---
title: 'Backend / Fullstack Engineer at Hook'
canonical: 'https://feeny.ai/job/backend-fullstack-engineer-hook-london-h61fh3dcz6hr'
type: 'job'
last_seen: '2026-09-11'
---

# Backend / Fullstack Engineer at Hook

- **Company:** Hook
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Posted:** 2026-04-16
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/hook/7da5dd47-a545-4c86-bca5-143b7514cdeb

## Job description

## About Hook

We’re building the future of customer growth. At Hook, we use AI and Machine Learning to help businesses predict revenue with accuracy, drive customer loyalty, and capture massive value from their existing customers. We’re a Series A company who ranked 33 out of 100 on the [Sifted](https://sifted.eu/leaderboards/sifted-100-uk-ireland-2025) fastest growing startups and we have raised $multi-million in funding from some of the top investors in Europe and the US (e.g. Balderton Capital and Lightspeed) and have an enviable list of customers that we’re working with including some of the fastest growing companies in the world. We’re looking for ambitious people that want to be part of our meaningful vision of changing how businesses engage with their customers, and of building one of the world’s leading workplaces for great people along the way. Responsibilities: You will wear many hats in your engineering duties. Your day-to-day will include:

- Working in a team with technical and non-technical colleagues to design and build product features that add value to our customers
- Working across the stack (back-end focus) and writing clean, well-tested code
- Own significant parts of our product architecture and propose and lead new improvements
- Reviewing other software engineers code and provide structured feedback
- Designing our engineering processes and patterns to be the best for our team
- Monitoring system performance and ensure everything is up and running
- Designing our data schemas to suit the needs across the business

There’s a lot going on - you’ll be building a brand new category of SaaS product! The more you want to be involved, the more you will find there is to do and the more impact you will have on our joint success. Requirements: We're looking for an ambitious self-starter who wants to be part of an early-stage company full of amazing talent and with a global vision.

- Experience working on both frontend and backend development. We use React on the frontend side and Python on the back end
- Experience working in taking products through different development environments into Production
- Excellent communication skills, with the ability to effectively collaborate and convey ideas to diverse stakeholders
- The ability to pick up and use third party APIs and tools
- Experience working with Python on the backend with frameworks, such as Django, Flask or FastAPI
- Desirable: A good understanding of cloud technologies

Salary - £70,000-£85,000 (depending on experience)

## Benefits

🏖️ 27 days holiday (option to buy and sell holiday) + bank holidays 📈 Generous stock options 🏥 Private health insurance so you can get the best care you need 🧘 Flexible monthly wellness allowance that you can use monthly on things like gyms, yoga, mental health & healthy food 📚 Annual learning & development budget for every employee 🏢 Flexible working - we’ll all come together three days a week but otherwise you can work from home or come into our awesome office in Liverpool Street 💻 The best equipment for everyone to work with Our founder and team are incredibly passionate about creating a company culture that is diverse, inclusive, productive and enjoyable for all our colleagues. As part of a growing start-up team, we expect a lot from you and will work hard to make sure you have everything you need to be at your best.

## About Hook

## Core Business
- **Primary industry**: AI-powered Customer Success software
- **Target customers**: B2B, mid-market to enterprise SaaS companies with dedicated Customer Success teams
- **Mission**: “Build a new world for Customer Success, powered by AI” – maximise revenue without adding headcount [hook.co](https://hook.co/)

## Products & Services
- **Echo**: AI agent that monitors customer health, predicts churn up to 6 months in advance with 90%+ accuracy, and recommends next actions [hook.co](https://hook.co/).
- **Activator**: AI agent that creates personalised onboarding paths for each customer, adapting in real-time to drive activation [hook.co](https://hook.co/).
- **Hook Platform**: Connects product usage, revenue data, and customer interactions to provide a unified view; automates digital work and surfaces executive-ready insights with a chat interface [hook.co](https://hook.co/).

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total Funding $14.3M (Series A $8.7M in December 2023, Seed $2.8M in April 2021) [linkedin.com](https://uk.linkedin.com/company/hook-technology)
- **Notable Investors/Partners**: Backed by top early-stage European investors (specific names not listed in public sources); customers include GWI and hackajob [hook.co](https://hook.co/).
- **Growth Signals**: 24.6% YoY headcount growth (52 employees), 8 open positions, annual revenue range $1M–$5M, SOC 2 and ISO 27001 certified [linkedin.com](https://uk.linkedin.com/company/hook-technology) [hook.co](https://hook.co/).

## Competitive Advantages
- Predictive accuracy: 93% churn prediction accuracy and 85% accuracy predicting renewals 180 days out [hook.co](https://hook.co/).
- AI agents that not only surface insights but execute actions (e.g., automate email nudges, CRM triggers) – “100% of the digital work” can be automated [hook.co](https://hook.co/).
- Integrates with existing systems with minimal lift; no in-house data science required.
- Security certifications (SOC 2, ISO 27001) build trust with enterprise buyers [hook.co](https://hook.co/).

## Strategic Focus
- Scaling Customer Success teams through AI automation, reducing manual work by 50% and freeing up 25–35% more efficiency [hook.co](https://hook.co/).
- Expanding agent capabilities to cover the full customer lifecycle (onboarding, risk, renewal, expansion).
- Growing customer base among mid-market and enterprise SaaS companies, with a strong emphasis on data-driven outcomes.

## Why Work Here
- **Culture**: “Ambitious people who want to be part of a like-minded team” – the company is “incredibly passionate about building a diverse and inclusive workplace” [hook.co](https://hook.co/about-us/).
- **Work model**: In-office at the London headquarters (Great Winchester Street) with flexible working space; Built In lists “OnSite Workspace” for all roles [builtin.com](https://builtin.com/company/hook-hookco).
- **Perks**: Equity for all employees, private medical insurance, flexible wellness budget, annual learning & development allowance, twice-weekly team lunches, and regular socials [hook.co](https://hook.co/careers).
- **Employer rating**: 4.7/5.0 on LinkedIn (46 reviews), with culture rated 4.9, compensation 4.6, and career growth 4.7 [linkedin.com](https://uk.linkedin.com/company/hook-technology).
- **Open roles**: Backend/Fullstack Engineer, Front End Engineer, Enterprise Account Executive, Sales Development Representative, Account Manager, and more [hook.co](https://hook.co/careers) [jobs.ashbyhq.com](https://jobs.ashbyhq.com/hook).

## Sources
1. [hook.co](https://hook.co/)
2. [hook.co/careers](https://hook.co/careers)
3. [hook.co/about-us](https://hook.co/about-us/)
4. [builtin.com/company/hook-hookco](https://builtin.com/company/hook-hookco)
5. [linkedin.com/company/hook-technology](https://uk.linkedin.com/company/hook-technology)

## Other roles at Hook

- [Business Operations Associate](https://feeny.ai/job/business-operations-associate-hook-london-y6kwgbb0pp3j) — London, United Kingdom
- [Technical Implementation Consultant](https://feeny.ai/job/technical-implementation-consultant-hook-london-t8ttb52jhv6b) — London, United Kingdom
- [Senior Fullstack Engineer](https://feeny.ai/job/senior-fullstack-engineer-hook-london-kq5vrf860840) — London, United Kingdom