

Like being close to founders, customers, and product decisions

Have worked in strong start ups or fast moving product environments before

Technical background matters, but mindset matters more. They're open to strong engineers from different backend ecosystems if you've built complex systems and can learn quickly.

A few things worth knowing:

High frequency of deployments per week

Engineers use AI tooling heavily to improve speed and workflow efficiency

Minimal meeting culture

High trust environment with lots of autonomy

Strong engineering standards without unnecessary process theatre

Small team, meaningful ownership, direct impact

If you're the type of engineer who likes solving hard problems with smart people, has energy & ambition, and actually seeing your work used in production by real customers, this is a very good opportunity.

Send me an email at or send your CV via this ad to learn more