At a Glance
- Tasks: Own the product growth loop, optimise user activation, and drive retention through data-driven experiments.
- Company: Join readywhen.ai, a pioneering AI startup transforming small business operations.
- Benefits: Competitive salary, equity options, and the chance to shape an innovative product.
- Other info: High-autonomy role with excellent opportunities for personal and professional growth.
- Why this job: Be the first growth hire and directly influence product success from day one.
- Qualifications: Senior experience in B2B startups, expert in TypeScript, React, and SQL.
The predicted salary is between 65000 - 80000 £ per year.
readywhen.ai is a London-based pre-seed AI startup building the first "senior AI employee" for small-business owners. The platform connects to existing business tools to automatically draft client updates, proposals, and reports based on real-time context, eliminating the need for manual prompting or complex setup for busy founders.
Join readywhen.ai as our first dedicated growth hire to own the product loop from code to conclusion. You will bridge the gap between engineering and GTM, building fast-paced experiments, instrumenting the activation funnel, and driving retention. This is a high-autonomy, full-stack role for a senior engineer who thinks like a founder.
Location: London, UK
Why this role is remarkable:
- Join a high-velocity, pre-seed team as the first growth hire, directly influencing the product's trajectory and core business metrics from day one.
- Work at the cutting edge of AI-assisted development, utilising tools like Claude Code and Cursor to accelerate shipping while building a truly autonomous AI product.
- Enjoy complete ownership over the growth stack, from building experiment scaffolding to performing statistical analysis, without the friction of traditional PM specifications.
What You Will Do:
- Optimize the end-to-end activation funnel by identifying user drop-off points and shipping rapid, data-driven fixes to improve onboarding momentum.
- Design and build a robust experimentation framework using tools like GrowthBook or PostHog to run scientifically-driven A/B tests behind feature flags.
- Own the company's data integrity by designing Amplitude event taxonomies and building automated lifecycle messaging flows to drive long-term user retention.
The ideal candidate:
- Brings senior-level experience shipping growth features at B2B or prosumer startups, with a proven track record of moving activation and retention metrics.
- Expert in TypeScript, React, and SQL, with the ability to query your own data and write clean, reviewable production code.
- Exhibits a founder mindset, capable of identifying high-impact bets independently while maintaining enough architectural respect to know when a fix belongs in an experiment.
Senior Product Growth Engineer (£65k-£80k + Equity) at readywhen in London employer: Jack & Jill
At Jack & Jill, we pride ourselves on being an exceptional employer that fosters a dynamic and innovative work culture. Our team enjoys a range of benefits including flexible working arrangements, professional development opportunities, and a collaborative environment that encourages creativity and growth. Located in a vibrant area, we offer unique advantages such as access to cutting-edge technology and the chance to work with industry leaders in AI-driven marketing strategies.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Product Growth Engineer (£65k-£80k + Equity) at readywhen in London
✨Join Product Management Meetups
Get involved in local product management meetups or workshops. These events are perfect for meeting industry folks, sharing ideas, and staying updated on trends. Plus, you never know who might be hiring—it's a fantastic way to make connections that could lead to a job at places like Jack & Jill!
✨Show Off Your Product Sense
Create case studies or mini-projects showcasing your product management skills, and share them on platforms like Medium or LinkedIn. This not only puts your skills on display but also boosts your visibility in the product community. Imagine how impressed the hiring team at Jack & Jill would be by your initiative!
✨Utilise Online Communities
Dive into online product management communities like Product Coalition or Mind the Product. Engage in discussions, ask questions, and share your insights. These platforms are goldmines for networking and finding hidden job opportunities—many companies often scout talent from within these circles.
✨Leverage Your University Network
If you’ve recently graduated or are still in uni, tap into your alumni network for connections in product management. Many universities have their own job boards and affinity resources to help graduates land roles. Don't forget to keep an eye out for job openings at Jack & Jill through your school's career services!
We think you need these skills to ace Senior Product Growth Engineer (£65k-£80k + Equity) at readywhen in London
Some tips for your application 🫡
Show Off Your Product Passion:When applying for a product management role like Senior Product Growth Engineer (£65k-£80k + Equity) at readywhen, let your passion for developing products shine through in your cover letter. Share specific examples of products you've managed, how you solved user needs, and any successful outcomes you've achieved. This is your chance to showcase your understanding of the product lifecycle!
Highlight Your Cross-Functional Skills:Product management isn't just about understanding the product; it’s about collaborating with different teams! Make sure to emphasise your experience working with developers, designers, and marketers. Use your CV to showcase your ability to bridge gaps between these areas, and include relevant experiences that demonstrate your communication and leadership skills!
Include Your Metrics and Achievements:In a full-time product management application, data speaks volumes! Quantify your achievements wherever possible. Did you increase user retention by a certain percentage? Launch a product ahead of schedule? Include these metrics in your CV to paint a picture of your impact and effectiveness in previous roles.
Tailor Your CV to the Role:Make sure your CV is tailored for the Senior Product Growth Engineer (£65k-£80k + Equity) at readywhen position at Jack & Jill. Use keywords from the job description and ensure your relevant experiences are front and centre. Highlight any certifications or relevant training you’ve completed that will make you stand out as a strong candidate for the role. And remember, we’re excited to see your application on our website!
How to prepare for a job interview at Jack & Jill
✨Understand the Product Life Cycle
As a product management candidate, we need to get our head around the complete product life cycle. Be prepared to discuss real-world examples of how you’ve managed product development from ideation to launch. Bring specific insights on tools like JIRA or Trello that can help streamline these processes.
✨Showcase Your Cross-Functional Skills
Product management is all about collaboration. We should be ready to highlight how we’ve worked across teams—think marketing, engineering, and design. Prepare to discuss scenarios where you had to mediate differing opinions and how you got everyone on board with a shared vision.
✨Prepare for Case Studies
In a full-time role, we can expect to encounter case study questions during our interviews. Practise solving hypothetical product problems on the spot, such as prioritising features for a new app or improving user engagement metrics. This will show our analytical thinking and decision-making skills.
✨Know Your Metrics
Let’s face it, numbers are our best friends in product management. We should prepare to discuss key performance indicators (KPIs) and how we've used analytics to inform product decisions. Dive into examples where data has driven our strategy for improvements or justified product changes.
