Lead Product Engineer

Job Description

Are you a senior and talented product engineer who is versatile enough to take on a role working with AI at a rapidly growing venture-backed startup? 

We are looking for someone extremely motivated, who is driven by tech for good, and who wants to do the best work of their career. All the better if working on a rarely discussed problem, that has a hugely detrimental impact on billions of people’s lives across the globe, in a category-defining way, feels like a good reason to get out of bed in the morning. 

If the idea of being an impactful IC who also gets to help shape and define an engineering culture, gets you going, this role might be for you. The perfect person will have experience working in early-stage startups (pre-Series B), and will be adaptable, flexible, and low ego.

Before we talk about our product and mission, let’s be clear that although we’re tackling men’s sexual problems right now, you don’t need to be a guy to apply. 

At Mojo, we’re all about less screens, more sex. 

Over a third of young adults haven’t had sex in the past year. Not because they don’t want to, but because modern life is drowning them in screens and unrealistic expectations. We live in a modern hyper-connected world that is lonelier than ever. Real human connection has taken a backseat.

And in all of this, men are falling behind. They are struggling with sex in ways most people don’t see. Anxiety, shame, and bad advice are creating a sexless generation. Enough is enough. We’re here to help men break free from these outdated stories and get real about what it means to be sexually confident. Because when a guy is comfortable in his own skin, it doesn’t just help his sex life—it boosts his mental health, relationships, and overall sense of purpose.

Through a combination of 50 years of sexology research and cutting edge AI Mojo has created personalised Dating, Sex, and Relationship coaches — built for men who want to overcome performance anxiety in the bedroom. 

We’ve had crazy global growth, with nearly a million members in 150 countries and counting. We’re backed by two of Europe’s top VC firms, and you might even have seen us on the front cover of the Sunday Times.

Check us out here: https://mojo.so

The Role

You’ll work closely with the founders, report to our Technical Engineering Manager Clem, and be one of the go to React Native engineers on the team. There are six engineers on the team currently. Four specializing in frontend and RN and two backend specializing in Go. For more details on the tech stack see this link to our candidate pack. We want you to have a big impact in shaping the technical direction of the product and help inform company-level strategy and decision-making. 

We are an app-first experience, and the tech you build is our entire product. It is how we have the incredible impact we do. It is what enables the whole company to function.

As we are an early-stage start-up, there is room for you to have a huge impact on the future of the company and a large amount of autonomy to shape your role and get stuck in. You should be comfortable adapting your role and responsibilities as the company grows. We expect this might consist of:

• Being an impactful individual contributor writing code and driving technical performance
• Leading engineering projects that drive company strategy and results
• Planning and breaking down work to understand and communicate complexity which allows company-wide prioritization
• Handling the “plumbing” - acting as a backstop to solve obscure and hard-to-debug things that might be blocking the rest of the team
• Keeping the development cycle smooth & speedy - filling in the gaps, taking on the sometimes-unenviable tasks like keeping CI functioning, managing big dependencies, doing things that will best enable the other engineers
• Write up high-standard engineering documentation to set up long-term practices
• Collaborating with both the design and backend teams to create visually appealing interfaces that work to a high standard with fast-moving timescales
• Making our React Native apps “feel right” across iOS, Android, and web - with both parity and appropriate variation between each
• Shape and contribute to the best engineering culture 
• Build strong and trusting relationships across the product team and org structure

We are building a team of people that have real ownership over the business. To be successful here, you should be willing to roll your sleeves up and get your hands dirty on anything that will help the business be more successful.

Requirements

You are:

• Experienced working in early-stage teams (pre-Series B)
• Recent & extensive experience working with React Native 
• Experience developing web apps, ideally with React Native for Web
• Demonstrated expertise in driving the development of a broad codebase - e.g. maintaining a design system, test suites, backend interfaces, and other varying packages
• Solid proficiency with TypeScript, or other strongly typed language
• Solid understanding of system design
• Experience with mentoring, teaching and disseminating best practices to the wider team
• Comfortable and happy to contribute on the backend
• Have worked in cross-functional product teams
• Keen to coach other members of the team
• Flexible in the way you work and are a quick learner
• Keen to contribute across the whole development process
• Compassionate, empathetic, understanding, or interested in mental health
• Always up-to-date with the latest tools and trends

Benefits

• £80-110k salary, depending on experience, with a chunky seed round equity package
• Private health, optical, audiological, and dental insurance with Vitality Health
• Open to remote, if London-based: hybrid working, 3 days in and 2 days out, with great offices in Old Street
• Three remote working fortnights a year (read more in our handbook)
• 36 days off (inc local bank holidays)
• Parental leave for primary and secondary caregivers
• Workplace nursery benefit and emergency child-sitting allowance 
• Monthly team outings 
• £500 personal wellbeing budget
• Unlimited professional development allowance
• A £100 budget for noise-cancelling headphone to help with deep work
• If you want to learn more about how we work check out our Employee Handbook

We want to build a diverse team with different backgrounds, outlooks and experiences. If you need any adjustments or support when you’re applying, no worries. Just let us know at work@mojo.so