Skip to content
CV Rocket
Get started
How it worksThe enginePricingBlogContactSign in

Open nowPosted 149 days ago

Founding Full-Stack Engineer

Zalos1 open role

Where
London, UK
Work mode
On site
Get the CV for this job

From $25 per CV, paid once. No subscription.

Your applicationOpen nowFounding Full-Stack EngineerZalos · London, UK

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Zalos's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

11.9% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.9%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: posted 149 days ago

The posting

About the role

As Zalos's Founding Full-Stack Engineer, your job is to build the product experience that makes this real. You'll be designing and shipping the application surfaces, backend services, and workflow infrastructure that turn messy enterprise work into correct, auditable action across systems of record. This is a hard, important part of the product. It's entirely yours to own.

What we're building

Enterprise software was built to store data and enforce process. It was never built to be used by humans who have better things to do. The result: highly trained people wasting hours every day fighting screens instead of doing the actual work.

Zalos attacks this from three angles: - Intent-to-action: A user describes an outcome. Zalos figures out which systems to touch, in which order, with which data, and executes it with the right approvals and a clean audit trail. - Cross-system workflows: Event-driven chains that span SAP, Salesforce, and ServiceNow simultaneously. - Computer-use for the long tail: Not every enterprise workflow has a reliable API. We use computer-use agents to automate the 30 to 40 percent of processes that live in screens, VDI sessions, and legacy thick clients.

What you'll work on

  • Design and own the core agent architecture: how we take a natural language intent, decompose it into steps, call the right APIs and UI agents, handle failures gracefully, and close the loop with the user
  • Build reliable, production-grade LLM pipelines covering context management, tool use, structured outputs, and multi-step reasoning across systems with real enterprise data
  • Work directly with the founders and customers to understand where AI fails in real enterprise workflows and translate that into better systems
  • Set the technical standards for how we build AI at Zalos

Must haves

  • You've shipped AI-powered features that real users depend on in production. You know what breaks and how to prevent it
  • Deep hands-on experience with LLM APIs, agentic patterns, and tool/function calling
  • You think about reliability, latency, and cost as first-class engineering concerns, not afterthoughts
  • You build tests/evals before you ship, not after something breaks in front of a customer
  • High ownership: you take something from an ambiguous problem statement to a clean, working solution with minimal hand-holding
  • You're pragmatic. Startups are always on fire somewhere. You know when to let something burn and when to drop everything

Nice to haves

  • Computer-use or browser automation work with tools like Playwright, browser agents, or UI parsing
  • Fine-tuning or RLHF on domain-specific tasks
  • Prior founding engineer or early-stage startup experience

The team you'll work with

You'll work directly with the founders from day one. No engineering manager in the way, no sprint planning theatre.

Why Zalos

  • The market is real and enormous. The system integration market alone is $380B.
  • You'll work on genuinely hard AI problems. Reliable agents over messy enterprise systems, computer-use for legacy UIs, cross-system orchestration with audit trails.
  • Paying customers from day one. We're not pre-product. You'll see your work matter in real enterprise workflows within weeks of joining.
  • Small team, high trust. You'll have a direct line to founders and customers. Your opinions shape the product.

About the interview

We move fast and respect your time. No leetcode. No whiteboard puzzles. 1. 15-min intro call with a founder. We'll walk you through what we're building and what we need. You'll tell us what you've shipped. 2. Take-home technical task. No trick questions. We want to see how you think, not how you memorize. 3. 1-hour technical deep-dive with our CTO. Walk through your design, discuss tradeoffs, get into the weeds on production reliability. 4. 3-day paid work trial. Build something real with us. This is the most predictive step we have. 5. Offer. If we're aligned, you'll have an offer within a week of the trial.

From $25, paid onceGet the CV for this job

What happens when you press

One press. We do the rest.

  1. A CV for this posting

    Written against Zalos's own wording, from every piece of relevant proof in your profile.

  2. 25 readers review it

    Recruiter, hiring manager, skeptic and more read every draft, round after round. You get the best round.

    The review screen in CV Rocket: how each CV was read, round by round.

  3. We apply on Zalos's form

    Our application engine gets through the hardest forms there are. Where a question needs you, AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

    An application in CV Rocket: every answer filled in on the employer's form.

  4. Every reply, sorted

    Zalos's answer lands in your private mailbox, and we classify it on arrival: interview, question, rejection.

    The CV Rocket inbox: each employer reply classified as an interview, an action or a rejection.

  5. Reply with AI

    AI helps you write the email, checks it and sends it. We show you whether the recruiter read it.

  6. The interview in your calendar

    Full integration with your calendar. The invitation goes straight in.

    An interview invitation in the CV Rocket inbox, added to the candidate's calendar.
Get the CV for this job

From $25 per CV, paid once. No subscription.

Why it works

3×

more interviews than doing it yourself with ChatGPT.

ChatGPT writes a CV and never learns what happened to it. We see every reply. For each CV we know:

  • How it was written, and how the review scored it
  • When we applied, and how long after the posting went up
  • Which posting, which company, which city
  • Who got the interview, and who heard nothing

That is how we know which CVs get called.

Get the CV for this job

From $25 per CV, paid once. No subscription.

The numbers game

More applications. More interviews.

Every application goes out with its own CV, written for that posting and paid once. Send enough of them and the law of large numbers finds you the job.

Get the CV for this job
By hand5–10
With CV Rocket100
applications a day

Nearby

Live postings like this one

Same employer first, then the same role elsewhere.

Before you press

Straight answers

Get the CV for this job

From $25 per CV, paid once. No subscription.

What if my background isn't good enough?

We make the most of the background you have. The CV uses every piece of relevant proof your profile holds, and one of the 25 readers reads your whole profile and flags what the CV left out.

Do you really apply for me?

Yes, on the employer's own form, the hardest ones included. Where a question needs you, you answer it right there and AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

Is it a subscription?

No. You pay once per CV, from $25. Every application goes out with its own CV, written for that posting.

One job. One CV.
Paid once.

Pick the posting you want. We write for it, apply for you and catch the reply.

Get the CV for this job

From $25 per CV, paid once. No subscription.